<?php

use yii\db\Migration;

class m160304_065108_product extends Migration
{
    public function up()
    {
        $tableOptions = null;
        if ($this->db->driverName === 'mysql') {
            // Only for MySQL
            $tableOptions = 'CHARACTER SET utf8 COLLATE utf8_unicode_ci ENGINE=InnoDB';

            // @todo https://habrahabr.ru/post/138947/
        } elseif ($this->db->driverName === 'pgsql') {
            // Only for PostgreSQL
            // @todo use intarray field for tax_options
        }
        $this->createTable('{{%product}}', [
            'product_id' => $this->primaryKey(),
            'name' => $this->string(255)->notNull(),
        ], $tableOptions);

        $this->createTable('{{%product_category}}', [
            'product_id' => $this->integer()->notNull(),
            'category_id' => $this->integer()->notNull(),
        ], $tableOptions);
        $this->addForeignKey('fki_product_id', 'product_category', 'product_id', 'product', 'product_id', 'NO ACTION', 'NO ACTION');
        $this->addForeignKey('fki_category_id', 'product_category', 'category_id', 'tax_option', 'tax_option_id', 'NO ACTION', 'NO ACTION');
    }

    public function down()
    {
        $this->dropTable('{{%product}}');
        $this->dropTable('{{%product_category}}');

        return false;
    }

    /*
    // Use safeUp/safeDown to run migration code within a transaction
    public function safeUp()
    {
    }

    public function safeDown()
    {
    }
    */
}