<?php

namespace Tests\Unit\Services\Payments;

use App\Services\Payments\PaymentBalanceService;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\DB;
use Tests\TestCase;

class PaymentBalanceServiceTest extends TestCase
{
    use RefreshDatabase;

    public function test_update_balance_adjusts_payment_totals(): void
    {
        DB::table('payments')->insert([
            'id' => 1,
            'parent_id' => 10,
            'invoice_id' => 1,
            'total_amount' => 100,
            'paid_amount' => 0,
            'balance' => 100,
            'number_of_installments' => 1,
            'payment_method' => 'cash',
            'payment_date' => '2025-01-01',
            'school_year' => '2025-2026',
            'status' => 'Pending',
        ]);

        $service = new PaymentBalanceService();
        $updated = $service->updateBalance(1, 40);

        $this->assertTrue($updated);
        $this->assertDatabaseHas('payments', [
            'id' => 1,
            'paid_amount' => 40,
            'balance' => 60,
        ]);
    }
}