<?php

declare(strict_types=1);

namespace App\Database\Migrations;

use CodeIgniter\Database\Migration;

/**
 * Processing queue. States: queued -> processing -> completed | failed,
 * with cancelled and expired as terminal cleanup states.
 */
final class CreateJobs extends Migration
{
    public function up(): void
    {
        $this->forge->addField([
            'id'            => ['type' => 'CHAR', 'constraint' => 36],
            // anonymous, hashed — no raw identifiers are ever stored
            'session_id'    => ['type' => 'VARCHAR', 'constraint' => 64],
            'ip_hash'       => ['type' => 'CHAR', 'constraint' => 32],
            'tool_id'       => ['type' => 'INT', 'unsigned' => true, 'null' => true],
            'operation'     => ['type' => 'VARCHAR', 'constraint' => 40],
            'params'        => ['type' => 'JSON', 'null' => true],
            'input_file'    => ['type' => 'VARCHAR', 'constraint' => 255, 'null' => true],
            'input_name'    => ['type' => 'VARCHAR', 'constraint' => 255, 'null' => true],
            'input_size'    => ['type' => 'BIGINT', 'unsigned' => true, 'default' => 0],
            'input_mime'    => ['type' => 'VARCHAR', 'constraint' => 100, 'null' => true],
            'output_file'   => ['type' => 'VARCHAR', 'constraint' => 255, 'null' => true],
            'output_name'   => ['type' => 'VARCHAR', 'constraint' => 255, 'null' => true],
            'output_size'   => ['type' => 'BIGINT', 'unsigned' => true, 'default' => 0],
            'status'        => ['type' => 'ENUM', 'constraint' => ['queued', 'processing', 'completed', 'failed', 'cancelled', 'expired'], 'default' => 'queued'],
            'progress'      => ['type' => 'TINYINT', 'unsigned' => true, 'default' => 0],
            'stage'         => ['type' => 'VARCHAR', 'constraint' => 32, 'default' => 'queued'],
            'error'         => ['type' => 'TEXT', 'null' => true],
            'priority'      => ['type' => 'TINYINT', 'constraint' => 3, 'default' => 5],
            'attempts'      => ['type' => 'TINYINT', 'unsigned' => true, 'default' => 0],
            'source'        => ['type' => 'ENUM', 'constraint' => ['web', 'api'], 'default' => 'web'],
            'download_count'=> ['type' => 'INT', 'unsigned' => true, 'default' => 0],
            'created_at'    => ['type' => 'DATETIME', 'null' => true],
            'started_at'    => ['type' => 'DATETIME', 'null' => true],
            'completed_at'  => ['type' => 'DATETIME', 'null' => true],
            'expires_at'    => ['type' => 'DATETIME', 'null' => true],
        ]);
        $this->forge->addPrimaryKey('id');
        $this->forge->addKey('status');
        $this->forge->addKey('created_at');
        $this->forge->addKey('expires_at');
        $this->forge->addKey('session_id');
        $this->forge->addForeignKey('tool_id', 'tools', 'id', 'SET NULL', 'CASCADE');
        $this->forge->createTable('jobs', true);
    }

    public function down(): void
    {
        $this->forge->dropTable('jobs', true);
    }
}