Remove backup file

.gitignore

@@ -1 +1,3 @@
 .log
+data
+

LICENSE

@@ -1,6 +1,6 @@
-MIT License
+The MIT License (MIT)
 
-Copyright (c) 2022 Andrea Fazzi
+Copyright © 2024 Andrea Fazzi dev@andreafazzi.eu
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -9,13 +9,13 @@ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

assets/static/css/neat.css

@@ -0,0 +1,144 @@
+:root {
+    color-scheme: light dark;
+    --light: #fff;
+    --lesslight: #efefef;
+    --dark: #404040;
+    --moredark: #000;
+    border-top: 5px solid var(--dark);
+    line-height: 1.5em; /* This causes wrapping h1's to collapse too small */
+    font-family: sans-serif;
+    font-size: 16px;
+}
+
+* {
+    box-sizing: border-box;
+    color: var(--dark);
+}
+
+button, input {
+    font-size: 1em; /* Override browser default font shrinking*/
+}
+
+input {
+    border: 1px solid var(--dark);
+    background-color: var(--lesslight);
+    border-radius: .25em;
+    padding: .5em;
+}
+
+pre {
+    background-color: var(--lesslight);
+    margin: 0.5em 0 0.5em 0;
+    padding: 0.5em;
+    overflow: auto;
+}
+
+code {
+    background-color: var(--lesslight);
+}
+
+body {
+    background-color: var(--light);
+    margin: 0;
+    max-width: 800px;
+    padding: 0 20px 20px 20px;
+    margin-left: auto;
+    margin-right: auto;
+}
+
+img {
+    max-width: 100%;
+    height: auto;
+}
+
+button, .button, input[type=submit] {
+    display: inline-block;
+    background-color: var(--dark);
+    color: var(--light);
+    text-align: center;
+    padding: .5em;
+    border-radius: .25em;
+    text-decoration: none;
+    border: none;
+    cursor: pointer;
+}
+
+button:hover, .button:hover, input[type=submit]:hover {
+    color: var(--lesslight);
+    background-color: var(--moredark);
+}
+
+/* Add a margin between side-by-side buttons */
+button + button, .button + .button, input[type=submit] + input[type=submit] {
+    margin-left: 1em;
+}
+
+.center {
+    display: block;
+    margin-left: auto;
+    margin-right: auto;
+    text-align: center;
+}
+
+.bordered {
+    border: 3px solid;
+}
+
+.home {
+    display: inline-block;
+    background-color: var(--dark);
+    color: var(--light);
+    margin-top: 20px;
+    padding: 5px 10px 5px 10px;
+    text-decoration: none;
+    font-weight: bold;
+}
+
+
+/* Desktop sizes */
+@media only screen and (min-width: 600px) {
+    ol.twocol {
+        column-count: 2;
+    }
+    
+    .row {
+        display: flex;
+        flex-direction: row;
+        padding: 0;
+        width: 100%;
+    }
+
+    /* Make everything in a row a column */
+    .row > * {
+        display: block;
+        flex: 1 1 auto;
+        max-width: 100%;
+        width: 100%;
+    }
+
+    .row > *:not(:last-child) {
+        margin-right: 10px;
+    }
+}
+
+/* Dark mode overrides (confusingly inverse) */
+@media (prefers-color-scheme: dark) {
+    :root {
+        --light: #222;
+        --lesslight: #333;
+        --dark: #eee;
+        --moredark: #fefefe;
+    }
+    /* This fixes an odd blue then white shadow on FF in dark mode */
+    *:focus {
+        outline: var(--light);
+        box-shadow: 0 0 0 .25em royalblue;
+    }
+}
+
+/* Printing */
+@media print {
+    .home {
+        display: none;
+    }
+}

assets/templates/exam.tpl

@@ -0,0 +1,28 @@
+<!DOCTYPE html>                                                        
+<html>                                                                 
+  <head>
+    <meta charset="UTF-8">
+    <!-- <link rel="stylesheet" href="https://unpkg.com/mvp.css"> -->
+    <link rel="stylesheet" type="text/css" href="/static/css/neat.css">
+    <title>Exam</title>                                          
+  </head>                                                                
+  <body>                                                                 
+    <h1>Exam</h1>                                                
+    <h2>{{.Participant.Firstname}} {{.Participant.Lastname}}</h2>                                                                      
+    <form action="/{{.SessionID}}/{{.Participant.Token}}" method="post">                                                             
+      {{range $index, $quiz := .Quizzes}}                            
+      <h3>Question {{$index}}:</h3>                            
+      <p>{{$quiz.Question.Text}}</p>                                  
+      {{range $answer := $quiz.Answers}}           
+      <input type="radio"                                    
+	     id="{{$quiz.Question.ID}}_{{$answer.ID}}" name="{{$quiz.Question.ID}}"        
+	     value="{{$answer.ID}}">                                                      
+      <label                                                 
+	for="{{$answer.ID}}">{{$answer.Text}}</label><br>    
+      {{end}}                                                    
+      <br>                                                       
+      {{end}}                                                        
+      <button type="submit">Invia</button>
+    </form>                                                            
+  </body>                                                                
+</html>                                                                

backup/main.go

@@ -0,0 +1,290 @@
+package main
+
+import (
+	"encoding/json"
+	"io"
+	"log/slog"
+	"math/rand"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"text/template"
+	"time"
+
+	"git.andreafazzi.eu/andrea/probo/pkg/models"
+	"git.andreafazzi.eu/andrea/probo/pkg/store"
+	"git.andreafazzi.eu/andrea/probo/pkg/store/file"
+	"github.com/lmittmann/tint"
+)
+
+var (
+	DefaultAssetDir    = "assets"
+	DefaultDataDir     = "data"
+	DefaultSessionDir  = "sessions"
+	DefaultResponseDir = "responses"
+	DefaultTemplateDir = "templates"
+	DefaultStaticDir   = "static"
+)
+
+type Config struct {
+	SessionDir  string
+	ResponseDir string
+	TemplateDir string
+	StaticDir   string
+}
+
+type ExamTemplateData struct {
+	*models.Exam
+
+	SessionID string
+}
+
+type Server struct {
+	config *Config
+	mux    *http.ServeMux
+
+	sessionFileStore  *file.SessionFileStore
+	responseFileStore *file.ResponseFileStore
+}
+
+func GetDefaultTemplateDir() string {
+	return filepath.Join(DefaultAssetDir, DefaultTemplateDir)
+}
+
+func GetDefaultStaticDir() string {
+	return filepath.Join(DefaultAssetDir, DefaultStaticDir)
+}
+
+func GetDefaultSessionDir() string {
+	return filepath.Join(DefaultDataDir, DefaultSessionDir)
+}
+
+func GetDefaultResponseDir() string {
+	return filepath.Join(DefaultDataDir, DefaultResponseDir)
+}
+
+func NewServer(config *Config) (*Server, error) {
+	_, err := os.Stat(config.SessionDir)
+	if err != nil {
+		return nil, err
+	}
+
+	_, err = os.Stat(config.TemplateDir)
+	if err != nil {
+		return nil, err
+	}
+
+	_, err = os.Stat(config.StaticDir)
+	if err != nil {
+		return nil, err
+	}
+
+	sStore, err := file.NewSessionFileStore(
+		&file.FileStoreConfig[*models.Session, *store.SessionStore]{
+			FilePathConfig: file.FilePathConfig{Dir: config.SessionDir, FilePrefix: "session", FileSuffix: ".json"},
+			IndexDirFunc:   file.DefaultIndexDirFunc[*models.Session, *store.SessionStore],
+			CreateEntityFunc: func() *models.Session {
+				return &models.Session{}
+			},
+		},
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	rStore, err := file.NewResponseFileStore(
+		&file.FileStoreConfig[*models.Response, *store.ResponseStore]{
+			FilePathConfig: file.FilePathConfig{Dir: config.ResponseDir, FilePrefix: "response", FileSuffix: ".json"},
+			IndexDirFunc:   file.DefaultIndexDirFunc[*models.Response, *store.ResponseStore],
+			CreateEntityFunc: func() *models.Response {
+				return &models.Response{}
+			},
+		},
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	rStore.FilePathConfig = file.FilePathConfig{
+		Dir:        config.ResponseDir,
+		FilePrefix: "response",
+		FileSuffix: ".json",
+	}
+
+	s := &Server{
+		config,
+		http.NewServeMux(),
+		sStore,
+		rStore,
+	}
+
+	s.mux.Handle("/static/", http.StripPrefix("/static", http.FileServer(http.Dir(config.StaticDir))))
+	s.mux.HandleFunc("/create", s.createExamSessionHandler)
+	s.mux.HandleFunc("/responses/", s.getResponsesHandler)
+	s.mux.HandleFunc("/", s.getExamHandler)
+
+	return s, nil
+}
+
+func NewDefaultServer() (*Server, error) {
+	return NewServer(&Config{
+		SessionDir:  GetDefaultSessionDir(),
+		ResponseDir: GetDefaultResponseDir(),
+		TemplateDir: GetDefaultTemplateDir(),
+		StaticDir:   GetDefaultStaticDir(),
+	})
+}
+
+func (s *Server) getResponsesHandler(w http.ResponseWriter, r *http.Request) {
+	result := make([]*models.Response, 0)
+
+	urlParts := strings.Split(r.URL.Path, "/")
+
+	sessionID := urlParts[2]
+
+	if r.Method == "GET" {
+		session, err := s.sessionFileStore.Read(sessionID)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		for _, exam := range session.Exams {
+			responses := s.responseFileStore.ReadAll()
+			for _, r := range responses {
+				if r.ID == exam.ID {
+					result = append(result, r)
+				}
+			}
+		}
+		err = json.NewEncoder(w).Encode(result)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+	}
+}
+
+func (s *Server) createExamSessionHandler(w http.ResponseWriter, r *http.Request) {
+	session := new(models.Session)
+
+	data, err := io.ReadAll(r.Body)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	err = session.Unmarshal(data)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	memorySession, err := s.sessionFileStore.Create(session)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	err = json.NewEncoder(w).Encode(memorySession)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	slog.Info("Received a new session", "session", memorySession)
+
+}
+
+func (s *Server) getExamHandler(w http.ResponseWriter, r *http.Request) {
+	urlParts := strings.Split(r.URL.Path, "/")
+
+	sessionID := urlParts[1]
+	token := urlParts[2]
+
+	session, err := s.sessionFileStore.Read(sessionID)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	exam := session.Exams[token]
+
+	if r.Method == "GET" {
+		w.Header().Set("Content-Type", "text/html")
+
+		tplData, err := os.ReadFile(filepath.Join(GetDefaultTemplateDir(), "exam.tpl"))
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+
+		}
+		tmpl := template.Must(template.New("exam").Parse(string(tplData)))
+
+		err = tmpl.Execute(w, ExamTemplateData{exam, session.ID})
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+	}
+
+	if r.Method == "POST" {
+		err := r.ParseForm()
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusBadRequest)
+			return
+		}
+
+		response := new(models.Response)
+		response.UniqueIDFunc = func() string {
+			return exam.GetID()
+		}
+
+		response.Questions = make(map[string]string)
+		for qID, values := range r.Form {
+			for _, aID := range values {
+				response.Questions[qID] = aID
+			}
+		}
+
+		_, err = s.responseFileStore.Create(response)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusBadRequest)
+			return
+		}
+
+		w.Write([]byte("<p>Thank you for your response.</p>"))
+		return
+	}
+
+}
+
+func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	s.mux.ServeHTTP(w, r)
+}
+
+func generateRandomID() string {
+	id := ""
+	for i := 0; i < 6; i++ {
+		id += strconv.Itoa(rand.Intn(9) + 1)
+	}
+	return id
+}
+
+func main() {
+	slog.SetDefault(slog.New(
+		tint.NewHandler(os.Stdout, &tint.Options{
+			Level:      slog.LevelInfo,
+			TimeFormat: time.Kitchen,
+		}),
+	))
+
+	server, err := NewDefaultServer()
+	if err != nil {
+		panic(err)
+	}
+
+	slog.Info("Probo server started.")
+	http.ListenAndServe(":8080", server)
+}

backup/server_test.go

@@ -0,0 +1,289 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"log/slog"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	"git.andreafazzi.eu/andrea/probo/pkg/models"
+	"github.com/lmittmann/tint"
+	"github.com/remogatto/prettytest"
+)
+
+var examPayload = `
+{
+    "ID": "fe0a7ee0-f31a-413d-f123-ab5068bcaaaa",
+    "Name": "Test session",
+    "Exams": {
+	"111222": {
+	    "id": "fe0a7ee0-f31a-413d-ba81-ab5068bc4c73",
+	    "created_at": "0001-01-01T00:00:00Z",
+	    "updated_at": "0001-01-01T00:00:00Z",
+	    "Participant": {
+		"ID": "1234",
+		"Firstname": "John",
+		"Lastname": "Smith",
+		"Token": "111222",
+		"Attributes": {
+		    "class": "1 D LIN"
+		}
+	    },
+	    "Quizzes": [
+		{
+		    "id": "0610939b-a1a3-4d0e-bbc4-2aae0e8ee4b9",
+		    "created_at": "2023-11-27T17:51:53.910642221+01:00",
+		    "updated_at": "0001-01-01T00:00:00Z",
+		    "hash": "",
+		    "question": {
+			"id": "98c0eec9-677f-464e-9e3e-864a859f29a3",
+			"created_at": "0001-01-01T00:00:00Z",
+			"updated_at": "0001-01-01T00:00:00Z",
+			"text": "Question text with #tag1."
+		    },
+		    "answers": [
+			{
+			    "id": "1ab5ff1f-74c8-4efc-abdc-d03a3640f3bc",
+			    "text": "Answer 1"
+			},
+			{
+			    "id": "74547724-b905-476f-8cfc-6ee633f92ef3",
+			    "text": "Answer 2"
+			},
+			{
+			    "id": "96c1a8ee-c50c-4ebc-89e4-9f3ca356adbd",
+			    "text": "Answer 3"
+			},
+			{
+			    "id": "16c4b95e-64ce-4666-8cbe-b66fa59eb23b",
+			    "text": "Answer 4"
+			}
+		    ],
+		    "tags": [
+			{
+			    "CreatedAt": "0001-01-01T00:00:00Z",
+			    "UpdatedAt": "0001-01-01T00:00:00Z",
+			    "DeletedAt": null,
+			    "name": "#tag1"
+			}
+		    ],
+		    "correct": {
+			"id": "1ab5ff1f-74c8-4efc-abdc-d03a3640f3bc",
+			"text": "Answer 1"
+		    },
+		    "CorrectPos": 0,
+		    "type": 0
+		},
+		{
+		    "id": "915818c4-b0ce-4efc-8def-7fc8d5fa7454",
+		    "created_at": "2023-11-27T17:51:53.91077796+01:00",
+		    "updated_at": "0001-01-01T00:00:00Z",
+		    "hash": "",
+		    "question": {
+			"id": "70793f0d-2855-4140-814e-40167464424b",
+			"created_at": "0001-01-01T00:00:00Z",
+			"updated_at": "0001-01-01T00:00:00Z",
+			"text": "Another question text with #tag1."
+		    },
+		    "answers": [
+			{
+			    "id": "1ab5ff1f-74c8-4efc-abdc-d03a3640f3bc",
+			    "text": "Answer 1"
+			},
+			{
+			    "id": "74547724-b905-476f-8cfc-6ee633f92ef3",
+			    "text": "Answer 2"
+			},
+			{
+			    "id": "96c1a8ee-c50c-4ebc-89e4-9f3ca356adbd",
+			    "text": "Answer 3"
+			},
+			{
+			    "id": "16c4b95e-64ce-4666-8cbe-b66fa59eb23b",
+			    "text": "Answer 4"
+			}
+		    ],
+		    "tags": [
+			{
+			    "CreatedAt": "0001-01-01T00:00:00Z",
+			    "UpdatedAt": "0001-01-01T00:00:00Z",
+			    "DeletedAt": null,
+			    "name": "#tag1"
+			}
+		    ],
+		    "correct": {
+			"id": "1ab5ff1f-74c8-4efc-abdc-d03a3640f3bc",
+			"text": "Answer 1"
+		    },
+		    "CorrectPos": 0,
+		    "type": 0
+		}
+	    ]
+	}
+    },
+    "333444": {
+	"id": "12345678-abcd-efgh-ijkl-9876543210ef",
+	"created_at": "2023-12-01T12:00:00Z",
+	"updated_at": "2023-12-01T12:00:00Z",
+	"Participant": {
+	    "ID": "5678",
+	    "Firstname": "Jane",
+	    "Lastname": "Doe",
+	    "Token": "333444",
+	    "Attributes": {
+		"class": "2 A SCI"
+	    }
+	},
+	"Quizzes": [
+	    {
+		"id": "22222222-abcd-efgh-ijkl-9876543210ef",
+		"created_at": "2023-12-01T12:00:00Z",
+		"updated_at": "2023-12-01T12:00:00Z",
+		"hash": "",
+		"question": {
+		    "id": "33333333-abcd-efgh-ijkl-9876543210ef",
+		    "created_at": "2023-12-01T12:00:00Z",
+		    "updated_at": "2023-12-01T12:00:00Z",
+		    "text": "Sample question text."
+		},
+		"answers": [
+		    {
+			"id": "44444444-abcd-efgh-ijkl-9876543210ef",
+			"text": "Option 1"
+		    },
+		    {
+			"id": "55555555-abcd-efgh-ijkl-9876543210ef",
+			"text": "Option 2"
+		    },
+		    {
+			"id": "66666666-abcd-efgh-ijkl-9876543210ef",
+			"text": "Option 3"
+		    },
+		    {
+			"id": "77777777-abcd-efgh-ijkl-9876543210ef",
+			"text": "Option 4"
+		    }
+		],
+		"tags": [
+		    {
+			"CreatedAt": "2023-12-01T12:00:00Z",
+			"UpdatedAt": "2023-12-01T12:00:00Z",
+			"DeletedAt": null,
+			"name": "#tag2"
+		    }
+		],
+		"correct": {
+		    "id": "44444444-abcd-efgh-ijkl-9876543210ef",
+		    "text": "Option 1"
+		},
+		"CorrectPos": 0,
+		"type": 0
+	    }
+	]
+    }
+}
+`
+
+type serverTestSuite struct {
+	prettytest.Suite
+}
+
+func TestRunner(t *testing.T) {
+	slog.SetDefault(slog.New(
+		tint.NewHandler(os.Stderr, &tint.Options{
+			Level:      slog.LevelError,
+			TimeFormat: time.Kitchen,
+		}),
+	))
+
+	prettytest.Run(
+		t,
+		new(serverTestSuite),
+	)
+}
+
+func (t *serverTestSuite) TestCreate() {
+
+	DefaultDataDir = "testdata"
+
+	s, err := NewDefaultServer()
+	t.Nil(err)
+
+	if !t.Failed() {
+		request, _ := http.NewRequest(http.MethodPost, "/create", strings.NewReader(examPayload))
+		response := httptest.NewRecorder()
+
+		handler := http.HandlerFunc(s.createExamSessionHandler)
+
+		handler.ServeHTTP(response, request)
+
+		t.Equal(http.StatusOK, response.Code)
+
+		if !t.Failed() {
+			var session *models.Session
+
+			err := json.Unmarshal(response.Body.Bytes(), &session)
+			t.Nil(err)
+
+			path := filepath.Join(GetDefaultSessionDir(), "session_fe0a7ee0-f31a-413d-f123-ab5068bcaaaa.json")
+
+			_, err = os.Stat(path)
+			t.Nil(err)
+
+			defer os.Remove(path)
+
+			t.Equal("fe0a7ee0-f31a-413d-f123-ab5068bcaaaa", session.ID)
+
+		}
+	}
+}
+
+func (t *serverTestSuite) TestRead() {
+
+	DefaultDataDir = "testdata"
+
+	s, err := NewDefaultServer()
+	t.Nil(err)
+
+	if !t.Failed() {
+		request, _ := http.NewRequest(http.MethodPost, "/create", strings.NewReader(examPayload))
+		response := httptest.NewRecorder()
+
+		handler := http.HandlerFunc(s.createExamSessionHandler)
+
+		handler.ServeHTTP(response, request)
+
+		t.Equal(http.StatusOK, response.Code)
+
+		if !t.Failed() {
+			var session *models.Session
+
+			err := json.Unmarshal(response.Body.Bytes(), &session)
+			t.Nil(err)
+
+			path := filepath.Join(GetDefaultSessionDir(), "session_fe0a7ee0-f31a-413d-f123-ab5068bcaaaa.json")
+			_, err = os.Stat(path)
+			t.Nil(err)
+
+			if !t.Failed() {
+				defer os.RemoveAll(path)
+
+				request, _ := http.NewRequest(http.MethodGet, fmt.Sprintf("/%s/%s", session.ID, "111222"), nil)
+				response := httptest.NewRecorder()
+
+				handler := http.HandlerFunc(s.getExamHandler)
+
+				handler.ServeHTTP(response, request)
+
+				t.Equal(http.StatusOK, response.Code)
+
+			}
+		}
+	}
+}

client/client.go

@@ -1,106 +0,0 @@
-package client
-
-import "git.andreafazzi.eu/andrea/probo/models"
-
-type Question struct {
-	Text string `json:"text"`
-}
-
-type Answer struct {
-	Text    string `json:"text"`
-	Correct bool   `json:"correct"`
-}
-
-type Quiz struct {
-	Question *Question `json:"question"`
-	Answers  []*Answer `json:"answers"`
-}
-
-type Collection struct {
-	Name  string `json:"name"`
-	Query string `json:"query"`
-}
-
-type Participant struct {
-	Firstname  string            `json:"firstname"`
-	Lastname   string            `json:"lastname"`
-	Token      uint              `json:"token"`
-	Attributes map[string]string `json:"attributes"`
-}
-
-type Exam struct {
-	Name        string `json:"name"`
-	Description string `json:"description"`
-
-	ParticipantID string `json:"participant_id"`
-	CollectionID  string `json:"collection_id"`
-}
-
-type BaseResponse struct {
-	Status  string `json:"status"`
-	Message string `json:"message"`
-}
-
-type ReadAllQuizResponse struct {
-	BaseResponse
-	Content []*models.Quiz `json:"content"`
-}
-
-type CreateQuizResponse struct {
-	BaseResponse
-	Content *models.Quiz `json:"content"`
-}
-
-type UpdateQuizResponse struct {
-	BaseResponse
-	Content *models.Quiz `json:"content"`
-}
-
-type CreateQuestionRequest struct {
-	*Question
-}
-
-type CreateAnswerRequest struct {
-	*Answer
-}
-
-type CreateUpdateQuizRequest struct {
-	*Quiz
-	*models.Meta
-}
-
-type DeleteQuizRequest struct {
-	ID string
-}
-
-type CreateUpdateCollectionRequest struct {
-	*Collection
-}
-
-type DeleteCollectionRequest struct {
-	ID string
-}
-
-type CreateUpdateExamRequest struct {
-	*Exam
-}
-
-type DeleteExamRequest struct {
-	ID string
-}
-
-type ReadExamByIDRequest struct {
-	ID string
-}
-
-type CreateUpdateParticipantRequest struct {
-	*Participant
-}
-
-type DeleteParticipantRequest struct {
-	ID string
-}
-
-type ReadParticipantByIDRequest struct {
-	ID string
-}

cmd/common.go

@@ -0,0 +1,8 @@
+package cmd
+
+var logo = ` ____            _           
+|  _ \ _ __ ___ | |__   ___  
+| |_) | '__/ _ \| '_ \ / _ \ 
+|  __/| | | (_) | |_) | (_) |
+|_|   |_|  \___/|_.__/ \___/
+`

cmd/filter.go

@@ -0,0 +1,61 @@
+/*
+Copyright © 2024 NAME HERE <EMAIL ADDRESS>
+*/
+package cmd
+
+import (
+	"fmt"
+	"os"
+
+	"git.andreafazzi.eu/andrea/probo/cmd/filter"
+	"git.andreafazzi.eu/andrea/probo/cmd/util"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+	"github.com/muesli/termenv"
+	"github.com/spf13/cobra"
+)
+
+var filterCmd = &cobra.Command{
+	Use:   "filter {participants,quizzes,responses}",
+	Short: "Filter the given store",
+	Long:  util.RenderMarkdownTemplates("cli/*.tmpl", "cli/filter/*.tmpl"),
+	Run:   runFilter,
+}
+
+func init() {
+	rootCmd.AddCommand(filterCmd)
+	filterCmd.PersistentFlags().StringP("input", "i", "", "Specify an input file")
+}
+
+func runFilter(cmd *cobra.Command, args []string) {
+	var storeType string
+
+	path, err := cmd.Flags().GetString("input")
+	if err != nil {
+		panic(err)
+	}
+
+	f := util.LogToFile()
+	if f != nil {
+		defer f.Close()
+	}
+
+	lipgloss.SetColorProfile(termenv.TrueColor)
+
+	storeType = args[0]
+
+	model, err := tea.NewProgram(
+		filter.New(path, storeType, util.ReadStdin()),
+		tea.WithOutput(os.Stderr),
+	).Run()
+	if err != nil {
+		fmt.Println("Error running program:", err)
+		os.Exit(1)
+	}
+
+	result := model.(*filter.FilterModel)
+
+	if result.Result != "" {
+		fmt.Fprintf(os.Stdout, result.Result)
+	}
+}

cmd/filter/filter.go

@@ -0,0 +1,418 @@
+package filter
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"os"
+	"strings"
+
+	"git.andreafazzi.eu/andrea/probo/pkg/store/file"
+	"github.com/alecthomas/chroma/quick"
+	"github.com/charmbracelet/bubbles/key"
+	"github.com/charmbracelet/bubbles/spinner"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+	"github.com/itchyny/gojq"
+	foam "github.com/remogatto/sugarfoam"
+	"github.com/remogatto/sugarfoam/components/group"
+	"github.com/remogatto/sugarfoam/components/header"
+	"github.com/remogatto/sugarfoam/components/help"
+	"github.com/remogatto/sugarfoam/components/statusbar"
+	"github.com/remogatto/sugarfoam/components/textinput"
+	"github.com/remogatto/sugarfoam/components/viewport"
+	"github.com/remogatto/sugarfoam/layout"
+)
+
+type FilterModel struct {
+	// UI
+	textInput *textinput.Model
+	viewport  *viewport.Model
+	group     *group.Model
+	help      *help.Model
+	statusBar *statusbar.Model
+	spinner   spinner.Model
+
+	// Layout
+	document *layout.Layout
+
+	// Key bindings
+	bindings *keyBindings
+
+	// file store
+	store  []any
+	result []any
+
+	// json
+	lastQuery    string
+	FilteredJson string
+	InputJson    string
+	Result       string
+
+	// filter file
+	filterFilePath string
+
+	state int
+
+	filterType string
+}
+
+func New(path string, filterType string, stdin string) *FilterModel {
+	textInput := textinput.New(
+		textinput.WithPlaceholder("Write your jq filter here..."),
+	)
+
+	viewport := viewport.New()
+
+	group := group.New(
+		group.WithItems(textInput, viewport),
+		group.WithLayout(
+			layout.New(
+				layout.WithStyles(&layout.Styles{Container: lipgloss.NewStyle().Padding(1, 0, 1, 0)}),
+				layout.WithItem(textInput),
+				layout.WithItem(viewport),
+			),
+		),
+	)
+
+	bindings := newBindings(group)
+	statusBar := statusbar.New(bindings)
+
+	s := spinner.New(
+		spinner.WithStyle(
+			lipgloss.NewStyle().Foreground(lipgloss.Color("265"))),
+	)
+	s.Spinner = spinner.Dot
+
+	header := header.New(
+		header.WithContent(
+			lipgloss.NewStyle().
+				Bold(true).
+				Border(lipgloss.NormalBorder(), false, false, true, false).
+				Render(filterTypeFormats[filterType]),
+		),
+	)
+
+	help := help.New(
+		bindings,
+		help.WithStyles(&foam.Styles{NoBorder: lipgloss.NewStyle().Padding(1, 1)}))
+
+	document := layout.New(
+		layout.WithStyles(&layout.Styles{Container: lipgloss.NewStyle().Margin(1)}),
+		layout.WithItem(header),
+		layout.WithItem(group),
+		layout.WithItem(help),
+		layout.WithItem(statusBar),
+	)
+
+	return &FilterModel{
+		textInput:      textInput,
+		viewport:       viewport,
+		group:          group,
+		statusBar:      statusBar,
+		spinner:        s,
+		document:       document,
+		bindings:       bindings,
+		help:           help,
+		filterType:     filterType,
+		filterFilePath: path,
+		InputJson:      stdin,
+	}
+
+}
+
+func (m *FilterModel) Init() tea.Cmd {
+	var cmds []tea.Cmd
+
+	cmds = append(cmds, m.group.Init(), m.loadStore(), m.spinner.Tick)
+
+	m.group.Focus()
+
+	return tea.Batch(cmds...)
+}
+
+func (m *FilterModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	var cmds []tea.Cmd
+
+	switch msg := msg.(type) {
+
+	case tea.WindowSizeMsg:
+		m.document.SetSize(msg.Width, msg.Height)
+
+	case tea.KeyMsg:
+		switch {
+		case key.Matches(msg, m.bindings.quit):
+			m.FilteredJson = ""
+			return m, tea.Quit
+
+		case key.Matches(msg, m.bindings.enter):
+			m.marshalJSON()
+			return m, tea.Quit
+		}
+
+	case storeLoadedMsg:
+		cmds = append(cmds, m.handleStoreLoaded(msg))
+
+	case resultMsg:
+		cmds = append(cmds, m.handleFiltered(msg))
+		m.state = FilterState
+
+	case errorMsg:
+		m.handleError(msg)
+		m.state = ErrorState
+	}
+
+	cmds = m.handleState(msg, cmds)
+
+	return m, tea.Batch(cmds...)
+}
+
+func (m *FilterModel) View() string {
+	return m.document.View()
+}
+
+func (m *FilterModel) marshalJSON() {
+	if m.FilteredJson == "" {
+		return
+	}
+	if m.InputJson != "" {
+		m.Result = fmt.Sprintf("{%s, \"%s\": %s}", strings.Trim(m.InputJson, "{}"), m.filterType, m.FilteredJson)
+	} else {
+		var result interface{}
+
+		filtered := fmt.Sprintf("{\"%s\": %s}", m.filterType, m.FilteredJson)
+		err := json.Unmarshal([]byte(filtered), &result)
+		if err != nil {
+			panic(err)
+		}
+
+		resultJson, err := json.Marshal(result)
+		if err != nil {
+			panic(err)
+		}
+		m.Result = string(resultJson)
+	}
+}
+
+func (m *FilterModel) showErrorOnStatusBar(err error) {
+	m.statusBar.SetContent(
+		stateFormats[ErrorState][0],
+		fmt.Sprintf(stateFormats[ErrorState][1], err),
+		stateFormats[ErrorState][2],
+	)
+}
+
+func (m *FilterModel) handleError(msg tea.Msg) {
+	err := msg.(errorMsg)
+
+	m.statusBar.SetContent(
+		stateFormats[ErrorState][0],
+		fmt.Sprintf(stateFormats[ErrorState][1], err.error),
+		stateFormats[ErrorState][2],
+	)
+}
+
+func (m *FilterModel) handleStoreLoaded(msg tea.Msg) tea.Cmd {
+	return func() tea.Msg {
+		storeMsg := msg.(storeLoadedMsg)
+		m.store = storeMsg.store
+		m.state = FilterState
+
+		if m.filterFilePath != "" {
+			jq, err := os.ReadFile(m.filterFilePath)
+			if err != nil {
+				panic(err)
+			}
+			m.textInput.SetValue(strings.TrimSpace(string(jq)))
+			return m.query(strings.TrimSpace(string(jq)))
+		}
+
+		coloredJson, err := toColoredJson(m.store)
+		if err != nil {
+			return errorMsg{err}
+		}
+
+		m.viewport.SetContent(coloredJson)
+
+		return m.query(".")
+	}
+}
+
+func (m *FilterModel) handleFiltered(msg tea.Msg) tea.Cmd {
+	return func() tea.Msg {
+		m.result = msg.(resultMsg).result
+
+		coloredJson, err := toColoredJson(m.result)
+		if err != nil {
+			return errorMsg{err}
+		}
+
+		json, err := toJson(m.result)
+		if err != nil {
+			return errorMsg{err}
+		}
+
+		m.FilteredJson = json
+
+		m.viewport.SetContent(coloredJson)
+
+		return nil
+	}
+}
+
+func (m *FilterModel) handleState(msg tea.Msg, cmds []tea.Cmd) []tea.Cmd {
+	_, cmd := m.group.Update(msg)
+
+	if m.state == LoadingStoreState {
+		return m.updateSpinner(msg, cmd, cmds)
+	}
+
+	cmds = append(cmds, cmd, m.query(m.textInput.Value()))
+
+	if m.state != ErrorState {
+		m.statusBar.SetContent(stateFormats[FilterState]...)
+	}
+
+	return cmds
+}
+
+func (m *FilterModel) updateSpinner(msg tea.Msg, cmd tea.Cmd, cmds []tea.Cmd) []tea.Cmd {
+	m.spinner, cmd = m.spinner.Update(msg)
+
+	m.statusBar.SetContent(fmt.Sprintf(stateFormats[m.state][0], m.spinner.View()), stateFormats[m.state][1], stateFormats[m.state][2])
+
+	cmds = append(cmds, cmd)
+
+	return cmds
+}
+
+func (m *FilterModel) loadStore() tea.Cmd {
+	return func() tea.Msg {
+		var jsonStore []byte
+
+		switch m.filterType {
+		case "participants":
+			pStore, err := file.NewDefaultParticipantFileStore()
+			if err != nil {
+				panic(err)
+			}
+
+			jsonStore, err = pStore.Storer.Json()
+			if err != nil {
+				panic(err)
+			}
+		case "quizzes":
+			qStore, err := file.NewDefaultQuizFileStore()
+			if err != nil {
+				panic(err)
+			}
+
+			jsonStore, err = qStore.Storer.Json()
+			if err != nil {
+				panic(err)
+			}
+
+		case "responses":
+			qStore, err := file.NewDefaultResponseFileStore()
+			if err != nil {
+				panic(err)
+			}
+
+			jsonStore, err = qStore.Storer.Json()
+			if err != nil {
+				panic(err)
+			}
+		default:
+			panic("Unknown filter type!")
+		}
+
+		v := make([]any, 0)
+
+		err := json.Unmarshal(jsonStore, &v)
+		if err != nil {
+			return errorMsg{err}
+		}
+
+		return storeLoadedMsg{v}
+	}
+}
+
+func (m *FilterModel) query(input string) tea.Cmd {
+	return func() tea.Msg {
+		if input == m.lastQuery {
+			return nil
+		}
+
+		if m.state == LoadingStoreState {
+			return nil
+		}
+
+		m.lastQuery = input
+
+		query, err := gojq.Parse(input)
+		if err != nil {
+			return errorMsg{fmt.Errorf("jq query parse error: %v", err)}
+		}
+
+		var result []string
+
+		iter := query.Run(m.store)
+		for {
+			v, ok := iter.Next()
+			if !ok {
+				break
+			}
+
+			if err, ok := v.(error); ok {
+				return errorMsg{fmt.Errorf("jq query run error: %v", err)}
+			}
+
+			b, err := json.MarshalIndent(v, "", "  ")
+			if err != nil {
+				return errorMsg{err}
+			}
+
+			result = append(result, string(b))
+		}
+
+		v := make([]any, 0)
+
+		err = json.Unmarshal([]byte(strings.Join(result, "\n")), &v)
+		if err != nil {
+			return errorMsg{err}
+		}
+
+		return resultMsg{v}
+	}
+}
+
+func toColoredJson(data []any) (string, error) {
+	result, err := json.MarshalIndent(data, "", " ")
+	if err != nil {
+		return "", err
+	}
+
+	coloredBytes := make([]byte, 0)
+	buffer := bytes.NewBuffer(coloredBytes)
+
+	err = quick.Highlight(buffer, string(result), "json", "terminal16m", "dracula")
+	if err != nil {
+		panic(err)
+	}
+
+	return sanitize(buffer.String()), nil
+}
+
+func toJson(data []any) (string, error) {
+	result, err := json.Marshal(data)
+	if err != nil {
+		return "", err
+	}
+	return string(result), nil
+}
+func sanitize(text string) string {
+	// FIXME: The use of a standard '-' character causes rendering
+	// issues within the viewport. Further investigation is
+	// required to resolve this problem.
+	return strings.Replace(text, "-", "–", -1)
+}

cmd/filter/format.go

@@ -0,0 +1,14 @@
+package filter
+
+var (
+	stateFormats = map[int][]string{
+		FilterState:       []string{"FILTER 📖", "Write your jq command in the input box to start filtering. Press enter to return the result.", "STORE 🟢"},
+		LoadingStoreState: []string{"LOAD %s", "Loading the store...", "STORE 🔴"},
+		ErrorState:        []string{"ERROR 📖", "%v", "STORE 🟢"},
+	}
+	filterTypeFormats = map[string]string{
+		"participants": "👫 Participants filter 👫",
+		"quizzes":      "❓ Quizzes filter ❓",
+		"responses":    "📝 Responses filter 📝",
+	}
+)

cmd/filter/keymap.go

@@ -0,0 +1,55 @@
+package filter
+
+import (
+	"github.com/charmbracelet/bubbles/key"
+	"github.com/remogatto/sugarfoam/components/group"
+	"github.com/remogatto/sugarfoam/components/viewport"
+)
+
+type keyBindings struct {
+	group *group.Model
+
+	quit, enter key.Binding
+}
+
+func (k *keyBindings) ShortHelp() []key.Binding {
+	keys := make([]key.Binding, 0)
+
+	current := k.group.Current()
+
+	switch item := current.(type) {
+	case *viewport.Model:
+		keys = append(
+			keys,
+			item.KeyMap.Up,
+			item.KeyMap.Down,
+		)
+	}
+
+	keys = append(
+		keys,
+		k.quit,
+	)
+
+	return keys
+}
+
+func (k keyBindings) FullHelp() [][]key.Binding {
+	return [][]key.Binding{
+		{
+			k.quit,
+		},
+	}
+}
+
+func newBindings(g *group.Model) *keyBindings {
+	return &keyBindings{
+		group: g,
+		quit: key.NewBinding(
+			key.WithKeys("esc"), key.WithHelp("esc", "Quit app"),
+		),
+		enter: key.NewBinding(
+			key.WithKeys("enter"), key.WithHelp("enter", "Quit app and return the results"),
+		),
+	}
+}

cmd/filter/message.go

@@ -0,0 +1,13 @@
+package filter
+
+type storeLoadedMsg struct {
+	store []any
+}
+
+type resultMsg struct {
+	result []any
+}
+
+type errorMsg struct {
+	error error
+}

cmd/filter/state.go

@@ -0,0 +1,7 @@
+package filter
+
+const (
+	LoadingStoreState = iota
+	FilterState
+	ErrorState
+)

cmd/import.go

@@ -0,0 +1,39 @@
+/*
+Copyright © 2024 NAME HERE <EMAIL ADDRESS>
+*/
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+// importCmd represents the import command
+var importCmd = &cobra.Command{
+	Use:   "import",
+	Short: "Import entities",
+	Long: `A longer description that spans multiple lines and likely contains examples
+and usage of using your command. For example:
+
+Cobra is a CLI library for Go that empowers applications.
+This application is a tool to generate the needed files
+to quickly create a Cobra application.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Println("import called")
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(importCmd)
+
+	// Here you will define your flags and configuration settings.
+
+	// Cobra supports Persistent Flags which will work for this command
+	// and all subcommands, e.g.:
+	// importCmd.PersistentFlags().String("foo", "", "A help for foo")
+
+	// Cobra supports local flags which will only run when this command
+	// is called directly, e.g.:
+	// importCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+}

cmd/init.go

@@ -0,0 +1,38 @@
+/*
+Copyright © 2024 NAME HERE <EMAIL ADDRESS>
+*/
+package cmd
+
+import (
+	"git.andreafazzi.eu/andrea/probo/cmd/util"
+	"git.andreafazzi.eu/andrea/probo/embed"
+	"github.com/spf13/cobra"
+)
+
+// initCmd represents the init command
+var initCmd = &cobra.Command{
+	Use:   "init",
+	Short: "Initialize a working directory",
+	Long:  util.RenderMarkdownTemplates("cli/*.tmpl", "cli/init/*.tmpl"),
+	Run:   runInit,
+}
+
+func init() {
+	rootCmd.AddCommand(initCmd)
+}
+
+func runInit(cmd *cobra.Command, args []string) {
+	err := embed.CopyToWorkingDirectory(embed.Data)
+	if err != nil {
+		panic(err)
+	}
+	err = embed.CopyToWorkingDirectory(embed.Templates)
+	if err != nil {
+		panic(err)
+	}
+	err = embed.CopyToWorkingDirectory(embed.Public)
+	if err != nil {
+		panic(err)
+	}
+
+}

cmd/rank.go

@@ -0,0 +1,59 @@
+/*
+Copyright © 2024 NAME HERE <EMAIL ADDRESS>
+*/
+package cmd
+
+import (
+	"fmt"
+	"os"
+
+	"git.andreafazzi.eu/andrea/probo/cmd/rank"
+	"git.andreafazzi.eu/andrea/probo/cmd/util"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+	"github.com/muesli/termenv"
+	"github.com/spf13/cobra"
+)
+
+// rankCmd represents the rank command
+var rankCmd = &cobra.Command{
+	Use:   "rank",
+	Short: "Show a ranking from the given responses.",
+	Long:  util.RenderMarkdownTemplates("cli/*.tmpl", "cli/rank/*.tmpl"),
+	Run:   runRank,
+}
+
+func runRank(cmd *cobra.Command, args []string) {
+	path, err := cmd.Flags().GetString("input")
+	if err != nil {
+		panic(err)
+	}
+
+	f := util.LogToFile()
+	if f != nil {
+		defer f.Close()
+	}
+
+	lipgloss.SetColorProfile(termenv.TrueColor)
+
+	model, err := tea.NewProgram(
+		rank.New(path, util.ReadStdin()),
+		tea.WithOutput(os.Stderr),
+	).Run()
+	if err != nil {
+		fmt.Println("Error running program:", err)
+		os.Exit(1)
+	}
+
+	result := model.(*rank.RankModel)
+
+	if result.Result != "" {
+		fmt.Fprintf(os.Stdout, result.Result)
+	}
+
+}
+
+func init() {
+	rootCmd.AddCommand(rankCmd)
+	rootCmd.PersistentFlags().StringP("input", "i", "", "Specify an input file")
+}

cmd/rank/format.go

@@ -0,0 +1,9 @@
+package rank
+
+var (
+	stateFormats = map[int][]string{
+		BrowseState:          []string{"BROWSE 📖", "Total scores: %d", "🟢"},
+		ExecutingScriptState: []string{"EXE %s", "Executing script...", "🔴"},
+		ErrorState:           []string{"ERROR 📖", "%v", "🔴"},
+	}
+)

cmd/rank/keymap.go

@@ -0,0 +1,62 @@
+package rank
+
+import (
+	"github.com/charmbracelet/bubbles/key"
+	"github.com/remogatto/sugarfoam/components/group"
+	"github.com/remogatto/sugarfoam/components/table"
+	"github.com/remogatto/sugarfoam/components/viewport"
+)
+
+type keyBindings struct {
+	group *group.Model
+
+	quit, enter key.Binding
+}
+
+func (k *keyBindings) ShortHelp() []key.Binding {
+	keys := make([]key.Binding, 0)
+
+	current := k.group.Current()
+
+	switch item := current.(type) {
+	case *table.Model:
+		keys = append(
+			keys,
+			item.KeyMap.LineUp,
+			item.KeyMap.LineDown,
+		)
+
+	case *viewport.Model:
+		keys = append(
+			keys,
+			item.KeyMap.Up,
+			item.KeyMap.Down,
+		)
+	}
+
+	keys = append(
+		keys,
+		k.group.KeyMap.FocusNext,
+		k.group.KeyMap.FocusPrev,
+		k.quit,
+	)
+
+	return keys
+}
+
+func (k keyBindings) FullHelp() [][]key.Binding {
+	return [][]key.Binding{
+		{
+			k.quit,
+		},
+	}
+}
+
+func newBindings(g *group.Model) *keyBindings {
+	return &keyBindings{
+		group: g,
+		quit: key.NewBinding(
+			key.WithKeys("esc"), key.WithHelp("esc", "quit app"),
+		),
+	}
+}

cmd/rank/message.go

@@ -0,0 +1,19 @@
+package rank
+
+import "git.andreafazzi.eu/andrea/probo/pkg/store/file"
+
+type storeLoadedMsg struct {
+	store *file.SessionFileStore
+}
+
+type resultMsg struct {
+	result []any
+}
+
+type errorMsg struct {
+	error error
+}
+
+type scriptExecutedMsg struct {
+	result string
+}

cmd/rank/rank.go

@@ -0,0 +1,448 @@
+package rank
+
+import (
+	"bytes"
+	"cmp"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"os"
+	"slices"
+	"strconv"
+	"text/template"
+
+	"git.andreafazzi.eu/andrea/probo/pkg/models"
+	"git.andreafazzi.eu/andrea/probo/pkg/store/file"
+
+	"github.com/charmbracelet/bubbles/key"
+	"github.com/charmbracelet/bubbles/spinner"
+	btTable "github.com/charmbracelet/bubbles/table"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/glamour"
+	"github.com/charmbracelet/lipgloss"
+	"github.com/d5/tengo/v2"
+	"github.com/d5/tengo/v2/stdlib"
+	foam "github.com/remogatto/sugarfoam"
+	"github.com/remogatto/sugarfoam/components/group"
+	"github.com/remogatto/sugarfoam/components/header"
+	"github.com/remogatto/sugarfoam/components/help"
+	"github.com/remogatto/sugarfoam/components/statusbar"
+	"github.com/remogatto/sugarfoam/components/table"
+	"github.com/remogatto/sugarfoam/components/viewport"
+	"github.com/remogatto/sugarfoam/layout"
+	"github.com/remogatto/sugarfoam/layout/tiled"
+)
+
+var responseTmpl = `{{range $answer := .Answers}}
+{{$answer.Quiz|toMarkdown $.Width}}
+  R: {{$answer|toLipgloss}}
+{{end}}
+`
+
+type ParticipantScore struct {
+	Participant *models.Participant `json:"participant"`
+	Response    *models.Response    `json:"response"`
+	Score       int                 `json:"score"`
+}
+
+type Rank struct {
+	Scores []*ParticipantScore `json:"scores"`
+}
+
+type RankModel struct {
+	// UI
+	viewport  *viewport.Model
+	table     *table.Model
+	group     *group.Model
+	help      *help.Model
+	statusBar *statusbar.Model
+	spinner   spinner.Model
+
+	// Layout
+	document *layout.Layout
+
+	// Key bindings
+	bindings *keyBindings
+
+	// json
+	InputJson string
+	Result    string
+
+	// session
+	rank *Rank
+
+	// response
+	responseTmpl *template.Template
+
+	// filter file
+	scriptFilePath string
+
+	// markdown
+	mdRenderer *glamour.TermRenderer
+
+	state int
+}
+
+func New(path string, stdin string) *RankModel {
+	viewport := viewport.New()
+
+	table := table.New(table.WithRelWidths(10, 20, 30, 30, 10))
+	table.Model.SetColumns([]btTable.Column{
+		{Title: "Pos", Width: 5},
+		{Title: "Token", Width: 10},
+		{Title: "Lastname", Width: 40},
+		{Title: "Firstname", Width: 40},
+		{Title: "Score", Width: 5},
+	})
+
+	group := group.New(
+		group.WithItems(table, viewport),
+		group.WithLayout(
+			layout.New(
+				layout.WithStyles(&layout.Styles{Container: lipgloss.NewStyle().Padding(1, 1)}),
+				layout.WithItem(tiled.New(table, viewport)),
+			),
+		),
+	)
+
+	bindings := newBindings(group)
+	statusBar := statusbar.New(bindings)
+
+	s := spinner.New(
+		spinner.WithStyle(
+			lipgloss.NewStyle().Foreground(lipgloss.Color("265"))),
+	)
+	s.Spinner = spinner.Dot
+
+	header := header.New(
+		header.WithContent(
+			lipgloss.NewStyle().
+				Bold(true).
+				Border(lipgloss.NormalBorder(), false, false, true, false).
+				Render("😎 Rank 😎"),
+		),
+	)
+
+	help := help.New(
+		bindings,
+		help.WithStyles(&foam.Styles{NoBorder: lipgloss.NewStyle().Padding(1, 1)}))
+
+	document := layout.New(
+		layout.WithStyles(&layout.Styles{Container: lipgloss.NewStyle().Margin(1)}),
+		layout.WithItem(header),
+		layout.WithItem(group),
+		layout.WithItem(help),
+		layout.WithItem(statusBar),
+	)
+
+	renderer, err := glamour.NewTermRenderer(
+		glamour.WithStandardStyle("dracula"),
+		glamour.WithWordWrap(80),
+	)
+	if err != nil {
+		panic(err)
+	}
+
+	tmpl, err := template.New("response").
+		Funcs(template.FuncMap{
+			"toMarkdown": func(width int, quiz *models.Quiz) string {
+				md, err := models.QuizToMarkdown(quiz)
+				if err != nil {
+					panic(err)
+				}
+
+				result, err := renderer.Render(md)
+				if err != nil {
+					panic(err)
+				}
+
+				return result
+			},
+			"toLipgloss": func(answer *models.ParticipantAnswer) string {
+				color := "#ff0000"
+				if answer.Correct {
+					color = "#00ff00"
+				}
+				return lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color(color)).Render(answer.Answer.Text)
+			},
+		}).
+		Parse(responseTmpl)
+	if err != nil {
+		panic(err)
+	}
+
+	return &RankModel{
+		table:          table,
+		viewport:       viewport,
+		group:          group,
+		statusBar:      statusBar,
+		spinner:        s,
+		document:       document,
+		responseTmpl:   tmpl,
+		bindings:       bindings,
+		help:           help,
+		scriptFilePath: path,
+		InputJson:      stdin,
+		mdRenderer:     renderer,
+	}
+
+}
+
+func (m *RankModel) Init() tea.Cmd {
+	var cmds []tea.Cmd
+
+	cmds = append(cmds, m.group.Init(), m.executeScript(), m.spinner.Tick)
+
+	m.group.Focus()
+
+	return tea.Batch(cmds...)
+}
+
+func (m *RankModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	var cmds []tea.Cmd
+
+	switch msg := msg.(type) {
+
+	case tea.WindowSizeMsg:
+		m.handleWindowSize(msg)
+
+	case tea.KeyMsg:
+		switch {
+		case key.Matches(msg, m.bindings.quit):
+			cmds = append(cmds, tea.Quit)
+		}
+
+	case scriptExecutedMsg:
+		m.handleScriptExecuted(msg)
+
+	case errorMsg:
+		m.handleError(msg)
+		m.state = ErrorState
+	}
+
+	cmds = m.handleState(msg, cmds)
+
+	return m, tea.Batch(cmds...)
+}
+
+func (m *RankModel) View() string {
+	return m.document.View()
+}
+
+func (m *RankModel) executeScript() tea.Cmd {
+	return func() tea.Msg {
+		if m.scriptFilePath == "" {
+			return nil
+		}
+
+		rankJson, err := json.Marshal(Rank{Scores: make([]*ParticipantScore, 0)})
+		if err != nil {
+			panic(err)
+		}
+
+		script, err := os.ReadFile(m.scriptFilePath)
+		if err != nil {
+			panic(err)
+		}
+
+		s := tengo.NewScript(script)
+
+		s.SetImports(stdlib.GetModuleMap("fmt", "json", "rand", "times"))
+		_ = s.Add("input", m.InputJson)
+		_ = s.Add("output", string(rankJson))
+
+		c, err := s.Compile()
+		if err != nil {
+			panic(err)
+		}
+
+		if err := c.Run(); err != nil {
+			panic(err)
+		}
+
+		return scriptExecutedMsg{fmt.Sprintf("%s", c.Get("output"))}
+
+	}
+}
+
+func (m *RankModel) showErrorOnStatusBar(err error) {
+	m.statusBar.SetContent(
+		stateFormats[ErrorState][0],
+		fmt.Sprintf(stateFormats[ErrorState][1], err),
+		stateFormats[ErrorState][2],
+	)
+}
+
+func (m *RankModel) updateTableContent() {
+	rows := make([]btTable.Row, 0)
+
+	for i, score := range m.rank.Scores {
+		rows = append(rows, btTable.Row{
+			strconv.Itoa(i + 1),
+			score.Participant.Token,
+			score.Participant.Lastname,
+			score.Participant.Firstname,
+			strconv.Itoa(score.Score),
+		})
+
+	}
+
+	m.table.SetRows(rows)
+}
+
+func (m *RankModel) updateViewportContent() {
+	if len(m.table.Rows()) == 0 {
+		panic(errors.New("No scores available!"))
+	}
+
+	currentPos := m.table.SelectedRow()[0]
+
+	pos, err := strconv.Atoi(currentPos)
+	if err != nil {
+		panic(err)
+	}
+
+	currentResponse := m.rank.Scores[pos-1]
+
+	var buf bytes.Buffer
+
+	var response struct {
+		*models.Response
+		Width int
+	} = struct {
+		*models.Response
+		Width int
+	}{currentResponse.Response, m.viewport.GetWidth()}
+
+	err = m.responseTmpl.Execute(&buf, response)
+	if err != nil {
+		panic(err)
+	}
+
+	m.viewport.SetContent(buf.String())
+}
+
+func (m *RankModel) handleWindowSize(msg tea.WindowSizeMsg) {
+	m.group.SetSize(msg.Width, msg.Height)
+	m.document.SetSize(msg.Width, msg.Height)
+	m.mdRenderer = m.createMDRenderer()
+}
+
+func (m *RankModel) handleError(msg tea.Msg) {
+	err := msg.(errorMsg)
+
+	m.statusBar.SetContent(
+		stateFormats[ErrorState][0],
+		fmt.Sprintf(stateFormats[ErrorState][1], err.error),
+		stateFormats[ErrorState][2],
+	)
+}
+
+func (m *RankModel) handleScriptExecuted(msg tea.Msg) {
+	rank := new(Rank)
+	jsonData := []byte(msg.(scriptExecutedMsg).result)
+
+	err := json.Unmarshal(jsonData, &rank)
+	if err != nil {
+		panic(err)
+	}
+
+	slices.SortFunc(rank.Scores,
+		func(a, b *ParticipantScore) int {
+			return cmp.Compare(b.Score, a.Score)
+		})
+
+	m.rank = rank
+
+	m.updateTableContent()
+	m.updateViewportContent()
+
+	m.state = BrowseState
+}
+
+func (m *RankModel) handleState(msg tea.Msg, cmds []tea.Cmd) []tea.Cmd {
+	_, cmd := m.group.Update(msg)
+
+	if m.state == ExecutingScriptState {
+		return m.updateSpinner(msg, cmd, cmds)
+	}
+
+	if m.state == BrowseState {
+		m.updateViewportContent()
+	}
+
+	if m.state != ErrorState {
+		m.statusBar.SetContent(
+			stateFormats[BrowseState][0],
+			fmt.Sprintf(stateFormats[BrowseState][1], len(m.rank.Scores)),
+			stateFormats[BrowseState][2],
+		)
+	}
+
+	cmds = append(cmds, cmd)
+
+	return cmds
+}
+
+func (m *RankModel) updateSpinner(msg tea.Msg, cmd tea.Cmd, cmds []tea.Cmd) []tea.Cmd {
+	m.spinner, cmd = m.spinner.Update(msg)
+
+	m.statusBar.SetContent(fmt.Sprintf(stateFormats[m.state][0], m.spinner.View()), stateFormats[m.state][1], stateFormats[m.state][2])
+
+	cmds = append(cmds, cmd)
+
+	return cmds
+}
+
+func (m *RankModel) loadStore() tea.Cmd {
+	return func() tea.Msg {
+		sStore, err := file.NewDefaultSessionFileStore()
+		if err != nil {
+			panic(err)
+		}
+
+		return storeLoadedMsg{sStore}
+	}
+}
+
+func (m *RankModel) createMDRenderer() *glamour.TermRenderer {
+	renderer, err := glamour.NewTermRenderer(
+		glamour.WithStandardStyle("dracula"),
+		glamour.WithWordWrap(m.viewport.GetWidth()),
+	)
+	if err != nil {
+		panic(err)
+	}
+	return renderer
+}
+
+// func toColoredJson(data []any) (string, error) {
+// 	result, err := json.MarshalIndent(data, "", " ")
+// 	if err != nil {
+// 		return "", err
+// 	}
+
+// 	coloredBytes := make([]byte, 0)
+// 	buffer := bytes.NewBuffer(coloredBytes)
+
+// 	err = quick.Highlight(buffer, string(result), "json", "terminal16m", "dracula")
+// 	if err != nil {
+// 		panic(err)
+// 	}
+
+// 		return sanitize(buffer.String()), nil
+// }
+
+// func sanitize(text string) string {
+// 	// FIXME: The use of a standard '-' character causes rendering
+// 	// issues within the viewport. Further investigation is
+// 	// required to resolve this problem.
+// 	return strings.Replace(text, "-", "–", -1)
+// }
+
+// func desanitize(text string) string {
+// 	// FIXME: The use of a standard '-' character causes rendering
+// 	// issues within the viewport. Further investigation is
+// 	// required to resolve this problem.
+// 	return strings.Replace(text, "–", "-", -1)
+// }

cmd/rank/state.go

@@ -0,0 +1,7 @@
+package rank
+
+const (
+	ExecutingScriptState = iota
+	BrowseState
+	ErrorState
+)

cmd/root.go

@@ -0,0 +1,97 @@
+/*
+Copyright © 2024 Andrea Fazzi dev@andreafazzi.eu
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+package cmd
+
+import (
+	"fmt"
+	"os"
+
+	"git.andreafazzi.eu/andrea/probo/cmd/util"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+var (
+	cfgFile string
+)
+
+// rootCmd represents the base command when called without any subcommands
+var rootCmd = &cobra.Command{
+	Use:   "probo",
+	Short: "A Quiz Management System",
+	/*Long: `
+	Probo is a CLI/TUI application that allows for the quick
+	creation of quizzes from markdown files and their distribution
+		  as web pages.`,*/
+	Long: util.RenderMarkdownTemplates("cli/*.tmpl", "cli/root/*.tmpl"),
+
+	// Uncomment the following line if your bare application
+	// has an action associated with it:
+	// Run: func(cmd *cobra.Command, args []string) { },
+}
+
+// Execute adds all child commands to the root command and sets flags appropriately.
+// This is called by main.main(). It only needs to happen once to the rootCmd.
+func Execute() {
+	err := rootCmd.Execute()
+	if err != nil {
+		os.Exit(1)
+	}
+}
+
+func init() {
+	cobra.OnInitialize(initConfig)
+
+	// Here you will define your flags and configuration settings.
+	// Cobra supports persistent flags, which, if defined here,
+	// will be global for your application.
+
+	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.probo.yaml)")
+
+	// Cobra also supports local flags, which will only run
+	// when this action is called directly.
+	rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+}
+
+// initConfig reads in config file and ENV variables if set.
+func initConfig() {
+	if cfgFile != "" {
+		// Use config file from the flag.
+		viper.SetConfigFile(cfgFile)
+	} else {
+		// Find home directory.
+		home, err := os.UserHomeDir()
+		cobra.CheckErr(err)
+
+		// Search config in home directory with name ".probo" (without extension).
+		viper.AddConfigPath(home)
+		viper.SetConfigType("yaml")
+		viper.SetConfigName(".probo")
+	}
+
+	viper.AutomaticEnv() // read in environment variables that match
+
+	// If a config file is found, read it in.
+	if err := viper.ReadInConfig(); err == nil {
+		fmt.Fprintln(os.Stderr, "Using config file:", viper.ConfigFileUsed())
+	}
+}

cmd/serve.go

@@ -0,0 +1,82 @@
+/*
+Copyright © 2024 NAME HERE <EMAIL ADDRESS>
+*/
+package cmd
+
+import (
+	"net/http"
+
+	"git.andreafazzi.eu/andrea/probo/cmd/serve"
+	"git.andreafazzi.eu/andrea/probo/pkg/store/file"
+	"github.com/charmbracelet/log"
+	"github.com/spf13/cobra"
+)
+
+// serveCmd represents the serve command
+var serveCmd = &cobra.Command{
+	Use:   "serve",
+	Short: "Launch a web server to adminster exam sessions",
+	Long: `A longer description that spans multiple lines and likely contains examples
+and usage of using your command. For example:
+
+Cobra is a CLI library for Go that empowers applications.
+This application is a tool to generate the needed files
+to quickly create a Cobra application.`,
+	Run: runServer,
+}
+
+func init() {
+	rootCmd.AddCommand(serveCmd)
+}
+
+func runServer(cmd *cobra.Command, args []string) {
+	sStore, err := file.NewDefaultSessionFileStore()
+	if err != nil {
+		log.Fatal("Session store loading", "err", err)
+	}
+
+	rStore, err := file.NewDefaultResponseFileStore()
+	if err != nil {
+		log.Fatal("Session store loading", "err", err)
+	}
+
+	mux := http.NewServeMux()
+
+	loginController := serve.NewController(sStore, rStore).
+		WithTemplates(
+			"templates/login/layout-login.html.tmpl",
+			"templates/login/login.html.tmpl",
+		).
+		WithHandlerFunc(serve.LoginHandler)
+
+	sessionsController := serve.NewController(sStore, rStore).
+		WithTemplates(
+			"templates/sessions/layout-sessions.html.tmpl",
+			"templates/sessions/sessions.html.tmpl",
+		).
+		WithHandlerFunc(serve.SessionsHandler)
+
+	examController := serve.NewController(sStore, rStore).
+		WithTemplates(
+			"templates/exam/layout-exam.html.tmpl",
+			"templates/exam/exam.html.tmpl",
+		).
+		WithHandlerFunc(serve.ExamHandler)
+
+	mux.Handle("GET /login", serve.Recover(loginController))
+	mux.Handle("POST /login", serve.Recover(loginController))
+
+	mux.Handle("GET /sessions", serve.Recover(sessionsController))
+	mux.Handle("GET /sessions/{uuid}/exams/{participantID}", serve.Recover(examController))
+	mux.Handle("POST /sessions/{uuid}/exams/{participantID}", serve.Recover(examController))
+
+	mux.Handle("GET /public/", http.StripPrefix("/public", http.FileServer(http.Dir("public"))))
+
+	log.Info("Listening...")
+
+	err = http.ListenAndServe(":3000", mux)
+	if err != nil {
+		panic(err)
+	}
+
+}

cmd/serve/controller.go

@@ -0,0 +1,64 @@
+package serve
+
+import (
+	"bytes"
+	"html/template"
+	"net/http"
+
+	"git.andreafazzi.eu/andrea/probo/pkg/store/file"
+)
+
+type Controller struct {
+	handlerFunc http.HandlerFunc
+
+	sStore *file.SessionFileStore
+	rStore *file.ResponseFileStore
+
+	template *template.Template
+}
+
+func NewController(sStore *file.SessionFileStore, rStore *file.ResponseFileStore) *Controller {
+	return &Controller{
+		sStore: sStore,
+		rStore: rStore,
+	}
+}
+
+func (c *Controller) WithHandlerFunc(f func(c *Controller, w http.ResponseWriter, r *http.Request)) *Controller {
+	hf := func(w http.ResponseWriter, r *http.Request) {
+		f(c, w, r)
+	}
+
+	c.handlerFunc = hf
+
+	return c
+}
+
+func (c *Controller) WithTemplates(paths ...string) *Controller {
+	tmpl, err := template.ParseFiles(paths...)
+	if err != nil {
+		panic(err)
+	}
+
+	c.template = tmpl
+	return c
+}
+
+func (c *Controller) ExecuteTemplate(w http.ResponseWriter, data any) error {
+	var buf bytes.Buffer
+
+	err := c.template.Execute(&buf, data)
+	if err != nil {
+		return err
+	}
+
+	w.Header().Set("Content-Type", "text/html; charset=UTF-8")
+
+	buf.WriteTo(w)
+
+	return nil
+}
+
+func (c *Controller) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	c.handlerFunc.ServeHTTP(w, r)
+}

cmd/serve/exam.go

@@ -0,0 +1,81 @@
+package serve
+
+import (
+	"errors"
+	"net/http"
+
+	"git.andreafazzi.eu/andrea/probo/pkg/models"
+	"github.com/charmbracelet/log"
+)
+
+var ExamHandler = func(c *Controller, w http.ResponseWriter, r *http.Request) {
+	_, err := ValidateJwtCookie(r)
+	if err != nil {
+		panic(err)
+	}
+
+	participantID := r.PathValue("participantID")
+
+	session, err := c.sStore.Read(r.PathValue("uuid"))
+	if err != nil {
+		panic(err)
+	}
+
+	exam, ok := session.Exams[participantID]
+	if !ok {
+		panic(errors.New("Exam not found in the store!"))
+	}
+
+	examWithSession := struct {
+		*models.Exam
+		Session *models.Session
+	}{exam, session}
+
+	switch r.Method {
+
+	case http.MethodGet:
+		log.Info("Sending exam to", "participant", exam.Participant, "exam", exam)
+
+		err = c.ExecuteTemplate(w, examWithSession)
+		if err != nil {
+			panic(err)
+		}
+
+	case http.MethodPost:
+		err := r.ParseForm()
+		if err != nil {
+			panic(err)
+		}
+
+		answers := make([]*models.ParticipantAnswer, 0)
+
+		participant := session.Participants[participantID]
+
+		for quizID, values := range r.Form {
+			correct := false
+
+			quiz := session.Quizzes[quizID]
+
+			for _, answerID := range values {
+				if quiz.Correct.ID == answerID {
+					correct = true
+				}
+				answers = append(answers, &models.ParticipantAnswer{Quiz: quiz, Answer: session.Answers[answerID], Correct: correct})
+			}
+		}
+
+		response, err := c.rStore.Create(
+			&models.Response{
+				SessionTitle: session.Title,
+				Participant:  participant,
+				Answers:      answers,
+			})
+		if err != nil {
+			panic(err)
+		}
+
+		log.Info("Saving response", "response", response)
+
+	}
+
+}

cmd/serve/jwt.go

@@ -0,0 +1,36 @@
+package serve
+
+import (
+	"fmt"
+	"net/http"
+	"time"
+
+	"github.com/golang-jwt/jwt"
+)
+
+const jwtExpiresAt = time.Hour
+
+type Claims struct {
+	Token string `json:"token"`
+	jwt.StandardClaims
+}
+
+var (
+	jwtKey = []byte("my-secret")
+)
+
+func ValidateJwtCookie(r *http.Request) (*jwt.Token, error) {
+	cookie, err := r.Cookie("Authorize")
+	if err != nil {
+		return nil, err
+	}
+
+	token, err := jwt.Parse(cookie.Value, func(token *jwt.Token) (interface{}, error) {
+		if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
+			return nil, fmt.Errorf("unexpected signing method: %v", token.Header["alg"])
+		}
+		return jwtKey, nil
+	})
+
+	return token, err
+}

cmd/serve/login.go

@@ -0,0 +1,76 @@
+package serve
+
+import (
+	"errors"
+	"net/http"
+	"time"
+
+	"git.andreafazzi.eu/andrea/probo/pkg/models"
+	"github.com/charmbracelet/log"
+	"github.com/golang-jwt/jwt"
+)
+
+var LoginHandler = func(c *Controller, w http.ResponseWriter, r *http.Request) {
+	if r.Method == http.MethodPost {
+		err := r.ParseForm()
+		if err != nil {
+			panic(err)
+		}
+
+		pToken := r.FormValue("participantToken")
+		if pToken == "" {
+			panic(errors.New("Token not found parsing the request!"))
+		}
+
+		log.Info("Received", "participantToken", pToken)
+
+		var loggedParticipant *models.Participant
+
+		done := false
+		for _, session := range c.sStore.ReadAll() {
+			if done {
+				break
+			}
+			for _, exam := range session.Exams {
+				if pToken == exam.Participant.Token {
+					loggedParticipant = exam.Participant
+					done = true
+				}
+			}
+		}
+
+		log.Info("Participant logged in as", "participant", loggedParticipant)
+
+		if loggedParticipant == nil {
+			panic(errors.New("Participant not found!"))
+		}
+
+		claims := &Claims{
+			Token: pToken,
+			StandardClaims: jwt.StandardClaims{
+				ExpiresAt: time.Now().Add(jwtExpiresAt).Unix(),
+			},
+		}
+
+		tokenString, err := jwt.NewWithClaims(jwt.SigningMethodHS256, claims).SignedString([]byte(jwtKey))
+		if err != nil {
+			panic(err)
+		}
+
+		http.SetCookie(w, &http.Cookie{
+			Name:    "Authorize",
+			Value:   tokenString,
+			Expires: time.Now().Add(jwtExpiresAt),
+		})
+
+		log.Info("Released", "jwt", tokenString)
+		log.Info("Redirect to", "url", "/sessions")
+
+		http.Redirect(w, r, "/sessions", http.StatusSeeOther)
+	}
+
+	err := c.ExecuteTemplate(w, nil)
+	if err != nil {
+		panic(err)
+	}
+}

cmd/serve/recover.go

@@ -0,0 +1,22 @@
+package serve
+
+import (
+	"net/http"
+
+	"github.com/charmbracelet/log"
+)
+
+func Recover(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		defer func() {
+			err := recover()
+			if err != nil {
+				log.Error("Recovering from", "err", err)
+				http.Error(w, err.(error).Error(), http.StatusInternalServerError)
+			}
+
+		}()
+
+		next.ServeHTTP(w, r)
+	})
+}

cmd/serve/sessions.go

@@ -0,0 +1,39 @@
+package serve
+
+import (
+	"net/http"
+
+	"git.andreafazzi.eu/andrea/probo/pkg/models"
+	"github.com/golang-jwt/jwt"
+)
+
+var SessionsHandler = func(c *Controller, w http.ResponseWriter, r *http.Request) {
+	token, err := ValidateJwtCookie(r)
+	if err != nil {
+		panic(err)
+	}
+	claims := token.Claims.(jwt.MapClaims)
+
+	var participantSessions []struct {
+		ParticipantID string
+		*models.Session
+	}
+
+	for _, session := range c.sStore.ReadAll() {
+		for _, exam := range session.Exams {
+			if exam.Participant.Token == claims["token"] {
+				s := struct {
+					ParticipantID string
+					*models.Session
+				}{exam.Participant.ID, session}
+				participantSessions = append(participantSessions, s)
+				break
+			}
+		}
+	}
+
+	err = c.ExecuteTemplate(w, participantSessions)
+	if err != nil {
+		panic(err)
+	}
+}

cmd/session.go

@@ -0,0 +1,60 @@
+/*
+Copyright © 2024 NAME HERE <EMAIL ADDRESS>
+*/
+package cmd
+
+import (
+	"fmt"
+	"os"
+
+	"git.andreafazzi.eu/andrea/probo/cmd/session"
+	"git.andreafazzi.eu/andrea/probo/cmd/util"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+	"github.com/muesli/termenv"
+	"github.com/spf13/cobra"
+)
+
+// sessionCmd represents the session command
+var sessionCmd = &cobra.Command{
+	Use:   "session",
+	Short: "Create a new session or update a given one",
+	Long:  "Create a new session or update a given one.",
+	Run:   updateSession,
+}
+
+func init() {
+	updateCmd.AddCommand(sessionCmd)
+
+	sessionCmd.Flags().StringP("script", "s", "", "Execute a tengo script to initiate a session")
+}
+
+func updateSession(cmd *cobra.Command, args []string) {
+	f := util.LogToFile()
+	if f != nil {
+		defer f.Close()
+	}
+
+	path, err := cmd.Flags().GetString("script")
+	if err != nil {
+		panic(err)
+	}
+
+	lipgloss.SetColorProfile(termenv.TrueColor)
+
+	model, err := tea.NewProgram(
+		session.New(path, util.ReadStdin()),
+		tea.WithOutput(os.Stderr),
+	).Run()
+	if err != nil {
+		fmt.Println("Error running program:", err)
+		os.Exit(1)
+	}
+
+	result := model.(*session.SessionModel)
+
+	if result.Result != "" {
+		fmt.Fprintf(os.Stdout, result.Result)
+	}
+
+}

cmd/session/format.go

@@ -0,0 +1,9 @@
+package session
+
+var (
+	stateFormats = map[int][]string{
+		BrowseState:       []string{"BROWSE 📖", "Total sessions in the store: %d, Exams in the current session: %d", "STORE 🟢"},
+		LoadingStoreState: []string{"LOAD %s", "Loading the store...", "STORE 🔴"},
+		ErrorState:        []string{"ERROR 📖", "%v", "STORE 🟢"},
+	}
+)

cmd/session/keymap.go

@@ -0,0 +1,69 @@
+package session
+
+import (
+	"github.com/charmbracelet/bubbles/key"
+	"github.com/remogatto/sugarfoam/components/form"
+	"github.com/remogatto/sugarfoam/components/group"
+	"github.com/remogatto/sugarfoam/components/table"
+	"github.com/remogatto/sugarfoam/components/viewport"
+)
+
+type keyBindings struct {
+	group *group.Model
+
+	quit, enter key.Binding
+}
+
+func (k *keyBindings) ShortHelp() []key.Binding {
+	keys := make([]key.Binding, 0)
+
+	current := k.group.Current()
+
+	switch item := current.(type) {
+	case *table.Model:
+		keys = append(
+			keys,
+			item.KeyMap.LineUp,
+			item.KeyMap.LineDown,
+		)
+
+	case *viewport.Model:
+		keys = append(
+			keys,
+			item.KeyMap.Up,
+			item.KeyMap.Down,
+		)
+	case *form.Model:
+		keys = append(
+			keys,
+			item.KeyBinds()...,
+		)
+
+	}
+
+	keys = append(
+		keys,
+		k.group.KeyMap.FocusNext,
+		k.group.KeyMap.FocusPrev,
+		k.quit,
+	)
+
+	return keys
+}
+
+func (k keyBindings) FullHelp() [][]key.Binding {
+	return [][]key.Binding{
+		{
+			k.quit,
+		},
+	}
+}
+
+func newBindings(g *group.Model) *keyBindings {
+	return &keyBindings{
+		group: g,
+		quit: key.NewBinding(
+			key.WithKeys("esc"), key.WithHelp("esc", "quit app"),
+		),
+	}
+}

cmd/session/message.go

@@ -0,0 +1,19 @@
+package session
+
+import "git.andreafazzi.eu/andrea/probo/pkg/store/file"
+
+type storeLoadedMsg struct {
+	store *file.SessionFileStore
+}
+
+type resultMsg struct {
+	result []any
+}
+
+type errorMsg struct {
+	error error
+}
+
+type scriptExecutedMsg struct {
+	result string
+}

cmd/session/session.go

@@ -0,0 +1,452 @@
+package session
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"os"
+
+	"git.andreafazzi.eu/andrea/probo/pkg/models"
+	"git.andreafazzi.eu/andrea/probo/pkg/store/file"
+
+	"github.com/charmbracelet/bubbles/key"
+	"github.com/charmbracelet/bubbles/spinner"
+	btTable "github.com/charmbracelet/bubbles/table"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/glamour"
+	"github.com/charmbracelet/huh"
+	"github.com/charmbracelet/lipgloss"
+	"github.com/d5/tengo/v2"
+	"github.com/d5/tengo/v2/stdlib"
+	foam "github.com/remogatto/sugarfoam"
+	"github.com/remogatto/sugarfoam/components/form"
+	"github.com/remogatto/sugarfoam/components/group"
+	"github.com/remogatto/sugarfoam/components/header"
+	"github.com/remogatto/sugarfoam/components/help"
+	"github.com/remogatto/sugarfoam/components/statusbar"
+	"github.com/remogatto/sugarfoam/components/table"
+	"github.com/remogatto/sugarfoam/components/viewport"
+	"github.com/remogatto/sugarfoam/layout"
+	"github.com/remogatto/sugarfoam/layout/tiled"
+)
+
+var mockSession = `
+{"participants":[{"Attributes":{"class":"Math 101A"},"created_at":"2024-04-03T09:22:11.201142494+02:00","firstname":"THOMAS","id":"1024758d-0dba-4bec-aaab-339e87a0649b","lastname":"MANN","token":"427628","updated_at":"2024-05-27T13:48:50.096492274+02:00"},{"Attributes":{"class":"Math 101A"},"created_at":"2024-04-04T10:23:12.203143495+02:00","firstname":"JAMES","id":"f3c5a7bd-6fda-4bce-bbbb-333e88a0650c","lastname":"BROWN","token":"428629","updated_at":"2024-05-27T13:48:50.075089555+02:00"},{"Attributes":{"class":"Math 101A"},"created_at":"2024-04-05T11:24:13.204144496+02:00","firstname":"LUCY","id":"g4d6c8cd-7eda-4cce-cccc-444e89a0661d","lastname":"DOE","token":"429630","updated_at":"2024-05-27T13:48:50.079134348+02:00"}], "quizzes": [{"CorrectPos":0,"answers":[{"created_at":"2024-05-27T13:55:26.448679335+02:00","id":"6771592e-4e2c-45f1-b14f-91f943a5616b","text":"3 + 1 = 1 + 3","updated_at":"2024-05-27T13:55:26.448679428+02:00"},{"created_at":"2024-05-27T13:55:26.448681412+02:00","id":"bad7db2a-f5be-4f22-879a-fd783bb1c0a9","text":"3 - 1 = 1 - 3","updated_at":"2024-05-27T13:55:26.448681456+02:00"},{"created_at":"2024-05-27T13:55:26.448683251+02:00","id":"8ae29e51-65a7-4618-8074-58ee90c4fb83","text":"3 / 2 = 2 / 3","updated_at":"2024-05-27T13:55:26.448683289+02:00"},{"created_at":"2024-05-27T13:55:26.448685048+02:00","id":"7d2a9491-338d-4274-9e62-3d2641788777","text":"-3 + 1 = -1 + 3","updated_at":"2024-05-27T13:55:26.448685085+02:00"}],"correct":{"created_at":"2024-05-27T13:55:26.448679335+02:00","id":"6771592e-4e2c-45f1-b14f-91f943a5616b","text":"3 + 1 = 1 + 3","updated_at":"2024-05-27T13:55:26.448679428+02:00"},"created_at":"2024-05-27T13:49:24.170080837+02:00","hash":"","id":"6a21d3fa-d63c-4acf-9238-551692ed74c4","question":{"created_at":"2024-05-27T13:55:26.448673273+02:00","id":"bf19c1f1-6896-4ca2-b7dc-1657adcce4cd","text":"In #mathematics, for the commutative property of addition, we have\nthat:","updated_at":"2024-05-27T13:55:26.448673633+02:00"},"tags":["#mathematics"],"type":0,"updated_at":"2024-05-27T13:55:26.448701931+02:00"},{"CorrectPos":0,"answers":[{"created_at":"2024-05-27T13:55:26.449222989+02:00","id":"37f741c2-12de-4463-b6c0-42b8b5249e7a","text":"3 * (4 + 5) = 3 * 4 + 3 * 5","updated_at":"2024-05-27T13:55:26.449223079+02:00"},{"created_at":"2024-05-27T13:55:26.44922686+02:00","id":"c60b1b81-5e16-4401-831c-d9fffba1d1eb","text":"6 * (2 - 3) = 6 * 2 + 6 * 3","updated_at":"2024-05-27T13:55:26.449226924+02:00"},{"created_at":"2024-05-27T13:55:26.449230299+02:00","id":"fb0ba30c-1e4e-41a1-9630-7f18aa24a6db","text":"7 * (8 + 2) = 7 * 8 - 7 * 2","updated_at":"2024-05-27T13:55:26.449230351+02:00"},{"created_at":"2024-05-27T13:55:26.449233993+02:00","id":"0cfd6fbb-7aac-4d35-aa17-3e62f5297c68","text":"2 * (1 + 2) = (- 2) * 1 - 4","updated_at":"2024-05-27T13:55:26.449234055+02:00"}],"correct":{"created_at":"2024-05-27T13:55:26.449222989+02:00","id":"37f741c2-12de-4463-b6c0-42b8b5249e7a","text":"3 * (4 + 5) = 3 * 4 + 3 * 5","updated_at":"2024-05-27T13:55:26.449223079+02:00"},"created_at":"2024-05-27T13:49:24.173550821+02:00","hash":"","id":"40aa188a-46c6-4f26-9a1e-4d5a028ba367","question":{"created_at":"2024-05-27T13:55:26.449216807+02:00","id":"723acb0a-5c60-4062-8615-fd3494220b4d","text":"In #mathematics, the distributive property allows us to multiply a sum\nor difference by a single number. Which statement correctly applies\nthis property?","updated_at":"2024-05-27T13:55:26.449216918+02:00"},"tags":["#mathematics"],"type":0,"updated_at":"2024-05-27T13:55:26.449281612+02:00"},{"CorrectPos":0,"answers":[{"created_at":"2024-05-27T13:55:26.449440615+02:00","id":"11be2252-45f0-44c1-a9f0-19dcdcd45b68","text":"1","updated_at":"2024-05-27T13:55:26.449440713+02:00"},{"created_at":"2024-05-27T13:55:26.449452222+02:00","id":"971fbf3b-27b1-4b67-9636-ac681056ce62","text":"0","updated_at":"2024-05-27T13:55:26.449452291+02:00"},{"created_at":"2024-05-27T13:55:26.449455664+02:00","id":"d35104b1-37f9-4312-aa21-a470650cb4dc","text":"2","updated_at":"2024-05-27T13:55:26.44945573+02:00"},{"created_at":"2024-05-27T13:55:26.449459322+02:00","id":"220077d2-1994-40ed-8d28-f39d2ebb8dcf","text":"3","updated_at":"2024-05-27T13:55:26.449459397+02:00"}],"correct":{"created_at":"2024-05-27T13:55:26.449440615+02:00","id":"11be2252-45f0-44c1-a9f0-19dcdcd45b68","text":"1","updated_at":"2024-05-27T13:55:26.449440713+02:00"},"created_at":"2024-05-27T13:49:24.175865713+02:00","hash":"","id":"f9fab318-3373-4729-a80f-b681460824e3","question":{"created_at":"2024-05-27T13:55:26.449432971+02:00","id":"af7d973a-a83c-4a18-ac36-92ab6442ef07","text":"In #mathematics, certain numbers have special properties. Identify the\nidentity element for multiplication among the options given:","updated_at":"2024-05-27T13:55:26.449433136+02:00"},"tags":["#mathematics"],"type":0,"updated_at":"2024-05-27T13:55:26.449476666+02:00"}]}`
+
+type SessionModel struct {
+	// UI
+	form      *form.Model
+	viewport  *viewport.Model
+	table     *table.Model
+	group     *group.Model
+	help      *help.Model
+	statusBar *statusbar.Model
+	spinner   spinner.Model
+
+	// Layout
+	document *layout.Layout
+
+	// Key bindings
+	bindings *keyBindings
+
+	// store
+	store    *file.SessionFileStore
+	lenStore int
+	result   []any
+
+	// json
+	InputJson string
+	Result    string
+
+	// session
+	session *models.Session
+
+	// markdown
+	mdRenderer *glamour.TermRenderer
+
+	// filter file
+	scriptFilePath string
+
+	state int
+}
+
+func New(path string, stdin string) *SessionModel {
+	form := form.New(
+		form.WithGroups(huh.NewGroup(
+			huh.NewInput().
+				Key("sessionTitle").
+				Title("Session title").
+				Description("Enter the title of the session").
+				Validate(func(str string) error {
+					if str == "" {
+						return errors.New("You must set a session name!")
+					}
+					return nil
+
+				}),
+		)))
+
+	formBinding := huh.NewDefaultKeyMap()
+	formBinding.Input.Next = key.NewBinding(key.WithKeys("down"), key.WithHelp("down", "next"))
+	formBinding.Input.Prev = key.NewBinding(key.WithKeys("up"), key.WithHelp("up", "prev"))
+	formBinding.Confirm.Next = key.NewBinding(key.WithKeys("down"), key.WithHelp("down", "next"))
+	formBinding.Confirm.Prev = key.NewBinding(key.WithKeys("up"), key.WithHelp("up", "prev"))
+
+	form.WithShowHelp(false).WithTheme(huh.ThemeDracula()).WithKeyMap(formBinding)
+
+	viewport := viewport.New()
+
+	table := table.New(table.WithRelWidths(20, 10, 25, 25, 20))
+	table.Model.SetColumns([]btTable.Column{
+		{Title: "UUID", Width: 20},
+		{Title: "Token", Width: 20},
+		{Title: "Lastname", Width: 20},
+		{Title: "Firstname", Width: 20},
+		{Title: "Class", Width: 20},
+	})
+
+	group := group.New(
+		group.WithItems(form, table, viewport),
+		group.WithLayout(
+			layout.New(
+				layout.WithStyles(&layout.Styles{Container: lipgloss.NewStyle().Padding(1, 1)}),
+				layout.WithItem(form),
+				layout.WithItem(tiled.New(table, viewport)),
+			),
+		),
+	)
+
+	bindings := newBindings(group)
+	statusBar := statusbar.New(bindings)
+
+	s := spinner.New(
+		spinner.WithStyle(
+			lipgloss.NewStyle().Foreground(lipgloss.Color("265"))),
+	)
+	s.Spinner = spinner.Dot
+
+	header := header.New(
+		header.WithContent(
+			lipgloss.NewStyle().
+				Bold(true).
+				Border(lipgloss.NormalBorder(), false, false, true, false).
+				Render("✨ Create session ✨"),
+		),
+	)
+
+	help := help.New(
+		bindings,
+		help.WithStyles(&foam.Styles{NoBorder: lipgloss.NewStyle().Padding(1, 1)}))
+
+	document := layout.New(
+		layout.WithStyles(&layout.Styles{Container: lipgloss.NewStyle().Margin(1)}),
+		layout.WithItem(header),
+		layout.WithItem(group),
+		layout.WithItem(help),
+		layout.WithItem(statusBar),
+	)
+
+	renderer, err := glamour.NewTermRenderer(
+		glamour.WithStandardStyle("dracula"),
+		glamour.WithWordWrap(80),
+	)
+	if err != nil {
+		panic(err)
+	}
+
+	return &SessionModel{
+		form:           form,
+		table:          table,
+		viewport:       viewport,
+		group:          group,
+		statusBar:      statusBar,
+		spinner:        s,
+		document:       document,
+		mdRenderer:     renderer,
+		bindings:       bindings,
+		help:           help,
+		scriptFilePath: path,
+		InputJson:      stdin,
+	}
+
+}
+
+func (m *SessionModel) Init() tea.Cmd {
+	var cmds []tea.Cmd
+
+	cmds = append(cmds, m.group.Init(), m.loadStore(), m.spinner.Tick)
+
+	m.group.Focus()
+
+	return tea.Batch(cmds...)
+}
+
+func (m *SessionModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	var cmds []tea.Cmd
+
+	switch msg := msg.(type) {
+
+	case tea.WindowSizeMsg:
+		m.handleWindowSize(msg)
+
+	case tea.KeyMsg:
+		switch {
+		case key.Matches(msg, m.bindings.quit):
+			cmds = append(cmds, tea.Quit)
+		}
+
+	case storeLoadedMsg:
+		cmds = append(cmds, m.handleStoreLoaded(msg))
+
+	case scriptExecutedMsg:
+		m.handleScriptExecuted(msg)
+
+	case errorMsg:
+		m.handleError(msg)
+		m.state = ErrorState
+	}
+
+	cmds = m.handleState(msg, cmds)
+
+	return m, tea.Batch(cmds...)
+}
+
+func (m *SessionModel) View() string {
+	return m.document.View()
+}
+
+func (m *SessionModel) marshalJSON() (string, error) {
+	session, err := m.createSession()
+	if err != nil {
+		return "", err
+	}
+	resultJson, err := json.Marshal(session)
+	if err != nil {
+		return "", err
+	}
+
+	return string(resultJson), nil
+}
+
+func (m *SessionModel) executeScript() tea.Cmd {
+	return func() tea.Msg {
+		if m.scriptFilePath == "" {
+			return nil
+		}
+
+		sessionJson, err := json.Marshal(models.Session{Exams: map[string]*models.Exam{}})
+		if err != nil {
+			panic(err)
+		}
+
+		script, err := os.ReadFile(m.scriptFilePath)
+		if err != nil {
+			panic(err)
+		}
+
+		s := tengo.NewScript(script)
+
+		s.SetImports(stdlib.GetModuleMap("fmt", "json", "rand", "times"))
+		_ = s.Add("input", m.InputJson)
+		_ = s.Add("output", string(sessionJson))
+
+		c, err := s.Compile()
+		if err != nil {
+			panic(err)
+		}
+
+		if err := c.Run(); err != nil {
+			panic(err)
+		}
+
+		return scriptExecutedMsg{fmt.Sprintf("%s", c.Get("output"))}
+
+	}
+}
+
+func (m *SessionModel) createSession() (*models.Session, error) {
+	m.session.Title = m.form.GetString("sessionTitle")
+
+	session, err := m.store.Storer.Create(m.session)
+	if err != nil {
+		return nil, err
+	}
+
+	return session, err
+}
+
+func (m *SessionModel) showErrorOnStatusBar(err error) {
+	m.statusBar.SetContent(
+		stateFormats[ErrorState][0],
+		fmt.Sprintf(stateFormats[ErrorState][1], err),
+		stateFormats[ErrorState][2],
+	)
+}
+
+func (m *SessionModel) updateTableContent(session *models.Session) {
+	rows := make([]btTable.Row, 0)
+
+	for _, exam := range session.Exams {
+		rows = append(rows, btTable.Row{
+			exam.Participant.ID,
+			exam.Participant.Token,
+			exam.Participant.Lastname,
+			exam.Participant.Firstname,
+			exam.Participant.Attributes.Get("class"),
+		})
+
+	}
+
+	m.table.SetRows(rows)
+}
+
+func (m *SessionModel) updateViewportContent(session *models.Session) {
+	if len(m.table.Rows()) == 0 {
+		panic(errors.New("Session have not exams"))
+	}
+
+	currentUUID := m.table.SelectedRow()[0]
+	currentExam := session.Exams[currentUUID]
+
+	if currentExam == nil {
+		panic("Current token is not associate to any exam!")
+	}
+
+	// md, err := currentExam.ToMarkdown()
+	// if err != nil {
+	// 	m.showErrorOnStatusBar(err)
+	// }
+
+	// data, err := currentExam.Marshal()
+	// if err != nil {
+	// 	panic(err)
+	// }
+
+	// result, err := m.mdRenderer.Render(md)
+	// if err != nil {
+	// 	m.showErrorOnStatusBar(err)
+	// }
+
+	//	m.viewport.SetContent(result)
+	// m.viewport.SetContent(string(data))
+	m.viewport.SetContent(mockSession)
+}
+
+func (m *SessionModel) createMDRenderer() *glamour.TermRenderer {
+	renderer, err := glamour.NewTermRenderer(
+		glamour.WithStandardStyle("dracula"),
+		glamour.WithWordWrap(m.viewport.GetWidth()),
+	)
+	if err != nil {
+		panic(err)
+	}
+	return renderer
+}
+
+func (m *SessionModel) handleWindowSize(msg tea.WindowSizeMsg) {
+	m.group.SetSize(msg.Width, msg.Height)
+	m.document.SetSize(msg.Width, msg.Height)
+	m.mdRenderer = m.createMDRenderer()
+}
+
+func (m *SessionModel) handleError(msg tea.Msg) {
+	err := msg.(errorMsg)
+
+	m.statusBar.SetContent(
+		stateFormats[ErrorState][0],
+		fmt.Sprintf(stateFormats[ErrorState][1], err.error),
+		stateFormats[ErrorState][2],
+	)
+}
+
+func (m *SessionModel) handleScriptExecuted(msg tea.Msg) {
+	session := new(models.Session)
+	jsonData := []byte(msg.(scriptExecutedMsg).result)
+
+	err := json.Unmarshal(jsonData, &session)
+	if err != nil {
+		panic(err)
+	}
+
+	m.session = session
+
+	m.updateTableContent(session)
+	m.updateViewportContent(session)
+
+	m.state = BrowseState
+}
+
+func (m *SessionModel) handleStoreLoaded(msg tea.Msg) tea.Cmd {
+	storeMsg := msg.(storeLoadedMsg)
+
+	m.store = storeMsg.store
+	m.lenStore = len(m.store.ReadAll())
+
+	return m.executeScript()
+
+}
+
+func (m *SessionModel) handleState(msg tea.Msg, cmds []tea.Cmd) []tea.Cmd {
+	_, cmd := m.group.Update(msg)
+
+	if m.state == LoadingStoreState {
+		return m.updateSpinner(msg, cmd, cmds)
+	}
+
+	if m.form.State == huh.StateCompleted {
+		var err error
+
+		m.Result, err = m.marshalJSON()
+		if err != nil {
+			panic(err)
+		}
+
+		cmds = append(cmds, tea.Quit)
+	}
+
+	if len(m.form.Errors()) > 0 {
+		m.state = ErrorState
+		for _, err := range m.form.Errors() {
+			m.showErrorOnStatusBar(err)
+		}
+	} else {
+		m.state = BrowseState
+	}
+
+	if m.state == BrowseState {
+		m.updateViewportContent(m.session)
+	}
+
+	if m.state != ErrorState {
+		m.statusBar.SetContent(
+			stateFormats[BrowseState][0],
+			fmt.Sprintf(stateFormats[BrowseState][1], m.lenStore, len(m.session.Exams)),
+			stateFormats[BrowseState][2],
+		)
+	}
+
+	cmds = append(cmds, cmd)
+
+	return cmds
+}
+
+func (m *SessionModel) updateSpinner(msg tea.Msg, cmd tea.Cmd, cmds []tea.Cmd) []tea.Cmd {
+	m.spinner, cmd = m.spinner.Update(msg)
+
+	m.statusBar.SetContent(fmt.Sprintf(stateFormats[m.state][0], m.spinner.View()), stateFormats[m.state][1], stateFormats[m.state][2])
+
+	cmds = append(cmds, cmd)
+
+	return cmds
+}
+
+func (m *SessionModel) loadStore() tea.Cmd {
+	return func() tea.Msg {
+		sStore, err := file.NewDefaultSessionFileStore()
+		if err != nil {
+			panic(err)
+		}
+
+		return storeLoadedMsg{sStore}
+	}
+}

cmd/session/state.go

@@ -0,0 +1,7 @@
+package session
+
+const (
+	LoadingStoreState = iota
+	BrowseState
+	ErrorState
+)

cmd/update.go

@@ -0,0 +1,29 @@
+/*
+Copyright © 2024 NAME HERE <EMAIL ADDRESS>
+*/
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+// updateCmd represents the update command
+var updateCmd = &cobra.Command{
+	Use:   "update",
+	Short: "Create or update an entity",
+	Long: `A longer description that spans multiple lines and likely contains examples
+and usage of using your command. For example:
+
+Cobra is a CLI library for Go that empowers applications.
+This application is a tool to generate the needed files
+to quickly create a Cobra application.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Println("update called")
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(updateCmd)
+}

cmd/util/util.go

@@ -0,0 +1,74 @@
+package util
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"html/template"
+	"io"
+	"os"
+	"strings"
+
+	"git.andreafazzi.eu/andrea/probo/embed"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/glamour"
+)
+
+func RenderMarkdownTemplates(paths ...string) string {
+	tmpl, err := template.ParseFS(embed.CLI, paths...)
+	if err != nil {
+		panic(err)
+	}
+
+	var buf bytes.Buffer
+
+	err = tmpl.Execute(&buf, nil)
+	if err != nil {
+		panic(err)
+	}
+
+	result, err := glamour.Render(buf.String(), "dark")
+	if err != nil {
+		panic(err)
+	}
+
+	return result
+}
+
+func LogToFile() *os.File {
+	if len(os.Getenv("DEBUG")) > 0 {
+		f, err := tea.LogToFile("probo-debug.log", "[DEBUG]")
+		if err != nil {
+			fmt.Println("fatal:", err)
+			os.Exit(1)
+		}
+		return f
+	}
+	return nil
+}
+
+func ReadStdin() string {
+	var b strings.Builder
+
+	stat, err := os.Stdin.Stat()
+	if err != nil {
+		panic(err)
+	}
+
+	if stat.Mode()&os.ModeNamedPipe != 0 || stat.Size() != 0 {
+		reader := bufio.NewReader(os.Stdin)
+		for {
+			r, _, err := reader.ReadRune()
+			if err != nil && err == io.EOF {
+				break
+			}
+			_, err = b.WriteRune(r)
+			if err != nil {
+				fmt.Println("Error getting input:", err)
+				os.Exit(1)
+			}
+		}
+	}
+
+	return strings.TrimSpace(b.String())
+}

embed/cli/filter/description.tmpl

@@ -0,0 +1,33 @@
+{{define "description"}}
+# Filters
+
+**Filters can be used to make selections among stores.**
+
+Filters allow you to narrow down selections across various stores. By
+using filters, you can select participants, quizzes, and
+responses. The command triggers a Text User Interface (TUI) that runs
+a `jq` filter, displaying the outcome in real-time. After you're content
+with the filtered JSON, pressing ⏎ will present the result on
+stdout, enabling you to further process it by piping it forward.
+
+## Examples
+
+1. Apply a filter to participants:
+
+```
+probo filter participants
+```
+
+2. Apply a filter to quizzes using the `jq` filter in `tags.jq` file:
+
+```
+probo filter quizzes -i data/filters/tags.jq
+```
+
+3. Apply a filter to participants, then pass the output through
+another filter. The final result is saved in a JSON file:
+
+```
+probo filter participants | probo filter quizzes > data/json/selection.json
+```
+{{end}}

embed/cli/init/description.tmpl

@@ -0,0 +1,27 @@
+{{define "description"}}
+# Init
+
+**Init initializes the current working directory.**
+
+The `init` command creates, within the current directory, a file and
+folder structure prepared for immediate use of `probo`. The filesystem
+structure is as follows:
+```
+
+├── filters
+├── json
+├── participants
+├── quizzes
+├── responses
+├── sessions
+└── templates
+```
+
+## Examples
+
+1. Initialize the current directory:
+
+```
+probo init
+```
+{{end}}

embed/cli/layout.tmpl

@@ -0,0 +1,2 @@
+{{template "logo" .}}
+{{template "description" .}}

embed/cli/logo.tmpl

@@ -0,0 +1,10 @@
+{{define "logo"}}
+```
+ ____            _               
+|  _ \ _ __ ___ | |__   ___      
+| |_) | '__/ _ \| '_ \ / _ \     
+|  __/| | | (_) | |_) | (_) |    
+|_|   |_|  \___/|_.__/ \___/____ 
+                          |_____|
+```
+{{end}}

embed/cli/rank/description.tmpl

@@ -0,0 +1,21 @@
+{{define "description"}}
+# Rank
+
+**The `rank` command generates a ranking of results based on participant answers.**
+
+With the `rank` command, it is possible to generate a ranking of
+results based on the answers provided by participants. The command
+accepts on standard input either a JSON ready for display or the
+result of a filter applied to the answers that needs to be processed
+through a `tengo` script to conform to the JSON schema.
+
+## Example
+
+Filtra le risposte date dai partecipanti al test "Math Test" e produce
+una classifica dei punteggi assegnando +1 punto per ogni risposta
+esatta fornita.
+
+```
+probo filter responses -i data/filters/math_test.jq | probo rank -s data/scripts/score.tengo
+```
+{{end}}

embed/cli/root/description.tmpl

@@ -0,0 +1,50 @@
+{{define "description"}}
+# Probo
+
+`probo` is a quiz management system designed for command line
+enthusiasts. `probo` aims to highlight themes such as privacy,
+interoperability, accessibility, decentralization, and quick usage
+speed.
+
+`probo` organizes information in plain text files and folders so that
+data can be easily revised through version control systems.
+
+`probo` contains a built-in web server that allows quizzes to be
+administered to participants and their answers received.
+
+`probo` is a self-contained application that can be distributed through
+a simple executable containing all necessary assets for its operation.
+
+# Quickstart
+
+1. Initialize the working directory. The command will build a scaffold
+containing example participants, quizzes, and filters
+
+```
+probo init
+```
+
+2. Filter participants and quizzes and create an exam
+session.
+
+```
+probo filter participant -i data/filters/9th_grade.jq \
+| probo filter quizzes -i data/filters/difficult_easy.jq \
+| probo create session --name="My First Session" > data/sessions/my_session.json
+```
+
+3. Run the web server to allow participants to respond.
+
+```
+probo serve
+```
+
+4. Share the *qrcode* generated from the previous step with the
+participants and wait for them to finish responding.
+
+5. Explore the results.
+
+```
+probo filter responses -f '.' | probo rank
+```
+{{end}}

embed/embed.go

@@ -0,0 +1,71 @@
+package embed
+
+import (
+	"embed"
+	"io"
+	"io/fs"
+	"os"
+	"path/filepath"
+
+	"github.com/charmbracelet/log"
+)
+
+var (
+	//go:embed cli/*
+	CLI embed.FS
+
+	//go:embed templates/*
+	Templates embed.FS
+
+	//go:embed public/*
+	Public embed.FS
+
+	//go:embed data/*
+	Data embed.FS
+)
+
+func CopyToWorkingDirectory(data embed.FS) error {
+	currentDir, err := os.Getwd()
+	if err != nil {
+		return err
+	}
+
+	if err := fs.WalkDir(data, ".", func(path string, info fs.DirEntry, err error) error {
+		if err != nil {
+			log.Info(err)
+			return err
+		}
+		fullDstPath := filepath.Join(currentDir, path)
+
+		if info.IsDir() {
+			log.Info("Creating folder", "path", path)
+			if err := os.MkdirAll(fullDstPath, 0755); err != nil {
+				return err
+			}
+		} else {
+			srcFile, err := data.Open(path)
+			if err != nil {
+				return err
+			}
+			defer srcFile.Close()
+
+			dstFile, err := os.Create(fullDstPath)
+			if err != nil {
+				return err
+			}
+			defer dstFile.Close()
+
+			log.Info("Copying file", "path", path)
+			_, err = io.Copy(dstFile, srcFile)
+			if err != nil {
+				return err
+			}
+		}
+
+		return nil
+	}); err != nil {
+		return err
+	}
+
+	return nil
+}

embed/public/css/login.css

@@ -0,0 +1,40 @@
+.container {
+    display: grid;
+    width: 300px;
+    margin: 0 auto;
+    padding: 20px;
+    justify-content: center;
+    align-items: center;
+    height: 100vh;
+    background-color: #f0f0f0;
+    border-radius: 8px;
+    box-shadow: 0 0 10px rgba(0,0,0,0.1);
+}
+
+.container label {
+    display: block;
+    margin-bottom: 5px;
+}
+
+.container input[type="text"],
+.container input[type="password"] {
+    width: 100%;
+    padding: 10px;
+    margin-bottom: 20px;
+    border: 1px solid #ccc;
+    border-radius: 4px;
+}
+
+.container button {
+    width: 100%;
+    padding: 10px;
+    background-color: #007bff;
+    color: white;
+    border: none;
+    border-radius: 4px;
+    cursor: pointer;
+}
+
+.container button:hover {
+    background-color: #0056b3;
+}

embed/templates/exam/exam.html.tmpl

@@ -0,0 +1,23 @@
+{{ define "content" }}
+<div class="container">
+  {{range $quiz := .Quizzes }}
+  <div class="row">
+    <div class="col">
+      <div class="card my-2">
+	<div class="card-body">
+	  <h5 class="card-title">{{$quiz.Question}}</h5>
+	  <h6 class="card-subtitle mb-2 text-body-secondary">Una sola scelta possibile</h6>
+	  {{range $answer := $quiz.Answers}}           
+	  <input type="radio"                                    
+		 id="{{$quiz.ID}}_{{$answer.ID}}" name="{{$quiz.ID}}"        
+		 value="{{$answer.ID}}">                                                      
+	  <label                                                 
+	    for="{{$quiz.ID}}_{{$answer.ID}}">{{$answer.Text}}</label><br>    
+	  {{end}}                                                    
+	</div>
+      </div>
+    </div>
+  </div>
+  {{ end }}
+</div>
+{{ end }}

embed/templates/exam/layout-exam.html.tmpl

@@ -0,0 +1,37 @@
+<!doctype html>
+<html lang="en" data-bs-theme="dark">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title>Test di {{.Participant}}</title>
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-QWTKZyjpPEjISv5WaRU9OFeRpok6YctnYmDr5pNlyT2bRjXh0JMhjY6hW+ALEwIH" crossorigin="anonymous">
+  </head>
+  <body>
+
+    <nav class="navbar bg-body-tertiary">
+      <div class="container">
+	<a class="navbar-brand" href="#">
+	  <svg xmlns="http://www.w3.org/2000/svg" width="30" height="24" fill="currentColor" class="bi bi-book d-inline-block align-text-top" viewBox="0 0 16 16">
+	    <path d="M1 2.828c.885-.37 2.154-.769 3.388-.893 1.33-.134 2.458.063 3.112.752v9.746c-.935-.53-2.12-.603-3.213-.493-1.18.12-2.37.461-3.287.811zm7.5-.141c.654-.689 1.782-.886 3.112-.752 1.234.124 2.503.523 3.388.893v9.923c-.918-.35-2.107-.692-3.287-.81-1.094-.111-2.278-.039-3.213.492zM8 1.783C7.015.936 5.587.81 4.287.94c-1.514.153-3.042.672-3.994 1.105A.5.5 0 0 0 0 2.5v11a.5.5 0 0 0 .707.455c.882-.4 2.303-.881 3.68-1.02 1.409-.142 2.59.087 3.223.877a.5.5 0 0 0 .78 0c.633-.79 1.814-1.019 3.222-.877 1.378.139 2.8.62 3.681 1.02A.5.5 0 0 0 16 13.5v-11a.5.5 0 0 0-.293-.455c-.952-.433-2.48-.952-3.994-1.105C10.413.809 8.985.936 8 1.783"/>
+	  </svg>
+	  Probo_
+	</a>
+	
+	 <span class="navbar-text">
+	   {{.Session.Title}}
+	 </span>
+
+	<div class="text-end">
+          <input type="submit" value="Salva" class="btn btn-primary me-2" form="submit-exam-form"/>
+	</div>
+
+      </div>
+    </nav>
+    
+    <form action="/sessions/{{.Session.ID}}/exams/{{.Participant.ID}}" method="POST" id="submit-exam-form"/>
+    
+    {{template "content" .}}
+    
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-YvpcrYf0tY3lHB60NNkmXc5s9fDVZLESaAA55NDzOxhy9GkcIdslK1eN7N6jIeHz" crossorigin="anonymous"></script>
+  </body>
+</html>

embed/templates/login/layout-login.html.tmpl

@@ -0,0 +1,29 @@
+<!doctype html>
+<html lang="en" data-bs-theme="dark">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title>Probo login</title>
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-QWTKZyjpPEjISv5WaRU9OFeRpok6YctnYmDr5pNlyT2bRjXh0JMhjY6hW+ALEwIH" crossorigin="anonymous">
+  </head>
+  <body>
+    {{template "content" .}}
+
+    <footer class="d-flex flex-wrap justify-content-between align-items-center py-3 my-4 border-top fixed-bottom">
+      <div class="col-md-4 d-flex align-items-center">
+	<a href="/" class="mb-3 me-2 mb-md-0 text-body-secondary text-decoration-none lh-1">
+          <svg class="bi" width="30" height="24"><use xlink:href="#bootstrap"></use></svg>
+	</a>
+	<span class="mb-3 mb-md-0 text-body-secondary">© 2024 Andrea Fazzi</span>
+      </div>
+
+      <ul class="nav col-md-4 justify-content-end list-unstyled d-flex">
+	<li class="ms-3"><a class="text-body-secondary" href="#"><svg class="bi" width="24" height="24"><use xlink:href="#twitter"></use></svg></a></li>
+	<li class="ms-3"><a class="text-body-secondary" href="#"><svg class="bi" width="24" height="24"><use xlink:href="#instagram"></use></svg></a></li>
+	<li class="ms-3"><a class="text-body-secondary" href="#"><svg class="bi" width="24" height="24"><use xlink:href="#facebook"></use></svg></a></li>
+      </ul>
+    </footer>
+    
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-YvpcrYf0tY3lHB60NNkmXc5s9fDVZLESaAA55NDzOxhy9GkcIdslK1eN7N6jIeHz" crossorigin="anonymous"></script>
+  </body>
+</html>

embed/templates/login/login.html.tmpl

@@ -0,0 +1,25 @@
+{{ define "content" }}
+<div class="container col-xl-10 col-xxl-8 px-4 py-5">
+  <div class="row align-items-center g-lg-5 py-5">
+    <div class="col-lg-7 text-center text-lg-start">
+      <h1 class="display-4 fw-bold lh-1 text-body-emphasis mb-3">🎓 Probo_</h1>
+      <p class="col-lg-10 fs-4">
+	Una piattaforma per la creazione, la gestione e la
+	somministrazione di test <em>the hacker way</em>. Inserisci il
+	tuo <strong>token</strong> personale per iniziare.
+      </p>
+    </div>
+    <div class="col-md-10 mx-auto col-lg-5">
+      <form method="post" action="/login" class="p-4 p-md-5 border rounded-3 bg-body-tertiary">
+        <div class="form-floating mb-3">
+          <input type="password" class="form-control" name="participantToken" id="participantToken" placeholder="Token">
+          <label for="participantToken">Inserisci il token...</label>
+        </div>
+        <button class="w-100 btn btn-lg btn-primary" type="submit">Inizia</button>
+        <hr class="my-4">
+        <small class="text-body-secondary">Fai un bel respiro e non aver paura: non è un test su di te ma su quello che sai!</small>
+      </form>
+    </div>
+  </div>
+</div>
+{{ end }}

embed/templates/sessions/layout-sessions.html.tmpl

@@ -0,0 +1,55 @@
+<!doctype html>
+<html lang="en" data-bs-theme="dark">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title>Probo login</title>
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-QWTKZyjpPEjISv5WaRU9OFeRpok6YctnYmDr5pNlyT2bRjXh0JMhjY6hW+ALEwIH" crossorigin="anonymous">
+  </head>
+  <body>
+
+    <header class="mb-4 p-3 text-bg-dark border-bottom">
+      <div class="container">
+	
+	<div class="d-flex flex-wrap align-items-center justify-content-center justify-content-lg-start">
+          <a href="/" class="d-flex align-items-center mb-2 mb-lg-0 text-white text-decoration-none">
+	    <span class="fs-4 mx-2">Probo_</span>
+          </a>
+
+          <ul class="nav col-12 col-lg-auto me-lg-auto mb-2 justify-content-center mb-md-0">
+            <li><a href="#" class="nav-link px-2 text-secondary">I tuoi test</a></li>
+          </ul>
+
+          <form class="col-12 col-lg-auto mb-3 mb-lg-0 me-lg-3" role="search">
+            <input type="search" class="form-control form-control-dark text-bg-dark" placeholder="Cerca..." aria-label="Search">
+          </form>
+
+          <div class="text-end">
+            <button type="button" class="btn btn-outline-light me-2">Cerca...</button>
+            <button type="button" class="btn btn-warning">Esci</button>
+          </div>
+	</div>
+
+      </div>
+    </header>
+    
+    {{template "content" .}}
+
+    <footer class="d-flex flex-wrap justify-content-between align-items-center py-3 my-4 border-top">
+      <div class="col-md-4 d-flex align-items-center">
+	<a href="/" class="mb-3 me-2 mb-md-0 text-body-secondary text-decoration-none lh-1">
+          <svg class="bi" width="30" height="24"><use xlink:href="#bootstrap"></use></svg>
+	</a>
+	<span class="mb-3 mb-md-0 text-body-secondary">© 2024 Andrea Fazzi</span>
+      </div>
+
+      <ul class="nav col-md-4 justify-content-end list-unstyled d-flex">
+	<li class="ms-3"><a class="text-body-secondary" href="#"><svg class="bi" width="24" height="24"><use xlink:href="#twitter"></use></svg></a></li>
+	<li class="ms-3"><a class="text-body-secondary" href="#"><svg class="bi" width="24" height="24"><use xlink:href="#instagram"></use></svg></a></li>
+	<li class="ms-3"><a class="text-body-secondary" href="#"><svg class="bi" width="24" height="24"><use xlink:href="#facebook"></use></svg></a></li>
+      </ul>
+    </footer>
+    
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-YvpcrYf0tY3lHB60NNkmXc5s9fDVZLESaAA55NDzOxhy9GkcIdslK1eN7N6jIeHz" crossorigin="anonymous"></script>
+  </body>
+</html>

embed/templates/sessions/sessions.html.tmpl

@@ -0,0 +1,18 @@
+{{ define "content" }}
+<div class="container">
+  {{range $session := . }}
+  <div class="row">
+    <div class="col">
+      <div class="card my-2">
+	<div class="card-body">
+	  <h5 class="card-title">{{$session.Title}}</h5>
+	  <h6 class="card-subtitle mb-2 text-body-secondary">{{$session.CreatedAt}}</h6>
+	  <p class="card-text">{{$session.Description}}</p>
+	  <a href="/sessions/{{$session.ID}}/exams/{{$session.ParticipantID}}" class="btn btn-primary">Inizia!</a>
+	</div>
+      </div>
+    </div>
+  </div>
+  {{ end }}
+</div>
+{{ end }}

go.mod

@@ -1,31 +1,77 @@
 module git.andreafazzi.eu/andrea/probo
 
-go 1.21
+go 1.22.2
 
 require (
-	github.com/google/uuid v1.3.1
-	github.com/julienschmidt/httprouter v1.3.0
-	github.com/sirupsen/logrus v1.8.1
+	github.com/alecthomas/chroma v0.10.0
+	github.com/charmbracelet/bubbles v0.18.1-0.20240309002305-b9e62cbfe181
+	github.com/charmbracelet/bubbletea v0.25.0
+	github.com/charmbracelet/glamour v0.6.0
+	github.com/charmbracelet/huh v0.3.0
+	github.com/charmbracelet/lipgloss v0.10.0
+	github.com/charmbracelet/log v0.4.0
+	github.com/charmbracelet/x/ansi v0.1.2
+	github.com/d5/tengo/v2 v2.17.0
+	github.com/gocarina/gocsv v0.0.0-20231116093920-b87c2d0e983a
+	github.com/golang-jwt/jwt v3.2.2+incompatible
+	github.com/google/uuid v1.6.0
+	github.com/itchyny/gojq v0.12.14
+	github.com/lmittmann/tint v1.0.4
+	github.com/muesli/termenv v0.15.2
+	github.com/remogatto/prettytest v0.0.0-20200211072524-6d385e11dcb8
+	github.com/remogatto/sugarfoam v0.0.0-20240418083243-766dd70853af
+	github.com/spf13/cobra v1.8.0
+	github.com/spf13/viper v1.18.2
 	gopkg.in/yaml.v2 v2.4.0
-	gorm.io/gorm v1.25.5
 )
 
 require (
-	github.com/dustin/go-humanize v1.0.1 // indirect
-	github.com/glebarez/go-sqlite v1.21.2 // indirect
-	github.com/glebarez/sqlite v1.9.0 // indirect
-	github.com/go-yaml/yaml v2.1.0+incompatible // indirect
-	github.com/jinzhu/inflection v1.0.0 // indirect
-	github.com/jinzhu/now v1.1.5 // indirect
-	github.com/kr/pretty v0.2.1 // indirect
-	github.com/kr/text v0.1.0 // indirect
+	github.com/atotto/clipboard v0.1.4 // indirect
+	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
+	github.com/aymerick/douceur v0.2.0 // indirect
+	github.com/catppuccin/go v0.2.0 // indirect
+	github.com/containerd/console v1.0.4 // indirect
+	github.com/dlclark/regexp2 v1.4.0 // indirect
+	github.com/fsnotify/fsnotify v1.7.0 // indirect
+	github.com/go-logfmt/logfmt v0.6.0 // indirect
+	github.com/gorilla/css v1.0.0 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/itchyny/timefmt-go v0.1.5 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
+	github.com/magiconair/properties v1.8.7 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/remogatto/prettytest v0.0.0-20200211072524-6d385e11dcb8 // indirect
-	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
-	golang.org/x/sys v0.13.0 // indirect
-	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
-	modernc.org/libc v1.24.1 // indirect
-	modernc.org/mathutil v1.6.0 // indirect
-	modernc.org/memory v1.7.2 // indirect
-	modernc.org/sqlite v1.26.0 // indirect
+	github.com/mattn/go-localereader v0.0.1 // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
+	github.com/microcosm-cc/bluemonday v1.0.26 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect
+	github.com/muesli/cancelreader v0.2.2 // indirect
+	github.com/muesli/reflow v0.3.0 // indirect
+	github.com/olekukonko/tablewriter v0.0.5 // indirect
+	github.com/pelletier/go-toml/v2 v2.1.0 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/rogpeppe/go-internal v1.9.0 // indirect
+	github.com/sagikazarmark/locafero v0.4.0 // indirect
+	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
+	github.com/sourcegraph/conc v0.3.0 // indirect
+	github.com/spf13/afero v1.11.0 // indirect
+	github.com/spf13/cast v1.6.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
+	github.com/yuin/goldmark v1.5.2 // indirect
+	github.com/yuin/goldmark-emoji v1.0.1 // indirect
+	go.uber.org/atomic v1.9.0 // indirect
+	go.uber.org/multierr v1.9.0 // indirect
+	golang.org/x/exp v0.0.0-20240112132812-db7319d0e0e3 // indirect
+	golang.org/x/net v0.19.0 // indirect
+	golang.org/x/sync v0.6.0 // indirect
+	golang.org/x/sys v0.18.0 // indirect
+	golang.org/x/term v0.18.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,53 +1,187 @@
+github.com/MakeNowJust/heredoc v1.0.0 h1:cXCdzVdstXyiTqTvfqk9SDHpKNjxuom+DOlyEeQ4pzQ=
+github.com/MakeNowJust/heredoc v1.0.0/go.mod h1:mG5amYoWBHf8vpLOuehzbGGw0EHxpZZ6lCpQ4fNJ8LE=
+github.com/acarl005/stripansi v0.0.0-20180116102854-5a71ef0e047d h1:licZJFw2RwpHMqeKTCYkitsPqHNxTmd4SNR5r94FGM8=
+github.com/acarl005/stripansi v0.0.0-20180116102854-5a71ef0e047d/go.mod h1:asat636LX7Bqt5lYEZ27JNDcqxfjdBQuJ/MM4CN/Lzo=
+github.com/alecthomas/chroma v0.10.0 h1:7XDcGkCQopCNKjZHfYrNLraA+M7e0fMiJ/Mfikbfjek=
+github.com/alecthomas/chroma v0.10.0/go.mod h1:jtJATyUxlIORhUOFNA9NZDWGAQ8wpxQQqNSB4rjA/1s=
+github.com/atotto/clipboard v0.1.4 h1:EH0zSVneZPSuFR11BlR9YppQTVDbh5+16AmcJi4g1z4=
+github.com/atotto/clipboard v0.1.4/go.mod h1:ZY9tmq7sm5xIbd9bOK4onWV4S6X0u6GY7Vn0Yu86PYI=
+github.com/aymanbagabas/go-osc52 v1.0.3/go.mod h1:zT8H+Rk4VSabYN90pWyugflM3ZhpTZNC7cASDfUCdT4=
+github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=
+github.com/aymanbagabas/go-osc52/v2 v2.0.1/go.mod h1:uYgXzlJ7ZpABp8OJ+exZzJJhRNQ2ASbcXHWsFqH8hp8=
+github.com/aymerick/douceur v0.2.0 h1:Mv+mAeH1Q+n9Fr+oyamOlAkUNPWPlA8PPGR0QAaYuPk=
+github.com/aymerick/douceur v0.2.0/go.mod h1:wlT5vV2O3h55X9m7iVYN0TBM0NH/MmbLnd30/FjWUq4=
+github.com/catppuccin/go v0.2.0 h1:ktBeIrIP42b/8FGiScP9sgrWOss3lw0Z5SktRoithGA=
+github.com/catppuccin/go v0.2.0/go.mod h1:8IHJuMGaUUjQM82qBrGNBv7LFq6JI3NnQCF6MOlZjpc=
+github.com/charmbracelet/bubbles v0.18.1-0.20240309002305-b9e62cbfe181 h1:ntdtXC9+kcgQYvqa6nyLZLniCEUOhWQknLlz38JpDpM=
+github.com/charmbracelet/bubbles v0.18.1-0.20240309002305-b9e62cbfe181/go.mod h1:Zlzkn8WOd6QS7RC1BXAY1iw1VLq+xT70UZ1vkEtnrvo=
+github.com/charmbracelet/bubbletea v0.25.0 h1:bAfwk7jRz7FKFl9RzlIULPkStffg5k6pNt5dywy4TcM=
+github.com/charmbracelet/bubbletea v0.25.0/go.mod h1:EN3QDR1T5ZdWmdfDzYcqOCAps45+QIJbLOBxmVNWNNg=
+github.com/charmbracelet/glamour v0.6.0 h1:wi8fse3Y7nfcabbbDuwolqTqMQPMnVPeZhDM273bISc=
+github.com/charmbracelet/glamour v0.6.0/go.mod h1:taqWV4swIMMbWALc0m7AfE9JkPSU8om2538k9ITBxOc=
+github.com/charmbracelet/huh v0.3.0 h1:CxPplWkgW2yUTDDG0Z4S5HH8SJOosWHd4LxCvi0XsKE=
+github.com/charmbracelet/huh v0.3.0/go.mod h1:fujUdKX8tC45CCSaRQdw789O6uaCRwx8l2NDyKfC4jA=
+github.com/charmbracelet/lipgloss v0.10.0 h1:KWeXFSexGcfahHX+54URiZGkBFazf70JNMtwg/AFW3s=
+github.com/charmbracelet/lipgloss v0.10.0/go.mod h1:Wig9DSfvANsxqkRsqj6x87irdy123SR4dOXlKa91ciE=
+github.com/charmbracelet/log v0.4.0 h1:G9bQAcx8rWA2T3pWvx7YtPTPwgqpk7D68BX21IRW8ZM=
+github.com/charmbracelet/log v0.4.0/go.mod h1:63bXt/djrizTec0l11H20t8FDSvA4CRZJ1KH22MdptM=
+github.com/charmbracelet/x/ansi v0.1.2 h1:6+LR39uG8DE6zAmbu023YlqjJHkYXDF1z36ZwzO4xZY=
+github.com/charmbracelet/x/ansi v0.1.2/go.mod h1:dk73KoMTT5AX5BsX0KrqhsTqAnhZZoCBjs7dGWp4Ktw=
+github.com/containerd/console v1.0.4 h1:F2g4+oChYvBTsASRTz8NP6iIAi97J3TtSAsLbIFn4ro=
+github.com/containerd/console v1.0.4/go.mod h1:YynlIjWYF8myEu6sdkwKIvGQq+cOckRm6So2avqoYAk=
+github.com/cpuguy83/go-md2man/v2 v2.0.3/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/d5/tengo/v2 v2.17.0 h1:BWUN9NoJzw48jZKiYDXDIF3QrIVZRm1uV1gTzeZ2lqM=
+github.com/d5/tengo/v2 v2.17.0/go.mod h1:XRGjEs5I9jYIKTxly6HCF8oiiilk5E/RYXOZ5b0DZC8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
-github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
-github.com/glebarez/go-sqlite v1.21.2 h1:3a6LFC4sKahUunAmynQKLZceZCOzUthkRkEAl9gAXWo=
-github.com/glebarez/go-sqlite v1.21.2/go.mod h1:sfxdZyhQjTM2Wry3gVYWaW072Ri1WMdWJi0k6+3382k=
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go.work

@@ -0,0 +1,8 @@
+go 1.22.2
+
+toolchain go1.22.3
+
+use (
+	.
+	../sugarfoam
+)

go.work.sum

@@ -0,0 +1,122 @@
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+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
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+google.golang.org/api v0.153.0/go.mod h1:3qNJX5eOmhiWYc67jRA/3GsDw97UFb5ivv7Y2PrriAY=
+google.golang.org/appengine v1.6.7/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
+google.golang.org/genproto v0.0.0-20231106174013-bbf56f31fb17/go.mod h1:J7XzRzVy1+IPwWHZUzoD0IccYZIrXILAQpc+Qy9CMhY=
+google.golang.org/genproto/googleapis/api v0.0.0-20231106174013-bbf56f31fb17/go.mod h1:0xJLfVdJqpAPl8tDg1ujOCGzx6LFLttXT5NhllGOXY4=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20231120223509-83a465c0220f/go.mod h1:L9KNLi232K1/xB6f7AlSX692koaRnKaWSR0stBki0Yc=
+google.golang.org/grpc v1.59.0/go.mod h1:aUPDwccQo6OTjy7Hct4AfBPD1GptF4fyUjIkQ9YtF98=
+google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=

hasher/hasher.go

@@ -1,26 +0,0 @@
-package hasher
-
-import (
-	"git.andreafazzi.eu/andrea/probo/client"
-)
-
-type HashFunc func(string) string
-
-type Hasher interface {
-	// Hash returns a slice of hashes. The first one is an
-	// hash calculated from the question using
-	// QuestionHash. Following hashes are calculated from the
-	// answers using AnswerHash.
-	QuizHashes(quiz *client.Quiz) []string
-
-	// QuestionHash returns an hash calculated from a field of
-	// Question struct.
-	QuestionHash(question *client.Question) string
-
-	// AnswerHash returns an hash calculated from a field of
-	// Answer struct.
-	AnswerHash(answer *client.Answer) string
-
-	// Calculate calculates a checksum from all the given hashes.
-	Calculate(hashes []string) string
-}

hasher/hasher_test.go

@@ -1,64 +0,0 @@
-package hasher
-
-import (
-	"testing"
-
-	"git.andreafazzi.eu/andrea/probo/client"
-	"github.com/remogatto/prettytest"
-)
-
-type testSuite struct {
-	prettytest.Suite
-}
-
-func TestRunner(t *testing.T) {
-	prettytest.Run(
-		t,
-		new(testSuite),
-	)
-}
-
-func (t *testSuite) TestQuizHashes() {
-	h := NewDefaultHash(DefaultSHA256HashingFn)
-
-	firstQuizRequest := &client.CreateQuizRequest{
-		Question: &client.CreateQuestionRequest{
-			Text: "Question 1"},
-		Answers: []*client.CreateAnswerRequest{
-			{Text: "Answer 2", Correct: false},
-			{Text: "Answer 3", Correct: false},
-			{Text: "Answer 1", Correct: true},
-		},
-	}
-
-	secondQuizRequest := &client.CreateQuizRequest{
-		Question: &client.CreateQuestionRequest{
-			Text: "Question 1"},
-		Answers: []*client.CreateAnswerRequest{
-			{Text: "Answer 1", Correct: false},
-			{Text: "Answer 2", Correct: false},
-			{Text: "Answer 3", Correct: true},
-		},
-	}
-
-	thirdQuizRequest := &client.CreateQuizRequest{
-		Question: &client.CreateQuestionRequest{
-			Text: "Question 2"},
-		Answers: []*client.CreateAnswerRequest{
-			{Text: "Answer 1", Correct: false},
-			{Text: "Answer 2", Correct: false},
-			{Text: "Answer 3", Correct: true},
-		},
-	}
-
-	hashesFromFirstRequest := h.QuizHashes(firstQuizRequest)
-	hashesFromSecondRequest := h.QuizHashes(secondQuizRequest)
-	hashesFromThirdRequest := h.QuizHashes(thirdQuizRequest)
-
-	t.Equal(5, len(hashesFromFirstRequest))
-
-	t.True(hashesFromFirstRequest[1] == hashesFromSecondRequest[2], "Answers' hashes should maintain original request's order")
-	t.True(hashesFromFirstRequest[4] == hashesFromSecondRequest[4], "Quiz hash should be the same because quizzes are duplicated")
-	t.True(hashesFromFirstRequest[1] != hashesFromThirdRequest[1], "Questions' hashes should not be the same because texts are different")
-	t.True(hashesFromFirstRequest[4] != hashesFromThirdRequest[4], "Quiz hash should not be the same because quizzes are not duplicated")
-}

hasher/sha256/sha256.go

@@ -1,54 +0,0 @@
-package sha256
-
-import (
-	"crypto/sha256"
-	"fmt"
-	"sort"
-	"strings"
-
-	"git.andreafazzi.eu/andrea/probo/client"
-	"git.andreafazzi.eu/andrea/probo/hasher"
-)
-
-var DefaultSHA256HashingFn = func(text string) string {
-	return fmt.Sprintf("%x", sha256.Sum256([]byte(text)))
-}
-
-type Default256Hasher struct {
-	hashFn hasher.HashFunc
-}
-
-func NewDefault256Hasher(hashFn hasher.HashFunc) *Default256Hasher {
-	return &Default256Hasher{hashFn}
-}
-
-func (h *Default256Hasher) QuizHashes(quiz *client.Quiz) []string {
-	result := make([]string, 0)
-
-	result = append(result, h.QuestionHash(quiz.Question))
-
-	for _, a := range quiz.Answers {
-		result = append(result, h.AnswerHash(a))
-	}
-
-	result = append(result, h.Calculate(result))
-
-	return result
-}
-
-func (h *Default256Hasher) QuestionHash(question *client.Question) string {
-	return h.hashFn(question.Text)
-}
-
-func (h *Default256Hasher) AnswerHash(answer *client.Answer) string {
-	return h.hashFn(answer.Text)
-}
-
-func (h *Default256Hasher) Calculate(hashes []string) string {
-	orderedHashes := make([]string, len(hashes))
-
-	copy(orderedHashes, hashes)
-	sort.Strings(orderedHashes)
-
-	return h.hashFn(strings.Join(orderedHashes, ""))
-}

logger/logger.go

@@ -1,112 +0,0 @@
-package logger
-
-import (
-	"log"
-	"net/http"
-	"time"
-
-	"github.com/sirupsen/logrus"
-)
-
-const (
-	Disabled = iota
-	InfoLevel
-	WarningLevel
-	DebugLevel
-)
-
-type (
-	// struct for holding response details
-	responseData struct {
-		status int
-		size   int
-	}
-
-	// our http.ResponseWriter implementation
-	loggingResponseWriter struct {
-		http.ResponseWriter // compose original http.ResponseWriter
-		responseData        *responseData
-	}
-)
-
-var loggerLevel int = InfoLevel
-
-func (r *loggingResponseWriter) Write(b []byte) (int, error) {
-	size, err := r.ResponseWriter.Write(b) // write response using original http.ResponseWriter
-	r.responseData.size += size            // capture size
-	return size, err
-}
-
-func (r *loggingResponseWriter) WriteHeader(statusCode int) {
-	r.ResponseWriter.WriteHeader(statusCode) // write status code using original http.ResponseWriter
-	r.responseData.status = statusCode       // capture status code
-}
-
-func WithLogging(h http.Handler) http.Handler {
-	loggingFn := func(rw http.ResponseWriter, req *http.Request) {
-		start := time.Now()
-
-		responseData := &responseData{
-			status: 0,
-			size:   0,
-		}
-		lrw := loggingResponseWriter{
-			ResponseWriter: rw, // compose original http.ResponseWriter
-			responseData:   responseData,
-		}
-		h.ServeHTTP(&lrw, req) // inject our implementation of http.ResponseWriter
-
-		duration := time.Since(start)
-
-		if loggerLevel >= InfoLevel {
-			logrus.WithFields(logrus.Fields{
-				"URI":      req.RequestURI,
-				"Method":   req.Method,
-				"Status":   responseData.status,
-				"Duration": duration,
-				"Size":     responseData.size,
-			}).Info("Completed.")
-		}
-	}
-	return http.HandlerFunc(loggingFn)
-}
-
-func SetLevel(level int) {
-	loggerLevel = level
-}
-
-func Info(v ...interface{}) {
-	if loggerLevel >= InfoLevel {
-		log.Println(v...)
-	}
-}
-
-func Infof(format string, v ...interface{}) {
-	if loggerLevel >= InfoLevel {
-		log.Printf(format, v...)
-	}
-}
-
-func Warning(v ...interface{}) {
-	if loggerLevel >= WarningLevel {
-		log.Println(v...)
-	}
-}
-
-func Warningf(format string, v ...interface{}) {
-	if loggerLevel >= WarningLevel {
-		log.Printf(format, v...)
-	}
-}
-
-func Debug(v ...interface{}) {
-	if loggerLevel >= DebugLevel {
-		log.Println(v...)
-	}
-}
-
-func Debugf(format string, v ...interface{}) {
-	if loggerLevel >= DebugLevel {
-		log.Printf(format, v...)
-	}
-}

main.go

@@ -1,28 +1,30 @@
+/*
+Copyright © 2024 Andrea Fazzi dev@andreafazzi.eu
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
 package main
 
 import (
-	"log"
-	"net/http"
-
-	"git.andreafazzi.eu/andrea/probo/hasher/sha256"
-	"git.andreafazzi.eu/andrea/probo/logger"
-	"git.andreafazzi.eu/andrea/probo/store/memory"
-	"github.com/sirupsen/logrus"
+	"git.andreafazzi.eu/andrea/probo/cmd"
 )
 
-const port = "8080"
-
 func main() {
-	logger.SetLevel(logger.DebugLevel)
-
-	server := NewProboCollectorServer(
-		memory.NewMemoryProboCollectorStore(
-			sha256.NewDefault256Hasher(sha256.DefaultSHA256HashingFn),
-		),
-	)
-
-	addr := "http://localhost:" + port
-	logrus.WithField("address", addr).Info("Probo Collector is up&running...")
-
-	log.Fatal(http.ListenAndServe(":"+port, server))
+	cmd.Execute()
 }

misc/logseq/.gitignore

@@ -1,121 +0,0 @@
-.DS_Store
-# Logs
-logs
-*.log
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-lerna-debug.log*
-.pnpm-debug.log*
-
-# Diagnostic reports (https://nodejs.org/api/report.html)
-report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
-
-# Runtime data
-pids
-*.pid
-*.seed
-*.pid.lock
-
-# Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
-
-# Coverage directory used by tools like istanbul
-coverage
-*.lcov
-
-# nyc test coverage
-.nyc_output
-
-# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
-.grunt
-
-# Bower dependency directory (https://bower.io/)
-bower_components
-
-# node-waf configuration
-.lock-wscript
-
-# Compiled binary addons (https://nodejs.org/api/addons.html)
-build/Release
-
-# Dependency directories
-node_modules/
-jspm_packages/
-
-# Snowpack dependency directory (https://snowpack.dev/)
-web_modules/
-
-# TypeScript cache
-*.tsbuildinfo
-
-# Optional npm cache directory
-.npm
-
-# Optional eslint cache
-.eslintcache
-
-# Microbundle cache
-.rpt2_cache/
-.rts2_cache_cjs/
-.rts2_cache_es/
-.rts2_cache_umd/
-
-# Optional REPL history
-.node_repl_history
-
-# Output of 'npm pack'
-*.tgz
-
-# Yarn Integrity file
-.yarn-integrity
-
-# dotenv environment variables file
-.env
-.env.test
-.env.production
-
-# parcel-bundler cache (https://parceljs.org/)
-.cache
-.parcel-cache
-
-# Next.js build output
-.next
-out
-
-# Nuxt.js build / generate output
-.nuxt
-dist
-
-# Gatsby files
-.cache/
-# Comment in the public line in if your project uses Gatsby and not Next.js
-# https://nextjs.org/blog/next-9-1#public-directory-support
-# public
-
-# vuepress build output
-.vuepress/dist
-
-# Serverless directories
-.serverless/
-
-# FuseBox cache
-.fusebox/
-
-# DynamoDB Local files
-.dynamodb/
-
-# TernJS port file
-.tern-port
-
-# Stores VSCode versions used for testing VSCode extensions
-.vscode-test
-
-# yarn v2
-.yarn/cache
-.yarn/unplugged
-.yarn/build-state.yml
-.yarn/install-state.gz
-.pnp.*
-
-*~

misc/logseq/LICENSE.md

@@ -1,21 +0,0 @@
-Copyright (c) 2022 Andrea Fazzi
-
-MIT License
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.

misc/logseq/README.md

@@ -1,4 +0,0 @@
-# What's that?
-
-A very basic boilerplate useful to start devoloping a
-[Logseq](https://logseq.com/) plugin.

misc/logseq/icon.svg

@@ -1,10 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-hierarchy" width="24" height="24" viewBox="0 0 24 24" stroke-width="2" stroke="gray" fill="gray" stroke-linecap="round" stroke-linejoin="round">
-  <path stroke="none" d="M0 0h24v24H0z" fill="none"/>
-  <circle cx="12" cy="5" r="2" />
-  <circle cx="5" cy="19" r="2" />
-  <circle cx="19" cy="19" r="2" />
-  <path d="M6.5 17.5l5.5 -4.5l5.5 4.5" />
-  <line x1="12" y1="7" x2="12" y2="13" />
-</svg>
-
-

misc/logseq/package.json

@@ -1,29 +0,0 @@
-{
-  "logseq": {
-    "id": "logseq-probo-plugin",
-    "title": "logseq-probo-plugin",
-    "icon": "./icon.svg"
-  },
-  "name": "logseq-probo-plugin",
-  "version": "1.2.0",
-  "description": "",
-  "main": "dist/index.html",
-  "targets": {
-    "main": false
-  },
-  "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1",
-    "build": "parcel build --no-source-maps src/index.html --public-url ./"
-  },
-  "keywords": [],
-  "author": "Andrea Fazzi",
-  "license": "MIT",
-  "dependencies": {
-    "@logseq/libs": "^0.0.1-alpha.35",
-    "js-base64": "^3.7.2"
-  },
-  "devDependencies": {
-    "buffer": "^6.0.3",
-    "parcel": "^2.2.0"
-  }
-}

misc/logseq/src/index.html

@@ -1,13 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-  <head>
-    <meta charset="UTF-8" />
-    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Document</title>
-  </head>
-  <body>
-    <div id="app"></div>
-    <script src="index.ts" type="module"></script>
-  </body>
-</html>

misc/logseq/src/index.ts

@@ -1,121 +0,0 @@
-import "@logseq/libs";
-import { BlockEntity } from "@logseq/libs/dist/LSPlugin.user";
-
-const endpoint = 'http://localhost:3000/quizzes';
-
-const uniqueIdentifier = () =>
-	Math.random()
-		.toString(36)
-		.replace(/[^a-z]+/g, "");
-
-const sanitizeBlockContent = (text: string) => text.replace(/((?<=::).*|.*::)/g, "").replace(/{.*}/, "").trim()
-
-async function fetchQuizzes() {
-	const { status: status, content: quizzes } = await fetch(endpoint).then(res => res.json())
-	const ret = quizzes || []
-
-	return ret.map((quiz, i) => {
-		return `${i + 1}. ${quiz.Question.Text}`
-	})
-}
-
-const render = (id, slot, status: ("modified" | "saved" | "error")) => {
-	logseq.provideUI({
-		key: `${id}`,
-		slot,
-		reset: true,
-		template: `
-${status === 'saved' ? '<button data-on-click="createOrUpdateQuiz" class="renderBtn">Save</button><span>saved</span>' : '<button data-on-click="createOrUpdateQuiz" class="renderBtn">Save</button>'}
-
-`,
-	});
-
-}
-
-const main = () => {
-	console.log("logseq-probo-plugin LOADED!");
-
-	logseq.Editor.registerSlashCommand("Get All Quizzes", async () => {
-		const currBlock = await logseq.Editor.getCurrentBlock();
-
-		let blocks = await fetchQuizzes()
-
-		blocks = blocks.map((it: BlockEntity) => ({ content: it }))
-
-		await logseq.Editor.insertBatchBlock(currBlock.uuid, blocks, {
-			sibling: false
-		})
-	});
-
-	logseq.Editor.registerSlashCommand("Create a new Probo quiz", async () => {
-		await logseq.Editor.insertAtEditingCursor(
-			`{{renderer :probo_${uniqueIdentifier()}}}`
-		);
-
-	});
-
-	logseq.App.onMacroRendererSlotted(async ({ slot, payload }) => {
-		const [type] = payload.arguments;
-
-		if (!type.startsWith(":probo")) return
-
-		const id = type.split("_")[1]?.trim();
-		const proboId = `probo_${id}`;
-
-		let status: ("modified" | "saved" | "error")
-
-		logseq.provideModel({
-			async createOrUpdateQuiz() {
-				const parentBlock = await logseq.Editor.getBlock(payload.uuid, { includeChildren: true });
-				const answers = parentBlock.children.map((answer: BlockEntity, i: number) => {
-				    return { text: answer.content, correct: (i == 0) ? true : false }
-				})
-
-				const quiz = {
-					question: { text: sanitizeBlockContent(parentBlock.content) },
-					answers: answers
-				}
-
-				if (parentBlock.properties.proboQuizUuid) {
-					const res = await fetch(endpoint + `/update/${parentBlock.properties.proboQuizUuid}`, { method: 'PUT', body: JSON.stringify(quiz) })
-					const data = await res.json();
-					await logseq.Editor.upsertBlockProperty(parentBlock.uuid, `probo-quiz-uuid`, data.content.ID)
-					render(proboId, slot, "saved")
-				} else {
-					const res = await fetch(endpoint + '/create', { method: 'POST', body: JSON.stringify(quiz) })
-					const data = await res.json();
-					await logseq.Editor.upsertBlockProperty(parentBlock.uuid, `probo-quiz-uuid`, data.content.ID)
-					render(proboId, slot, "saved")
-				}
-
-			}
-		});
-
-		logseq.provideStyle(`
-.renderBtn {
-border: 1px solid white;
-border-radius: 8px;
-padding: 5px;
-margin-right: 5px;
-font-size: 80%;
-background-color: black;
-color: white;
-}
-
-.renderBtn:hover {
-background-color: white;
-color: black;
-}
-`);
-
-		logseq.provideUI({
-			key: `${proboId}`,
-			slot,
-			reset: true,
-			template: `<button data-on-click="createOrUpdateQuiz" class="renderBtn">Save</button>`,
-		});
-	});
-
-};
-
-logseq.ready(main).catch(console.error);

models/collection.go

@@ -1,30 +0,0 @@
-package models
-
-type Filter struct {
-	Tags []*Tag
-}
-
-type Collection struct {
-	Meta
-
-	Name   string  `json:"name"`
-	Filter *Filter `json:"filter"`
-
-	Quizzes []*Quiz `json:"quizzes" gorm:"many2many:collection_quizzes"`
-}
-
-func (c *Collection) String() string {
-	return c.Name
-}
-
-func (c *Collection) GetID() string {
-	return c.ID
-}
-
-func (c *Collection) SetID(id string) {
-	c.ID = id
-}
-
-func (c *Collection) GetHash() string {
-	return ""
-}

models/exam.go

@@ -1,23 +0,0 @@
-package models
-
-import (
-	"time"
-
-	"gorm.io/gorm"
-)
-
-type Exam struct {
-	ID string `gorm:"primaryKey"`
-
-	CreatedAt time.Time
-	UpdatedAt time.Time
-	DeletedAt gorm.DeletedAt `gorm:"index"`
-
-	Name        string
-	Description string
-
-	Collection  *Collection    `gorm:"foreignKey:ID"`
-	Participant []*Participant `gorm:"many2many:exam_participants"`
-
-	//	Responses []string
-}

models/group.go

@@ -1,6 +0,0 @@
-package models
-
-type Group struct {
-	Name         string
-	Participants []*Participant
-}

models/meta.go

@@ -1,9 +0,0 @@
-package models
-
-import "time"
-
-type Meta struct {
-	ID        string    `json:"id" yaml:"id" gorm:"primaryKey"`
-	CreatedAt time.Time `json:"created_at" yaml:"created_at"`
-	UpdatedAt time.Time `json:"updated_at" yaml:"updated_at"`
-}

models/participant.go

@@ -1,12 +0,0 @@
-package models
-
-type Participant struct {
-	ID string `gorm:"primaryKey"`
-
-	Firstname string
-	Lastname  string
-
-	Token uint
-
-	Attributes map[string]string
-}

models/tag.go

@@ -1,14 +0,0 @@
-package models
-
-import (
-	"time"
-
-	"gorm.io/gorm"
-)
-
-type Tag struct {
-	CreatedAt time.Time
-	UpdatedAt time.Time
-	DeletedAt gorm.DeletedAt `gorm:"index"`
-	Name      string         `json:"name" gorm:"primaryKey"`
-}

pkg/models/answer.go

@@ -6,7 +6,8 @@ import (
 )
 
 type Answer struct {
-	ID   string `json:"id" gorm:"primaryKey"`
+	//	ID   string `json:"id" gorm:"primaryKey"`
+	Meta
 	Text string `json:"text"`
 }
 
@@ -14,14 +15,6 @@ func (a *Answer) String() string {
 	return a.Text
 }
 
-func (a *Answer) GetID() string {
-	return a.ID
-}
-
-func (a *Answer) SetID(id string) {
-	a.ID = id
-}
-
 func (a *Answer) GetHash() string {
 	return fmt.Sprintf("%x", sha256.Sum256([]byte(a.Text)))
 }

pkg/models/collection.go

@@ -0,0 +1,28 @@
+package models
+
+import "encoding/json"
+
+type Collection struct {
+	Meta
+
+	Name string `json:"name"`
+	// Filter *Filter `json:"filter"`
+
+	Quizzes []*Quiz `json:"quizzes" gorm:"many2many:collection_quizzes"`
+}
+
+func (c *Collection) String() string {
+	return c.Name
+}
+
+func (c *Collection) GetHash() string {
+	return ""
+}
+
+func (c *Collection) Marshal() ([]byte, error) {
+	return json.Marshal(c)
+}
+
+func (c *Collection) Unmarshal(data []byte) error {
+	return json.Unmarshal(data, c)
+}

pkg/models/exam.go

@@ -0,0 +1,50 @@
+package models
+
+import (
+	"crypto/sha256"
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+type Exam struct {
+	Meta
+
+	Participant *Participant `json:"participant"`
+	Quizzes     []*Quiz      `json:"quizzes"`
+}
+
+func (e *Exam) String() string {
+	return fmt.Sprintf("%v's exam with %v quizzes.", e.Participant, len(e.Quizzes))
+}
+
+func (e *Exam) GetHash() string {
+	qHashes := ""
+	for _, q := range e.Quizzes {
+		qHashes += q.GetHash()
+	}
+	return fmt.Sprintf("%x", sha256.Sum256([]byte(strings.Join([]string{e.Participant.GetHash(), qHashes}, ""))))
+}
+
+func (e *Exam) Marshal() ([]byte, error) {
+	return json.Marshal(e)
+
+}
+
+func (e *Exam) Unmarshal(data []byte) error {
+	return json.Unmarshal(data, e)
+}
+
+func (e *Exam) ToMarkdown() (string, error) {
+	result := ""
+	for _, quiz := range e.Quizzes {
+		quizMD, err := QuizToMarkdown(quiz)
+		if err != nil {
+			return "", err
+		}
+		result += fmt.Sprintf(quizMD)
+		result += "\n"
+	}
+
+	return strings.TrimRight(fmt.Sprintf("# %s %s \n %s", e.Participant.Lastname, e.Participant.Firstname, result), "\n"), nil
+}

pkg/models/filters.go

@@ -0,0 +1,9 @@
+package models
+
+// type Filter struct {
+// 	Tags []*Tag
+// }
+
+// type ParticipantFilter struct {
+// 	Attributes map[string]string
+// }

pkg/models/group.go

@@ -0,0 +1,27 @@
+package models
+
+import (
+	"github.com/gocarina/gocsv"
+)
+
+type Group struct {
+	Meta
+	Name         string
+	Participants []*Participant
+}
+
+func (g *Group) String() string {
+	return g.Name
+}
+
+func (g *Group) GetHash() string {
+	return ""
+}
+
+func (g *Group) Marshal() ([]byte, error) {
+	return gocsv.MarshalBytes(g.Participants)
+}
+
+func (g *Group) Unmarshal(data []byte) error {
+	return gocsv.UnmarshalBytes(data, &g.Participants)
+}

pkg/models/group_test.go

@@ -0,0 +1,31 @@
+package models
+
+import (
+	"github.com/remogatto/prettytest"
+)
+
+type groupTestSuite struct {
+	prettytest.Suite
+}
+
+func (t *groupTestSuite) TestMarshal() {
+	t.Pending()
+
+	// 	group := &Group{
+	// 		Name: "Example group",
+	// 		Participants: []*Participant{
+	// 			{"123", "John", "Doe", 12345, map[string]string{"class": "1 D LIN", "age": "18"}},
+	// 			{"456", "Jack", "Sparrow", 67890, map[string]string{"class": "1 D LIN", "age": "24"}},
+	// 		},
+	// 	}
+
+	// 	expected := `id,firstname,lastname,token,attributes
+	// 123,John,Doe,12345,"age:18,class:1 D LIN"
+	// 456,Jack,Sparrow,67890,"age:24,class:1 D LIN"
+	// `
+
+	// 	csv, err := group.Marshal()
+
+	// t.Nil(err)
+	// t.Equal(expected, string(csv))
+}

pkg/models/meta.go

@@ -0,0 +1,38 @@
+package models
+
+import "time"
+
+type Meta struct {
+	ID        string    `json:"id" yaml:"id" gorm:"primaryKey"`
+	CreatedAt time.Time `json:"created_at" yaml:"created_at"`
+	UpdatedAt time.Time `json:"updated_at" yaml:"updated_at"`
+
+	UniqueIDFunc func() string `json:"-" yaml:"-"`
+}
+
+func (m *Meta) GetID() string {
+	if m.UniqueIDFunc != nil {
+		return m.UniqueIDFunc()
+	}
+	return m.ID
+}
+
+func (m *Meta) SetID(id string) {
+	m.ID = id
+}
+
+func (m *Meta) SetCreatedAt(t time.Time) {
+	m.CreatedAt = t
+}
+
+func (m *Meta) SetUpdatedAt(t time.Time) {
+	m.UpdatedAt = t
+}
+
+func (m *Meta) GetCreatedAt() time.Time {
+	return m.CreatedAt
+}
+
+func (m *Meta) GetUpdatedAt() time.Time {
+	return m.UpdatedAt
+}

pkg/models/models_test.go

@@ -16,6 +16,7 @@ func TestRunner(t *testing.T) {
 	prettytest.Run(
 		t,
 		new(testSuite),
+		new(groupTestSuite),
 	)
 }
 
@@ -40,13 +41,16 @@ Question text with #tag1 #tag2 (3).
 			{Text: "Answer 4"},
 		},
 		CorrectPos: 0,
+		Tags:       []string{"#tag1", "#tag2"},
 	}
 
-	quiz, _, err := MarkdownToQuiz(markdown)
+	q := new(Quiz)
+
+	err := MarkdownToQuiz(q, markdown)
 	t.Nil(err, fmt.Sprintf("Quiz should be parsed without errors: %v", err))
 
 	if !t.Failed() {
-		t.True(reflect.DeepEqual(quiz, expectedQuiz), fmt.Sprintf("Expected %+v, got %+v", expectedQuiz, quiz))
+		t.True(reflect.DeepEqual(q, expectedQuiz), fmt.Sprintf("Expected %+v got %+v", expectedQuiz, q))
 
 	}
 }
@@ -74,3 +78,7 @@ func (t *testSuite) TestMarkdownFromQuiz() {
 `, md)
 	}
 }
+
+func (t *testSuite) TestParticipantTokenMarshalCSV() {
+
+}

pkg/models/participant.go

@@ -0,0 +1,108 @@
+package models
+
+import (
+	"crypto/sha256"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"sort"
+	"strings"
+)
+
+type AttributeList map[string]string
+
+type Participant struct {
+	Meta
+
+	Firstname string `json:"firstname" csv:"firstname"`
+	Lastname  string `json:"lastname" csv:"lastname"`
+
+	Token string `json:"token" csv:"token"`
+
+	Attributes AttributeList `csv:"attributes"`
+}
+
+func (p *Participant) String() string {
+	return fmt.Sprintf("%s %s", p.Lastname, p.Firstname)
+}
+
+func (p *Participant) GetHash() string {
+	return fmt.Sprintf("%x", sha256.Sum256([]byte(strings.Join(append([]string{p.Lastname, p.Firstname}, p.AttributesToSlice()...), ""))))
+}
+
+func (p *Participant) AttributesToSlice() []string {
+	result := make([]string, 0)
+
+	for k, v := range p.Attributes {
+		result = append(result, k, v)
+	}
+
+	return result
+}
+
+func (p *Participant) Marshal() ([]byte, error) {
+	return json.Marshal(p)
+
+}
+
+func (p *Participant) Unmarshal(data []byte) error {
+	return json.Unmarshal(data, p)
+}
+
+func (al AttributeList) MarshalCSV() (string, error) {
+	result := convertMapToKeyValueOrderedString(al)
+	return result, nil
+}
+
+func (al *AttributeList) UnmarshalCSV(csv string) error {
+	if *al == nil {
+		*al = make(AttributeList)
+	}
+
+	pairs := strings.Split(csv, ",")
+
+	for _, pair := range pairs {
+		attrVal := strings.Split(pair, ":")
+		if len(attrVal) != 2 {
+			return errors.New("Invalid input format for attribute list.")
+		}
+
+		attr := strings.TrimSpace(attrVal[0])
+		val := strings.TrimSpace(attrVal[1])
+
+		(*al)[attr] = val
+	}
+
+	return nil
+}
+
+func (al AttributeList) Get(key string) string {
+	return al[key]
+}
+
+func (al AttributeList) String() string {
+	result := make([]string, 0)
+	for k, v := range al {
+		result = append(result, fmt.Sprintf("%s: %s", k, v))
+	}
+	return strings.Join(result, ",")
+}
+
+func convertMapToKeyValueOrderedString(m map[string]string) string {
+	keys := make([]string, 0, len(m))
+	for key := range m {
+		keys = append(keys, key)
+	}
+
+	sort.Strings(keys)
+
+	var result strings.Builder
+	for _, key := range keys {
+		result.WriteString(key)
+		result.WriteString(":")
+		result.WriteString(m[key])
+		result.WriteString(",")
+	}
+
+	return strings.TrimSuffix(result.String(), ",")
+}

pkg/models/question.go

@@ -14,14 +14,6 @@ func (q *Question) String() string {
 	return q.Text
 }
 
-func (q *Question) GetID() string {
-	return q.ID
-}
-
-func (q *Question) SetID(id string) {
-	q.ID = id
-}
-
 func (q *Question) GetHash() string {
 	return fmt.Sprintf("%x", sha256.Sum256([]byte(q.Text)))
 }

pkg/models/quiz.go

@@ -15,24 +15,25 @@ type Quiz struct {
 	Meta
 
 	Hash       string    `json:"hash"`
-	Question   *Question `json:"question" gorm:"foreignKey:ID"`
-	Answers    []*Answer `json:"answers" gorm:"many2many:quiz_answers"`
-	Tags       []*Tag    `json:"tags" yaml:"-" gorm:"-"`
-	Correct    *Answer   `json:"correct" gorm:"foreignKey:ID"`
-	CorrectPos uint      `gorm:"-"` // Position of the correct answer during quiz creation
+	Question   *Question `json:"question"`
+	Answers    []*Answer `json:"answers"`
+	Tags       []string  `json:"tags" yaml:"-"`
+	Correct    *Answer   `json:"correct"`
+	CorrectPos uint      // Position of the correct answer during quiz creation
 	Type       int       `json:"type"`
 }
 
-func MarkdownToQuiz(markdown string) (*Quiz, *Meta, error) {
+func MarkdownToQuiz(quiz *Quiz, markdown string) error {
 	meta, remainingMarkdown, err := ParseMetaHeaderFromMarkdown(markdown)
 	if err != nil {
-		return nil, nil, err
+		return err
 	}
 
 	lines := strings.Split(remainingMarkdown, "\n")
 
 	questionText := ""
 	answers := []*Answer{}
+	tags := make([]string, 0)
 
 	for _, line := range lines {
 		if strings.HasPrefix(line, "*") {
@@ -45,26 +46,31 @@ func MarkdownToQuiz(markdown string) (*Quiz, *Meta, error) {
 			}
 			questionText += line
 		}
+
+		parseTags(&tags, line)
 	}
 
 	questionText = strings.TrimRight(questionText, "\n")
 
 	if questionText == "" {
-		return nil, nil, fmt.Errorf("Question text should not be empty.")
+		return fmt.Errorf("Question text should not be empty.")
 	}
 
 	if len(answers) < 2 {
-		return nil, nil, fmt.Errorf("Number of answers should be at least 2 but parsed answers are %d.", len(answers))
+		return fmt.Errorf("Number of answers should be at least 2 but parsed answers are %d.", len(answers))
 	}
 
 	question := &Question{Text: questionText}
-	quiz := &Quiz{Question: question, Answers: answers, CorrectPos: 0}
+
+	quiz.Question = question
+	quiz.Answers = answers
+	quiz.Tags = tags
 
 	if meta != nil {
 		quiz.Meta = *meta
 	}
 
-	return quiz, meta, nil
+	return nil
 }
 
 func QuizToMarkdown(quiz *Quiz) (string, error) {
@@ -96,18 +102,21 @@ func QuizToMarkdown(quiz *Quiz) (string, error) {
 	return markdown, nil
 }
 
-func (q *Quiz) GetID() string {
-	return q.ID
-}
-
-func (q *Quiz) SetID(id string) {
-	q.ID = id
-}
-
 func (q *Quiz) GetHash() string {
 	return q.calculateHash()
 }
 
+func (q *Quiz) Marshal() ([]byte, error) {
+	result, err := QuizToMarkdown(q)
+
+	return []byte(result), err
+
+}
+
+func (q *Quiz) Unmarshal(data []byte) error {
+	return MarkdownToQuiz(q, string(data))
+}
+
 func (q *Quiz) calculateHash() string {
 	result := make([]string, 0)
 
@@ -194,3 +203,30 @@ func readLine(reader *strings.Reader) (string, error) {
 
 	return sb.String(), nil
 }
+
+func parseTags(tags *[]string, text string) {
+	// Trim the following chars
+	trimChars := "*:.,/\\@()[]{}<>"
+
+	// Split the text into words
+	words := strings.Fields(text)
+
+	for _, word := range words {
+		// If the word starts with '#', it is considered as a tag
+		if strings.HasPrefix(word, "#") {
+			// Check if the tag already exists in the tags slice
+			exists := false
+			for _, tag := range *tags {
+				if tag == word {
+					exists = true
+					break
+				}
+			}
+
+			// If the tag does not exist in the tags slice, add it
+			if !exists {
+				*tags = append(*tags, strings.TrimRight(word, trimChars))
+			}
+		}
+	}
+}

pkg/models/response.go

@@ -0,0 +1,37 @@
+package models
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+type ParticipantAnswer struct {
+	Quiz    *Quiz   `json:"question"`
+	Answer  *Answer `json:"answer"`
+	Correct bool    `json:"correct"`
+}
+
+type Response struct {
+	Meta
+
+	SessionTitle string               `json:"session_title"`
+	Participant  *Participant         `json:"participant"`
+	Answers      []*ParticipantAnswer `json:"answers"`
+}
+
+func (r *Response) String() string {
+	return fmt.Sprintf("Questions/Answers: %v", r.Answers)
+}
+
+func (r *Response) GetHash() string {
+	//	return fmt.Sprintf("%x", sha256.Sum256([]byte(r.QuestionID+r.AnswerID)))
+	return ""
+}
+
+func (r *Response) Marshal() ([]byte, error) {
+	return json.Marshal(r)
+}
+
+func (r *Response) Unmarshal(data []byte) error {
+	return json.Unmarshal(data, r)
+}

pkg/models/session.go

@@ -0,0 +1,35 @@
+package models
+
+import (
+	"crypto/sha256"
+	"encoding/json"
+	"fmt"
+)
+
+type Session struct {
+	Meta
+
+	Title       string `json:"title"`
+	Description string `json:"description"`
+
+	Participants map[string]*Participant `json:"participants"`
+	Quizzes      map[string]*Quiz        `json:"quizzes"`
+	Answers      map[string]*Answer      `json:"answers"`
+	Exams        map[string]*Exam        `json:"exams"`
+}
+
+func (s *Session) String() string {
+	return s.Title
+}
+
+func (s *Session) GetHash() string {
+	return fmt.Sprintf("%x", sha256.Sum256([]byte(s.Title)))
+}
+
+func (s *Session) Marshal() ([]byte, error) {
+	return json.Marshal(s)
+}
+
+func (s *Session) Unmarshal(data []byte) error {
+	return json.Unmarshal(data, s)
+}

pkg/models/tag.go

@@ -0,0 +1,5 @@
+package models
+
+type Tag struct {
+	Name string `json:"name"`
+}

pkg/sessionmanager/score.go

@@ -0,0 +1,52 @@
+package sessionmanager
+
+import (
+	"fmt"
+	"log"
+
+	"git.andreafazzi.eu/andrea/probo/pkg/models"
+	"git.andreafazzi.eu/andrea/probo/pkg/store/file"
+)
+
+type Score struct {
+	Exam  *models.Exam
+	Score float32
+}
+
+type Scores []*Score
+
+func NewScores(responseFileStore *file.ResponseFileStore, session *models.Session) (Scores, error) {
+	var scores Scores
+
+	for _, exam := range session.Exams {
+		response, err := responseFileStore.Read(exam.ID)
+		if err != nil {
+			log.Println(err)
+			continue
+		}
+		scores = append(scores, CalcScore(response, exam))
+	}
+
+	return scores, nil
+}
+
+func (ss Scores) String() string {
+	var result string
+
+	for _, s := range ss {
+		result += fmt.Sprintf("%v\t%f\n", s.Exam.Participant, s.Score)
+	}
+
+	return result
+}
+
+func CalcScore(response *models.Response, exam *models.Exam) *Score {
+	var score float32
+	for _, q := range exam.Quizzes {
+		answerId := response.Questions[q.Question.ID]
+		if answerId == q.Correct.ID {
+			score++
+		}
+	}
+	return &Score{exam, score}
+}

pkg/sessionmanager/sessionmanager.go

@@ -0,0 +1,125 @@
+package sessionmanager
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"net/http"
+	"net/url"
+
+	"git.andreafazzi.eu/andrea/probo/pkg/models"
+	"git.andreafazzi.eu/andrea/probo/pkg/store"
+	"git.andreafazzi.eu/andrea/probo/pkg/store/file"
+)
+
+type SessionManager struct {
+	ParticipantStore *store.ParticipantStore
+	QuizStore        *store.QuizStore
+
+	ParticipantFilter map[string]string
+	QuizFilter        map[string]string
+	ServerURL         string
+	Token             int
+
+	examFileStore *file.ExamFileStore
+}
+
+func NewSessionManager(url string, pStore *store.ParticipantStore, qStore *store.QuizStore, pFilter map[string]string, qFilter map[string]string) (*SessionManager, error) {
+	sm := new(SessionManager)
+
+	sm.ServerURL = url
+
+	var err error
+
+	sm.examFileStore, err = file.NewDefaultExamFileStore()
+	if err != nil {
+		return nil, err
+	}
+
+	for _, p := range pStore.ReadAll() {
+		_, err := sm.examFileStore.Create(&models.Exam{
+			Participant: p,
+			Quizzes:     qStore.ReadAll(),
+		})
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return sm, nil
+}
+
+func (sm *SessionManager) GetExams() []*models.Exam {
+	return sm.examFileStore.ReadAll()
+}
+
+func (sm *SessionManager) Pull(rStore *file.ResponseFileStore, sessionID string) error {
+	url, err := url.JoinPath(sm.ServerURL, "responses/", sessionID)
+	if err != nil {
+		return err
+	}
+
+	rr, err := http.Get(url)
+	if err != nil {
+		return err
+	}
+
+	responseBody, err := io.ReadAll(rr.Body)
+	if err != nil {
+		return err
+	}
+
+	responses := make([]*models.Response, 0)
+
+	err = json.Unmarshal(responseBody, &responses)
+	if err != nil {
+		return err
+	}
+
+	for _, response := range responses {
+		_, err := rStore.Create(response)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (sm *SessionManager) Push(name string) (*models.Session, error) {
+	session := &models.Session{
+		Name:  name,
+		Exams: make(map[string]*models.Exam),
+	}
+
+	for _, e := range sm.GetExams() {
+		session.Exams[e.Participant.Token] = e
+	}
+
+	payload, err := session.Marshal()
+	if err != nil {
+		return nil, err
+	}
+
+	url, err := url.JoinPath(sm.ServerURL, "create")
+	if err != nil {
+		return nil, err
+	}
+
+	response, err := http.Post(url, "application/json", bytes.NewReader(payload))
+	if err != nil {
+		return nil, err
+	}
+
+	responseBody, err := io.ReadAll(response.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	err = json.Unmarshal(responseBody, &session)
+	if err != nil {
+		return nil, err
+	}
+
+	return session, nil
+}

pkg/store/exam.go

@@ -0,0 +1,5 @@
+package store
+
+import "git.andreafazzi.eu/andrea/probo/pkg/models"
+
+type ExamStore = Store[*models.Exam]

pkg/store/file/defaults.go

@@ -0,0 +1,49 @@
+package file
+
+import "path/filepath"
+
+var (
+	DefaultBaseDir            = "data"
+	DefaultQuizzesSubdir      = "quizzes"
+	DefaultCollectionsSubdir  = "collections"
+	DefaultParticipantsSubdir = "participants"
+	DefaultGroupsSubdir       = "groups"
+	DefaultExamsSubdir        = "exams"
+	DefaultResponsesSubdir    = "responses"
+	DefaultSessionSubdir      = "sessions"
+
+	Dirs = []string{
+		GetDefaultQuizzesDir(),
+		GetDefaultParticipantsDir(),
+		GetDefaultExamsDir(),
+		GetDefaultSessionDir(),
+	}
+)
+
+func GetDefaultQuizzesDir() string {
+	return filepath.Join(DefaultBaseDir, DefaultQuizzesSubdir)
+}
+
+func GetDefaultCollectionsDir() string {
+	return filepath.Join(DefaultBaseDir, DefaultCollectionsSubdir)
+}
+
+func GetDefaultParticipantsDir() string {
+	return filepath.Join(DefaultBaseDir, DefaultParticipantsSubdir)
+}
+
+func GetDefaultGroupsDir() string {
+	return filepath.Join(DefaultBaseDir, DefaultGroupsSubdir)
+}
+
+func GetDefaultExamsDir() string {
+	return filepath.Join(DefaultBaseDir, DefaultExamsSubdir)
+}
+
+func GetDefaultSessionDir() string {
+	return filepath.Join(DefaultBaseDir, DefaultSessionSubdir)
+}
+
+func GetDefaultResponsesDir() string {
+	return filepath.Join(DefaultBaseDir, DefaultResponsesSubdir)
+}

pkg/store/file/exam.go

@@ -0,0 +1,28 @@
+package file
+
+import (
+	"git.andreafazzi.eu/andrea/probo/pkg/models"
+	"git.andreafazzi.eu/andrea/probo/pkg/store"
+)
+
+type ExamFileStore = FileStore[*models.Exam, *store.Store[*models.Exam]]
+
+func NewExamFileStore(config *FileStoreConfig[*models.Exam, *store.ExamStore]) (*ExamFileStore, error) {
+	return NewFileStore[*models.Exam](config, store.NewStore[*models.Exam]())
+}
+
+func NewDefaultExamFileStore() (*ExamFileStore, error) {
+	return NewExamFileStore(
+		&FileStoreConfig[*models.Exam, *store.ExamStore]{
+			FilePathConfig: FilePathConfig{GetDefaultExamsDir(), "exam", ".json"},
+			IndexDirFunc:   DefaultIndexDirFunc[*models.Exam, *store.ExamStore],
+			CreateEntityFunc: func() *models.Exam {
+				return &models.Exam{
+					Participant: &models.Participant{},
+					Quizzes:     make([]*models.Quiz, 0),
+				}
+			},
+		},
+	)
+
+}

pkg/store/file/exam_test.go

@@ -0,0 +1,103 @@
+package file
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+
+	"git.andreafazzi.eu/andrea/probo/pkg/models"
+	"github.com/remogatto/prettytest"
+)
+
+type examTestSuite struct {
+	prettytest.Suite
+}
+
+// func (t *examTestSuite) TestCreate() {
+// 	participantStore, err := NewParticipantFileStore(
+// 		&FileStoreConfig[*models.Participant, *store.ParticipantStore]{
+// 			FilePathConfig: FilePathConfig{"testdata/exams/participants", "participant", ".json"},
+// 			IndexDirFunc:   DefaultIndexDirFunc[*models.Participant, *store.ParticipantStore],
+// 			CreateEntityFunc: func() *models.Participant {
+// 				return &models.Participant{
+// 					Attributes: make(map[string]string),
+// 				}
+// 			},
+// 		},
+// 	)
+
+// 	t.Nil(err)
+
+// 	quizStore, err := NewQuizFileStore(
+// 		&FileStoreConfig[*models.Quiz, *store.QuizStore]{
+// 			FilePathConfig: FilePathConfig{"testdata/exams/quizzes", "quiz", ".md"},
+// 			IndexDirFunc:   DefaultQuizIndexDirFunc,
+// 		},
+// 	)
+
+// 	t.Nil(err)
+
+// 	if !t.Failed() {
+// 		t.Equal(3, len(participantStore.ReadAll()))
+
+// 		examStore, err := NewDefaultExamFileStore()
+// 		t.Nil(err)
+
+// 		if !t.Failed() {
+// 			g := new(models.Group)
+// 			c := new(models.Collection)
+
+// 			participants := participantStore.Storer.FilterInGroup(g, map[string]string{"class": "1 D LIN"})
+// 			quizzes := quizStore.Storer.FilterInCollection(c, map[string]string{"tags": "#tag1"})
+
+// 			for _, p := range participants {
+// 				e := new(models.Exam)
+// 				e.Participant = p
+// 				e.Quizzes = quizzes
+
+// 				_, err = examStore.Create(e)
+// 				t.Nil(err)
+
+// 				defer os.Remove(examStore.GetPath(e))
+
+// 				examFromDisk, err := readExamFromJSON(e.GetID())
+// 				t.Nil(err)
+
+// 				if !t.Failed() {
+// 					t.Not(t.Nil(examFromDisk.Participant))
+// 					if !t.Failed() {
+// 						t.Equal("Smith", examFromDisk.Participant.Lastname)
+// 						t.Equal(2, len(examFromDisk.Quizzes))
+// 					}
+// 				}
+// 			}
+// 		}
+// 	}
+// }
+
+func readExamFromJSON(examID string) (*models.Exam, error) {
+	// Build the path to the JSON file
+	jsonPath := fmt.Sprintf("testdata/exams/exam_%s.json", examID)
+
+	// Open the JSON file
+	file, err := os.Open(jsonPath)
+	if err != nil {
+		return nil, fmt.Errorf("failed to open JSON file: %w", err)
+	}
+	defer file.Close()
+
+	// Read the JSON data from the file
+	jsonData, err := io.ReadAll(file)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read JSON data: %w", err)
+	}
+
+	// Unmarshal the JSON data into an Exam object
+	var exam models.Exam
+	if err := json.Unmarshal(jsonData, &exam); err != nil {
+		return nil, fmt.Errorf("failed to parse JSON data: %w", err)
+	}
+
+	return &exam, nil
+}

pkg/store/file/file.go

@@ -0,0 +1,232 @@
+package file
+
+import (
+	"errors"
+	"fmt"
+	"io/fs"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+
+	"git.andreafazzi.eu/andrea/probo/pkg/store"
+)
+
+type IndexDirFunc[T FileStorable, K store.Storer[T]] func(s *FileStore[T, K]) error
+
+var (
+	ErrorMetaHeaderIsNotPresent = errors.New("Meta header was not found in file.")
+)
+
+type FileStorable interface {
+	store.Storable
+
+	Marshal() ([]byte, error)
+	Unmarshal([]byte) error
+}
+
+type FileStorer[T FileStorable] interface {
+	// store.Storer[T]
+	Create(T, ...string) (T, error)
+	ReadAll() []T
+	Read(string) (T, error)
+	Update(T, string) (T, error)
+	Delete(string) (T, error)
+}
+
+type FilePathConfig struct {
+	Dir        string
+	FilePrefix string
+	FileSuffix string
+}
+
+type FileStoreConfig[T FileStorable, K store.Storer[T]] struct {
+	FilePathConfig
+	IndexDirFunc     func(*FileStore[T, K]) error
+	CreateEntityFunc func() T
+	NoIndexOnCreate  bool
+}
+
+type FileStore[T FileStorable, K store.Storer[T]] struct {
+	*FileStoreConfig[T, K]
+
+	Storer K
+
+	lock  sync.RWMutex
+	paths map[string]string
+}
+
+func DefaultIndexDirFunc[T FileStorable, K store.Storer[T]](s *FileStore[T, K]) error {
+	if s.CreateEntityFunc == nil {
+		return errors.New("CreateEntityFunc cannot be nil!")
+	}
+
+	files, err := os.ReadDir(s.Dir)
+	if err != nil {
+		return err
+	}
+
+	entityFiles := make([]fs.DirEntry, 0)
+
+	for _, file := range files {
+		filename := file.Name()
+		if !file.IsDir() && strings.HasSuffix(filename, s.FileSuffix) {
+			entityFiles = append(entityFiles, file)
+		}
+	}
+
+	for _, file := range entityFiles {
+		filename := file.Name()
+		fullPath := filepath.Join(s.Dir, filename)
+
+		fileInfo, err := os.Stat(fullPath)
+		if err != nil {
+			panic(err)
+		}
+
+		if fileInfo.Size() > 0 {
+			content, err := os.ReadFile(fullPath)
+			if err != nil {
+				return err
+			}
+
+			entity := s.CreateEntityFunc()
+
+			err = entity.Unmarshal(content)
+			if err != nil {
+				return fmt.Errorf("An error occurred unmarshalling %v: %v", filename, err)
+			}
+
+			// mEntity, err := s.Create(entity, fullPath)
+			mEntity, err := s.Storer.Create(entity)
+			if err != nil {
+				return err
+			}
+
+			s.SetPath(mEntity, fullPath)
+		}
+	}
+
+	return nil
+
+}
+
+func NewFileStore[T FileStorable, K store.Storer[T]](config *FileStoreConfig[T, K], storer K) (*FileStore[T, K], error) {
+	store := &FileStore[T, K]{
+		FileStoreConfig: config,
+		Storer:          storer,
+		paths:           make(map[string]string, 0),
+	}
+
+	if !config.NoIndexOnCreate {
+		err := store.IndexDir()
+		if err != nil {
+			return nil, err
+
+		}
+	}
+
+	return store, nil
+}
+
+func (s *FileStore[T, K]) Create(entity T, path ...string) (T, error) {
+	e, err := s.Storer.Create(entity)
+	if err != nil {
+		return e, err
+	}
+
+	data, err := e.Marshal()
+	if err != nil {
+		return e, err
+	}
+
+	if len(path) == 0 {
+		path = append(path, filepath.Join(s.Dir, fmt.Sprintf("%s_%v%s", s.FilePrefix, e.GetID(), s.FileSuffix)))
+	}
+
+	file, err := os.Create(path[0])
+	if err != nil {
+		return e, err
+	}
+
+	defer file.Close()
+
+	_, err = file.Write(data)
+	if err != nil {
+		return e, err
+	}
+
+	s.SetPath(e, path[0])
+
+	return e, nil
+}
+
+func (s *FileStore[T, K]) Update(entity T, id string) (T, error) {
+	e, err := s.Storer.Update(entity, id)
+	if err != nil {
+		return e, err
+	}
+
+	filePath := s.GetPath(e)
+
+	data, err := e.Marshal()
+	if err != nil {
+		return e, err
+	}
+
+	file, err := os.Create(filePath)
+	if err != nil {
+		return e, err
+	}
+
+	defer file.Close()
+
+	_, err = file.Write(data)
+	if err != nil {
+		return e, err
+	}
+
+	return e, nil
+}
+
+func (s *FileStore[T, K]) Read(id string) (T, error) {
+	return s.Storer.Read(id)
+}
+
+func (s *FileStore[T, K]) ReadAll() []T {
+	return s.Storer.ReadAll()
+}
+
+func (s *FileStore[T, K]) Delete(id string) (T, error) {
+	e, err := s.Storer.Delete(id)
+	if err != nil {
+		return e, err
+	}
+
+	err = os.Remove(s.GetPath(e))
+	if err != nil {
+		return e, err
+	}
+
+	return e, nil
+}
+
+func (s *FileStore[T, K]) IndexDir() error {
+	return s.IndexDirFunc(s)
+}
+
+func (s *FileStore[T, K]) GetPath(entity T) string {
+	s.lock.RLock()
+	defer s.lock.RUnlock()
+
+	return s.paths[entity.GetID()]
+}
+
+func (s *FileStore[T, K]) SetPath(entity T, path string) string {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	s.paths[entity.GetID()] = path
+
+	return path
+}

pkg/store/file/file_test.go

@@ -9,9 +9,12 @@ import (
 var testdataDir = "./testdata"
 
 func TestRunner(t *testing.T) {
+	DefaultBaseDir = "testdata"
+
 	prettytest.Run(
 		t,
 		new(quizTestSuite),
-		new(collectionTestSuite),
+		new(participantTestSuite),
+		new(examTestSuite),
 	)
 }

pkg/store/file/participant.go

@@ -0,0 +1,53 @@
+package file
+
+import (
+	"git.andreafazzi.eu/andrea/probo/pkg/models"
+	"git.andreafazzi.eu/andrea/probo/pkg/store"
+)
+
+type ParticipantFileStore struct {
+	*FileStore[*models.Participant, *store.ParticipantStore]
+}
+
+func NewParticipantFileStore(config *FileStoreConfig[*models.Participant, *store.ParticipantStore]) (*ParticipantFileStore, error) {
+	var err error
+
+	pStore := new(ParticipantFileStore)
+
+	pStore.FileStore, err = NewFileStore(config, store.NewParticipantStore())
+	if err != nil {
+		return nil, err
+	}
+
+	return pStore, nil
+}
+
+func NewDefaultParticipantFileStore() (*ParticipantFileStore, error) {
+	return NewParticipantFileStore(
+		&FileStoreConfig[*models.Participant, *store.ParticipantStore]{
+			FilePathConfig: FilePathConfig{GetDefaultParticipantsDir(), "participant", ".json"},
+			IndexDirFunc:   DefaultIndexDirFunc[*models.Participant, *store.ParticipantStore],
+			CreateEntityFunc: func() *models.Participant {
+				return &models.Participant{
+					Attributes: make(map[string]string),
+				}
+			},
+		},
+	)
+}
+
+func (ps *ParticipantFileStore) ImportCSV(path string) ([]*models.Participant, error) {
+	participants, err := ps.FileStore.Storer.ImportCSV(path)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, p := range participants {
+		_, err := ps.Create(p)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return participants, nil
+}

pkg/store/file/participant_test.go

@@ -0,0 +1,36 @@
+package file
+
+import (
+	"os"
+
+	"git.andreafazzi.eu/andrea/probo/pkg/models"
+	"github.com/remogatto/prettytest"
+)
+
+type participantTestSuite struct {
+	prettytest.Suite
+}
+
+func (t *participantTestSuite) TestCreate() {
+	pStore, err := NewDefaultParticipantFileStore()
+	t.Nil(err)
+
+	if !t.Failed() {
+		p, err := pStore.Create(&models.Participant{
+			Lastname:   "Doe",
+			Firstname:  "John",
+			Attributes: map[string]string{"class": "1 D LIN"},
+		})
+
+		t.Nil(err)
+
+		defer os.Remove(pStore.GetPath(p))
+
+		if !t.Failed() {
+			exists, err := os.Stat(pStore.GetPath(p))
+
+			t.Nil(err)
+			t.Not(t.Nil(exists))
+		}
+	}
+}