diff --git a/lesson_10/libraries/src/loaders/james_capparell_loader.ts b/lesson_10/libraries/src/loaders/james_capparell_loader.ts new file mode 100644 index 000000000..6a7719d3b --- /dev/null +++ b/lesson_10/libraries/src/loaders/james_capparell_loader.ts @@ -0,0 +1,45 @@ +import csv from 'csv-parser'; +import fs from 'fs'; +import { Credit, MediaItem } from '../models/index.js'; +import { Loader } from './loader.js'; + +export class JamesCapparellLoader implements Loader { + getLoaderName(): string { + return 'jamescapparell'; + } + + 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 { + const medias = []; + const readable = fs + .createReadStream('data/media_items.csv', 'utf-8') + .pipe(csv()); + for await (const row of readable) { + const {id, title, type, year } = row; + medias.push(new MediaItem(id, title, type, year, [])); + } + return medias; + } + + 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 05e33aae0..33ccc5d13 100644 --- a/lesson_10/libraries/src/loaders/loaders.module.ts +++ b/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 { JamesCapparellLoader } from './james_capparell_loader.js'; import { NileJacksonLoader } from './nile_jackson_loader.js'; import { XavierCruzLoader } from './xavier_cruz_loader.js'; @@ -10,8 +11,9 @@ export const Loaders = Symbol.for('Loaders'); const LOADER_PROVIDERS = [ AnthonyMaysLoader, AngelicaCastilloLoader, - XavierCruzLoader, + JamesCapparellLoader, NileJacksonLoader, + XavierCruzLoader, ]; @Module({