using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MConnectSDK;
using Step.Database.Controllers;
using TeamDev.SDK.MVVM;
using static Step.CmsConnectManager.CMSConnectConstants;
using static Step.Model.Constants;
using static Step.Config.ServerConfig;
using Step.Model.DTOModels;

namespace Step.CmsConnectManager
{
    public class MConnectSDKWrapper : IDisposable
    {
        private static MConnectClient _client { get; set; }
        private static CancellationTokenSource _cancellationTokenSource = new CancellationTokenSource();
        private static LicenseData License = new LicenseData();
        private CancellationToken _cancellationToken = _cancellationTokenSource.Token;


        public MConnectSDKWrapper()
        {
            if(_client == null)
                _client = new MConnectClient();
        }

        public async Task<bool> InitSDK()
        {
            // Call SDK Function
            var res = await _client.InitSDKAsync(YAML_CONFIG_FILE, _cancellationToken);

            return ConnectionIsOk(res);
        }

        public async Task<bool> CheckActivationData()
        {
            // Call SDK Function
            var res = await _client.GetClientStatusAsync();

            if (!ConnectionIsOk(res))
                return false;

            if (!res.IsHmiEnrolled)
                return false;

            // Check if connection is ok and if token is needed
            return await GetLicence();    
        }

        public async Task<bool> TryActivation()
        {
            // Setup callback
            Progress<Result> progress = new Progress<Result>();
            progress.ProgressChanged += TryActivation_ProgressChanged;

            // Start SDK progress
            var res = await _client.TryActivationAsync(_cancellationToken, progress);

            if (!ConnectionIsOk(res))
                return false;

            // If machine is already authenticated & enrolled return ok
            if (res.IsAuth && res.IsHmiEnrolled)
            {
                UpdateClients(res);
                return true;
            }

            // If not enrolled
            if (res.IsAuth && !res.IsHmiEnrolled)
            {
                res = await Enroll();
                UpdateClients(res);

                return ConnectionIsOk(res) && res.IsHmiEnrolled;
            }

            if (res.IsHmiEnrolled && !res.IsAuth)
                return await GetLicence();

            return true;
        }

        public async Task<Result> Enroll()
        {
            // Useless progress parameter
            Progress<Result> progress = new Progress<Result>();
            var res = await _client.EnrollMachineAsync(_cancellationToken, progress);

            return res;
        }

        public async Task<bool> GetLicence()
        {
            // Call SDK Function
            var res = await _client.GetLicenseAsync();
            
            // If the API is successful set license data
            if(res.CallResultOk && res.Payload is LicensePayload)
            {
                var lic = await _client.GetLicenseAsync();
                License = (lic.Payload as LicensePayload).Data;
            }

            return ConnectionIsOk(res);
        }

        public async Task<List<UserData>> GetUserOrganizzationList(bool getImage = false)
        {
            // TODO: REMOVE
            var connectionStatus = await CheckActivationData();
            if (!connectionStatus)
                return null;

            // Call SDK function
            var res = await _client.getUserListAsync(getImage);
            
            if (!ConnectionIsOk(res))
                return null;

            if(res.Payload is UserPayload payload)
                return payload.UserList;

            return null;
        }

        public async Task<List<UserData>> GetUserNotImported()
        {
            var res = await GetUserOrganizzationList(true);

            if (res == null)
                return null;

            return res
                .Where(x => x.LoginStatus != UserStatus.IMPORTED)
                .ToList();
        }

        public async Task<UserData> TryUserLogin(string username, string password)
        {
            // Call SDK function
            var res = await _client.TryUserLogin(username, password);

            if (!ConnectionIsOk(res))
                return null;

            // Check if SDK return user data
            if (res.Payload is UserPayload payload && payload.UserList.Count() > 0)
                return payload.UserList.First();

            return null;
        }

        // Callback 
        private void TryActivation_ProgressChanged(object sender, Result res)
        {
            // Check if data are ok
            if (ConnectionIsOk(res) && res.Payload is ActivationPayload activation)
            {
                // Send data to connected client
                MessageServices.Current.Publish(CONNECT_ACTIVATION_NOTIFICATIONS, null, activation);
            }
        }

        private void UpdateClients(object res)
        {
            MessageServices.Current.Publish(CONNECT_GENERAL_DATA, null, res);
        }

        public void Dispose()
        {
            _cancellationTokenSource.Cancel();
        }

        private bool ConnectionIsOk(Result res)
        {
            return res.CallResultOk && res.CloudStatusOk;
        }

        public async Task<bool> ImportConnectUsers(List<UserData> connectUserList)
        {
            UsersController userController = new UsersController();

            //var userList = userController.GetCMSConnectUserList();

            //var deletedUsers = userList.Where(x => !connectUserList.Any(y => x.CmsConnectUserId == y.UserId)).ToList();
            //var newUser = connectUserList.Where(x => !userList.Any(y => x.UserId == y.CmsConnectUserId)).ToList();

            foreach (var user in connectUserList)
            {
                userController.CreateCMSConnectUser(user.Username, "", user.Nome, user.Cognome, Config.ServerConfig.ServerStartupConfig.Language, user.Email, user.UserId, user.IsAdmin);
                var res = await _client.setUserImported(SourceType.LOCAL, user.Username, true);

                if (!ConnectionIsOk(res))
                    return false;
            }

            return true;
        }

        public async Task<bool> RemoveUserFromImported(string username)
        {
            var res = await _client.setUserImported(SourceType.LOCAL, username, false);

            return ConnectionIsOk(res);
        }

        public bool SendMessage(DTOMessageModel message)
        {
            RedisController.SendMessage(message);
            return true;
        }

        //private async void UpdateCmsConnectUsers()
        //{
        //    MConnectSDKWrapper _sdk = new MConnectSDKWrapper();

        //    var connectUserList = await _sdk.GetUserList();

        //    UsersController userController = new UsersController();

        //    var userList = userController.GetCMSConnectUserList();

        //    var deletedUsers = userList.Where(x => !connectUserList.Any(y => x.CmsConnectUserId == y.UserId)).ToList();
        //    var newUser = connectUserList.Where(x => !userList.Any(y => x.UserId == y.CmsConnectUserId)).ToList();

        //    foreach (var user in newUser)
        //    {
        //        userController.CreateCMSConnectUser(user.Username, "", user.Nome, user.Cognome, Config.ServerConfig.ServerStartupConfig.Language, user.Email, user.UserId, user.IsAdmin);
        //    }

        //    foreach (var deletetUser in deletedUsers)
        //    {
        //        userController.DeleteUser(deletetUser);
        //    }
        //}
    }
}