fix: added name and loader file for Chelsea

lesson_10/libraries/src/loaders/chelsea_ogbonnia_loader.ts

@@ -0,0 +1,86 @@
+import csv from 'csv-parser';
+import fs from 'fs';
+import { Credit, MediaItem, MediaType } from '../models/index.js';
+import { Loader } from './loader.js';
+
+export class ChelseaOgbonniaLoader implements Loader {
+  getLoaderName(): string {
+    return 'chesleaogbonnia';
+  }
+
+  async loadData(): Promise<MediaItem[]> {
+    const credits = await this.loadCredits();
+    const mediaItems = await this.loadMediaItems();
+
+    const creditsMap: Record<string, Credit[]> = {};
+
+    credits.forEach((credit) => {
+      const mediaItemId = credit.getMediaItemId();
+      if (!creditsMap[mediaItemId]) {
+        creditsMap[mediaItemId] = [];
+      }
+      creditsMap[mediaItemId].push(credit);
+    });
+
+    mediaItems.forEach((mediaItem) => {
+      const mediaItemId = mediaItem.getId();
+      const associatedCredits = creditsMap[mediaItemId] || [];
+
+      associatedCredits.forEach((credit) => mediaItem.addCredit(credit));
+    });
+
+    console.log(
+      `Loaded ${credits.length} credits and ${mediaItems.length} media items`,
+    );
+
+    return mediaItems;
+  }
+
+  async loadMediaItems(): Promise<MediaItem[]> {
+    const mediaItems: MediaItem[] = [];
+    const readable = fs
+      .createReadStream('data/media_items.csv', 'utf-8')
+      .pipe(csv());
+
+    for await (const row of readable) {
+      const { id, type, title, year } = row;
+      let mediaType: MediaType | undefined;
+      switch (type) {
+        case 'movie':
+          mediaType = MediaType.Movie;
+          break;
+        case 'tv_show':
+          mediaType = MediaType.TVShow;
+          break;
+        case 'documentary':
+          mediaType = MediaType.Documentary;
+          break;
+        default:
+          throw new Error(`Unknown media type: ${type}`);
+      }
+      const releaseYear = Number(year);
+      const mediaItem = new MediaItem(
+        String(id),
+        title,
+        mediaType,
+        releaseYear,
+        [],
+      );
+      mediaItems.push(mediaItem);
+    }
+    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: mediaItemId, role, name } = row;
+      const credit = new Credit(mediaItemId, name, role);
+      credits.push(credit);
+    }
+    return credits;
+  }
+}

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

@@ -1,6 +1,7 @@
 import { Module } from '@nestjs/common';
 import { AngelicaCastilloLoader } from './angelica_castillo_loader.js';
 import { AnthonyMaysLoader } from './anthony_mays_loader.js';
+import { ChelseaOgbonniaLoader } from './chelsea_ogbonnia_loader.js';
 import { JamesCapparellLoader } from './james_capparell_loader.js';
 import { NileJacksonLoader } from './nile_jackson_loader.js';
 import { XavierCruzLoader } from './xavier_cruz_loader.js';
@@ -10,6 +11,7 @@ export const Loaders = Symbol.for('Loaders');
 // Add your quiz provider here.
 const LOADER_PROVIDERS = [
   AnthonyMaysLoader,
+  ChelseaOgbonniaLoader,
   AngelicaCastilloLoader,
   JamesCapparellLoader,
   NileJacksonLoader,