feat: challage 38 - rxjs catch error

apps/rxjs-catch-error/src/app/app.component.ts

@@ -0,0 +1,79 @@
+import { Component, ElementRef, ViewChild } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { concatMap, fromEvent, map } from 'rxjs';
+import { CommonModule } from '@angular/common';
+
+@Component({
+  standalone: true,
+  imports: [CommonModule],
+  selector: 'app-root',
+  template: `
+    <div class="form-container">
+      <span>Posible values: posts, comments, albums, photos, todos, users</span>
+    </div>
+    <div class="form-container">
+      <input #inputRef type="text" placeholder="Enter text" />
+      <button #buttonRef>Fetch</button>
+    </div>
+    <div class="form-container">
+      {{ response | json }}
+    </div>
+  `,
+  styles: [
+    `
+      body {
+        font-family: Arial, sans-serif;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        height: 100vh;
+        margin: 0;
+      }
+      .form-container {
+        text-align: center;
+      }
+      input {
+        padding: 8px;
+        margin-right: 8px;
+        border: 1px solid #ccc;
+        border-radius: 4px;
+      }
+      button {
+        padding: 8px 16px;
+        background-color: #007bff;
+        color: #fff;
+        border: none;
+        border-radius: 4px;
+        cursor: pointer;
+      }
+    `,
+  ],
+})
+export class AppComponent {
+  @ViewChild('buttonRef', { static: true }) buttonRef!: ElementRef;
+  @ViewChild('inputRef', { static: true }) inputRef!: ElementRef;
+  response: unknown;
+  constructor(private http: HttpClient) {}
+
+  ngOnInit() {
+    const buttonClick$ = fromEvent(this.buttonRef.nativeElement, 'click');
+    buttonClick$
+      .pipe(
+        map(() => this.inputRef.nativeElement.value),
+        concatMap((value) =>
+          this.http.get(`https://jsonplaceholder.typicode.com/${value}/1`)
+        )
+      )
+      .subscribe({
+        next: (value) => {
+          console.log(value);
+          this.response = value;
+        },
+        error: (error) => {
+          console.log(error);
+          this.response = error;
+        },
+        complete: () => console.log('done'),
+      });
+  }
+}