// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
using Microsoft.AspNet.Builder;
using Microsoft.AspNet.TestHost;
using Newtonsoft.Json;
using Xunit;

namespace Microsoft.AspNet.Mvc.FunctionalTests
{
    public class JsonOutputFormatterTests
    {
        private readonly IServiceProvider _provider = TestHelper.CreateServices("FormatterWebSite");
        private readonly Action<IApplicationBuilder> _app = new FormatterWebSite.Startup().Configure;

        [Fact]
        public async Task JsonOutputFormatter_ReturnsIndentedJson()
        {
            // Arrange
            var user = new FormatterWebSite.User()
            {
                Id = 1,
                Alias = "john",
                description = "Administrator",
                Designation = "Administrator",
                Name = "John Williams"
            };

            var serializerSettings = new JsonSerializerSettings();
            serializerSettings.Formatting = Formatting.Indented;
            var expectedBody = JsonConvert.SerializeObject(user, serializerSettings);

            var server = TestServer.Create(_provider, _app);
            var client = server.CreateClient();

            // Act
            var response = await client.GetAsync("http://localhost/JsonFormatter/ReturnsIndentedJson");

            // Assert
            var actualBody = await response.Content.ReadAsStringAsync();
            Assert.Equal(expectedBody, actualBody);
        }

        [Fact]
        public async Task SerializableErrorIsReturnedInExpectedFormat()
        {
            // Arrange
            var server = TestServer.Create(_provider, _app);
            var client = server.CreateClient();

            var input = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" +
                "<Employee xmlns=\"http://schemas.datacontract.org/2004/07/FormatterWebSite\">" +
                "<Id>2</Id><Name>foo</Name></Employee>";

            var expectedOutput = "{\"employee.Id\":[\"The field Id must be between 10 and 100." +
                    "\"],\"employee.Name\":[\"The field Name must be a string or array type with" +
                    " a minimum length of '15'.\"]}";
            var request = new HttpRequestMessage(HttpMethod.Post, "http://localhost/SerializableError/CreateEmployee");
            request.Headers.Accept.Add(MediaTypeWithQualityHeaderValue.Parse("application/json"));
            request.Content = new StringContent(input, Encoding.UTF8, "application/xml");

            // Act
            var response = await client.SendAsync(request);

            // Assert
            Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
            Assert.Equal(expectedOutput, await response.Content.ReadAsStringAsync());
        }
    }
}