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45 changes: 45 additions & 0 deletions lesson_10/libraries/src/loaders/hummad_tanweer_loader.ts
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import csv from 'csv-parser';
import fs from 'fs';
import { Credit, MediaItem } from '../models/index.js';
import { Loader } from './loader.js';

export class HummadTanweerLoader implements Loader {
getLoaderName(): string {
return 'hummadtanweer';
}

async loadData(): Promise<MediaItem[]> {
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<MediaItem[]> {
const media = [];
const readable = fs
.createReadStream('data/media_items.csv', 'utf-8')
.pipe(csv());
for await (const row of readable) {
const { id, title, type, year: realeaseYear } = row;
media.push(new MediaItem(id, title, type, realeaseYear, []));
}
return media;
}

async loadCredits(): Promise<Credit[]> {
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;
}
}
8 changes: 6 additions & 2 deletions lesson_10/libraries/src/loaders/loaders.module.ts
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@@ -1,20 +1,24 @@
import { Module } from '@nestjs/common';

import { AngelicaCastilloLoader } from './angelica_castillo_loader.js';
import { HummadTanweerLoader } from './hummad_tanweer_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';


export const Loaders = Symbol.for('Loaders');

// Add your quiz provider here.
const LOADER_PROVIDERS = [
AnthonyMaysLoader,
AngelicaCastilloLoader,
AnthonyMaysLoader,
HummadTanweerLoader,
JamesCapparellLoader,
NileJacksonLoader,
XavierCruzLoader,
];
]

@Module({
providers: [
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