my-links/database/migrations/1714253983443_create_collections_table.ts

import { defaultTableFields } from '#database/default_table_fields';
import { Visibility } from '#enums/visibility';
import { BaseSchema } from '@adonisjs/lucid/schema';

export default class CreateCollectionTable extends BaseSchema {
	static tableName = 'collections';
	private visibilityEnumName = 'collection_visibility';

	async up() {
		this.schema.raw(`DROP TYPE IF EXISTS ${this.visibilityEnumName}`);
		this.schema.createTableIfNotExists(
			CreateCollectionTable.tableName,
			(table) => {
				table.string('name', 254).notNullable();
				table.string('description', 254).nullable();
				table
					.enum('visibility', Object.values(Visibility), {
						useNative: true,
						enumName: this.visibilityEnumName,
						existingType: false,
					})
					.nullable()
					.defaultTo(Visibility.PRIVATE);
				table
					.integer('next_id')
					.references('id')
					.inTable('collections')
					.defaultTo(null);
				table
					.integer('author_id')
					.references('id')
					.inTable('users')
					.onDelete('CASCADE');

				defaultTableFields(table);
			}
		);
	}

	async down() {
		this.schema.raw(`DROP TYPE IF EXISTS ${this.visibilityEnumName}`);
		this.schema.dropTable(CreateCollectionTable.tableName);
	}
}