<?php

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

class CreateFormResponsesTable extends Migration
{
    public function up()
    {
        Schema::create('form_responses', function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->bigInteger('form_id')->unsigned();
            $table->json('responses');
            $table->nullableTimestamps();
            
            $table->foreign('form_id')->references('id')->on('forms')->onDelete('cascade');
            $table->index(['form_id', 'created_at']);
        });
    }

    public function down()
    {
        Schema::dropIfExists('form_responses');
    }
}