<?php

declare(strict_types=1);

namespace MiniShop\Tests\Unit\Invoicing\Domain;

use MiniShop\Invoicing\Domain\Event\InvoiceIssued;
use MiniShop\Invoicing\Domain\Model\BillingParty;
use MiniShop\Invoicing\Domain\Model\Invoice;
use MiniShop\Invoicing\Domain\Model\InvoiceId;
use MiniShop\Invoicing\Domain\Model\InvoiceLine;
use MiniShop\Invoicing\Domain\Model\InvoiceStatus;
use MiniShop\Invoicing\Domain\Model\TaxRate;
use PHPUnit\Framework\TestCase;

final class InvoiceTest extends TestCase
{
    public function test_issue_invoice_for_external_order(): void
    {
        $invoice = $this->issueInvoice();

        self::assertSame(InvoiceStatus::Issued, $invoice->status());
        self::assertSame('ext-order-1', $invoice->externalOrderId);
        self::assertCount(1, $invoice->lines());
    }

    public function test_issue_invoice_records_event(): void
    {
        $invoice = $this->issueInvoice();

        $events = $invoice->releaseEvents();
        self::assertCount(1, $events);
        self::assertInstanceOf(InvoiceIssued::class, $events[0]);
    }

    public function test_invoice_without_lines_throws(): void
    {
        $this->expectException(\DomainException::class);

        Invoice::issueForExternalOrder(
            InvoiceId::fromString('inv-1'),
            'INV-000001',
            'ext-order-1',
            new BillingParty('Acme', '1 Rue Test'),
            [],
            new \DateTimeImmutable(),
        );
    }

    public function test_total_coherent_with_lines(): void
    {
        $invoice = Invoice::issueForExternalOrder(
            InvoiceId::fromString('inv-1'),
            'INV-000001',
            'ext-order-1',
            new BillingParty('Acme', '1 Rue Test'),
            [
                new InvoiceLine('Widget', 2, 1000, 'EUR', TaxRate::standard()),
                new InvoiceLine('Gadget', 1, 2500, 'EUR', TaxRate::standard()),
            ],
            new \DateTimeImmutable(),
        );

        self::assertSame(4500, $invoice->totalExclTax());
        self::assertSame(5400, $invoice->totalInclTax());
    }

    public function test_mark_as_sent(): void
    {
        $invoice = $this->issueInvoice();

        $invoice->markAsSent();

        self::assertSame(InvoiceStatus::Sent, $invoice->status());
    }

    public function test_mark_as_sent_twice_throws(): void
    {
        $this->expectException(\DomainException::class);

        $invoice = $this->issueInvoice();
        $invoice->markAsSent();
        $invoice->markAsSent();
    }

    private function issueInvoice(): Invoice
    {
        return Invoice::issueForExternalOrder(
            InvoiceId::fromString('inv-1'),
            'INV-000001',
            'ext-order-1',
            new BillingParty('Acme', '1 Rue Test'),
            [new InvoiceLine('Widget', 2, 1500, 'EUR', TaxRate::standard())],
            new \DateTimeImmutable(),
        );
    }
}