<?php

declare(strict_types=1);

namespace MiniShop\Tests\Contract\Sales\v1;

use MiniShop\Contracts\Sales\V1\Event\OrderConfirmed;
use PHPUnit\Framework\TestCase;

/**
 * Tests de stabilite du contrat sales.v1.OrderConfirmed.
 */
final class OrderConfirmedSchemaTest extends TestCase
{
    public function test_contract_has_required_fields(): void
    {
        $event = new OrderConfirmed(
            orderId: 'order-001',
            customerId: 'cust-001',
            totalInCents: 5500,
            currency: 'EUR',
            lines: [
                ['productName' => 'Widget', 'quantity' => 2, 'unitPriceInCents' => 1500, 'currency' => 'EUR'],
                ['productName' => 'Gadget', 'quantity' => 1, 'unitPriceInCents' => 2500, 'currency' => 'EUR'],
            ],
        );

        self::assertSame('order-001', $event->orderId);
        self::assertSame('cust-001', $event->customerId);
        self::assertSame(5500, $event->totalInCents);
        self::assertSame('EUR', $event->currency);
        self::assertCount(2, $event->lines);
    }

    public function test_contract_serializes_to_stable_json(): void
    {
        $event = new OrderConfirmed(
            orderId: 'order-001',
            customerId: 'cust-001',
            totalInCents: 5500,
            currency: 'EUR',
            lines: [
                ['productName' => 'Widget', 'quantity' => 2, 'unitPriceInCents' => 1500, 'currency' => 'EUR'],
            ],
        );

        $json = json_encode($event, JSON_THROW_ON_ERROR);
        $decoded = json_decode($json, true, flags: JSON_THROW_ON_ERROR);

        self::assertArrayHasKey('orderId', $decoded);
        self::assertArrayHasKey('customerId', $decoded);
        self::assertArrayHasKey('totalInCents', $decoded);
        self::assertArrayHasKey('currency', $decoded);
        self::assertArrayHasKey('lines', $decoded);
    }

    public function test_lines_contain_required_fields(): void
    {
        $event = new OrderConfirmed(
            orderId: 'order-001',
            customerId: 'cust-001',
            totalInCents: 3000,
            currency: 'EUR',
            lines: [
                ['productName' => 'Widget', 'quantity' => 2, 'unitPriceInCents' => 1500, 'currency' => 'EUR'],
            ],
        );

        $json = json_encode($event, JSON_THROW_ON_ERROR);
        $decoded = json_decode($json, true, flags: JSON_THROW_ON_ERROR);
        $line = $decoded['lines'][0];

        self::assertArrayHasKey('productName', $line);
        self::assertArrayHasKey('quantity', $line);
        self::assertArrayHasKey('unitPriceInCents', $line);
        self::assertArrayHasKey('currency', $line);
    }
}