feat: adds Evan's media items data loader (#357)

* feat: added evan_philakhong_loader.ts

* fix: removed line 24

* fix: loader name

* feat: added provider to loaders.module.ts

* fix: mediaItem arguments

* WIP: extra credit

---------

Co-authored-by: Anthony D. Mays <[email protected]>

Author: TatsuyaRyujin

lesson_10/libraries/src/loaders/evan_philakhong_loader.ts

@@ -0,0 +1,46 @@
+import csv from 'csv-parser';
+import fs from 'fs';
+import { Credit, MediaItem } from '../models/index.js';
+import { Loader } from './loader.js';
+
+export class EvanPhilakhongLoader implements Loader {
+  getLoaderName(): string {
+    return 'evanphilakhong';
+  }
+
+  async loadData(): Promise<MediaItem[]> {
+    const credits = await this.loadCredits();
+    const mediaItems = await this.loadMediaItems();
+
+    console.log(
+      `Loaded ${credits.length} credits and ${mediaItems.length} media items`,
+    );
+
+    return [...mediaItems.values()];
+  }
+
+  async loadMediaItems(): Promise<MediaItem[]> {
+    const mediaItems = [];
+    const readable = fs
+      .createReadStream('data/media_items.csv', 'utf-8')
+      .pipe(csv());
+    for await (const row of readable) {
+      const { id, type, title, year } = row;
+      mediaItems.push(new MediaItem(id, title, type, year, []));
+    }
+
+    return mediaItems;
+  }
+
+  async loadCredits(): Promise<Credit[]> {
+    const credits = [];
+    const readable = fs
+      .createReadStream('data/credits.csv', 'utf-8')
+      .pipe(csv());
+    for await (const row of readable) {
+      const { media_item_id, role, name } = row;
+      credits.push(new Credit(media_item_id, name, role));
+    }
+    return credits;
+  }
+}

lesson_10/libraries/src/loaders/loaders.module.ts

@@ -14,6 +14,7 @@ import { KarenAlabiLoader } from './karen_alabi_loader.js';
 import { MercedesMathewsLoader } from './mercedes_mathews_loader.js';
 import { RasheedMillerLoader } from './rasheed_miller_loader.js';
 import { MontezBLoader } from './montez_b_loaders.js';
+import { EvanPhilakhongLoader } from './evan_philakhong_loader.js';
 import { JasonWatsonLoader } from './jason_watson_loader.js';
 import { OliviaJamesLoader } from './olivia_james_loader.js';
 
@@ -30,6 +31,7 @@ const LOADER_PROVIDERS = [
   JBeyLoader,
   JustinEklundLoader,
   MercedesMathewsLoader,
+  EvanPhilakhongLoader,
   JasonWatsonLoader,
   KarenAlabiLoader,
   RasheedMillerLoader,