<?php

declare(strict_types=1);

namespace MiniShop\Tests\Contract\Sales\v1;

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

/**
 * Tests de stabilite du contrat sales.v1.OrderPlaced.
 * Garantit que le schema est stable et ne casse pas les consommateurs downstream.
 */
final class OrderPlacedSchemaTest extends TestCase
{
    public function test_contract_has_required_fields(): void
    {
        $event = new OrderPlaced(
            orderId: 'order-001',
            customerId: 'cust-001',
            totalInCents: 3000,
            currency: 'EUR',
            placedAt: '2026-01-15T10:30:00+00:00',
            lines: [
                ['productName' => 'Widget', 'quantity' => 2, 'unitPriceInCents' => 1500, 'currency' => 'EUR'],
            ],
        );

        self::assertSame('order-001', $event->orderId);
        self::assertSame('cust-001', $event->customerId);
        self::assertSame(3000, $event->totalInCents);
        self::assertSame('EUR', $event->currency);
        self::assertSame('2026-01-15T10:30:00+00:00', $event->placedAt);
        self::assertCount(1, $event->lines);
    }

    public function test_contract_serializes_to_stable_json(): void
    {
        $event = new OrderPlaced(
            orderId: 'order-001',
            customerId: 'cust-001',
            totalInCents: 3000,
            currency: 'EUR',
            placedAt: '2026-01-15T10:30:00+00:00',
            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('placedAt', $decoded);
        self::assertArrayHasKey('lines', $decoded);
    }

    public function test_contract_deserializes_from_json(): void
    {
        $json = '{"orderId":"order-001","customerId":"cust-001","totalInCents":3000,"currency":"EUR","placedAt":"2026-01-15T10:30:00+00:00","lines":[{"productName":"Widget","quantity":2,"unitPriceInCents":1500,"currency":"EUR"}]}';

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

        $event = new OrderPlaced(
            orderId: $decoded['orderId'],
            customerId: $decoded['customerId'],
            totalInCents: $decoded['totalInCents'],
            currency: $decoded['currency'],
            placedAt: $decoded['placedAt'],
            lines: $decoded['lines'],
        );

        self::assertSame('order-001', $event->orderId);
        self::assertSame(3000, $event->totalInCents);
    }
}