<?php

declare(strict_types=1);

namespace DoctrineMigrations;

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

final class Version20260402120000 extends AbstractMigration
{
    public function getDescription(): string
    {
        return 'Add nullable cover_image_path to albums for user-uploaded album artwork';
    }

    public function up(Schema $schema): void
    {
        if (!$this->hasTable($schema, 'albums') || $this->hasColumn($schema, 'albums', 'cover_image_path')) {
            return;
        }

        if ($this->isSqlite()) {
            $this->addSql('ALTER TABLE albums ADD COLUMN cover_image_path VARCHAR(255) DEFAULT NULL');
            return;
        }

        $this->addSql('ALTER TABLE albums ADD cover_image_path VARCHAR(255) DEFAULT NULL');
    }

    public function down(Schema $schema): void
    {
        if ($this->isSqlite()) {
            // SQLite column removal requires a table rebuild; keep this migration forward-only on SQLite.
            return;
        }

        if ($this->hasTable($schema, 'albums') && $this->hasColumn($schema, 'albums', 'cover_image_path')) {
            $this->addSql('ALTER TABLE albums DROP COLUMN cover_image_path');
        }
    }

    private function hasTable(Schema $schema, string $tableName): bool
    {
        return $schema->hasTable($tableName);
    }

    private function hasColumn(Schema $schema, string $tableName, string $columnName): bool
    {
        return $this->hasTable($schema, $tableName) && $schema->getTable($tableName)->hasColumn($columnName);
    }

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