<?php

namespace Application\Migrations;

use Doctrine\DBAL\Migrations\AbstractMigration;
use Doctrine\DBAL\Schema\Schema;
use Symfony\Component\DependencyInjection\ContainerAwareInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Converted database to utf8mb4 encoding (for MySQL only)
 */
class Version20161022134138 extends AbstractMigration implements ContainerAwareInterface
{
    /**
     * @var ContainerInterface
     */
    private $container;

    public function setContainer(ContainerInterface $container = null)
    {
        $this->container = $container;
    }

    private function getTable($tableName)
    {
        return $this->container->getParameter('database_table_prefix').$tableName;
    }

    /**
     * @param Schema $schema
     */
    public function up(Schema $schema)
    {
        $this->skipIf($this->connection->getDatabasePlatform()->getName() !== 'mysql', 'This migration only apply to MySQL');

        $this->addSql('ALTER DATABASE '.$this->connection->getParams()['dbname'].' CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci;');

        // convert field length for utf8mb4
        // http://stackoverflow.com/a/31474509/569101
        $this->addSql('ALTER TABLE '.$this->getTable('user').' CHANGE confirmation_token confirmation_token VARCHAR(180) DEFAULT NULL;');
        $this->addSql('ALTER TABLE '.$this->getTable('user').' CHANGE salt salt VARCHAR(180) NOT NULL;');
        $this->addSql('ALTER TABLE '.$this->getTable('user').' CHANGE password password VARCHAR(180) NOT NULL;');

        $this->addSql('ALTER TABLE '.$this->getTable('annotation').' CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;');
        $this->addSql('ALTER TABLE '.$this->getTable('entry').' CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;');
        $this->addSql('ALTER TABLE '.$this->getTable('tag').' CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;');
        $this->addSql('ALTER TABLE '.$this->getTable('user').' CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;');

        $this->addSql('ALTER TABLE '.$this->getTable('annotation').' CHANGE `text` `text` longtext CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;');
        $this->addSql('ALTER TABLE '.$this->getTable('annotation').' CHANGE `quote` `quote` VARCHAR(191) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;');

        $this->addSql('ALTER TABLE '.$this->getTable('entry').' CHANGE `title` `title` longtext CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;');
        $this->addSql('ALTER TABLE '.$this->getTable('entry').' CHANGE `content` `content` longtext CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;');

        $this->addSql('ALTER TABLE '.$this->getTable('tag').' CHANGE `label` `label` longtext CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;');

        $this->addSql('ALTER TABLE '.$this->getTable('user').' CHANGE `name` `name` longtext CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;');
    }

    /**
     * @param Schema $schema
     */
    public function down(Schema $schema)
    {
        $this->skipIf($this->connection->getDatabasePlatform()->getName() !== 'mysql', 'This migration only apply to MySQL');

        $this->addSql('ALTER DATABASE '.$this->connection->getParams()['dbname'].' CHARACTER SET = utf8 COLLATE = utf8_unicode_ci;');

        $this->addSql('ALTER TABLE '.$this->getTable('annotation').' CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci;');
        $this->addSql('ALTER TABLE '.$this->getTable('entry').' CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci;');
        $this->addSql('ALTER TABLE '.$this->getTable('tag').' CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci;');
        $this->addSql('ALTER TABLE '.$this->getTable('user').' CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci;');

        $this->addSql('ALTER TABLE '.$this->getTable('annotation').' CHANGE `text` `text` longtext CHARACTER SET utf8 COLLATE utf8_unicode_ci;');
        $this->addSql('ALTER TABLE '.$this->getTable('annotation').' CHANGE `quote` `quote` VARCHAR(255) CHARACTER SET utf8 COLLATE utf8_unicode_ci;');

        $this->addSql('ALTER TABLE '.$this->getTable('entry').' CHANGE `title` `title` longtext CHARACTER SET utf8 COLLATE utf8_unicode_ci;');
        $this->addSql('ALTER TABLE '.$this->getTable('entry').' CHANGE `content` `content` longtext CHARACTER SET utf8 COLLATE utf8_unicode_ci;');

        $this->addSql('ALTER TABLE '.$this->getTable('tag').' CHANGE `label` `label` longtext CHARACTER SET utf8 COLLATE utf8_unicode_ci;');

        $this->addSql('ALTER TABLE '.$this->getTable('user').' CHANGE `name` `name` longtext CHARACTER SET utf8 COLLATE utf8_unicode_ci;');
    }
}