<?php

namespace App\Database\Migrations;

use CodeIgniter\Database\Migration;

class AddLessonSlotIdAndUniqueToSchedulesTable extends Migration
{
    public function up()
    {
        $this->forge->addColumn('schedules', [
            'lesson_slot_id' => [
                'type'       => 'INT',
                'constraint' => 11,
                'unsigned'   => true,
                'null'       => true,
                'after'      => 'teacher_user_id',
            ],
            'is_active' => [
                'type'       => 'TINYINT',
                'constraint' => 1,
                'default'    => 1,
                'after'      => 'room',
            ],
        ]);

        $this->forge->addForeignKey('lesson_slot_id', 'lesson_slots', 'id', 'SET NULL', 'CASCADE', 'schedules_lesson_slot_id_fk');
        $this->forge->addUniqueKey(['class_id', 'lesson_slot_id', 'day_of_week'], 'schedules_class_slot_day_unique');
    }

    public function down()
    {
        $this->forge->dropForeignKey('schedules', 'schedules_lesson_slot_id_fk');
        $this->forge->dropKey('schedules', 'schedules_class_slot_day_unique');
        $this->forge->dropColumn('schedules', 'lesson_slot_id');
        $this->forge->dropColumn('schedules', 'is_active');
    }
}
