From 7b2605bf7f51c8cc82c2d548e5b2ac710de7705d Mon Sep 17 00:00:00 2001
From: dxsmith244 <dxsmith244@gmail.com>
Date: Fri, 18 Oct 2024 13:35:08 +0000
Subject: [PATCH] feat: adds david_smith_loader.ts from lesson_10 homework

---
 .../src/loaders/david_smith_loader.ts         | 45 +++++++++++++++++++
 .../libraries/src/loaders/loaders.module.ts   |  2 +
 2 files changed, 47 insertions(+)
 create mode 100644 lesson_10/libraries/src/loaders/david_smith_loader.ts

diff --git a/lesson_10/libraries/src/loaders/david_smith_loader.ts b/lesson_10/libraries/src/loaders/david_smith_loader.ts
new file mode 100644
index 000000000..e7f86f57e
--- /dev/null
+++ b/lesson_10/libraries/src/loaders/david_smith_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 DavidSmithLoader implements Loader {
+  getLoaderName(): string {
+    return 'davidsmith';
+  }
+
+  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 } = row;
+      media.push(new MediaItem(id, title, type, year, []));
+    }
+    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;
+  }
+}
diff --git a/lesson_10/libraries/src/loaders/loaders.module.ts b/lesson_10/libraries/src/loaders/loaders.module.ts
index 33ccc5d13..18a739329 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 { DavidSmithLoader } from './david_smith_loader.js';
 import { JamesCapparellLoader } from './james_capparell_loader.js';
 import { NileJacksonLoader } from './nile_jackson_loader.js';
 import { XavierCruzLoader } from './xavier_cruz_loader.js';
@@ -14,6 +15,7 @@ const LOADER_PROVIDERS = [
   JamesCapparellLoader,
   NileJacksonLoader,
   XavierCruzLoader,
+  DavidSmithLoader,
 ];
 
 @Module({