Use templates for rendering long CLI description

cmd/filter.go

@@ -11,53 +11,20 @@ import (
 	"git.andreafazzi.eu/andrea/probo/cmd/filter"
 	"git.andreafazzi.eu/andrea/probo/cmd/util"
 	tea "github.com/charmbracelet/bubbletea"
-	"github.com/charmbracelet/glamour"
 	"github.com/charmbracelet/huh"
 	"github.com/charmbracelet/lipgloss"
 	"github.com/muesli/termenv"
 	"github.com/spf13/cobra"
 )
 
-var longDescription string = `
+var filterCmd = &cobra.Command{
-# Filters
+	Use:   "filter {participants,quizzes,responses}",
-
+	Short: "Filter the given store",
-**Filters can made selection over stores.**
+	Long:  util.RenderMarkdownTemplates("cli/*.tmpl", "cli/filter/*.tmpl"),
-
+	Run:   runFilter,
-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
-
-Filter over participants store.
-
-**probo filter participants**
-
-Filter over quizzes store using the jq filter in tags.jq file
-
-**probo filter quizzes -i data/filters/tags.jq**
-
-Filter over participants and pipe the result on the next filter. The result is then stored in a JSON file.
-
-**probo filter participants | probo filter quizzes > data/json/selection.json**
-`
 
 func init() {
-	desc, err := glamour.Render(fmt.Sprintf("```\n%s```\n%s", logo, longDescription), "dark")
-	if err != nil {
-		panic(err)
-	}
-
-	filterCmd := &cobra.Command{
-		Use:   "filter {participants,quizzes,responses}",
-		Short: "Filter the given store",
-		Long:  desc,
-		Run:   runFilter,
-	}
-
 	rootCmd.AddCommand(filterCmd)
 	filterCmd.PersistentFlags().StringP("input", "i", "", "Specify an input file")
 }

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/root.go

@@ -25,20 +25,24 @@ import (
 	"fmt"
 	"os"
 
+	"git.andreafazzi.eu/andrea/probo/cmd/util"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 )
 
-var cfgFile string
+var (
+	cfgFile string
+)
 
 // rootCmd represents the base command when called without any subcommands
 var rootCmd = &cobra.Command{
 	Use:   "probo",
-	Short: "A Quiz Management System for Hackers!",
+	Short: "A Quiz Management System",
-	Long: `
+	/*Long: `
-Probo is a CLI/TUI application that allows for the quick
+	Probo is a CLI/TUI application that allows for the quick
-creation of quizzes from markdown files and their distribution
+	creation of quizzes from markdown files and their distribution
-as web pages.`,
+		  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:

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/{token}", serve.Recover(examController))
+	mux.Handle("POST /sessions/{uuid}/exams/{token}", 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 +1,78 @@
+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)
+	}
+
+	participantToken := r.PathValue("token")
+
+	session, err := c.sStore.Read(r.PathValue("uuid"))
+	if err != nil {
+		panic(err)
+	}
+
+	exam, ok := session.Exams[participantToken]
+	if !ok {
+		panic(errors.New("Exam not found in the store!"))
+	}
+
+	examWithSession := struct {
+		*models.Exam
+		SessionID string
+	}{exam, session.ID}
+
+	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)
+
+		for quizID, values := range r.Form {
+			correct := false
+			quiz := session.Quizzes[quizID]
+
+			for _, answerID := range values {
+				log.Info(answerID)
+				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{
+				SessionID: session.ID,
+				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 {
+		Token string
+		*models.Session
+	}
+
+	for _, session := range c.sStore.ReadAll() {
+		for _, exam := range session.Exams {
+			if exam.Participant.Token == claims["token"] {
+				s := struct {
+					Token string
+					*models.Session
+				}{exam.Participant.Token, session}
+				participantSessions = append(participantSessions, s)
+				break
+			}
+		}
+	}
+
+	err = c.ExecuteTemplate(w, participantSessions)
+	if err != nil {
+		panic(err)
+	}
+}

cmd/session/session.go

@@ -213,7 +213,7 @@ func (m *SessionModel) View() string {
 	return m.document.View()
 }
 
-func (m *SessionModel) executeScript(path string) tea.Cmd {
+func (m *SessionModel) executeScript() tea.Cmd {
 	return func() tea.Msg {
 		if m.scriptFilePath == "" {
 			return nil
@@ -302,7 +302,7 @@ func (m *SessionModel) updateViewportContent(session *models.Session) {
 		m.showErrorOnStatusBar(err)
 	}
 
-	m.viewport.SetContent(result)
+	m.viewport.SetContent(sanitize(result))
 
 }
 

cmd/templates/filter.tmpl

@@ -1,3 +0,0 @@
-{{define "description"}}
-{{.Description}}
-{{end}}

cmd/update.go

@@ -1,6 +1,5 @@
 /*
 Copyright © 2024 NAME HERE <EMAIL ADDRESS>
-
 */
 package cmd
 
@@ -13,7 +12,7 @@ import (
 // updateCmd represents the update command
 var updateCmd = &cobra.Command{
 	Use:   "update",
-	Short: "A brief description of your command",
+	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:
 
@@ -27,14 +26,4 @@ to quickly create a Cobra application.`,
 
 func init() {
 	rootCmd.AddCommand(updateCmd)
-
-	// Here you will define your flags and configuration settings.
-
-	// Cobra supports Persistent Flags which will work for this command
-	// and all subcommands, e.g.:
-	// updateCmd.PersistentFlags().String("foo", "", "A help for foo")
-
-	// Cobra supports local flags which will only run when this command
-	// is called directly, e.g.:
-	// updateCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
 }

cmd/util/util.go

@@ -2,14 +2,39 @@ 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]")

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

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

embed/cli/logo.tmpl

@@ -0,0 +1,10 @@
+{{define "logo"}}
+```
+ ____            _               
+|  _ \ _ __ ___ | |__   ___      
+| |_) | '__/ _ \| '_ \ / _ \     
+|  __/| | | (_) | |_) | (_) |    
+|_|   |_|  \___/|_.__/ \___/____ 
+                          |_____|
+```
+{{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 +1,42 @@
+<!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>
+
+    <header class="d-flex flex-wrap align-items-center justify-content-between py-3 border-bottom p-3 text-bg-dark border-bottom sticky-top">
+      <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>
+
+      <div class="text-end">
+        <input type="submit" value="Salva" class="btn btn-primary me-2" form="submit-exam-form"/>
+      </div>
+    </header>
+    
+    <form action="/sessions/{{.SessionID}}/exams/{{.Participant.Token}}" method="POST" id="submit-exam-form"/>
+    
+    {{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/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.Token}}" class="btn btn-primary">Inizia!</a>
+	</div>
+      </div>
+    </div>
+  </div>
+  {{ end }}
+</div>
+{{ end }}

go.mod

@@ -1,15 +1,18 @@
 module git.andreafazzi.eu/andrea/probo
 
-go 1.21.6
+go 1.22.2
 
 require (
 	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/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
@@ -24,10 +27,13 @@ require (
 require (
 	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
@@ -38,10 +44,12 @@ require (
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-localereader v0.0.1 // indirect
 	github.com/mattn/go-runewidth v0.0.15 // indirect
+	github.com/microcosm-cc/bluemonday v1.0.21 // 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
@@ -52,9 +60,12 @@ require (
 	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

go.sum

@@ -6,18 +6,25 @@ github.com/alecthomas/chroma v0.10.0 h1:7XDcGkCQopCNKjZHfYrNLraA+M7e0fMiJ/Mfikbf
 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/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=
@@ -34,12 +41,18 @@ github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHk
 github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
 github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nosvA=
 github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM=
+github.com/go-logfmt/logfmt v0.6.0 h1:wGYYu3uicYdqXVgoYbvnkrPVXkuLM1p1ifugDMEdRi4=
+github.com/go-logfmt/logfmt v0.6.0/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs=
 github.com/gocarina/gocsv v0.0.0-20231116093920-b87c2d0e983a h1:RYfmiM0zluBJOiPDJseKLEN4BapJ42uSi9SZBQ2YyiA=
 github.com/gocarina/gocsv v0.0.0-20231116093920-b87c2d0e983a/go.mod h1:5YoVOkjYAQumqlV356Hj3xeYh4BdZuLE0/nRkf2NKkI=
+github.com/golang-jwt/jwt v3.2.2+incompatible h1:IfV12K8xAKAnZqdXVzCZ+TOjboZ2keLg81eXfW3O+oY=
+github.com/golang-jwt/jwt v3.2.2+incompatible/go.mod h1:8pz2t5EyA70fFQQSrl6XZXzqecmYZeUEB8OUGHkxJ+I=
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
 github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/gorilla/css v1.0.0 h1:BQqNyPTi50JCFMTw/b67hByjMVXZRwGha6wxVGkeihY=
+github.com/gorilla/css v1.0.0/go.mod h1:Dn721qIggHpt4+EFCcTLTU/vk5ySda2ReITrtgBl60c=
 github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
@@ -58,13 +71,18 @@ github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69
 github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
 github.com/magiconair/properties v1.8.7 h1:IeQXZAiQcpL9mgcAe1Nu6cX9LLw6ExEHKjN0VQdvPDY=
 github.com/magiconair/properties v1.8.7/go.mod h1:Dhd985XPs7jluiymwWYZ0G4Z61jb3vdS329zhj2hYo0=
+github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-localereader v0.0.1 h1:ygSAOl7ZXTx4RdPYinUpg6W99U8jWvWi9Ye2JC/oIi4=
 github.com/mattn/go-localereader v0.0.1/go.mod h1:8fBrzywKY7BI3czFoHkuzRoWE9C+EiG4R1k4Cjx5p88=
+github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/mattn/go-runewidth v0.0.12/go.mod h1:RAqKPSqVFrSLVXbA8x7dzmKdmGzieGRCM46jaSJTDAk=
+github.com/mattn/go-runewidth v0.0.14/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
 github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/microcosm-cc/bluemonday v1.0.21 h1:dNH3e4PSyE4vNX+KlRGHT5KrSvjeUkoNPwEORjffHJg=
+github.com/microcosm-cc/bluemonday v1.0.21/go.mod h1:ytNkv4RrDrLJ2pqlsSI46O6IVXmZOBBD4SaJyDwwTkM=
 github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
 github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 h1:ZK8zHtRHOkbHy6Mmr5D264iyp3TiX5OmNcI5cIARiQI=
@@ -73,8 +91,11 @@ github.com/muesli/cancelreader v0.2.2 h1:3I4Kt4BQjOR54NavqnDogx/MIoWBFa0StPA8ELU
 github.com/muesli/cancelreader v0.2.2/go.mod h1:3XuTXfFS2VjM+HTLZY9Ak0l6eUKfijIfMUZ4EgX0QYo=
 github.com/muesli/reflow v0.3.0 h1:IFsN6K9NfGtjeggFP+68I4chLZV2yIKsXJFNZ+eWh6s=
 github.com/muesli/reflow v0.3.0/go.mod h1:pbwTDkVPibjO2kyvBQRBxTWEEGDGq0FlB1BIKtnHY/8=
+github.com/muesli/termenv v0.13.0/go.mod h1:sP1+uffeLaEYpyOTb8pLCUctGcGLnoFjSn4YJK5e2bc=
 github.com/muesli/termenv v0.15.2 h1:GohcuySI0QmI3wN8Ok9PtKGkgkFIk7y6Vpb5PvrY+Wo=
 github.com/muesli/termenv v0.15.2/go.mod h1:Epx+iuz8sNs7mNKhxzH4fWXGNpZwUaJKRS1noLXviQ8=
+github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec=
+github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
 github.com/pelletier/go-toml/v2 v2.1.0 h1:FnwAJ4oYMvbT/34k9zzHuZNrhlz48GB3/s6at6/MHO4=
 github.com/pelletier/go-toml/v2 v2.1.0/go.mod h1:tJU2Z3ZkXwnxa4DPO899bsyIoywizdUvyaeZurnPPDc=
 github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
@@ -117,24 +138,39 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/subosito/gotenv v1.6.0 h1:9NlTDc1FTs4qu0DDq7AEtTPNw6SVm7uBMsUCUjABIf8=
 github.com/subosito/gotenv v1.6.0/go.mod h1:Dk4QP5c2W3ibzajGcXpNraDfq2IrhjMIvMSWPKKo0FU=
+github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+github.com/yuin/goldmark v1.5.2 h1:ALmeCk/px5FSm1MAcFBAsVKZjDuMVj8Tm7FFIlMJnqU=
+github.com/yuin/goldmark v1.5.2/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+github.com/yuin/goldmark-emoji v1.0.1 h1:ctuWEyzGBwiucEqxzwe0SOYDXPAucOrE9NQC18Wa1os=
+github.com/yuin/goldmark-emoji v1.0.1/go.mod h1:2w1E6FEWLcDQkoTE+7HU6QF1F6SLlNGjRIBbIZQFqkQ=
 go.uber.org/atomic v1.9.0 h1:ECmE8Bn/WFTYwEW/bpKD3M8VtR/zQVbavAoalC1PYyE=
 go.uber.org/atomic v1.9.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
 go.uber.org/multierr v1.9.0 h1:7fIwc/ZtS0q++VgcfqFDxSBZVv/Xo49/SYnDFupUwlI=
 go.uber.org/multierr v1.9.0/go.mod h1:X2jQV1h+kxSjClGpnseKVIxpmcjrj7MNnI0bnlfKTVQ=
 golang.org/x/exp v0.0.0-20240112132812-db7319d0e0e3 h1:hNQpMuAJe5CtcUqCXaWga3FHu+kQvCqcsoVaQgSV60o=
 golang.org/x/exp v0.0.0-20240112132812-db7319d0e0e3/go.mod h1:idGWGoKP1toJGkd5/ig9ZLuPcZBC3ewk7SzmH0uou08=
+golang.org/x/net v0.0.0-20221002022538-bcab6841153b/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
+golang.org/x/net v0.19.0 h1:zTwKpTd2XuCqf8huc7Fo2iSy+4RHPd10s4KzeTnVr1c=
+golang.org/x/net v0.19.0/go.mod h1:CfAk/cbD4CthTvqiEl8NpboMuiuOYsAr/7NOjZJtv1U=
 golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
 golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
 golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.18.0 h1:FcHjZXDMxI8mM3nwhX9HlKop4C0YQvCVCdwYl2wOtE8=
 golang.org/x/term v0.18.0/go.mod h1:ILwASektA3OnRv7amZ1xhE/KTR+u50pbXfZ03+6Nx58=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

go.work

@@ -1,4 +1,6 @@
-go 1.21.6
+go 1.22.2
+
+toolchain go1.22.3
 
 use (
 	.

go.work.sum

@@ -5,8 +5,6 @@ cloud.google.com/go/firestore v1.14.0/go.mod h1:96MVaHLsEhbvkBEdZgfN+AS/GIkco1LR
 cloud.google.com/go/iam v1.1.5/go.mod h1:rB6P/Ic3mykPbFio+vo7403drjlgvoWfYpJhMXEbzv8=
 cloud.google.com/go/longrunning v0.5.4/go.mod h1:zqNVncI0BOP8ST6XQD1+VcvuShMmq7+xFSzOL++V0dI=
 cloud.google.com/go/storage v1.35.1/go.mod h1:M6M/3V/D3KpzMTJyPOR/HU6n2Si5QdaXYEsng2xgOs8=
-github.com/MakeNowJust/heredoc v1.0.0/go.mod h1:mG5amYoWBHf8vpLOuehzbGGw0EHxpZZ6lCpQ4fNJ8LE=
-github.com/acarl005/stripansi v0.0.0-20180116102854-5a71ef0e047d/go.mod h1:asat636LX7Bqt5lYEZ27JNDcqxfjdBQuJ/MM4CN/Lzo=
 github.com/armon/go-metrics v0.4.1/go.mod h1:E6amYzXo6aW1tqzoZGT755KkbgrJsSdpwZ+3JqfkOG4=
 github.com/aymanbagabas/go-osc52 v1.0.3 h1:DTwqENW7X9arYimJrPeGZcV0ln14sGMt3pHZspWD+Mg=
 github.com/charmbracelet/harmonica v0.2.0/go.mod h1:KSri/1RMQOZLbw7AHqgcBycp8pgJnQMYYT8QZRqZ1Ao=
@@ -51,6 +49,8 @@ github.com/sahilm/fuzzy v0.1.1 h1:ceu5RHF8DGgoi+/dR5PsECjCDH1BE3Fnmpo7aVXOdRA=
 github.com/sahilm/fuzzy v0.1.1/go.mod h1:VFvziUEIMCrT6A6tw2RFIXPXXmzXbOsSHF0DOI8ZK9Y=
 github.com/srwiley/oksvg v0.0.0-20220128195007-1f435e4c2b44/go.mod h1:cNQ3dwVJtS5Hmnjxy6AgTPd0Inb3pW05ftPSX7NZO7Q=
 github.com/srwiley/rasterx v0.0.0-20220128185129-2efea2b9ea41/go.mod h1:nXTWP6+gD5+LUJ8krVhhoeHjvHTutPxMYl5SvkcnJNE=
+github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 go.etcd.io/etcd/api/v3 v3.5.10/go.mod h1:TidfmT4Uycad3NM/o25fG3J07odo4GBB9hoxaodFCtI=
 go.etcd.io/etcd/client/pkg/v3 v3.5.10/go.mod h1:DYivfIviIuQ8+/lCq4vcxuseg2P2XbHygkKwFo9fc8U=
@@ -65,7 +65,6 @@ golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.14.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
-golang.org/x/net v0.19.0/go.mod h1:CfAk/cbD4CthTvqiEl8NpboMuiuOYsAr/7NOjZJtv1U=
 golang.org/x/oauth2 v0.15.0/go.mod h1:q48ptWNTY5XWf+JNten23lcvHpLJ0ZSxF5ttTHKVCAM=
 golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=

main.go

@@ -21,7 +21,9 @@ THE SOFTWARE.
 */
 package main
 
-import "git.andreafazzi.eu/andrea/probo/cmd"
+import (
+	"git.andreafazzi.eu/andrea/probo/cmd"
+)
 
 func main() {
 	cmd.Execute()

pkg/store/file/file.go

@@ -88,7 +88,7 @@ func DefaultIndexDirFunc[T FileStorable, K store.Storer[T]](s *FileStore[T, K])
 
 		err = entity.Unmarshal(content)
 		if err != nil {
-			return err
+			return fmt.Errorf("An error occurred unmarshalling %v: %v", filename, err)
 		}
 
 		mEntity, err := s.Create(entity, fullPath)

pkg/store/file/quiz.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"bytes"
 	"errors"
+	"fmt"
 	"io"
 	"io/fs"
 	"os"
@@ -60,7 +61,7 @@ func DefaultQuizIndexDirFunc(s *QuizFileStore) error {
 
 		err = entity.Unmarshal(content)
 		if err != nil {
-			return err
+			return fmt.Errorf("An error occurred unmarshalling %v: %v", filename, err)
 		}
 
 		var errQuizAlreadyPresent *store.ErrQuizAlreadyPresent