// ==========================================================================
//  Squidex Headless CMS
// ==========================================================================
//  Copyright (c) Squidex UG (haftungsbeschränkt)
//  All rights reserved. Licensed under the MIT license.
// ==========================================================================

using System;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using Xunit;

#pragma warning disable SA1122 // Use string.Empty for empty strings

namespace Squidex.Infrastructure.Http
{
    public class DumpFormatterTests
    {
        [Fact]
        public void Should_format_dump_without_response()
        {
            var httpRequest = CreateRequest();

            var dump = DumpFormatter.BuildDump(httpRequest, null, null, null, TimeSpan.FromMinutes(1), true);

            var expected = CreateExpectedDump(
                "Request:",
                "POST: https://cloud.squidex.io/ HTTP/2.0",
                "User-Agent: Squidex/1.0",
                "Accept-Language: de; en",
                "Accept-Encoding: UTF-8",
                "",
                "",
                "Response:",
                "Timeout after 00:01:00");

            Assert.Equal(expected, dump);
        }

        [Fact]
        public void Should_format_dump_without_content()
        {
            var httpRequest = CreateRequest();
            var httpResponse = CreateResponse();

            var dump = DumpFormatter.BuildDump(httpRequest, httpResponse, null, null, TimeSpan.FromMinutes(1), false);

            var expected = CreateExpectedDump(
                "Request:",
                "POST: https://cloud.squidex.io/ HTTP/2.0",
                "User-Agent: Squidex/1.0",
                "Accept-Language: de; en",
                "Accept-Encoding: UTF-8",
                "",
                "",
                "Response:",
                "HTTP/1.1 200 OK",
                "Transfer-Encoding: UTF-8",
                "Trailer: Expires",
                "",
                "Elapsed: 00:01:00");

            Assert.Equal(expected, dump);
        }

        [Fact]
        public void Should_format_dump_with_content_without_timeout()
        {
            var httpRequest = CreateRequest(new StringContent("Hello Squidex", Encoding.UTF8, "text/plain"));
            var httpResponse = CreateResponse(new StringContent("Hello Back", Encoding.UTF8, "text/plain"));

            var dump = DumpFormatter.BuildDump(httpRequest, httpResponse, "Hello Squidex", "Hello Back", TimeSpan.FromMinutes(1), false);

            var expected = CreateExpectedDump(
                "Request:",
                "POST: https://cloud.squidex.io/ HTTP/2.0",
                "User-Agent: Squidex/1.0",
                "Accept-Language: de; en",
                "Accept-Encoding: UTF-8",
                "Content-Type: text/plain; charset=utf-8",
                "",
                "Hello Squidex",
                "",
                "",
                "Response:",
                "HTTP/1.1 200 OK",
                "Transfer-Encoding: UTF-8",
                "Trailer: Expires",
                "Content-Type: text/plain; charset=utf-8",
                "",
                "Hello Back",
                "",
                "Elapsed: 00:01:00");

            Assert.Equal(expected, dump);
        }

        private static HttpRequestMessage CreateRequest(HttpContent content = null)
        {
            var request = new HttpRequestMessage(HttpMethod.Post, new Uri("https://cloud.squidex.io"));

            request.Headers.UserAgent.Add(new ProductInfoHeaderValue("Squidex", "1.0"));
            request.Headers.AcceptLanguage.Add(new StringWithQualityHeaderValue("de"));
            request.Headers.AcceptLanguage.Add(new StringWithQualityHeaderValue("en"));
            request.Headers.AcceptEncoding.Add(new StringWithQualityHeaderValue("UTF-8"));

            request.Content = content;

            return request;
        }

        private static HttpResponseMessage CreateResponse(HttpContent content = null)
        {
            var response = new HttpResponseMessage(HttpStatusCode.OK);

            response.Headers.TransferEncoding.Add(new TransferCodingHeaderValue("UTF-8"));
            response.Headers.Trailer.Add("Expires");

            response.Content = content;

            return response;
        }

        private static string CreateExpectedDump(params string[] input)
        {
            return string.Join(Environment.NewLine, input) + Environment.NewLine;
        }
    }
}