<?php
namespace Tests\Unit\Domain\Order;

use PHPUnit\Framework\TestCase;
use Domain\Order\OrderRepository;

class OrderRepositoryTest extends TestCase
{
    public function testOrderStatusesReturnsMappedArray(): void
    {
        $mockDb = $this->createMock(\medoo::class);
        $mockDb->method('select')
            ->willReturnCallback(function ($table, $columns, $where) {
                if ($table === 'pp_shop_statuses') {
                    return [
                        ['id' => 0, 'status' => 'Nowe'],
                        ['id' => 4, 'status' => 'W realizacji'],
                    ];
                }

                return [];
            });

        $repository = new OrderRepository($mockDb);
        $statuses = $repository->orderStatuses();

        $this->assertIsArray($statuses);
        $this->assertSame('Nowe', $statuses[0]);
        $this->assertSame('W realizacji', $statuses[4]);
    }

    public function testNextAndPrevOrderIdReturnNullForInvalidInput(): void
    {
        $mockDb = $this->createMock(\medoo::class);
        $mockDb->expects($this->never())->method('get');

        $repository = new OrderRepository($mockDb);

        $this->assertNull($repository->nextOrderId(0));
        $this->assertNull($repository->prevOrderId(0));
    }

    public function testListForAdminReturnsItemsAndTotal(): void
    {
        $mockDb = $this->createMock(\medoo::class);

        $resultSetCount = new class {
            public function fetchAll(): array
            {
                return [[3]];
            }
        };

        $resultSetData = new class {
            public function fetchAll(): array
            {
                return [
                    [
                        'id' => 11,
                        'number' => '2026/02/001',
                        'date_order' => '2026-02-15 10:00:00',
                        'client' => 'Jan Kowalski',
                        'order_email' => 'jan@example.com',
                        'address' => 'Testowa 1, 00-000 Warszawa',
                        'status' => 0,
                        'client_phone' => '111222333',
                        'transport' => 'Kurier',
                        'payment_method' => 'Przelew',
                        'summary' => '123.45',
                        'paid' => 1,
                        'total_orders' => 2,
                    ],
                ];
            }
        };

        $callIndex = 0;
        $mockDb->method('query')
            ->willReturnCallback(function () use (&$callIndex, $resultSetCount, $resultSetData) {
                $callIndex++;
                return $callIndex === 1 ? $resultSetCount : $resultSetData;
            });

        $repository = new OrderRepository($mockDb);
        $result = $repository->listForAdmin([], 'date_order', 'DESC', 1, 15);

        $this->assertSame(3, $result['total']);
        $this->assertCount(1, $result['items']);
        $this->assertSame(11, $result['items'][0]['id']);
        $this->assertSame('2026/02/001', $result['items'][0]['number']);
        $this->assertSame(2, $result['items'][0]['total_orders']);
        $this->assertSame(1, $result['items'][0]['paid']);
    }

    // --- Frontend method tests ---

    public function testFindIdByHashReturnsIdWhenFound(): void
    {
        $mockDb = $this->createMock(\medoo::class);
        $mockDb->method('get')
            ->with('pp_shop_orders', 'id', ['hash' => 'abc123'])
            ->willReturn('42');

        $repository = new OrderRepository($mockDb);
        $this->assertSame(42, $repository->findIdByHash('abc123'));
    }

    public function testFindIdByHashReturnsNullWhenNotFound(): void
    {
        $mockDb = $this->createMock(\medoo::class);
        $mockDb->method('get')->willReturn(null);

        $repository = new OrderRepository($mockDb);
        $this->assertNull($repository->findIdByHash('nonexistent'));
    }

    public function testFindIdByHashReturnsNullForEmptyHash(): void
    {
        $mockDb = $this->createMock(\medoo::class);
        $mockDb->expects($this->never())->method('get');

        $repository = new OrderRepository($mockDb);
        $this->assertNull($repository->findIdByHash(''));
        $this->assertNull($repository->findIdByHash('   '));
    }

    public function testFindHashByIdReturnsHashWhenFound(): void
    {
        $mockDb = $this->createMock(\medoo::class);
        $mockDb->method('get')
            ->with('pp_shop_orders', 'hash', ['id' => 42])
            ->willReturn('abc123hash');

        $repository = new OrderRepository($mockDb);
        $this->assertSame('abc123hash', $repository->findHashById(42));
    }

    public function testFindHashByIdReturnsNullForInvalidId(): void
    {
        $mockDb = $this->createMock(\medoo::class);
        $mockDb->expects($this->never())->method('get');

        $repository = new OrderRepository($mockDb);
        $this->assertNull($repository->findHashById(0));
        $this->assertNull($repository->findHashById(-1));
    }

    public function testOrderDetailsFrontendByIdReturnsArrayWithProducts(): void
    {
        $mockDb = $this->createMock(\medoo::class);
        $mockDb->method('get')
            ->willReturn(['id' => 1, 'number' => '2026/02/001', 'coupon_id' => null]);
        $mockDb->method('select')
            ->willReturn([['product_id' => 10, 'name' => 'Test Product']]);

        $repository = new OrderRepository($mockDb);
        $result = $repository->orderDetailsFrontend(1);

        $this->assertIsArray($result);
        $this->assertSame(1, $result['id']);
        $this->assertIsArray($result['products']);
        $this->assertCount(1, $result['products']);
    }

    public function testOrderDetailsFrontendByHashReturnsArrayWithProducts(): void
    {
        $mockDb = $this->createMock(\medoo::class);
        $mockDb->method('get')
            ->willReturn(['id' => 5, 'number' => '2026/02/005', 'hash' => 'testhash']);
        $mockDb->method('select')
            ->willReturn([]);

        $repository = new OrderRepository($mockDb);
        $result = $repository->orderDetailsFrontend(null, 'testhash');

        $this->assertIsArray($result);
        $this->assertSame(5, $result['id']);
        $this->assertIsArray($result['products']);
    }

    public function testOrderDetailsFrontendReturnsNullWhenNotFound(): void
    {
        $mockDb = $this->createMock(\medoo::class);
        $mockDb->method('get')->willReturn(null);

        $repository = new OrderRepository($mockDb);
        $this->assertNull($repository->orderDetailsFrontend(999));
        $this->assertNull($repository->orderDetailsFrontend(null, 'nonexistent'));
    }

    public function testGenerateOrderNumberFormatsCorrectly(): void
    {
        $mockDb = $this->createMock(\medoo::class);

        $resultSet = new class {
            public function fetchAll(): array
            {
                return [[5]];
            }
        };

        $mockDb->method('query')->willReturn($resultSet);

        $repository = new OrderRepository($mockDb);
        $number = $repository->generateOrderNumber();

        $expectedPrefix = date('Y/m') . '/';
        $this->assertStringStartsWith($expectedPrefix, $number);
        $this->assertSame($expectedPrefix . '006', $number);
    }

    public function testGenerateOrderNumberStartsAt001(): void
    {
        $mockDb = $this->createMock(\medoo::class);

        $resultSet = new class {
            public function fetchAll(): array
            {
                return [[null]];
            }
        };

        $mockDb->method('query')->willReturn($resultSet);

        $repository = new OrderRepository($mockDb);
        $number = $repository->generateOrderNumber();

        $expectedPrefix = date('Y/m') . '/';
        $this->assertSame($expectedPrefix . '001', $number);
    }
}