Category Videos N:M migrations

categories.ts

import { MigrationInterface, QueryRunner, Table } from 'typeorm';

export default class CreateCategories1615810402060
  implements MigrationInterface {
  public async up(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.createTable(
      new Table({
        name: 'categories',
        columns: [
          {
            name: 'id',
            type: 'uuid',
            isPrimary: true,
            generationStrategy: 'uuid',
            default: 'uuid_generate_v4()',
          },
          {
            name: 'description',
            type: 'varchar',
          },
          {
            name: 'created_at',
            type: 'timestamp with time zone',
            default: 'now()',
          },
          {
            name: 'updated_at',
            type: 'timestamp with time zone',
            default: 'now()',
          },
        ],
      }),
    );
  }

  public async down(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.dropTable('categories');
  }
}

categories_has_videos.ts

import { MigrationInterface, QueryRunner, Table } from 'typeorm';

export default class CreateCategoriesHasVideos1615817955007
  implements MigrationInterface {
  public async up(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.createTable(
      new Table({
        name: 'categories_has_videos',
        columns: [
          {
            name: 'category_id',
            type: 'uuid',
            isPrimary: true,
          },
          {
            name: 'video_id',
            type: 'uuid',
            isPrimary: true,
          },
        ],
        foreignKeys: [
          {
            name: 'FK_CATEGORY_ID',
            columnNames: ['category_id'],
            referencedTableName: 'categories',
            referencedColumnNames: ['id'],
            onDelete: 'CASCADE',
            onUpdate: 'CASCADE',
          },
          {
            name: 'FK_VIDEO_ID',
            columnNames: ['video_id'],
            referencedTableName: 'videos',
            referencedColumnNames: ['id'],
            onDelete: 'CASCADE',
            onUpdate: 'CASCADE',
          },
        ],
        indices: [
          {
            name: 'IDX_CATEGORY',
            columnNames: ['category_id'],
          },
          {
            name: 'IDX_VIDEO',
            columnNames: ['video_id'],
          },
        ],
      }),
    );
  }

  public async down(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.dropTable('categories_has_videos');
  }
}

videos.ts

import { MigrationInterface, QueryRunner, Table } from 'typeorm';

export default class CreateVideos1615810411230 implements MigrationInterface {
  public async up(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.createTable(
      new Table({
        name: 'videos',
        columns: [
          {
            name: 'id',
            type: 'uuid',
            isPrimary: true,
            generationStrategy: 'uuid',
            default: 'uuid_generate_v4()',
          },
          {
            name: 'description',
            type: 'varchar',
          },
          {
            name: 'url',
            type: 'varchar',
          },
          {
            name: 'created_at',
            type: 'timestamp with time zone',
            default: 'now()',
          },
          {
            name: 'updated_at',
            type: 'timestamp with time zone',
            default: 'now()',
          },
        ],
      }),
    );
  }

  public async down(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.dropTable('videos');
  }
}