<?php

declare(strict_types=1);

namespace Tests\Unit\Infra\Http\Helpers;

use Illuminate\Http\Request as HttpRequest;
use Infra\Http\Helpers\RequestHelper;
use Shared\Pagination;
use Uri\Rfc3986\Uri;

covers(RequestHelper::class);

describe('RequestHelper Unit Tests', function (): void {
    it('prevents direct instantiation but covers constructor', function (): void {
        // GIVEN
        $reflection = new \ReflectionClass(RequestHelper::class);

        // WHEN
        $constructor = $reflection->getConstructor();
        $constructor?->invoke($reflection->newInstanceWithoutConstructor());

        // THEN
        expect(fn () => $reflection->newInstance())
            ->toThrow(\ReflectionException::class);
    });

    it('creates offset and limit pagination when offset or limit query param is present', function (): void {
        // GIVEN
        $request = HttpRequest::create('/api/v1/employees?offset=10&limit=50', 'GET');

        // WHEN
        $pagination = RequestHelper::pagination($request, 25);

        // THEN
        expect($pagination)->toBeInstanceOf(Pagination::class)
            ->and($pagination->from())->toBe(10)
            ->and($pagination->to())->toBe(59);
    });

    it('creates page and page size pagination using pageSize query param', function (): void {
        // GIVEN
        $request = HttpRequest::create('/api/v1/employees?page=2&pageSize=15', 'GET');

        // WHEN
        $pagination = RequestHelper::pagination($request, 25);

        // THEN
        expect($pagination)->toBeInstanceOf(Pagination::class)
            ->and($pagination->from())->toBe(15)
            ->and($pagination->to())->toBe(29);
    });

    it('creates page and page size pagination using per_page query param fallback', function (): void {
        // GIVEN
        $request = HttpRequest::create('/api/v1/employees?page=3&per_page=20', 'GET');

        // WHEN
        $pagination = RequestHelper::pagination($request, 25);

        // THEN
        expect($pagination)->toBeInstanceOf(Pagination::class)
            ->and($pagination->from())->toBe(40)
            ->and($pagination->to())->toBe(59);
    });

    it('creates page and page size pagination using pagination query param fallback', function (): void {
        // GIVEN
        $request = HttpRequest::create('/api/v1/employees?page=1&pagination=30', 'GET');

        // WHEN
        $pagination = RequestHelper::pagination($request, 25);

        // THEN
        expect($pagination)->toBeInstanceOf(Pagination::class)
            ->and($pagination->from())->toBe(0)
            ->and($pagination->to())->toBe(29);
    });

    it('uses default page size when no pagination parameters are supplied', function (): void {
        // GIVEN
        $request = HttpRequest::create('/api/v1/employees', 'GET');

        // WHEN
        $pagination = RequestHelper::pagination($request, 25);

        // THEN
        expect($pagination)->toBeInstanceOf(Pagination::class)
            ->and($pagination->from())->toBe(0)
            ->and($pagination->to())->toBe(24);
    });

    it('converts request URL to native RFC 3986 Uri instance', function (): void {
        // GIVEN
        $request = HttpRequest::create('http://localhost/api/v1/employees?foo=bar', 'GET');

        // WHEN
        $uri = RequestHelper::toUri($request);

        // THEN
        expect($uri)->toBeInstanceOf(Uri::class)
            ->and($uri->toString())->toBe('http://localhost/api/v1/employees');
    });

    it('converts full request URL with query parameters to native RFC 3986 Uri instance', function (): void {
        // GIVEN
        $request = HttpRequest::create('http://localhost/api/v1/employees?page=2&pageSize=10', 'GET');

        // WHEN
        $uri = RequestHelper::toFullUri($request);

        // THEN
        expect($uri)->toBeInstanceOf(Uri::class)
            ->and($uri->toString())->toBe('http://localhost/api/v1/employees?page=2&pageSize=10');
    });
});