feat(challenge16): di

apps/di/src/app/app.component.ts

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+/* eslint-disable @angular-eslint/directive-selector */
+import { AsyncPipe, NgFor } from '@angular/common';
+import { Component, Directive } from '@angular/core';
+import { TableModule } from 'primeng/table';
+import { CurrencyPipe } from './currency.pipe';
+import { CurrencyService } from './currency.service';
+import { Product, products } from './product.model';
+
+interface ProductContext {
+  $implicit: Product;
+}
+
+@Directive({
+  selector: 'ng-template[pTemplate="body"]',
+  standalone: true,
+})
+export class ProductDirective {
+  static ngTemplateContextGuard(
+    dir: ProductDirective,
+    ctx: unknown
+  ): ctx is ProductContext {
+    return true;
+  }
+}
+
+@Component({
+  standalone: true,
+  imports: [TableModule, CurrencyPipe, AsyncPipe, NgFor, ProductDirective],
+  providers: [CurrencyService],
+  selector: 'app-root',
+  template: `
+    <p-table [value]="products">
+      <ng-template pTemplate="header">
+        <tr>
+          <th *ngFor="let col of displayedColumns">
+            {{ col }}
+          </th>
+        </tr>
+      </ng-template>
+      <ng-template pTemplate="body" let-product>
+        <tr>
+          <td>{{ product.name }}</td>
+          <td>{{ product.priceA | currency | async }}</td>
+          <td>{{ product.priceB | currency | async }}</td>
+          <td>{{ product.priceC | currency | async }}</td>
+        </tr>
+      </ng-template>
+    </p-table>
+  `,
+})
+export class AppComponent {
+  products = products;
+  displayedColumns = ['name', 'priceA', 'priceB', 'priceC'];
+}

apps/di/src/app/currency.pipe.ts

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+import { inject, Pipe, PipeTransform } from '@angular/core';
+import { map } from 'rxjs';
+import { CurrencyService } from './currency.service';
+
+@Pipe({
+  name: 'currency',
+  standalone: true,
+})
+export class CurrencyPipe implements PipeTransform {
+  currencyService = inject(CurrencyService);
+
+  transform(price: number) {
+    return this.currencyService.symbol$.pipe(
+      map((s) => `${String(price)}${s}`)
+    );
+  }
+}

apps/di/src/app/currency.service.ts

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+import { Injectable } from '@angular/core';
+import { ComponentStore } from '@ngrx/component-store';
+import { map } from 'rxjs';
+
+export interface Currency {
+  name: string;
+  code: string;
+  symbol: string;
+}
+
+export const currency: Currency[] = [
+  { name: 'Euro', code: 'EUR', symbol: '€' },
+  { name: 'Dollar US', code: 'USD', symbol: 'US$' },
+  { name: 'Dollar Autralien', code: 'AUD', symbol: 'AU$' },
+  { name: 'Livre Sterling', code: 'GBP', symbol: '£' },
+  { name: 'Dollar Canadien', code: 'CAD', symbol: 'CAD' },
+];
+
+@Injectable()
+export class CurrencyService extends ComponentStore<{ code: string }> {
+  readonly code$ = this.select((state) => state.code);
+  readonly symbol$ = this.code$.pipe(
+    map((code) => currency.find((c) => c.code === code)?.symbol ?? code)
+  );
+
+  constructor() {
+    super({ code: 'EUR' });
+  }
+}

apps/di/src/app/product.model.ts

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+export interface Product {
+  name: string;
+  priceA: number;
+  priceB: number;
+  priceC: number;
+  currencyCode: string;
+}
+
+export const products: Product[] = [
+  {
+    name: 'bike',
+    priceA: 1000,
+    priceB: 2000,
+    priceC: 2200,
+    currencyCode: 'USD',
+  },
+  { name: 'tent', priceA: 112, priceB: 120, priceC: 41, currencyCode: 'EUR' },
+  {
+    name: 'sofa',
+    priceA: 500,
+    priceB: 422,
+    priceC: 5000,
+    currencyCode: 'EUR',
+  },
+  {
+    name: 'watch',
+    priceA: 50,
+    priceB: 130,
+    priceC: 150,
+    currencyCode: 'AUD',
+  },
+  {
+    name: 'computer',
+    priceA: 1000,
+    priceB: 2200,
+    priceC: 3500,
+    currencyCode: 'GBP',
+  },
+  { name: 'mug', priceA: 10, priceB: 15, priceC: 20, currencyCode: 'EUR' },
+  {
+    name: 'headset',
+    priceA: 100,
+    priceB: 150,
+    priceC: 220,
+    currencyCode: 'CAD',
+  },
+  { name: 'cable', priceA: 5, priceB: 10, priceC: 15, currencyCode: 'EUR' },
+  {
+    name: 'table',
+    priceA: 100,
+    priceB: 20,
+    priceC: 500,
+    currencyCode: 'EUR',
+  },
+];

apps/di/src/index.html

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+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <title>Di</title>
+    <base href="/" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <link rel="icon" type="image/x-icon" href="favicon.ico" />
+  </head>
+  <body>
+    <app-root></app-root>
+  </body>
+</html>

apps/di/src/main.ts

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+import { bootstrapApplication } from '@angular/platform-browser';
+import { AppComponent } from './app/app.component';
+
+bootstrapApplication(AppComponent).catch((err) => console.error(err));

apps/di/src/styles.scss

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+/* You can add global styles to this file, and also import other style files */