<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

return new class extends Migration
{
    /**
     * Run the migrations.
     */
    public function up(): void
    {
        Schema::table('products', function (Blueprint $table) {
            // 기존 외래 키 제약조건 삭제
            $table->dropForeign(['category_id']);
        });

        Schema::table('products', function (Blueprint $table) {
            // category_id를 nullable로 변경하고 기본값 null 설정
            $table->unsignedBigInteger('category_id')->nullable()->default(null)->change();

            // 외래 키 재설정 (SET NULL)
            $table->foreign('category_id')
                ->references('id')
                ->on('categories')
                ->onDelete('set null')
                ->onUpdate('cascade');
        });
    }

    /**
     * Reverse the migrations.
     */
    public function down(): void
    {
        Schema::table('products', function (Blueprint $table) {
            $table->dropForeign(['category_id']);
        });

        Schema::table('products', function (Blueprint $table) {
            $table->unsignedBigInteger('category_id')->nullable(false)->default(0)->change();

            $table->foreign('category_id')
                ->references('id')
                ->on('categories')
                ->onDelete('restrict')
                ->onUpdate('cascade');
        });
    }
};
