using System;

using System.Collections.Generic;

using System.Linq;

using System.Windows.Input;

using Microsoft.Maui.Controls;

using Xamarin.Forms.Clinical6.Core.Models;
 
namespace Xamarin.Forms.Clinical6.UI.Controls

{

    public class SwipeableListView : View

    {

        public static readonly BindableProperty ItemsProperty =

            BindableProperty.Create(

                nameof(Items),

                typeof(IEnumerable<Swipeable>),

                typeof(SwipeableListView),

                new List<Swipeable>(),

                propertyChanged: OnItemsChanged,

                defaultBindingMode: BindingMode.TwoWay);
 
        public IEnumerable<Swipeable> Items

        {

            get => (IEnumerable<Swipeable>)GetValue(ItemsProperty);

            set => SetValue(ItemsProperty, value);

        }
 
        // ✅ FIXED: Instance event (NOT static)

        public event EventHandler<IEnumerable<Swipeable>> ItemsChangedEvent;
 
        private static void OnItemsChanged(BindableObject bindable, object oldValue, object newValue)

        {

            var swipeableListView = bindable as SwipeableListView;
 
            swipeableListView?.ItemsChangedEvent?.Invoke(

                swipeableListView,

                (IEnumerable<Swipeable>)newValue);
 
            UpdateEmptyView(swipeableListView);

        }
 
        public static readonly BindableProperty LeftButtonEnabledProperty =

            BindableProperty.Create(nameof(LeftButtonEnabled), typeof(bool), typeof(SwipeableListView), true);
 
        public bool LeftButtonEnabled

        {

            get => (bool)GetValue(LeftButtonEnabledProperty);

            set => SetValue(LeftButtonEnabledProperty, value);

        }
 
        public static readonly BindableProperty LeftButtonColorProperty =

            BindableProperty.Create(nameof(LeftButtonColor), typeof(string), typeof(SwipeableListView), "#007ac9");
 
        public string LeftButtonColor

        {

            get => (string)GetValue(LeftButtonColorProperty);

            set => SetValue(LeftButtonColorProperty, value);

        }
 
        public static readonly BindableProperty RightButtonColorProperty =

            BindableProperty.Create(nameof(RightButtonColor), typeof(string), typeof(SwipeableListView), "#004aa9");
 
        public string RightButtonColor

        {

            get => (string)GetValue(RightButtonColorProperty);

            set => SetValue(RightButtonColorProperty, value);

        }
 
        public static readonly BindableProperty RightButtonEnabledProperty =

            BindableProperty.Create(nameof(RightButtonEnabled), typeof(bool), typeof(SwipeableListView), true);
 
        public bool RightButtonEnabled

        {

            get => (bool)GetValue(RightButtonEnabledProperty);

            set => SetValue(RightButtonEnabledProperty, value);

        }
 
        public static readonly BindableProperty SelectedItemCommandProperty =

            BindableProperty.Create(nameof(SelectedItemCommand), typeof(ICommand), typeof(SwipeableListView), null);
 
        public ICommand SelectedItemCommand

        {

            get => (ICommand)GetValue(SelectedItemCommandProperty);

            set => SetValue(SelectedItemCommandProperty, value);

        }
 
        public static readonly BindableProperty LeftButtonCommandProperty =

            BindableProperty.Create(nameof(LeftButtonCommand), typeof(ICommand), typeof(SwipeableListView), null);
 
        public ICommand LeftButtonCommand

        {

            get => (ICommand)GetValue(LeftButtonCommandProperty);

            set => SetValue(LeftButtonCommandProperty, value);

        }
 
        public static readonly BindableProperty RightButtonCommandProperty =

            BindableProperty.Create(nameof(RightButtonCommand), typeof(ICommand), typeof(SwipeableListView), null);
 
        public ICommand RightButtonCommand

        {

            get => (ICommand)GetValue(RightButtonCommandProperty);

            set => SetValue(RightButtonCommandProperty, value);

        }
 
        public static readonly BindableProperty EmptyViewProperty =

            BindableProperty.Create(nameof(EmptyView), typeof(View), typeof(SwipeableListView), null, propertyChanged: OnEmptyViewChanged);
 
        public View EmptyView

        {

            get => (View)GetValue(EmptyViewProperty);

            set => SetValue(EmptyViewProperty, value); // ✅ FIXED (you had wrong property here)

        }
 
        private static void OnEmptyViewChanged(BindableObject bindable, object oldValue, object newValue)

        {

            UpdateEmptyView((SwipeableListView)bindable);

        }
 
        private static void UpdateEmptyView(SwipeableListView swipeableListView)

        {

            if (swipeableListView?.EmptyView == null)

                return;
 
            swipeableListView.EmptyView.IsVisible =

                swipeableListView.Items == null ||

                !swipeableListView.Items.Any();

        }

    }

}