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<?php

declare(strict_types=1);

namespace DoctrineMigrations;

use Doctrine\DBAL\Schema\Schema;
use Doctrine\Migrations\AbstractMigration;

/**
 * 兄弟設定でのスクール表示制御のためのマイグレーション
 * A学校でB学校、C学校のみを兄弟設定リストに表示する機能を追加
 */
final class Version20250917000000 extends AbstractMigration
{
    public function getDescription(): string
    {
        return '兄弟設定でのスクール表示制御テーブル (dtb_school_brother_display) を追加';
    }

    public function up(Schema $schema): void
    {
        $schemaManager = $this->connection->createSchemaManager();
        
        // テーブルが存在しない場合のみ作成
        if (!$schemaManager->tablesExist(['dtb_school_brother_display'])) {
            // 兄弟設定表示制御テーブルを作成
            $this->addSql('CREATE TABLE dtb_school_brother_display (
                id INT AUTO_INCREMENT NOT NULL,
                base_school_id INT UNSIGNED NOT NULL,
                target_school_id INT UNSIGNED NOT NULL,
                PRIMARY KEY(id),
                UNIQUE INDEX unique_school_pair (base_school_id, target_school_id),
                INDEX IDX_school_brother_display_base_school (base_school_id),
                INDEX IDX_school_brother_display_target_school (target_school_id)
            ) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_general_ci` ENGINE = InnoDB');

            // 外部キー制約を追加
            $this->addSql('ALTER TABLE dtb_school_brother_display 
                ADD CONSTRAINT FK_school_brother_display_base_school 
                FOREIGN KEY (base_school_id) REFERENCES dtb_school (school_id) ON DELETE CASCADE');
            
            $this->addSql('ALTER TABLE dtb_school_brother_display 
                ADD CONSTRAINT FK_school_brother_display_target_school 
                FOREIGN KEY (target_school_id) REFERENCES dtb_school (school_id) ON DELETE CASCADE');
        }
    }

    public function down(Schema $schema): void
    {
        $schemaManager = $this->connection->createSchemaManager();
        
        // テーブルが存在する場合のみ削除
        if ($schemaManager->tablesExist(['dtb_school_brother_display'])) {
            // 外部キー制約を削除
            $this->addSql('ALTER TABLE dtb_school_brother_display DROP FOREIGN KEY FK_school_brother_display_base_school');
            $this->addSql('ALTER TABLE dtb_school_brother_display DROP FOREIGN KEY FK_school_brother_display_target_school');
            
            // テーブルを削除
            $this->addSql('DROP TABLE dtb_school_brother_display');
        }
    }
}
app/DoctrineMigrations/Version20250917000000.php line 1
