app/DoctrineMigrations/Version20251219000000.php line 1

<?php

declare(strict_types=1);

namespace DoctrineMigrations;

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

/**
 * 学校進学関係マスターのためのマイグレーション
 * 進学前学校・進学後学校の関係性を管理する機能を追加
 */
final class Version20251219000000 extends AbstractMigration
{
    public function getDescription(): string
    {
        return '学校進学関係マスターテーブル (dtb_school_progression) 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_progression'])) {
            // 学校進学関係テーブルを作成（進学前学校用）
            $this->addSql('CREATE TABLE dtb_school_progression (
                id INT AUTO_INCREMENT NOT NULL,
                base_school_id INT UNSIGNED NOT NULL COMMENT "基準となる学校ID",
                target_school_id INT UNSIGNED NOT NULL COMMENT "関係する学校ID",
                progression_type TINYINT NOT NULL COMMENT "進学種別(1:進学前, 2:進学後)",
                PRIMARY KEY(id),
                UNIQUE INDEX unique_school_progression (base_school_id, target_school_id, progression_type),
                INDEX IDX_school_progression_base_school (base_school_id),
                INDEX IDX_school_progression_target_school (target_school_id),
                INDEX IDX_school_progression_type (progression_type)
            ) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_general_ci` ENGINE = InnoDB COMMENT="学校進学関係マスター"');

            // 外部キー制約を追加
            $this->addSql('ALTER TABLE dtb_school_progression 
                ADD CONSTRAINT FK_school_progression_base_school 
                FOREIGN KEY (base_school_id) REFERENCES dtb_school (school_id) ON DELETE CASCADE');
            
            $this->addSql('ALTER TABLE dtb_school_progression 
                ADD CONSTRAINT FK_school_progression_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_progression'])) {
            // 外部キー制約を削除
            $this->addSql('ALTER TABLE dtb_school_progression DROP FOREIGN KEY FK_school_progression_base_school');
            $this->addSql('ALTER TABLE dtb_school_progression DROP FOREIGN KEY FK_school_progression_target_school');
            
            // テーブルを削除
            $this->addSql('DROP TABLE dtb_school_progression');
        }
    }
}