<?php

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

return new class extends Migration
{
    public function up(): void
    {
        Schema::create('campaigns', function (Blueprint $table) {
            $table->id();
            $table->foreignId('user_id')->constrained()->cascadeOnDelete();
            $table->string('name');
            $table->text('description')->nullable();
            $table->string('status', 20)->default('active')->index();
            $table->timestamp('starts_at')->nullable();
            $table->timestamp('ends_at')->nullable();
            $table->timestamps();

            $table->index(['user_id', 'status']);
        });

        Schema::table('qr_codes', function (Blueprint $table) {
            $table->foreignId('campaign_id')->nullable()->after('user_id')->constrained('campaigns')->nullOnDelete();
        });
    }

    public function down(): void
    {
        Schema::table('qr_codes', function (Blueprint $table) {
            $table->dropConstrainedForeignId('campaign_id');
        });

        Schema::dropIfExists('campaigns');
    }
};