diff --git a/lesson_10/libraries/src/loaders/dwight_blue_loader.ts b/lesson_10/libraries/src/loaders/dwight_blue_loader.ts new file mode 100644 index 000000000..415632424 --- /dev/null +++ b/lesson_10/libraries/src/loaders/dwight_blue_loader.ts @@ -0,0 +1,51 @@ +import csv from 'csv-parser'; +import fs from 'fs'; +import { Credit, MediaItem } from '../models/index.js'; +import { Loader } from './loader.js'; + +export class DwightBlueLoader implements Loader { + getLoaderName(): string { + return 'dwightblue'; + } + + async loadData(): Promise { + const credits = await this.loadCredits(); + const mediaItems = await this.loadMediaItems(); + + for (let i = 0; i < mediaItems.length; i++) { + mediaItems[i].addCredit(credits[i]); + console.log(mediaItems[i]); + } + + console.log( + `Loaded ${credits.length} credits and ${mediaItems.length} media items`, + ); + + return [...mediaItems.values()]; + } + + async loadMediaItems(): Promise { + // TODO: Implement this method. + const mediaItem = []; + const readable = fs + .createReadStream('data/media_items.csv', 'utf-8') + .pipe(csv()); + for await (const row of readable) { + const { id, title, type, year } = row; + mediaItem.push(new MediaItem(id, title, type, year, [])); + } + return mediaItem; + } + + 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: mediaItemId, role, name } = row; + credits.push(new Credit(mediaItemId, 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 33ccc5d13..d74075324 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 { DwightBlueLoader } from './dwight_blue_loader.js'; import { JamesCapparellLoader } from './james_capparell_loader.js'; import { NileJacksonLoader } from './nile_jackson_loader.js'; import { XavierCruzLoader } from './xavier_cruz_loader.js'; @@ -11,6 +12,7 @@ export const Loaders = Symbol.for('Loaders'); const LOADER_PROVIDERS = [ AnthonyMaysLoader, AngelicaCastilloLoader, + DwightBlueLoader, JamesCapparellLoader, NileJacksonLoader, XavierCruzLoader,