using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Windows.Input;
using InABox.Mobile;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
using XF.Material.Forms.UI;
using XF.Material.Forms.UI.Dialogs;

namespace PRS.Mobile
{

    public class NewFormSelectedArgs : EventArgs
    {
        public DigitalFormShell Form { get; private set; }

        public NewFormSelectedArgs(DigitalFormShell form)
        {
            Form = form;
        }
    }
    
    public delegate void NewFormSelectedEvent(object sender, NewFormSelectedArgs args);
    
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class NewForms
    {

        private String _appliesTo = "";
        public String AppliesTo
        {
            get => _appliesTo;
            set
            {
                _appliesTo = value;
                RefreshData(false, true);
            }
        }

        public event NewFormSelectedEvent ItemSelected;

        private String _currentfilter = "";
        
        public NewForms()
        {
            InitializeComponent();
        }
        
        public void RefreshData(bool force, bool async)
        {
            if (async)
                App.Data.DigitalForms.Refresh(force, Refresh);
            else
            {
                App.Data.DigitalForms.Refresh(true);
                Refresh();
            }
        }
        
        private void Refresh()
        {
            App.Data.DigitalForms.Search((shell) => String.Equals(shell.AppliesTo, AppliesTo) && FilterShell(shell) );
            Dispatcher.BeginInvokeOnMainThread(
                () =>
                {
                    _digitalforms.ItemsSource = App.Data.DigitalForms.Items;
                }
            );
        }
        
        private bool FilterShell(DigitalFormShell shell)
        {
            if (String.IsNullOrWhiteSpace(_currentfilter))
                return true;
            return shell.Code.ToUpper().Contains(_currentfilter.ToUpper())
                   || shell.Description.ToUpper().Contains(_currentfilter.ToUpper());
        }

        private void _search_OnTextChanged(object sender, MobileSearchBarTextChangedArgs args)
        {
            _currentfilter = args.Text;
            Refresh();
        }

        private void _digitalforms_OnRefresh(object sender, MobileListRefreshEventArgs args)
        {
            RefreshData(true,false);
        }
        
        private void Form_Clicked(object sender, EventArgs e)
        {
            var shell = (sender as MobileCard)?.BindingContext as DigitalFormShell;
            ItemSelected?.Invoke(this, new NewFormSelectedArgs(shell));
            Navigation.PopAsync();
        }
    }
}