<?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('trip_credits_log', function (Blueprint $table) {
            $table->id();
            $table->foreignId('user_id')->constrained()->cascadeOnDelete();
            $table->integer('credits_delta')->comment('Positive = added, negative = deducted');
            $table->string('reason');
            $table->string('reference_id')->nullable()->comment('Trip ID or payment reference');
            $table->timestamps();

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

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