<?php

namespace App\Database\Migrations;

use CodeIgniter\Database\Migration;

class CreateReceiptCategoryMap extends Migration
{
    public function up(): void
    {
        $this->forge->addField([
            'id'          => ['type' => 'INT', 'constraint' => 11, 'unsigned' => true, 'auto_increment' => true],
            'item_name'   => ['type' => 'VARCHAR', 'constraint' => 255],
            'category_id' => ['type' => 'INT', 'constraint' => 11, 'unsigned' => true],
            'updated_at'  => ['type' => 'DATETIME', 'null' => true],
        ]);
        $this->forge->addKey('id', true);
        // Znormalizowana nazwa pozycji jest kluczem uczenia (jedno mapowanie na nazwe).
        $this->forge->addUniqueKey('item_name');
        $this->forge->addForeignKey('category_id', 'categories', 'id', 'CASCADE', 'CASCADE');
        $this->forge->createTable('receipt_category_map', true, ['ENGINE' => 'InnoDB']);
    }

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