Fin section 14 et 15 : programmation réactive et requêtes HTTP

package.json

@@ -25,6 +25,13 @@
     "@angular-devkit/build-angular": "^15.1.5",
     "@angular/cli": "~15.1.5",
     "@angular/compiler-cli": "^15.1.0",
+    "angular-in-memory-web-api": "^0.15.0",
+    "cz-conventional-changelog": "^3.3.0",
     "typescript": "~4.9.4"
+  },
+  "config": {
+    "commitizen": {
+      "path": "./node_modules/cz-conventional-changelog"
+    }
   }
 }

src/app/app.module.ts

@@ -1,15 +1,27 @@
 import { NgModule } from '@angular/core';
 import { FormsModule } from '@angular/forms';
 import { BrowserModule } from '@angular/platform-browser';
+import { HttpClientModule } from '@angular/common/http';
+import { HttpClientInMemoryWebApiModule } from 'angular-in-memory-web-api';
 
 import { AppRoutingModule } from './app-routing.module';
 import { AppComponent } from './app.component';
 import { PageNotFoundComponent } from './page-not-found/page-not-found.component';
 import { PokemonModule } from './pokemon/pokemon.module';
+import { InMemoryDataService } from './in-memory-data.service';
 
 @NgModule({
   declarations: [AppComponent, PageNotFoundComponent],
-  imports: [BrowserModule, FormsModule, PokemonModule, AppRoutingModule],
+  imports: [
+    BrowserModule,
+    FormsModule,
+    HttpClientModule,
+    HttpClientInMemoryWebApiModule.forRoot(InMemoryDataService, {
+      dataEncapsulation: false,
+    }),
+    PokemonModule,
+    AppRoutingModule,
+  ],
   providers: [],
   bootstrap: [AppComponent],
 })

src/app/in-memory-data.service.ts

@@ -0,0 +1,15 @@
+import { Injectable } from '@angular/core';
+import { InMemoryDbService } from 'angular-in-memory-web-api';
+import { POKEMONS } from './pokemon/mock-pokemon-list';
+
+@Injectable({
+  providedIn: 'root',
+})
+export class InMemoryDataService implements InMemoryDbService {
+  createDb() {
+    const pokemons = POKEMONS;
+    return { pokemons };
+  }
+
+  constructor() {}
+}

src/app/pokemon/add-pokemon/add-pokemon.component.html

@@ -0,0 +1,2 @@
+<h2 class="center">Ajouter un pokémon</h2>
+<app-pokemon-form [pokemon]="pokemon"></app-pokemon-form>

src/app/pokemon/add-pokemon/add-pokemon.component.ts

@@ -0,0 +1,15 @@
+import { Component, OnInit } from '@angular/core';
+import { Pokemon } from '../pokemon';
+
+@Component({
+  selector: 'app-add-pokemon',
+  templateUrl: './add-pokemon.component.html',
+  styles: [],
+})
+export class AddPokemonComponent implements OnInit {
+  pokemon: Pokemon;
+
+  ngOnInit() {
+    this.pokemon = new Pokemon();
+  }
+}

src/app/pokemon/detail-pokemon/detail-pokemon.component.html

@@ -49,6 +49,7 @@
         <div class="card-action">
           <a (click)="goToPokemonList()">Retour</a>
           <a (click)="goToEditPokemon(pokemon)">Modifier</a>
+          <a (click)="deletePokemon(pokemon)">Supprimer</a>
         </div>
       </div>
     </div>

src/app/pokemon/detail-pokemon/detail-pokemon.component.ts

@@ -19,10 +19,18 @@ export class DetailPokemonComponent implements OnInit {
   ngOnInit(): void {
     const pokemonId: string | null = this.route.snapshot.paramMap.get('id');
     if (pokemonId) {
-      this.pokemon = this.pokemonService.getPokemonById(+pokemonId);
+      this.pokemonService
+        .getPokemonById(+pokemonId)
+        .subscribe((pokemon) => (this.pokemon = pokemon));
     }
   }
 
+  deletePokemon(pokemon: Pokemon) {
+    this.pokemonService
+      .deletePokemonById(pokemon)
+      .subscribe(() => this.goToPokemonList());
+  }
+
   goToPokemonList() {
     this.router.navigate(['/pokemons']);
   }

src/app/pokemon/edit-pokemon/edit-pokemon.component.ts

@@ -19,7 +19,9 @@ export class EditPokemonComponent implements OnInit {
   ngOnInit() {
     const pokemonId: string | null = this.route.snapshot.paramMap.get('id');
     if (pokemonId) {
-      this.pokemon = this.pokemonService.getPokemonById(+pokemonId);
+      this.pokemonService
+        .getPokemonById(+pokemonId)
+        .subscribe((pokemon) => (this.pokemon = pokemon));
     }
   }
 }

src/app/pokemon/list-pokemon/list-pokemon.component.html

@@ -29,3 +29,9 @@
     </div>
   </div>
 </div>
+<a
+  class="btn-floating btn-large waves-effect waves-ligth red z-depth-3"
+  style="position: fixed; bottom: 25px; right: 25px"
+  routerLink="/pokemon/add"
+  >➕</a
+>

src/app/pokemon/list-pokemon/list-pokemon.component.ts

@@ -13,7 +13,9 @@ export class ListPokemonComponent implements OnInit {
   constructor(private router: Router, private pokemonService: PokemonService) {}
 
   ngOnInit() {
-    this.pokemonList = this.pokemonService.getPokemonList();
+    this.pokemonService
+      .getPokemonList()
+      .subscribe((pokemonList) => (this.pokemonList = pokemonList));
   }
 
   goToPokemon(pokemon: Pokemon) {

src/app/pokemon/pokemon-form/pokemon-form.component.html

@@ -24,6 +24,27 @@
           </div>
         </div>
 
+        <!-- Pokemon picture -->
+        <div *ngIf="isAddForm" class="form-group">
+          <label for="name">Image</label>
+          <input
+            type="url"
+            class="form-control"
+            id="picture"
+            required
+            [(ngModel)]="pokemon.picture"
+            name="picture"
+            #picture="ngModel"
+          />
+
+          <div
+            [hidden]="picture.valid || picture.pristine"
+            class="card-panel red accent-1"
+          >
+            L’image du pokémon est requise.
+          </div>
+        </div>
+
         <!-- Pokemon hp -->
         <div class="form-group">
           <label for="hp">Point de vie</label>

src/app/pokemon/pokemon-form/pokemon-form.component.ts

@@ -11,11 +11,15 @@ import { PokemonService } from '../pokemon.service';
 export class PokemonFormComponent implements OnInit {
   @Input() pokemon: Pokemon;
   types: string[];
+  isAddForm: boolean;
 
   constructor(private pokemonService: PokemonService, private router: Router) {}
 
   ngOnInit(): void {
-    this.types = this.pokemonService.getPokemonTypeList();
+    this.pokemonService
+      .getPokemonTypeList()
+      .subscribe((types) => (this.types = types));
+    this.isAddForm = this.router.url.includes('add');
   }
 
   hasType(type: string) {
@@ -33,8 +37,17 @@ export class PokemonFormComponent implements OnInit {
   }
 
   onSubmit() {
-    console.log('Submit form!');
-    this.router.navigate(['/pokemon', this.pokemon.id]);
+    if (this.isAddForm) {
+      this.pokemonService
+        .addPokemon(this.pokemon)
+        .subscribe((pokemon: Pokemon) => {
+          this.router.navigate(['/pokemon', pokemon.id]);
+        });
+    } else {
+      this.pokemonService.updatePokemon(this.pokemon).subscribe(() => {
+        this.router.navigate(['/pokemon', this.pokemon.id]);
+      });
+    }
   }
 
   isTypesValid(type: string): boolean {

src/app/pokemon/pokemon.module.ts

@@ -10,9 +10,11 @@ import { PokemonService } from './pokemon.service';
 import { FormsModule } from '@angular/forms';
 import { PokemonFormComponent } from './pokemon-form/pokemon-form.component';
 import { EditPokemonComponent } from './edit-pokemon/edit-pokemon.component';
+import { AddPokemonComponent } from './add-pokemon/add-pokemon.component';
 
 const pokemonRoutes: Routes = [
   { path: 'edit/pokemon/:id', component: EditPokemonComponent },
+  { path: 'pokemon/add', component: AddPokemonComponent },
   { path: 'pokemon/:id', component: DetailPokemonComponent },
   { path: 'pokemons', component: ListPokemonComponent },
 ];
@@ -25,6 +27,7 @@ const pokemonRoutes: Routes = [
     DetailPokemonComponent,
     PokemonFormComponent,
     EditPokemonComponent,
+    AddPokemonComponent,
   ],
   imports: [CommonModule, FormsModule, RouterModule.forChild(pokemonRoutes)],
   providers: [PokemonService],

src/app/pokemon/pokemon.service.ts

@@ -1,22 +1,74 @@
+import { HttpClient, HttpHeaders } from '@angular/common/http';
 import { Injectable } from '@angular/core';
-import { POKEMONS } from './mock-pokemon-list';
+import { catchError, mergeMap, Observable, of, tap } from 'rxjs';
 import { Pokemon } from './pokemon';
 
 @Injectable()
 export class PokemonService {
-  getPokemonList(): Pokemon[] {
-    return POKEMONS;
+  constructor(private http: HttpClient) {}
+
+  getPokemonList(): Observable<Pokemon[]> {
+    return this.http.get<Pokemon[]>('api/pokemons').pipe(
+      tap((pokemonList) => this.log(pokemonList)),
+      catchError((error) => this.handleError(error, []))
+    );
+  }
+
+  getPokemonById(pokemonId: number): Observable<Pokemon | undefined> {
+    return this.http.get<Pokemon>(`api/pokemons/${pokemonId}`).pipe(
+      tap((pokemon) => this.log(pokemon)),
+      catchError((error) => this.handleError(error, undefined))
+    );
+  }
+
+  getPokemonTypeList(): Observable<string[]> {
+    return this.http.get<Pokemon[]>('api/pokemons').pipe(
+      mergeMap((pokemons: Pokemon[]) => {
+        const set = new Set<string>();
+        pokemons.forEach((pokemon) =>
+          pokemon.types.forEach((type) => set.add(type))
+        );
+        return [Array.from(set.values())];
+      }),
+      tap((pokemon) => this.log(pokemon)),
+      catchError((error) => this.handleError(error, []))
+    );
+  }
+
+  updatePokemon(pokemon: Pokemon): Observable<null> {
+    const httpOptions = {
+      headers: new HttpHeaders({ 'Content-Type': 'application/json' }),
+    };
+    return this.http.put('api/pokemons', pokemon, httpOptions).pipe(
+      tap((response) => this.log(response)),
+      catchError((error) => this.handleError(error, null))
+    );
+  }
+
+  addPokemon(pokemon: Pokemon): Observable<Pokemon> {
+    const httpOptions = {
+      headers: new HttpHeaders({ 'Content-Type': 'application/json' }),
+    };
+
+    return this.http.post<Pokemon>('api/pokemons', pokemon, httpOptions).pipe(
+      tap((response) => this.log(response)),
+      catchError((error) => this.handleError(error, null))
+    );
+  }
+
+  deletePokemonById(pokemon: Pokemon): Observable<null> {
+    return this.http.delete(`api/pokemons/${pokemon.id}`).pipe(
+      tap((response) => this.log(response)),
+      catchError((error) => this.handleError(error, null))
+    );
   }
 
-  getPokemonById(pokemonId: number): Pokemon | undefined {
-    return POKEMONS.find((pokemon) => pokemon.id === pokemonId);
+  private log(response: any) {
+    console.table(response);
   }
 
-  getPokemonTypeList(): string[] {
-    const types: Set<string> = new Set();
-    POKEMONS.forEach((pokemon) => {
-      pokemon.types.forEach((type) => types.add(type));
-    });
-    return Array.from(types.values());
+  private handleError(error: Error, errorValue: any) {
+    console.error(error);
+    return of(errorValue);
   }
 }

src/app/pokemon/pokemon.ts

@@ -1,9 +1,25 @@
 export class Pokemon {
   id: number;
+  name: string;
   hp: number;
   cp: number;
-  name: string;
   picture: string;
   types: Array<string>;
   created: Date;
+
+  constructor(
+    name: string = 'Enter a name...',
+    hp: number = 100,
+    cp: number = 10,
+    picture: string = 'https://assets.pokemon.com/assets/cms2/img/pokedex/detail/xxx.png',
+    types: string[] = ['Normal'],
+    created: Date = new Date()
+  ) {
+    this.hp = hp;
+    this.cp = cp;
+    this.name = name;
+    this.picture = picture;
+    this.types = types;
+    this.created = created;
+  }
 }