using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json;
using Xylem.Common.CommonCore.Configuration;

namespace Xylem.Common.Utils.UserAccessCtrl
{
    internal class ApplicationHttp
    {
        const String APPLICATION_JSON = "application/json";

        private static readonly HttpClient httpClient = new HttpClient()
        {
            BaseAddress = new Uri(ServiceUrls.LaaProductionAPI)
        };

        internal static Int32 ApplicationId(String software, params String[] functions) 
            => Task
                .Run(async () =>
                {
                    var applicationId = default(Int32);

                    try
                    {
                        using (var httpRequestMessage = new HttpRequestMessage(HttpMethod.Post, "/LaaProductionWeb/api/software/appid"))
                        {
                            httpRequestMessage.Content = new StringContent(
                                mediaType: APPLICATION_JSON,
                                encoding: Encoding.UTF8,
                                content: JsonConvert.SerializeObject(new
                                {
                                    windowsUser = Environment.UserName,
                                    software,
                                    functions
                                }));

                            using (var httpResponseMessage = await httpClient.SendAsync(httpRequestMessage))
                            {
                                if (httpResponseMessage.Content != null)
                                {
                                    var httpResponseContent = await httpResponseMessage.Content.ReadAsStringAsync();

                                    _ = int.TryParse(httpResponseContent, out applicationId);
                                }
                            }
                        }
                    }
                    catch (Exception)
                    {
                        // TODO: Log the error message.
                    }

                    return applicationId;
                })
                .ConfigureAwait(true)
                .GetAwaiter()
                .GetResult();

        internal static IEnumerable<T> GetSoftwareFunction<T>(Int32 appId, String username, String password)
            => Task
                .Run(async () =>
                {
                    var functions = default(IEnumerable<T>);

                    try
                    {
                        using (var httpRequestMessage = new HttpRequestMessage(HttpMethod.Post, "/LaaProductionWeb/api/software/functions"))
                        {
                            httpRequestMessage.Content = new StringContent(
                                mediaType: APPLICATION_JSON,
                                encoding: Encoding.UTF8,
                                content: JsonConvert.SerializeObject(new
                                {
                                    appId,
                                    username,
                                    password,
                                    windowsUser = Environment.UserName,
                                }));

                            using (var httpResponseMessage = await httpClient.SendAsync(httpRequestMessage))
                            {
                                if (httpResponseMessage.IsSuccessStatusCode && httpResponseMessage.Content != null)
                                {
                                    var httpResponseContent = await httpResponseMessage.Content.ReadAsStringAsync();

                                    functions = JsonConvert.DeserializeObject<T[]>(httpResponseContent);
                                }
                            }
                        }
                    }
                    catch (Exception)
                    {
                        // TODO: Log the error message.
                    }

                    return functions;
                })
                .ConfigureAwait(true)
                .GetAwaiter()
                .GetResult();

        internal static void LogAction(String buttonText, String buttonTag, String user, Int32 appId)
            => Task
                .Run(async () =>
                {
                    try
                    {
                        using (var httpRequestMessage = new HttpRequestMessage(HttpMethod.Put, "/LaaProductionWeb/api/software/functions"))
                        {
                            httpRequestMessage.Content = new StringContent(
                                mediaType: APPLICATION_JSON,
                                encoding: Encoding.UTF8,
                                content: JsonConvert.SerializeObject(new
                                {
                                    WindowsUser = Environment.UserName,
                                    Action = "ACCESS",
                                    AppId = appId,
                                    Message = $"User '{user}' accessed '{buttonText}' with Tag: {buttonTag}"
                                }));

                            _ = await httpClient.SendAsync(httpRequestMessage);
                        }
                    }
                    catch (Exception)
                    {
                        // TODO: Log the error message.
                    }
                })
                .ConfigureAwait(true)
                .GetAwaiter()
                .GetResult();
    }
}