<?php

declare(strict_types=1);

use Phinx\Migration\AbstractMigration;

/**
 * Schema: files with hash, size, and lifecycle status.
 *
 * Files belong to a model and represent physical files in the managed library.
 * Each file has a SHA-256 hash for change detection, size for space tracking,
 * and a lifecycle status (Present, Missing, Updated, Duplicate).
 * The managed path is relative to the library root.
 */
final class CreateFiles extends AbstractMigration
{
    public function change(): void
    {
        $this->table('files', ['id' => 'id', 'primary_key' => 'id'])
            ->addColumn('model_id', 'integer', ['null' => false, 'signed' => false])
            ->addColumn('folder_id', 'integer', ['null' => false, 'signed' => false])
            ->addColumn('name', 'string', ['limit' => 255])
            ->addColumn('managed_path', 'text', ['null' => false])
            ->addColumn('hash', 'string', ['limit' => 64, 'null' => true]) // SHA-256 hex
            ->addColumn('size', 'biginteger', ['null' => true, 'signed' => false])
            ->addColumn('mime_type', 'string', ['limit' => 128, 'null' => true])
            ->addColumn('status', 'string', ['limit' => 32, 'default' => 'Present'])
            ->addColumn('added_at', 'timestamp', ['default' => 'CURRENT_TIMESTAMP', 'timezone' => true])
            ->addColumn('updated_at', 'timestamp', ['default' => 'CURRENT_TIMESTAMP', 'timezone' => true])
            ->addForeignKey('model_id', 'models', 'id', ['delete' => 'CASCADE', 'update' => 'NO_ACTION'])
            ->addForeignKey('folder_id', 'folders', 'id', ['delete' => 'RESTRICT', 'update' => 'NO_ACTION'])
            ->addIndex(['model_id', 'managed_path'], ['unique' => true, 'name' => 'idx_files_model_path'])
            ->addIndex(['hash'], ['name' => 'idx_files_hash'])
            ->addIndex(['status'], ['name' => 'idx_files_status'])
            ->addIndex(['folder_id'], ['name' => 'idx_files_folder_id'])
            ->create();
    }
}