using InABox.Clients;
using InABox.Configuration;
using InABox.Core;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using Xamarin.Forms;
using Xamarin.Forms.Xaml;
using XF.Material.Forms.UI.Dialogs;

namespace comal.timesheets
{
    public delegate void PasswordResetEvent();

    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class PasswordResetPage : ContentPage
    {
        public event PasswordResetEvent OnPasswordReset;
        private User user;

        public PasswordResetPage(string userid)
        {
            InitializeComponent();
            Task.Run(() =>
            {
                ClientFactory.SetBypass();
                CoreTable table = new Client<User>().Query(new Filter<User>(x => x.UserID).IsEqualTo(userid));
                if (table.Rows.Any())
                {
                    user = table.Rows.FirstOrDefault().ToObject<User>();
                }
                else
                {
                    Device.BeginInvokeOnMainThread(() =>
                    {
                        DisplayAlert("Error", "User not found", "OK");
                    });
                }
            });
        }

        private async void SaveNewPassword_Clicked(object sender, EventArgs e)
        {
            bool bOK = CheckPasswordValidity();
            if (user.ID != Guid.Empty && bOK)
            {
                using (await MaterialDialog.Instance.LoadingDialogAsync(message: "Saving"))
                {
                    user.Password = newPasswordEnt1.Text;
                    new Client<User>().Save(user, "Password updated by User from Timebench");
                    ClientFactory.UnsetBypass();
                    App.Settings.Password = user.Password;
                    new LocalConfiguration<ConnectionSettings>().Save(App.Settings);
                }
                DisplayAlert("Success", "Password changed", "OK");
                Navigation.PopAsync();
                OnPasswordReset?.Invoke();
            }
        }

        private bool CheckPasswordValidity()
        {
            if (string.IsNullOrWhiteSpace(newPasswordEnt1.Text) || string.IsNullOrWhiteSpace(newPasswordEnt2.Text))
            {
                DisplayAlert("Error", "Password entries may not be blank", "OK");
                return false;
            }
            if (newPasswordEnt1.Text.Length < 5 || newPasswordEnt2.Text.Length < 5)
            {
                DisplayAlert("Error", "Passwords must be at least 5 characters", "OK");
                return false;
            }
            if (newPasswordEnt1.Text != newPasswordEnt2.Text)
            {
                DisplayAlert("Error", "Passwords do not match", "OK");
                return false;
            }
            return true;
        }

    }
}