database/commands/MakeMigrationCommand.js

//--------------------------------------------------------
//-- Node IoC - Database - Command - Make Migration
//--------------------------------------------------------

import GeneratorCommand from '../../console/GeneratorCommand';


/**
 * Command that makes a migration class file inside the database migrations folder.
 *
 * @memberof database.commands
 * @augments console.GeneratorCommand
 * @hideconstructor
 */
class MakeMigrationCommand extends GeneratorCommand {

	/**
	 * @inheritdoc
	 */
	get policies() {
		return (super.policies || []).concat(['db']);
	}

	/**
	 * @inheritdoc
	 */
	get name() {
		return 'make:migration';
	}

	/**
	 * @inheritdoc
	 */
	get flags() {
		return super.flags.concat([
			['stub', this.t('commands.make-migration.flags.stub')]
		]);
	}

	/**
	 * @inheritdoc
	 */
	get files() {
		return {
			'create': this.app.formatPath(__dirname, 'stubs', 'MigrationCreate.stub'),
			'alter':  this.app.formatPath(__dirname, 'stubs', 'MigrationAlter.stub'),
			'drop':   this.app.formatPath(__dirname, 'stubs', 'MigrationDrop.stub'),
			'delete': this.app.formatPath(__dirname, 'stubs', 'MigrationDrop.stub')
		};
	}

	/**
	 * @inheritdoc
	 */
	get destination() {
		return this.app.make('db.resolver').resolveSourcePath('migrations');
	}

	/**
	 * @inheritdoc
	 */
	get fileName() {
		const prefix = this.app.make('helper.date')().format('YYYYMMDDHHmmss');

		return `${prefix}_${this.parameter('class')}.${this.flag('stub') ? 'stub' : 'js'}`;
	}

	/**
	 * @inheritdoc
	 */
	get patterns() {
		return {
			TABLE: this.getTableName()
		};
	}

	/**
	 * @inheritdoc
	 */
	async handle() {
		const name = this.parameter('class');
		this.debug(this.t('commands.make-migration.messages.generating', { name }));
		await this.generate(this.getAction());
		this.info(this.t('commands.make-migration.messages.success', { name }));
	}

	/**
	 * Get guessed table name based on the class name.
	 *
	 * @returns {string} The database table name.
	 */
	getTableName() {
		const table = ((/.+(?<table>[A-Z][a-zA-Z]+)Table$/u).exec(this.parameter('class')) || { groups: {} }).groups.table || 'Table';

		return this.app.make('helper.string').slug(table);
	}

	/**
	 * Get guessed action based on the class name.
	 *
	 * @returns {string} The action that the migration is doing.
	 */
	getAction() {
		const { action = 'Alter' } =  ((/^(?<action>[A-Z][a-z]+)/u).exec(this.parameter('class')) || { groups: {} }).groups;

		const supported = Object.keys(this.files);
		const slug = this.app.make('helper.string').slug(action);

		return supported.includes(slug) ? slug : supported[0];
	}

}


export default MakeMigrationCommand;