Added tracking of a player's state

main.go

@@ -15,6 +15,7 @@ func main() {
 	questions := models.QuestionSet{
 		Questions: []models.Question{
 			{
+				ID:   "1",
 				Text: "What is 1 + 1?",
 				Choices: []models.Choice{
 					{Text: "1"},
@@ -25,6 +26,7 @@ func main() {
 				Fact: "1 + 1 = 2",
 			},
 			{
+				ID:   "2",
 				Text: "What is 3 * 5?",
 				Choices: []models.Choice{
 					{Text: "5"},

models/question.go

@@ -17,6 +17,7 @@ type Choice struct {
 }
 
 type Question struct {
+	ID      string
 	Text    string
 	Choices []Choice
 	Fact    string
@@ -38,6 +39,7 @@ func (q Question) Render() (RenderedQuestion, error) {
 	}
 
 	return RenderedQuestion{
+		ID:          q.ID,
 		Question:    q.Text,
 		Fact:        q.Fact,
 		Choices:     choices,
@@ -51,6 +53,7 @@ type RenderedChoice struct {
 }
 
 type RenderedQuestion struct {
+	ID          string
 	Question    string
 	Fact        string
 	Choices     []RenderedChoice

public/scripts/controllers/clearstate.js

@@ -0,0 +1,9 @@
+import { Controller } from "https://unpkg.com/@hotwired/stimulus/dist/stimulus.js";
+import { gameState } from "./gamestate.js";
+
+export default class extends Controller {
+    startGame(ev) {
+        console.log("Start game");
+        gameState.clearChoices();
+    }
+}

public/scripts/controllers/gamestate.js

@@ -0,0 +1,32 @@
+const GAME_STATE_KEY = "gameState";
+
+class GameState {
+    getQuestionChoice(qId) {
+        let savedItem = this._readGameState();
+        if (qId in savedItem) {
+            return savedItem[qId];
+        }
+        return null;
+    }
+
+    setQuestionChoice(qId, cId) {
+        let savedItem = this._readGameState();
+        savedItem[qId] = cId;
+        localStorage.setItem(GAME_STATE_KEY, JSON.stringify(savedItem));
+    }
+
+    clearChoices() {
+        localStorage.removeItem(GAME_STATE_KEY);
+    }
+
+    _readGameState() {
+        let savedItem = localStorage.getItem(GAME_STATE_KEY);
+        if (savedItem === null) {
+            return {};
+        } else {
+            return JSON.parse(savedItem);
+        }
+    }
+}
+
+export let gameState = new GameState();

public/scripts/controllers/picker.js

@@ -1,30 +1,57 @@
 import { Controller } from "https://unpkg.com/@hotwired/stimulus/dist/stimulus.js";
+import { gameState } from "./gamestate.js";
 
 export default class extends Controller {
-    static targets = ["radio", "answerDetails"];
+    static targets = ["radio", "answerDetails", "submit"];
 
     static values = {
+        qid: String,
         answer: String
     };
 
     connect() {
+        let hasAnswer = gameState.getQuestionChoice(this.qidValue);
+        if (hasAnswer) {
+            this._revealAnswer();
+
+            let e = this.radioTargets.find((e) => e.value == hasAnswer);
+            if (e) {
+                e.checked = true;
+            }
+        }
+    }
+
+    checkRadio(ev) {
+        this.submitTarget.disabled = false;
     }
 
     submitAnswer(ev) {
         ev.preventDefault();
 
+        this.submitTarget.disabled = false;
+        let e = this.radioTargets.find((e) => e.checked);
+        if (!e) {
+            alert("Please select an item");
+            return;
+        }
+
+        gameState.setQuestionChoice(this.qidValue, e.value);
+
+        this.element.classList.add("reveal");
+        window.setTimeout(() => { this._revealAnswer(); });
+    }
+
+    _revealAnswer() {
         this.element.classList.add("reveal");
 
-        window.setTimeout(() => {
-            this.radioTargets.forEach(e => { 
-                e.disabled = true;
-                if (e.value === this.answerValue) {
-                    e.classList.add("answer");
-                } else {
-                    e.classList.add("wrong");
-                }
-            });
-        }, 1);
+        this.radioTargets.forEach(e => { 
+            e.disabled = true;
+            if (e.value === this.answerValue) {
+                e.classList.add("answer");
+            } else {
+                e.classList.add("wrong");
+            }
+        });
 
         this.answerDetailsTarget.classList.remove("hidden");
     }

public/scripts/main.js

@@ -1,7 +1,9 @@
 import { Application } from "https://unpkg.com/@hotwired/stimulus/dist/stimulus.js";
 
+import ClearStateController from "./controllers/clearstate.js";
 import PickerController from "./controllers/picker.js";
 
 window.Stimulus = Application.start();
 
-Stimulus.register("picker", PickerController);
+Stimulus.register("picker", PickerController);
+Stimulus.register("clearstate", ClearStateController);

public/style.css

@@ -24,6 +24,7 @@ label:has(input[type=radio]) {
     font-size: 0.9em;
     font-weight: bold;
     box-sizing: border-box;
+    cursor: pointer;
 }
 
 label:has(input[type=radio]):hover {

views/index.html

@@ -2,4 +2,4 @@
 
 <p>Welcome to the quiz</p>
 
-<a href="{{prefix}}/1">Lets go</a>
+<a data-controller="clearstate" data-action="clearstate#startGame" href="{{prefix}}/1">Lets go</a>

views/layout.html

@@ -6,6 +6,7 @@
     <link rel="stylesheet" href="https://cdn.simplecss.org/simple.min.css">
     <link rel="stylesheet" href="{{prefix}}/assets/style.css">
     <link rel="stylesheet" href="{{prefix}}/assets/fontello/css/fontello.css">
+    <script src="{{prefix}}/assets/scripts/main.js" type="module"></script>
 </head>
 <body>
     {{embed}}

views/question.html

@@ -3,12 +3,13 @@
     <i class="icon-ok"></i>
 </div>
     
-<div class="question" data-controller="picker" data-picker-answer-value="{{.q.RightChoice}}">
+<div class="question" data-controller="picker" 
+    data-picker-qid-value="{{.q.ID}}" data-picker-answer-value="{{.q.RightChoice}}">
     <p>{{.q.Question}}</p>
 
     {{range .q.Choices}}
     <label>
-        <input type="radio" name="ans" value="{{.ID}}" data-picker-target="radio">
+        <input type="radio" name="ans" value="{{.ID}}" data-picker-target="radio" data-action="picker#checkRadio">
         {{if eq .ID $.q.RightChoice}}
             <i class="icon-ok"></i>
         {{else}}
@@ -18,7 +19,7 @@
     </label>
     {{end}}
 
-    <button data-action="picker#submitAnswer">Submit</button>
+    <button disabled data-picker-target="submit" data-action="picker#submitAnswer">Submit</button>
 
     <div data-picker-target="answerDetails" class="hidden">
         <p>{{.q.Fact}}</p>
@@ -26,6 +27,4 @@
             <a href="{{.nextURL}}">Next</a>
         </div>
     </div>
-</div>
-
-<script src="{{prefix}}/assets/scripts/main.js" type="module"></script>
+</div>