using SmartCharging.Common;
using SmartCharging.DataModel;
using SmartCharging.Net;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using System.Text.RegularExpressions;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.Graphics.Display;
using Windows.UI;
using Windows.UI.Core;
using Windows.UI.ViewManagement;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;

// The Basic Page item template is documented at http://go.microsoft.com/fwlink/?LinkID=390556

namespace SmartCharging
{
    /// <summary>
    /// An empty page that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class SiteOwnerRegistrationPage : Page
    {
        private NavigationHelper navigationHelper;
        private ObservableDictionary defaultViewModel = new ObservableDictionary();
        private SiteType selectedSiteType;
        private SmartChargeAPI SMA;
        private ErrorHandler errorHandler;

        public SiteOwnerRegistrationPage()
        {
            this.InitializeComponent();

            this.navigationHelper = new NavigationHelper(this);
            this.navigationHelper.LoadState += this.NavigationHelper_LoadState;
            this.navigationHelper.SaveState += this.NavigationHelper_SaveState;
            this.SMA = SmartChargeAPI.Instance;
            this.errorHandler = new ErrorHandler();
        }

        /// <summary>
        /// Gets the <see cref="NavigationHelper"/> associated with this <see cref="Page"/>.
        /// </summary>
        public NavigationHelper NavigationHelper
        {
            get { return this.navigationHelper; }
        }

        /// <summary>
        /// Gets the view model for this <see cref="Page"/>.
        /// This can be changed to a strongly typed view model.
        /// </summary>
        public ObservableDictionary DefaultViewModel
        {
            get { return this.defaultViewModel; }
        }

        /// <summary>
        /// Populates the page with content passed during navigation.  Any saved state is also
        /// provided when recreating a page from a prior session.
        /// </summary>
        /// <param name="sender">
        /// The source of the event; typically <see cref="NavigationHelper"/>
        /// </param>
        /// <param name="e">Event data that provides both the navigation parameter passed to
        /// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested and
        /// a dictionary of state preserved by this page during an earlier
        /// session.  The state will be null the first time a page is visited.</param>
        private async void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)
        {

            List<SiteType> types = await this.SMA.getSiteTypesList();
            this.SiteTypeList.ItemsSource = types;
        }

        /// <summary>
        /// Preserves state associated with this page in case the application is suspended or the
        /// page is discarded from the navigation cache.  Values must conform to the serialization
        /// requirements of <see cref="SuspensionManager.SessionState"/>.
        /// </summary>
        /// <param name="sender">The source of the event; typically <see cref="NavigationHelper"/></param>
        /// <param name="e">Event data that provides an empty dictionary to be populated with
        /// serializable state.</param>
        private void NavigationHelper_SaveState(object sender, SaveStateEventArgs e)
        {
        }

        #region NavigationHelper registration

        /// <summary>
        /// The methods provided in this section are simply used to allow
        /// NavigationHelper to respond to the page's navigation methods.
        /// <para>
        /// Page specific logic should be placed in event handlers for the  
        /// <see cref="NavigationHelper.LoadState"/>
        /// and <see cref="NavigationHelper.SaveState"/>.
        /// The navigation parameter is available in the LoadState method 
        /// in addition to page state preserved during an earlier session.
        /// </para>
        /// </summary>
        /// <param name="e">Provides data for navigation methods and event
        /// handlers that cannot cancel the navigation request.</param>
        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            this.navigationHelper.OnNavigatedTo(e);
        }

        protected override void OnNavigatedFrom(NavigationEventArgs e)
        {
            this.navigationHelper.OnNavigatedFrom(e);
        }

        #endregion


        private async void SubmitButton_Tapped(object sender, TappedRoutedEventArgs e)
        {
            try
            {
                bool isValid = ValidateFields();
                if (isValid)
                {   //register user
                    User newUser = new User()
                    {
                        Name = this.UsernameInput.Text,
                        Surname = this.SurnameInput.Text,
                        Email = this.EmailInput.Text,
                        CellphoneNumber = this.PhoneNumberInput.Text,
                        UserType = this.UserTypeToggleSwitch.IsOn ? USER_TYPE.Owner : USER_TYPE.Standard
                    };
                    this.showLoading();
                    bool registrationResult = await this.SMA.RegisterUser(newUser, this.AvatarPicker.storageFile, this.UsernameInput.Text, this.PasswordInput.Password);

                    if (registrationResult && this.UserTypeToggleSwitch.IsOn)
                    {//register site


                        Site newSite = new Site()
                        {
                            Name = this.SiteNameInput.Text,
                            Description = this.SiteDescriptionInput.Text,
                            Type = this.selectedSiteType,
                            Position = this.SitePositionSelector.siteLocation.Point,
                            Address = this.SitePositionSelector.addressString,
                            PhoneNumber = this.PhoneNumberInput.Text,
                            Email = this.EmailInput.Text,
                            WebSite = this.SiteWebsiteTextBox.Text,
                            Chargers = System.Text.RegularExpressions.Regex.IsMatch(this.NumberOfChargersTextBox.Text, "[0-9]+") ? int.Parse(this.NumberOfChargersTextBox.Text) : 0

                        };

                        bool siteAdditionResult = await this.SMA.AddSite(newSite, this.SiteImagePicker.pickedImages.ToList());
                        if (siteAdditionResult)
                        {
                            this.goToUserPage();
                        }

                    }
                    else if (registrationResult)
                    {
                        this.goToUserPage();
                    }

                    this.hideLoading();
                }
            }
            catch (Exception ex){
                Debug.WriteLine(ex.Message);
                this.hideLoading();
                string s = ex.Message;
            }
            
            
            
            
            
        }

        private bool ValidateFields()
        {
            SolidColorBrush red = new SolidColorBrush(Color.FromArgb(255, 255, 0, 0));
            SolidColorBrush white = new SolidColorBrush(Color.FromArgb(255, 255, 255, 255));

            this.UsernameInput.BorderBrush = this.UsernameInput.Text == "" ? red : white;
            this.EmailInput.BorderBrush = this.EmailInput.Text == "" || !this.IsValidEmailAddress(this.EmailInput.Text) ? red : white;
            this.PasswordInput.BorderBrush = this.PasswordInput.Password == "" ? red : white;


            bool userOk = !this.UsernameInput.BorderBrush.Equals(red) && !this.PasswordInput.BorderBrush.Equals(red) && !this.EmailInput.BorderBrush.Equals(red);
            bool ownerOK = false;
            if (this.UserTypeToggleSwitch.IsOn)
            {
                this.SiteNameInput.BorderBrush = this.SiteNameInput.Text == "" ? red : white;
                this.SiteTypeButton.BorderBrush = selectedSiteType == null ? red : white;
                this.SitePositionSelectorBorder.BorderBrush = this.SitePositionSelector.townLocation == null ? red : white;
                this.NumberOfChargersTextBox.BorderBrush = !this.NumberOfChargersTextBox.Text.Equals("") && System.Text.RegularExpressions.Regex.IsMatch(this.NumberOfChargersTextBox.Text, "[^0-9]") ? red : white;
                ownerOK = !this.SiteNameInput.BorderBrush.Equals(red) && !this.SiteTypeButton.BorderBrush.Equals(red) && !this.SitePositionSelectorBorder.BorderBrush.Equals(red) && !this.NumberOfChargersTextBox.BorderBrush.Equals(red);
            }


            return userOk && (!this.UserTypeToggleSwitch.IsOn || ownerOK);
        }

        private void UserTypeToggleSwitch_Toggled(object sender, RoutedEventArgs e)
        {
           
        }

        private void ListBoxItem_Tapped(object sender, TappedRoutedEventArgs e)
        {
            this.SiteTypeButton.Flyout.Hide();
            SiteType selected = ((Control)sender).DataContext as SiteType;
            this.SiteTypeButton.Content = "Tipologia locale : " + selected.Label;
            this.selectedSiteType = selected;
        }

        private void showLoading()
        {
            this.Loader.Visibility = Visibility.Visible;
        }

        private void hideLoading()
        {
            this.Loader.Visibility = Visibility.Collapsed;
        }

        private void goToUserPage()
        {
            var aw = Dispatcher.RunAsync(CoreDispatcherPriority.Normal,
                          () =>
                          {
                              this.Frame.Navigate(typeof(StandardUserLoggedInPage));
                              if (this.Frame.CanGoBack)
                              {
                                  this.Frame.BackStack.Clear();
                              }
                          });

        }

        private bool IsValidEmailAddress(string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            else
            {
                var regex = new Regex(@"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*");
                return regex.IsMatch(s) && !s.EndsWith(".");
            }
        }

       
    }
}