cange

README.md

@@ -57,3 +57,16 @@ Angular CLI does not come with an end-to-end testing framework by default. You c
 ## Additional Resources
 
 For more information on using the Angular CLI, including detailed command references, visit the [Angular CLI Overview and Command Reference](https://angular.dev/tools/cli) page.
+
+## Séquence 2 – Logique réactive du flux de données
+### 1. Structure du flux
+- Le service `TaskService` utilise un **BehaviorSubject** pour stocker et diffuser la liste des tâches.
+- Le composant `Home` s’abonne à ce flux via `tasks$` et le **pipe async**.
+### 2. Mise à jour des données
+- La méthode `addTask()` ajoute une tâche puis appelle `next()` pour émettre la nouvelle liste.
+- La méthode `removeTask()` supprime une tâche puis émet à nouveau la liste mise à jour.
+- La vue est automatiquement réactualisée sans rechargement.
+### 3. Points clés retenus
+- Pas besoin d’appeler `getTasks()` à chaque fois : la donnée est **vivante**.
+- `| async` gère l’abonnement et le désabonnement automatiquement.
+- Le flux reste cohérent entre le service et la vue.

angular.json

@@ -11,7 +11,7 @@
       "prefix": "app",
       "architect": {
         "build": {
-          "builder": "@angular-devkit/build-angular:application",
+          "builder": "@angular/build:application",
           "options": {
             "outputPath": "dist/task-board",
             "index": "src/index.html",
@@ -56,7 +56,7 @@
           "defaultConfiguration": "production"
         },
         "serve": {
-          "builder": "@angular-devkit/build-angular:dev-server",
+          "builder": "@angular/build:dev-server",
           "configurations": {
             "production": {
               "buildTarget": "TaskBoard:build:production"
@@ -68,10 +68,10 @@
           "defaultConfiguration": "development"
         },
         "extract-i18n": {
-          "builder": "@angular-devkit/build-angular:extract-i18n"
+          "builder": "@angular/build:extract-i18n"
         },
         "test": {
-          "builder": "@angular-devkit/build-angular:karma",
+          "builder": "@angular/build:karma",
           "options": {
             "polyfills": [
               "zone.js",
@@ -95,5 +95,31 @@
   },
   "cli": {
     "analytics": false
+  },
+  "schematics": {
+    "@schematics/angular:component": {
+      "type": "component"
+    },
+    "@schematics/angular:directive": {
+      "type": "directive"
+    },
+    "@schematics/angular:service": {
+      "type": "service"
+    },
+    "@schematics/angular:guard": {
+      "typeSeparator": "."
+    },
+    "@schematics/angular:interceptor": {
+      "typeSeparator": "."
+    },
+    "@schematics/angular:module": {
+      "typeSeparator": "."
+    },
+    "@schematics/angular:pipe": {
+      "typeSeparator": "."
+    },
+    "@schematics/angular:resolver": {
+      "typeSeparator": "."
+    }
   }
 }

package.json

@@ -10,21 +10,21 @@
   },
   "private": true,
   "dependencies": {
-    "@angular/common": "^19.2.0",
-    "@angular/compiler": "^19.2.0",
-    "@angular/core": "^19.2.0",
-    "@angular/forms": "^19.2.0",
-    "@angular/platform-browser": "^19.2.0",
-    "@angular/platform-browser-dynamic": "^19.2.0",
-    "@angular/router": "^19.2.0",
+    "@angular/common": "^21.0.1",
+    "@angular/compiler": "^21.0.1",
+    "@angular/core": "^21.0.1",
+    "@angular/forms": "^21.0.1",
+    "@angular/platform-browser": "^21.0.1",
+    "@angular/platform-browser-dynamic": "^21.0.1",
+    "@angular/router": "^21.0.1",
     "rxjs": "~7.8.0",
     "tslib": "^2.3.0",
     "zone.js": "~0.15.0"
   },
   "devDependencies": {
-    "@angular-devkit/build-angular": "^19.2.11",
-    "@angular/cli": "^19.2.11",
-    "@angular/compiler-cli": "^19.2.0",
+    "@angular/build": "^21.0.0",
+    "@angular/cli": "^21.0.0",
+    "@angular/compiler-cli": "^21.0.1",
     "@types/jasmine": "~5.1.0",
     "jasmine-core": "~5.6.0",
     "karma": "~6.4.0",
@@ -32,6 +32,6 @@
     "karma-coverage": "~2.2.0",
     "karma-jasmine": "~5.1.0",
     "karma-jasmine-html-reporter": "~2.1.0",
-    "typescript": "~5.7.2"
+    "typescript": "~5.9.3"
   }
 }

src/app/component/home/home.component.html

@@ -1 +1,19 @@
-<p>home works!</p>
+<h1>Home works!</h1>
+
+<h2>Task List</h2>
+@if (tasks$ | async; as tasks) {
+  <ul>
+    @for (task of tasks; track task) {
+      <li>
+        {{ task.title }}
+      </li>
+    }
+  </ul>
+} @else {
+  <p>Loading tasks...</p>
+}
+
+<p>Elapsed time: <span style="font-family:monospace;font-size:1.2em">{{ elapsedClock }}</span></p>
+
+<!-- Add a task -->
+<button (click)="addTask('New Task')">+ Add a task</button>

src/app/component/home/home.component.ts

@@ -1,11 +1,45 @@
-import { Component } from '@angular/core';
+
+import { Component, inject } from '@angular/core';
+import { CommonModule, AsyncPipe } from '@angular/common';
+import { TaskService } from '../../service/task.service';
 
 @Component({
   selector: 'app-home',
-  imports: [],
+  imports: [CommonModule, AsyncPipe],
   templateUrl: './home.component.html',
   styleUrl: './home.component.css'
 })
 export class HomeComponent {
+  protected count = 0;
+  private intervalId: any;
+  public elapsedClock: string = '';
 
+  private taskService = inject(TaskService);
+  tasks$ = this.taskService.tasks$;
+
+  ngOnInit() {
+    this.updateElapsedClock();
+    this.intervalId = setInterval(() => {
+      this.count++;
+      this.updateElapsedClock();
+    }, 500);
+  }
+
+  ngOnDestroy() {
+    if (this.intervalId) {
+      clearInterval(this.intervalId);
+    }
+  }
+
+  private updateElapsedClock() {
+    const totalSeconds = Math.floor(this.count / 2);
+    const h = String(Math.floor(totalSeconds / 3600)).padStart(2, '0');
+    const m = String(Math.floor((totalSeconds % 3600) / 60)).padStart(2, '0');
+    const s = String(totalSeconds % 60).padStart(2, '0');
+    this.elapsedClock = `${h}:${m}:${s}`;
+  }
+
+  addTask(title: string) {
+    this.taskService.addTask(title);
+  }
 }

src/app/service/task.service.spec.ts

@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing';
+
+import { TaskService } from './task.service';
+
+describe('TaskService', () => {
+  let service: TaskService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(TaskService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});

src/app/service/task.service.ts

@@ -0,0 +1,28 @@
+import { Injectable } from '@angular/core';
+import { BehaviorSubject, of } from 'rxjs';
+import { delay } from 'rxjs/operators';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class TaskService {
+  private tasks = [
+    { id: 1, title: 'Sample Task' },
+    { id: 2, title: 'Another Task' },
+    { id: 3, title: 'More Tasks' }
+  ];
+  private nextId = this.tasks.length > 0 ? Math.max(...this.tasks.map(t => t.id)) + 1 : 1;
+
+  getTasks() {
+    return of(this.tasks).pipe(delay(1000));
+  }
+
+  private tasksSubject = new BehaviorSubject(this.tasks);
+  tasks$ = this.tasksSubject.asObservable();
+
+  addTask(title: string) {
+    const newTask = { id: this.nextId++, title: title.trim() };
+    this.tasks.push(newTask);
+    this.tasksSubject.next([...this.tasks]);
+  }
+}