diff --git a/lesson_10/libraries/src/loaders/davis_d_loader.ts b/lesson_10/libraries/src/loaders/davis_d_loader.ts new file mode 100644 index 000000000..e6858ee39 --- /dev/null +++ b/lesson_10/libraries/src/loaders/davis_d_loader.ts @@ -0,0 +1,48 @@ +import csv from 'csv-parser'; +import fs from 'fs'; +import { Credit, MediaItem } from '../models/index.js'; +import { Loader } from './loader.js'; + +// Do the extra credit tonight as well as prework for tommorow!! + +export class DavisDLoader implements Loader { + getLoaderName(): string { + return 'davis'; + } + + async loadData(): Promise { + 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 { + // 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 6029f39e6..2dc00a88e 100644 --- a/lesson_10/libraries/src/loaders/loaders.module.ts +++ b/lesson_10/libraries/src/loaders/loaders.module.ts @@ -3,6 +3,7 @@ import { Module } from '@nestjs/common'; import { AnthonyMaysLoader } from './anthony_mays_loader.js'; import { ChanelHuttLoader } from './chanel_hutt_loader.js'; import { DavidAdenaikeLoader } from './david_adenaike_loader.js'; +import { DavisDLoader } from './davis_d_loader.js'; import { DylanLaffertysLoader } from './dylan_lafferty_loaders.js'; import { MercedesMathewsLoader } from './mercedes_mathews_loader.js'; import { MontezBLoader } from './montez_b_loaders.js'; @@ -11,6 +12,7 @@ export const Loaders = Symbol.for('Loaders'); const LOADER_PROVIDERS = [ AnthonyMaysLoader, DylanLaffertysLoader, + DavisDLoader, ChanelHuttLoader, MercedesMathewsLoader, DavidAdenaikeLoader,