From c19631e65b33ba2d14c635819d37ffc38e7d245c Mon Sep 17 00:00:00 2001
From: Andrea Fazzi <andrea.fazzi@carducci-dante.gov.it>
Date: Wed, 18 Dec 2019 09:47:37 +0100
Subject: [PATCH] Encode/decode single responses

---
 orm/response.go                         | 65 ++++++++++++++++++++-----
 templates/responses_add_update.html.tpl |  4 +-
 templates/responses_show.html.tpl       |  8 +++
 3 files changed, 64 insertions(+), 13 deletions(-)

diff --git a/orm/response.go b/orm/response.go
index 97adbaca..6e0cad05 100644
--- a/orm/response.go
+++ b/orm/response.go
@@ -2,11 +2,17 @@ package orm
 
 import (
 	"net/http"
+	"strconv"
+	"strings"
 
 	"git.andreafazzi.eu/andrea/oef/renderer"
 	"github.com/jinzhu/gorm"
 )
 
+type SingleResponse struct {
+	AnswerID uint
+}
+
 type Response struct {
 	gorm.Model
 
@@ -22,19 +28,42 @@ type Response struct {
 	ContestID uint
 
 	QuestionsOrder string
+	AnswersIDs     string
 
-	Questions []*Question
+	Score int `gorm:"-"`
 
-	//	SelectedElement map[uint]string `gorm:"-"`
-	//	AllElements     []*Element      `gorm:"-"`
+	Questions       []*Question
+	SingleResponses []*SingleResponse `gorm:"-"`
 }
 
+func (sr *SingleResponse) UnmarshalText(text []byte) error {
+	id, err := strconv.Atoi(string(text))
+	sr.AnswerID = uint(id)
+	if err != nil {
+		return err
+	}
+	return nil
+
+}
 func (model *Response) GetID() uint { return model.ID }
 
 func (model *Response) String() string {
 	return model.Name
 }
 
+func (model *Response) generateAnswersIDs() string {
+	ids := make([]string, 0)
+	for _, sr := range model.SingleResponses {
+		ids = append(ids, strconv.Itoa(int(sr.AnswerID)))
+	}
+	return strings.Join(ids, " ")
+}
+
+func (model *Response) BeforeSave(tx *gorm.DB) error {
+	model.AnswersIDs = model.generateAnswersIDs()
+	return nil
+}
+
 func (model *Response) Create(args map[string]string, w http.ResponseWriter, r *http.Request) (interface{}, error) {
 	if r.Method == "GET" {
 		response := new(Response)
@@ -71,8 +100,29 @@ func (model *Response) Read(args map[string]string, w http.ResponseWriter, r *ht
 		return nil, err
 	}
 
+	srIDs := strings.Split(response.AnswersIDs, " ")
+	for _, srID := range srIDs {
+		id, err := strconv.Atoi(srID)
+		if err != nil {
+			return nil, err
+		}
+		response.SingleResponses = append(response.SingleResponses, &SingleResponse{uint(id)})
+	}
+
+	for _, sr := range response.SingleResponses {
+		var answer Answer
+
+		if err := DB().First(&answer, sr.AnswerID).Error; err != nil {
+			return nil, err
+		}
+
+		if answer.Correct {
+			response.Score++
+		}
+	}
+
 	// Fetch questions in the given order
-	if err := DB().Where("contest_id = ?", response.Contest.ID).Find(&response.Questions).Error; err != nil {
+	if err := DB().Where("contest_id = ?", response.Contest.ID).Preload("Answers").Find(&response.Questions).Error; err != nil {
 		return nil, err
 	}
 
@@ -96,13 +146,6 @@ func (model *Response) Update(args map[string]string, w http.ResponseWriter, r *
 
 		response := result.(*Response)
 
-		// if err := DB().Find(&response.AllElements).Error; err != nil {
-		// 	return nil, err
-		// }
-
-		// response.SelectedElement = make(map[uint]string)
-		// response.SelectedElement[response.ElementID] = "selected"
-
 		return response, nil
 	} else {
 		response, err := model.Read(args, w, r)
diff --git a/templates/responses_add_update.html.tpl b/templates/responses_add_update.html.tpl
index b4c54edd..23d543d4 100644
--- a/templates/responses_add_update.html.tpl
+++ b/templates/responses_add_update.html.tpl
@@ -23,12 +23,12 @@
     role="form"
     id={{$form}}>
 
-    {{range $question := .Data.Questions}}
+    {{range $id,$question := .Data.Questions}}
     <div class="form-group p-3">
       <p class="lead">{{$question.Text}}</p>
       {{range $answer := $question.Answers}}
       <div class="form-check">
-	<input class="form-check-input" type="radio" name="question_{{$question.ID}}" id="answer_{{$answer.ID}}" value="{{$answer.ID}}">
+	<input class="form-check-input" type="radio" name="SingleResponses.{{$id}}" id="answer_{{$answer.ID}}" value="{{$answer.ID}}" required>
 	<label class="form-check-label" for="answer_{{$answer.ID}}">
 	  {{$answer}}
 	</label>
diff --git a/templates/responses_show.html.tpl b/templates/responses_show.html.tpl
index 02075011..5e3c5d3b 100644
--- a/templates/responses_show.html.tpl
+++ b/templates/responses_show.html.tpl
@@ -11,6 +11,14 @@
   <h2 class="karmen-relation-header">Informazioni generali</h2>
   <dl class="row">
     {{if $isAdmin}}
+    <dt class="col-sm-3">Risposte fornite (IDs)</dt>
+    {{if .Data.AnswersIDs}}
+    <dd class="col-sm-9">{{printf "[%v]" .Data.AnswersIDs}}</dd>
+    {{else}}
+    <dd class="col-sm-9">nessuna risposta fornita</dd>
+    {{end}}
+    <dt class="col-sm-3">Punteggio</dt>
+    <dd class="col-sm-9">{{.Data.Score}}</dd>
     {{if $creatorUser:=.Data.CreatedBy}}
     <dt class="col-sm-3">Creato da</dt>
     <dd class="col-sm-9">{{$creatorUser.Username}}[{{$creatorUser.Role}}] {{$.Data.CreatedAt|prettyDateTime}} da {{.Data.CreatorIP}}</dd>