Feat/Combines credit and media items.

Author: Dlafferty251

lesson_10/libraries/src/loaders/dylan_lafferty_loaders.ts

@@ -1,18 +1,37 @@
 import csv from 'csv-parser';
 import fs from 'fs';
 import { Credit, MediaItem } from '../models/index.js';
+import { Loader } from './loader.js';
 
-export class DylanLaffertysLoader {
-  getLoaderName() {
+export class DylanLaffertysLoader implements Loader {
+  getLoaderName(): string {
     return 'dylanlafferty';
   }
   async loadData(): Promise<MediaItem[]> {
-    const credits = await this.loadCredits();
-    const mediaItems = await this.loadMediaItems();
+    const credits = await this.loadCredits(); //loads credits from the csv file
+    const mediaItems = await this.loadMediaItems(); //loads media items from csv file
+
+    //Creates a map where the key is a string and the value is MediaItem Object
+    const mapIndex = new Map<string, MediaItem>();
+
+    //Loops through the CSV file and gets the id of the mediaItem that is specified.
+    for (const mediaItem of mediaItems) {
+      mapIndex.set(mediaItem.getId(), mediaItem);
+
+    }
+
+    for (const credit of credits) {
+      const mediaItem = mapIndex.get(credit.getMediaItemId()); //Finds the media item by getting media ID
+      if (mediaItem) {
+        mediaItem.addCredit(credit);
+      }
+    }
+
     console.log(
       `Loaded ${credits.length} credits and ${mediaItems.length} media items`,
     );
-    return [...mediaItems.values()];
+    //Returns a newly created array by converting the map values
+    return Array.from(mapIndex.values());
   }
 
   async loadMediaItems(): Promise<MediaItem[]> {
@@ -22,8 +41,8 @@ export class DylanLaffertysLoader {
       .pipe(csv());
 
     for await (const row of readable) {
-      const { id, title, type, releaseYear } = row;
-      mediaItem.push(new MediaItem(id, title, type, parseInt(releaseYear), []));
+      const { id, title, type, year } = row;
+      mediaItem.push(new MediaItem(id, title, type, year, []));
     }
     return mediaItem;
   }
@@ -40,4 +59,4 @@ export class DylanLaffertysLoader {
     return credits;
   }
 }
-//# sourceMappingURL=dylan_lafferty_loaders.js.map
+//# sourceMappingURL=dylan_lafferty_loaders.js.map