using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.Timers;
using InABox.Clients;
using InABox.Configuration;
using InABox.Core;
using InABox.Mobile;
using Syncfusion.SfPdfViewer.XForms;
using Xamarin.Essentials;
using Xamarin.Forms;
using XF.Material.Forms.UI.Dialogs;
using Timer = System.Threading.Timer;

namespace comal.timesheets
{
    class SettingsBinding : ConnectionSettings
    {
        public String DeviceID { get; set; }
        public String AppVersion { get; set; }

        public void Load(ConnectionSettings settings)
        {
            URL = settings.URL;
            Port = settings.Port;
            UserID = settings.UserID;
            Password = settings.Password;
        }

        public void Unload(ConnectionSettings settings)
        {
            settings.URL = URL;
            settings.Port = Port;
            settings.UserID = UserID;
            settings.Password = Password;
        }
    }

    public partial class Settings : ContentPage
    {
        SettingsBinding binding = new SettingsBinding();
        int count = 0;
        string s = "";
        public bool SettingsChanged { get; private set; }

        public Settings()
        {
            InitializeComponent();
            binding.Load(App.Settings);
            binding.DeviceID = MobileUtils.GetDeviceID();
            binding.AppVersion = MobileUtils.AppVersion.InstalledVersionNumber;

            this.BindingContext = binding;

            NavigationPage.SetHasBackButton(this, false);
        }

        private async void ExitBtn_Clicked(object sender, EventArgs e)
        {
            using (await MaterialDialog.Instance.LoadingDialogAsync(message: "Working"))
            {
                //Syncfusion Masked editor still needs access before popping the page       
                Thread.Sleep(1000);
                Navigation.PopAsync();
            }
        }

        private void SaveBtn_Clicked(object sender, EventArgs e)
        {
            ValidateAppData();
        }

        private async void ValidateAppData()
        {
            try
            {
                using (await MaterialDialog.Instance.LoadingDialogAsync(message: "Validating"))
                {
                    ClientFactory.InvalidateUser();
                    binding.Unload(App.Settings);
                    new LocalConfiguration<ConnectionSettings>().Delete();
                    new LocalConfiguration<ConnectionSettings>().Save(App.Settings);
                    App.Settings = new LocalConfiguration<ConnectionSettings>().Load();
                    ClientFactory.SetClientType(typeof(JsonClient<>), "TimeBench", MobileUtils.AppVersion.InstalledVersionNumber + GlobalVariables.DeviceString, new object[] { App.Settings.URL, App.Settings.Port, true });

                    GlobalVariables.ChangeUser = true;
                    GlobalVariables.InternalOnAppearing = true;
                    if (App.Current.Properties.ContainsKey("SessionID"))
                        App.Current.Properties.Remove("SessionID");
                    //Syncfusion Masked editor still needs access before popping the page                    
                    Thread.Sleep(1000);
                    Navigation.PopToRootAsync(true);
                    PINLoginPage pin = new PINLoginPage();
                    Navigation.PushAsync(pin, true);
                }
                return;
            }
            catch { }
        }

        protected override async void OnAppearing()
        {
            bool isLatest = true;
            try
            {
                isLatest = await MobileUtils.AppVersion.IsUsingLatestVersion();
            }
            catch (Exception eLatest)
            {

            }
            if (isLatest)
            {
                updateVersionBtn.IsEnabled = false;
                updateVersionBtn.Text = "App is up to date";
            }
            else if (!isLatest)
            {
                string latestVersionNumber = await MobileUtils.AppVersion.GetLatestVersionNumber();
                updateVersionBtn.IsEnabled = true;
                updateVersionBtn.Text = "Update App Version (" + latestVersionNumber + ")";
            }

            const string errorFilename = "Fatal.log";
            var libraryPath = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
            var errorFilePath = Path.Combine(libraryPath, errorFilename);

            if (File.Exists(errorFilePath))
            {
                sendErrorsBtn.IsEnabled = true;
            }

            //if (Application.Current.Properties.ContainsKey("IsSharedDevice"))
            //{
            //    if (Application.Current.Properties["IsSharedDevice"].Equals("True"))
            //    {
            //        sharedDeviceRb.IsChecked = true;
            //    }
            //}

            base.OnAppearing();
        }

        private async void ChangePasswordBtn_Clicked(object sender, EventArgs e)
        {
            if (count == 3)
            {
                DisplayAlert("Alert", "You have attempted incorrectly " + count + " times and cannot try again. Please contact your system administrator.", "OK");
                return;
            }
            CoreTable table = new Client<User>().Query(new Filter<User>(x => x.UserID).IsEqualTo(ClientFactory.UserID),
                new Columns<User>(x => x.Password));
            if (table.Rows.Any())
            {
                string p = table.Rows.FirstOrDefault().Values[0].ToString();
                string userInput = await DisplayPromptAsync("Alert", "Enter Current Password", "OK", "Cancel");
                if (!string.IsNullOrWhiteSpace(userInput) && userInput != "Cancel")
                {
                    if (p != userInput)
                    {
                        count++;
                        DisplayAlert("Alert", "Password is incorrect. You have attempted " + count + " times out of 3.", "OK");
                        return;
                    }
                    else if (p == userInput)
                    {
                        PasswordResetPage page = new PasswordResetPage(ClientFactory.UserID);
                        page.OnPasswordReset += (() =>
                        {
                            Navigation.PopToRootAsync();
                            PINLoginPage pinpage = new PINLoginPage();
                            Navigation.PushAsync(pinpage);
                        });
                        Navigation.PushAsync(page);
                    }
                }
            }
        }

        private async void UpdateVersionBtn_Clicked(object sender, EventArgs e)
        {
            Dispatcher.BeginInvokeOnMainThread(() => { MobileUtils.AppVersion.OpenAppInStore(); });
        }

        private void UserID_Changed(object sender, EventArgs e)
        {
            if (!string.IsNullOrWhiteSpace(UserID.Text))
            {
                UserID.Text = UserID.Text.Trim();
            }
        }

        private void UserPassword_Changed(object sender, EventArgs e)
        {
            if (!string.IsNullOrWhiteSpace(UserID.Text))
            {
                Password.Text = Password.Text.Trim();
            }
            //if (!string.IsNullOrWhiteSpace(Password.Value.ToString()))
            //{
            //    Password.Value = Password.Value.ToString().Trim();
            //    s = Password.Value.ToString();
            //    showPassword.Text = s;
            //}
            //else
            //    s = "";
        }

        async void BackgroundLoadProducts()
        {
            await Task.Run(() =>
            {
                if (!GlobalVariables.ProductsLoaded/* && ClientFactory.IsAllowed<CanViewStockLocations>()*/)
                {
                    GlobalVariables.ProductsLoaded = false;
                    ProductsLoader productsLoader = new ProductsLoader();

                    GlobalVariables.ProductShells = productsLoader.ProductShells;
                    GlobalVariables.ProductsLoaded = true;
                }
            });
        }

        private void sharedDeviceRb_Changed(object sender, EventArgs e)
        {
            //string isSharedDevice = "IsSharedDevice";
            //if ((sender as CheckBox).IsChecked)
            //{
            //    if (!Application.Current.Properties.ContainsKey(isSharedDevice))
            //    {
            //        Application.Current.Properties.Add(isSharedDevice, "True");
            //        URL.Text = "http://mobile.com-al.com.au";
            //        UserID.Text = "";
            //        Password.Value = "";
            //    }
            //    else
            //    {
            //        Application.Current.Properties[isSharedDevice] = "True";
            //        URL.Text = "http://mobile.com-al.com.au";
            //        UserID.Text = "";
            //        Password.Value = "";
            //    }
            //}
            //else
            //{
            //    if (Application.Current.Properties.ContainsKey(isSharedDevice))
            //    {
            //        Application.Current.Properties[isSharedDevice] = "False";
            //    }
            //}
        }

        private void ShowPW_Tapped(object sender, EventArgs e)
        {
            //passwordOne.Width = new GridLength(0, GridUnitType.Absolute);
            //passwordTwo.Width = new GridLength(1, GridUnitType.Star);
            //Task.Run(() =>
            //{
            //    Thread.Sleep(2500);
            //    ShowMaskedText();
            //});
        }

        private void ShowMaskedText()
        {
            //Device.BeginInvokeOnMainThread(() =>
            //{
            //    passwordTwo.Width = new GridLength(0, GridUnitType.Absolute);
            //    passwordOne.Width = new GridLength(1, GridUnitType.Star);
            //});
        }

        private async void ClearStorageBtn_Clicked(object sender, EventArgs e)
        {
            string chosenOption = await DisplayActionSheet("Confirm Clear? This will also log you out", "Cancel", null, "Yes", "No");
            switch (chosenOption)
            {
                case "Cancel":
                    return;
                default:
                    return;
                case "No":
                    return;
                case "Yes":
                    RemoveDataFromSecureStorage();
                    ClearConnectionSettings();
                    ValidateAppData();
                    break;
            }
        }

        private void RemoveDataFromSecureStorage()
        {
            try
            {
                SecureStorage.Remove(GlobalVariables.CacheURLString);
                SecureStorage.Remove(GlobalVariables.CacheURLString);
                SecureStorage.Remove(GlobalVariables.CacheURLString);
                SecureStorage.Remove(GlobalVariables.CacheURLString);
            }
            catch
            { }
        }

        private void ClearConnectionSettings()
        {
            try
            {
                new LocalConfiguration<ConnectionSettings>().Delete();
                MobileUtils.LoadDemoSettings(App.Settings);
                binding.Load(App.Settings);
            }
            catch { }
        }


        //private void DocsURL_Changed(object sender, EventArgs e)
        //{
        //    if (!string.IsNullOrWhiteSpace(docsURL.Text))
        //    {
        //        if (!App.Current.Properties.ContainsKey("DocsURL"))
        //        {
        //            App.Current.Properties.Add("DocsURL", docsURL.Text);
        //        }
        //        else if (App.Current.Properties.ContainsKey("DocsURL"))
        //        {
        //            App.Current.Properties["DocsURL"] = docsURL.Text;
        //        }
        //    }           
        //}

        //private void ClearDocsBtn_Clicked(object sender, EventArgs e)
        //{
        //    if (App.Current.Properties.ContainsKey("DocsURL"))
        //    {
        //        App.Current.Properties.Remove("DocsURL");
        //        DisplayAlert("Success", "", "OK");
        //    }
        //}

        private async void SendErrorsBtn_Clicked(object sender, EventArgs e)
        {
            try
            {
                const string errorFilename = "Fatal.log";
                string libraryPath = "";
                if (Device.RuntimePlatform.Equals(Device.Android))               
                    libraryPath = Environment.GetFolderPath(Environment.SpecialFolder.Personal);               
                else if (Device.RuntimePlatform.Equals(Device.iOS))               
                    libraryPath = Environment.GetFolderPath(Environment.SpecialFolder.Resources);
                                
                var errorFilePath = Path.Combine(libraryPath, errorFilename);

                if (!File.Exists(errorFilePath))
                {
                    return;
                }

                var errorText = File.ReadAllText(errorFilePath);

                var message = new EmailMessage
                {
                    Subject = "Error Logs from " + GlobalVariables.EmpName,
                    Body = errorText,
                    To = new List<string> { "nick@prsdigital.com.au" }
                };

                await Email.ComposeAsync(message);

                File.Delete(errorFilePath);
            }
            catch { }
        }

    }
}