diff --git a/lesson_10/libraries/src/loaders/khayla_saunders_loader.ts b/lesson_10/libraries/src/loaders/khayla_saunders_loader.ts new file mode 100644 index 000000000..51ee82f74 --- /dev/null +++ b/lesson_10/libraries/src/loaders/khayla_saunders_loader.ts @@ -0,0 +1,56 @@ +import csv from 'csv-parser'; +import fs from 'fs'; +import { Credit, MediaItem } from '../models/index.js'; +import { Loader } from './loader.js'; + +export class KhaylaSaundersLoader implements Loader { + getLoaderName(): string { + return 'khaylasaunders'; + } + + async loadData(): Promise { + const credits = await this.loadCredits(); + const mediaItems = await this.loadMediaItems(); + + console.log( + `Loaded ${credits.length} credits and ${mediaItems.length} media items`, + ); + //Extra credit was generated with the assistance of chatGPT + const creditsMap: Record = {}; + + for (const credit of credits) { + const mediaItemId = credit.getMediaItemId(); + if (!creditsMap[mediaItemId]) { + creditsMap[mediaItemId] = []; + } + creditsMap[mediaItemId].push(credit); + } + + return [...mediaItems.values()]; + } + + async loadMediaItems(): Promise { + // TODO: Implement this method. + const mediaItems = []; + const readable = fs + .createReadStream('data/media_items.csv', 'utf-8') + .pipe(csv()); + for await (const row of readable) { + const { id, title, type, year } = row; + mediaItems.push(new MediaItem(id, title, type, year, [])); + } + return mediaItems; + } + + async loadCredits(): Promise { + 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; + } +} diff --git a/lesson_10/libraries/src/loaders/loaders.module.ts b/lesson_10/libraries/src/loaders/loaders.module.ts index b85b85314..1c60a17c8 100644 --- a/lesson_10/libraries/src/loaders/loaders.module.ts +++ b/lesson_10/libraries/src/loaders/loaders.module.ts @@ -1,6 +1,12 @@ import { Module } from '@nestjs/common'; import { AnthonyMaysLoader } from './anthony_mays_loader.js'; +lesson10 +import { KhaylaSaundersLoader } from './khayla_saunders_loader.js'; + +export const Loaders = Symbol.for('Loaders'); + +const LOADER_PROVIDERS = [AnthonyMaysLoader, KhaylaSaundersLoader]; import { DylanLaffertysLoader } from './dylan_lafferty_loaders.js'; import { MercedesMathewsLoader } from './mercedes_mathews_loader.js'; @@ -11,6 +17,7 @@ const LOADER_PROVIDERS = [ DylanLaffertysLoader, MercedesMathewsLoader, ]; +main @Module({ providers: [