feat: adds joseph_caballero_loader.ts and modifies loaders.module.ts for lesson_10 homework

Author: Josephcabs

lesson_10/libraries/src/loaders/joseph_caballero_loader.ts

@@ -0,0 +1,196 @@
+import fs from 'fs';
+import { Credit, MediaItem, MediaType, Role } from '../models/index.js';
+import { Loader } from './loader.js';
+
+export class JosephCaballeroLoader implements Loader {
+  getLoaderName(): string {
+    return 'josephcaballero';
+  }
+
+  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`,
+    );
+    mediaItems.forEach((item) => {
+      credits.forEach((id) => {
+        if (id.getMediaItemId() == item.getId()) {
+          item.addCredit(id);
+        }
+      });
+    });
+
+    return [...mediaItems.values()];
+  }
+
+  async loadMediaItems(): Promise<MediaItem[]> {
+    // TODO: Implement this method.
+    const items = [];
+    const load = fs
+      .readFileSync('data/media_items.csv', {
+        encoding: 'utf-8',
+      })
+      .split('\n')
+      .map((row: string): string[] => {
+        return row.split(',');
+      });
+    load.splice(0, 1);
+    interface arrayObj {
+      id: string;
+      title: string;
+      type: MediaType.Documentary | MediaType.Movie | MediaType.TVShow;
+      year: number;
+    }
+    const obj: arrayObj[] = load.map((row: string[]): arrayObj => {
+      if (MediaType.Documentary == row[1]) {
+        return {
+          id: row[0],
+          title: row[2],
+          type: (row[1] = MediaType.Documentary),
+          year: Number(row[4]),
+        };
+      } else if (MediaType.TVShow == row[1]) {
+        return {
+          id: row[0],
+          title: row[2],
+          type: (row[1] = MediaType.TVShow),
+          year: Number(row[4]),
+        };
+      } else {
+        return {
+          id: row[0],
+          title: row[2],
+          type: (row[1] = MediaType.Movie),
+          year: Number(row[4]),
+        };
+      }
+    });
+    for await (const row of obj) {
+      const { id, type, title, year } = row;
+      items.push(new MediaItem(id, title, type, year, []));
+    }
+    return items;
+  }
+
+  async loadCredits(): Promise<Credit[]> {
+    const credits = [];
+    const load = fs
+      .readFileSync('data/media_items.csv', {
+        encoding: 'utf-8',
+      })
+      .split('\n')
+      .map((row: string): string[] => {
+        return row.split(',');
+      });
+    load.splice(0, 1);
+    interface arrayObj {
+      media_Item_Id: string;
+      type: string;
+      role:
+        | Role.Actor
+        | Role.Cinematographer
+        | Role.Composer
+        | Role.CostumeDesigner
+        | Role.Director
+        | Role.Editor
+        | Role.MakeupArtist
+        | Role.Producer
+        | Role.ProductionDesigner
+        | Role.SoundDesigner
+        | Role.StuntCoordinator
+        | Role.Writer;
+    }
+    const obj: arrayObj[] = load.map((row: string[]): arrayObj => {
+      if (row[2] == Role.Actor) {
+        return {
+          media_Item_Id: row[0],
+          type: row[1],
+          role: (row[2] = Role.Actor),
+        };
+      }
+      if (row[2] == Role.Cinematographer) {
+        return {
+          media_Item_Id: row[0],
+          type: row[1],
+          role: (row[2] = Role.Cinematographer),
+        };
+      }
+      if (row[2] == Role.Composer) {
+        return {
+          media_Item_Id: row[0],
+          type: row[1],
+          role: (row[2] = Role.Composer),
+        };
+      }
+      if (row[2] == Role.CostumeDesigner) {
+        return {
+          media_Item_Id: row[0],
+          type: row[1],
+          role: (row[2] = Role.CostumeDesigner),
+        };
+      }
+      if (row[2] == Role.Director) {
+        return {
+          media_Item_Id: row[0],
+          type: row[1],
+          role: (row[2] = Role.Director),
+        };
+      }
+      if (row[2] == Role.Editor) {
+        return {
+          media_Item_Id: row[0],
+          type: row[1],
+          role: (row[2] = Role.Editor),
+        };
+      }
+      if (row[2] == Role.MakeupArtist) {
+        return {
+          media_Item_Id: row[0],
+          type: row[1],
+          role: (row[2] = Role.MakeupArtist),
+        };
+      }
+      if (row[2] == Role.Producer) {
+        return {
+          media_Item_Id: row[0],
+          type: row[1],
+          role: (row[2] = Role.Producer),
+        };
+      }
+      if (row[2] == Role.ProductionDesigner) {
+        return {
+          media_Item_Id: row[0],
+          type: row[1],
+          role: (row[2] = Role.ProductionDesigner),
+        };
+      }
+      if (row[2] == Role.SoundDesigner) {
+        return {
+          media_Item_Id: row[0],
+          type: row[1],
+          role: (row[2] = Role.SoundDesigner),
+        };
+      }
+      if (row[2] == Role.StuntCoordinator) {
+        return {
+          media_Item_Id: row[0],
+          type: row[1],
+          role: (row[2] = Role.StuntCoordinator),
+        };
+      } else {
+        return {
+          media_Item_Id: row[0],
+          type: row[1],
+          role: (row[2] = Role.Writer),
+        };
+      }
+    });
+    for await (const row of obj) {
+      const { media_Item_Id, type, role } = row;
+      credits.push(new Credit(media_Item_Id, type, role));
+    }
+    return credits;
+  }
+}

lesson_10/libraries/src/loaders/loaders.module.ts

@@ -2,6 +2,7 @@ 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 { JosephCaballeroLoader } from './joseph_caballero_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,
+  JosephCaballeroLoader,
 ];
 
 @Module({