<?php

declare(strict_types=1);

namespace DoctrineMigrations;

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

final class Version20251114120500 extends AbstractMigration
{
    public function getDescription(): string
    {
        return 'Add user-created album fields: local_id, source, created_by_id; make spotify_id nullable';
    }

    public function up(Schema $schema): void
    {
        if ($this->isSqlite()) {
            // SQLite schema already ships with these columns/defaults.
            return;
        }
        $this->addSql("ALTER TABLE albums ADD local_id VARCHAR(64) DEFAULT NULL");
        $this->addSql("ALTER TABLE albums ADD source VARCHAR(16) NOT NULL DEFAULT 'spotify'");
        $this->addSql("ALTER TABLE albums ADD created_by_id INT DEFAULT NULL");
        $this->addSql("ALTER TABLE albums ALTER spotify_id DROP NOT NULL");
        $this->addSql("CREATE UNIQUE INDEX uniq_album_local_id ON albums (local_id)");
        $this->addSql("ALTER TABLE albums ADD CONSTRAINT FK_F4E2474FB03A8386 FOREIGN KEY (created_by_id) REFERENCES users (id) ON DELETE SET NULL NOT DEFERRABLE INITIALLY IMMEDIATE");
        $this->addSql("CREATE INDEX IDX_F4E2474FB03A8386 ON albums (created_by_id)");
        $this->addSql("UPDATE albums SET source = 'spotify' WHERE source IS NULL");
    }

    public function down(Schema $schema): void
    {
        if ($this->isSqlite()) {
            return;
        }
        $this->addSql("ALTER TABLE albums DROP CONSTRAINT FK_F4E2474FB03A8386");
        $this->addSql("DROP INDEX IF EXISTS uniq_album_local_id");
        $this->addSql("DROP INDEX IF EXISTS IDX_F4E2474FB03A8386");
        $this->addSql("ALTER TABLE albums DROP COLUMN local_id");
        $this->addSql("ALTER TABLE albums DROP COLUMN source");
        $this->addSql("ALTER TABLE albums DROP COLUMN created_by_id");
        $this->addSql("ALTER TABLE albums ALTER spotify_id SET NOT NULL");
    }

    private function isSqlite(): bool
    {
        return $this->connection->getDatabasePlatform()->getName() === 'sqlite';
    }
}