initial codebase

src/app/home/quote.service.ts

@@ -0,0 +1,30 @@
+import { Injectable } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { Observable, of } from 'rxjs';
+import { map, catchError } from 'rxjs/operators';
+
+const routes = {
+  quote: (c: RandomQuoteContext) => `/jokes/random?category=${c.category}`
+};
+
+export interface RandomQuoteContext {
+  // The quote's category: 'dev', 'explicit'...
+  category: string;
+}
+
+@Injectable()
+export class QuoteService {
+
+  constructor(private httpClient: HttpClient) { }
+
+  getRandomQuote(context: RandomQuoteContext): Observable<string> {
+    return this.httpClient
+      .cache()
+      .get(routes.quote(context))
+      .pipe(
+        map((body: any) => body.value),
+        catchError(() => of('Error, could not load joke :-('))
+      );
+  }
+
+}