using System;
using System.Threading.Tasks;
using TINK.Model.Device;
#if USEFLYOUT
using TINK.View.MasterDetail;
#endif
using TINK.ViewModel;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;

namespace TINK.View.Login
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
#if USEFLYOUT
    public partial class LoginPage : ContentPage, IViewService, IDetailPage
#else
    public partial class LoginPage : ContentPage, IViewService
#endif
    {
        public LoginPage ()
		{
			InitializeComponent ();

            var l_oModel = App.ModelRoot;
#if !BACKSTYLE
            var l_oViewModel = new LoginPageViewModel(
                l_oModel, 
                (url) => DependencyService.Get< IExternalBrowserService>().OpenUrl(url), 
                this);

            LoginPageView.BindingContext = l_oViewModel;
#else
            LoginPageView.BindingContext = new LoginPageViewModel(l_oModel.ActiveUser, this, Navigation);
#endif
        }

        /// <summary>
        /// Displays alert message.
        /// </summary>
        /// <param name="p_strTitle">Title of message.</param>
        /// <param name="p_strMessage">Message to display.</param>
        /// <param name="p_strCancel">Type of buttons.</param>
        public new async Task DisplayAlert(string p_strTitle, string p_strMessage, string p_strCancel)
            => await App.Current.MainPage.DisplayAlert(p_strTitle, p_strMessage, p_strCancel);

        /// <summary> Displays alert message.</summary>
        /// <param name="title">Title of message.</param>
        /// <param name="message">Message to display.</param>
        /// <param name="details">Detailed error description.</param>
        /// <param name="cancel">Type of buttons.</param>
        public async Task DisplayAdvancedAlert(
            string title,
            string message,
            string details,
            string cancel)
            => await App.Current.MainPage.DisplayAlert(title, $"{message}\r\nDetails:\r\n{details}", cancel);

        /// <summary> Displays detailed alert message.</summary>
        /// <param name="title">Title of message.</param>
        /// <param name="message">Message to display.</param>
        /// <param name="details">Detailed error description.</param>
        /// <param name="accept">Text of accept button.</param>
        /// <param name="cancel">Text of cancel button.</param>
        /// <returns>True if user pressed accept.</returns>
        public async Task<bool> DisplayAdvancedAlert(string title, string message, string details, string accept, string cancel)
            => await App.Current.MainPage.DisplayAlert(title, $"{message}\r\nDetails:\r\n{details}", accept, cancel);

#if USEFLYOUT
        /// <summary>
        /// Creates and a page an shows it.
        /// </summary>
        /// <param name="p_oTypeOfPage">Type of page to show.</param>
        public void ShowPage(ViewTypes p_oType, string p_strTitle = null)
            => m_oNavigation.ShowPage(p_oType.GetViewType(), p_strTitle);
#else
        /// <summary> Shows a page.</summary>
        /// <param name="route">Route of the page to show.</param>
        public async Task ShowPage(string route) => await Shell.Current.GoToAsync(route);
#endif


        /// <summary> Pushes a page onto the modal stack. </summary>
        /// <param name="p_oTypeOfPage">Page to display.</param>
        public async Task PushModalAsync(ViewTypes typeOfPage) 
            => await Navigation.PushModalAsync((Page)Activator.CreateInstance(typeOfPage.GetViewType()));


        /// <summary> Pops a page from the modal stack. </summary>
        public Task PopModalAsync()
        {
            throw new NotSupportedException();
        }

        /// <summary> Pushes a page onto the stack. </summary>
        /// <param name="p_oTypeOfPage">Page to display.</param>
        public async Task PushAsync(ViewTypes p_oTypeOfPage)
        {
            await Navigation.PushAsync((Page)Activator.CreateInstance(p_oTypeOfPage.GetViewType()));
        }

#if USEFLYOUT
        /// <summary>
        /// Delegate to perform navigation.
        /// </summary>
        private INavigationMasterDetail m_oNavigation;

        /// <summary>
        /// Delegate to perform navigation.
        /// </summary>
        public INavigationMasterDetail NavigationMasterDetail
        {
            set { m_oNavigation = value; }
        }

#endif
#if USCSHARP9
        public Task<IViewService.IUserFeedback> DisplayUserFeedbackPopup() => throw new NotSupportedException();
#else
        public Task<IUserFeedback> DisplayUserFeedbackPopup() => throw new NotSupportedException();
#endif
        }
    }