<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Migration_Enhance_role_management extends CI_Migration
{
    public function up()
    {
        if (!$this->db->field_exists('is_system', 'roles')) $this->db->query("ALTER TABLE roles ADD is_system TINYINT(1) NOT NULL DEFAULT 0 AFTER is_active");
        if (!$this->db->field_exists('is_super_admin', 'roles')) $this->db->query("ALTER TABLE roles ADD is_super_admin TINYINT(1) NOT NULL DEFAULT 0 AFTER is_system");
        if (!$this->db->field_exists('created_at', 'roles')) $this->db->query("ALTER TABLE roles ADD created_at DATETIME NULL AFTER is_super_admin");
        if (!$this->db->field_exists('updated_at', 'roles')) $this->db->query("ALTER TABLE roles ADD updated_at DATETIME NULL AFTER created_at");
        $this->db->set('is_system', 1)->update('roles');
        $this->db->where('nama_role', 'Admin')->update('roles', array(
            'is_super_admin' => 1,
            'description' => 'Master Admin: akses penuh seluruh modul, transaksi, posting, approval, konfigurasi, pengguna dan role.',
            'is_active' => 1
        ));
    }
    public function down() { throw new RuntimeException('Gunakan backup untuk rollback manajemen role.'); }
}