refactor: move libs

apps/testing/17-router/src/app/app.component.cy.ts

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+import { AppComponent } from './app.component';
+
+describe(AppComponent.name, () => {
+  describe('Given no search criteria', () => {
+    it('Then shows error message and disabled button', () => {
+      //todo
+    });
+  });
+
+  describe('Given a search criteria with no book match', () => {
+    it('Then shows No book found', () => {
+      //todo
+    });
+  });
+
+  describe('Given a search criteria with one book match', () => {
+    it('Then shows One book and no error', () => {
+      //todo
+    });
+  });
+
+  describe('Given a search criteria in Uppercase with one book match', () => {
+    it('Then shows One book and no error', () => {
+      //todo
+    });
+  });
+
+  describe('Given a search criteria with multple books matches', () => {
+    it('Then shows a list of books', () => {
+      //todo
+    });
+  });
+});

apps/testing/17-router/src/app/app.component.spec.ts

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+describe('AppComponent', () => {
+  describe('Given no search criteria', () => {
+    it('Then shows error message and disabled button', async () => {
+      //todo
+    });
+  });
+
+  describe('Given a search criteria with no book match', () => {
+    it('Then shows No book found', async () => {
+      //todo
+    });
+  });
+
+  describe('Given a search criteria with one book match', () => {
+    it('Then shows One book and no error', async () => {
+      //todo
+    });
+  });
+
+  describe('Given a search criteria in Uppercase with one book match', () => {
+    it('Then shows One book and no error', async () => {
+      //todo
+    });
+  });
+
+  describe('Given a search criteria with multple books matches', () => {
+    it('Then shows a list of books', async () => {
+      //todo
+    });
+  });
+});

apps/testing/17-router/src/app/app.component.ts

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+import { Component } from '@angular/core';
+import { RouterLink, RouterOutlet } from '@angular/router';
+
+@Component({
+  standalone: true,
+  imports: [RouterOutlet, RouterLink],
+  selector: 'app-root',
+  styles: [
+    `
+      h1 {
+        margin-bottom: 0;
+      }
+      nav a {
+        padding: 1rem;
+        text-decoration: none;
+        margin-top: 10px;
+        display: inline-block;
+        background-color: #e8e8e8;
+        color: #3d3d3d;
+        border-radius: 4px;
+        margin-bottom: 10px;
+      }
+      nav a:hover {
+        color: white;
+        background-color: #42545c;
+      }
+      nav a.active {
+        background-color: black;
+      }
+    `,
+  ],
+  template: `
+    <h1>Library</h1>
+
+    <nav>
+      <a routerLink="/search" routerLinkActive="active">Borrow a Book</a>
+    </nav>
+
+    <router-outlet />
+  `,
+})
+export class AppComponent {}

apps/testing/17-router/src/app/app.config.ts

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+import { ApplicationConfig } from '@angular/core';
+import { provideRouter } from '@angular/router';
+import { appRoutes } from './app.routes';
+export const appConfig: ApplicationConfig = {
+  providers: [provideRouter(appRoutes)],
+};

apps/testing/17-router/src/app/app.routes.ts

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+import { ActivatedRouteSnapshot, Route } from '@angular/router';
+import { bookGuard } from './book.guard';
+
+export const appRoutes: Route[] = [
+  {
+    path: '',
+    pathMatch: 'full',
+    redirectTo: 'search',
+  },
+  {
+    path: 'search',
+    loadComponent: () => import('./search.component'),
+  },
+  {
+    path: 'shelf',
+    canActivate: [(route: ActivatedRouteSnapshot) => bookGuard(route)],
+    loadComponent: () => import('./shelf.component'),
+  },
+  {
+    path: 'no-result',
+    loadComponent: () => import('./no-book-search.component'),
+  },
+  {
+    path: '**',
+    pathMatch: 'full',
+    redirectTo: 'search',
+  },
+];

apps/testing/17-router/src/app/book.guard.ts

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+import { inject } from '@angular/core';
+import { ActivatedRouteSnapshot, Router } from '@angular/router';
+import { availableBooks } from './book.model';
+
+export const bookGuard = (
+  route: ActivatedRouteSnapshot,
+  router = inject(Router),
+) => {
+  const searchParam = route.queryParams?.['book'].toLowerCase();
+
+  const isBookAvailable =
+    !!searchParam &&
+    availableBooks.some(
+      (b) =>
+        b.author.toLowerCase().includes(searchParam) ||
+        b.name.toLowerCase().includes(searchParam),
+    );
+
+  return isBookAvailable || router.parseUrl('no-result');
+};

apps/testing/17-router/src/app/book.model.ts

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+export interface Book {
+  name: string;
+  author: string;
+}
+
+export const availableBooks = [
+  { name: 'To Kill a Mockingbird', author: 'Harper Lee' },
+  { name: '1984', author: 'George Orwell' },
+  { name: 'The Catcher in the Rye', author: 'J.D. Salinger' },
+  { name: 'The Great Gats', author: 'F. Scott Fitzgerald' },
+  { name: 'Pride and Prejudice', author: 'Jane Austen' },
+  { name: 'The Hobbit', author: 'J.R.R. Tolkien' },
+  { name: 'The Lord of the Rings', author: 'J.R.R. Tolkien' },
+  { name: "Harry Potter and the Philosopher's Stone", author: 'J.K. Rowling' },
+  { name: 'The Hunger Games', author: 'Suzanne Collins' },
+  { name: 'Animal Farm', author: 'George Orwell' },
+];

apps/testing/17-router/src/app/no-book-search.component.ts

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+import { ChangeDetectionStrategy, Component } from '@angular/core';
+
+@Component({
+  standalone: true,
+  template: `
+    <div>No book found for this search</div>
+  `,
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export default class ShelfComponent {}

apps/testing/17-router/src/app/search.component.ts

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+import { NgFor, NgIf } from '@angular/common';
+import { ChangeDetectionStrategy, Component } from '@angular/core';
+import { FormControl, ReactiveFormsModule, Validators } from '@angular/forms';
+import { RouterLink } from '@angular/router';
+import { availableBooks } from './book.model';
+
+@Component({
+  standalone: true,
+  imports: [ReactiveFormsModule, RouterLink, NgFor, NgIf],
+  styles: [
+    `
+      :host {
+        display: flex;
+        flex-direction: column;
+        gap: 10px;
+      }
+
+      .error {
+        color: red;
+      }
+
+      button {
+        width: 300px;
+        padding: 5px;
+        border-radius: 5px;
+      }
+
+      .search label {
+        margin-right: 15px;
+      }
+    `,
+  ],
+  template: `
+    <div class="search">
+      <label for="bookName">Search Book by author or title</label>
+      <input
+        type="text"
+        id="bookName"
+        name="bookName"
+        [formControl]="searchBook"
+        required />
+      <div class="error" *ngIf="searchBook.errors">
+        Search criteria is required!
+      </div>
+    </div>
+    <button
+      data-cy="borrow-btn"
+      routerLink="/shelf"
+      [queryParams]="{ book: searchBook.value }"
+      [disabled]="searchBook.errors"
+      routerLinkActive="router-link-active">
+      Borrow
+    </button>
+    <div>
+      <h3>List of books available:</h3>
+      <ul>
+        <li *ngFor="let book of books">{{ book.name }} by {{ book.author }}</li>
+      </ul>
+    </div>
+  `,
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export default class SearchComponent {
+  searchBook = new FormControl('', Validators.required);
+  books = availableBooks;
+}

apps/testing/17-router/src/app/shelf.component.ts

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+import { AsyncPipe, JsonPipe, NgFor } from '@angular/common';
+import { ChangeDetectionStrategy, Component, inject } from '@angular/core';
+import { ActivatedRoute } from '@angular/router';
+import { map } from 'rxjs';
+import { availableBooks } from './book.model';
+
+@Component({
+  selector: 'app-shelf',
+  standalone: true,
+  imports: [AsyncPipe, JsonPipe, NgFor],
+  template: `
+    <ul>
+      <li *ngFor="let book of books | async">
+        Borrowed Book: {{ book.name }} by {{ book.author }}
+      </li>
+    </ul>
+  `,
+  styles: [],
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export default class ShelfComponent {
+  readonly books = inject(ActivatedRoute).queryParams.pipe(
+    map((params) => params?.['book'].toLowerCase()),
+    map((param) =>
+      availableBooks.filter(
+        (b) =>
+          b.name.toLowerCase().includes(param) ||
+          b.author.toLowerCase().includes(param),
+      ),
+    ),
+  );
+}