using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using InABox.Core;
using Image = System.Windows.Controls.Image;
using Label = System.Windows.Controls.Label;

namespace InABox.DynamicGrid
{
    public abstract class DynamicActionColumn : DynamicColumnBase
    {
        public DynamicActionColumnPosition Position { get; set; }

        public delegate bool ActionDelegate(CoreRow? row);
        public delegate FrameworkElement? ActionColumnToolTip(DynamicActionColumn column, CoreRow? row);

        public ActionDelegate? Action { get; set; }

        public ActionColumnToolTip? ToolTip { get; set; }
        
        public string[]? SelectedFilters { get; set; }
        public string[]? Filters { get; set; }
        public Func<CoreRow, string[], bool>? FilterRecord { get; set; }

        public Func<CoreRow[]?, ContextMenu?>? ContextMenu { get; set; }

        public object? Tag { get; set; }

        public string HeaderText { get; set; }
        public bool VerticalHeader { get; set; }

        public int Width { get; set; }
        
        protected override void Init()
        {
            base.Init();
            Width = 0;
            HeaderText = " ";
            Filters = null;
            FilterRecord = null;
            Position = DynamicActionColumnPosition.End;
        }

        public FrameworkElement? TextToolTip(string? text)
        {
            if (string.IsNullOrWhiteSpace(text))
                return null;

            var border = new Border
            {
                BorderBrush = new SolidColorBrush(Colors.Gray),
                BorderThickness = new Thickness(0.75),
                CornerRadius = new CornerRadius(5),
                Background = new SolidColorBrush(Colors.LightYellow),
                Padding = new Thickness(5),
                Child = new Label { Content = text }
            };
            return border;
        }

        public FrameworkElement? ImageToolTip(BitmapImage? image)
        {
            if (image == null)
                return null;

            var result = new Border
            {
                Background = new SolidColorBrush(Colors.LightYellow),
                BorderBrush = new SolidColorBrush(Colors.Gray),
                BorderThickness = new Thickness(0.75)
            };
            result.Child = new Image { Source = image };
            return result;
        }

        public abstract object? Data(CoreRow? row);

    }

    public class DynamicTextColumn : DynamicActionColumn
    {
        public delegate string GetTextDelegate(CoreRow? row);

        public GetTextDelegate Text { get; private set; }
        
        public Alignment Alignment { get; set; }
        
        public DynamicTextColumn(GetTextDelegate text, ActionDelegate? action = null)
        {
            Alignment = Alignment.MiddleCenter;
            Text = text;
            Action = action;
            VerticalHeader = false;
        }

        public override object? Data(CoreRow? row) => Text?.Invoke(row);
    }
    
    public class DynamicImageColumn : DynamicActionColumn
    {
        public delegate BitmapImage? GetImageDelegate(CoreRow? row);

        public DynamicImageColumn(GetImageDelegate image, ActionDelegate? action = null)
        {
            Image = image;
            Action = action;
            VerticalHeader = true;
        }

        public DynamicImageColumn(BitmapImage image, ActionDelegate? action = null)
        {
            Image = r => image;
            Action = action;
        }

        public GetImageDelegate Image { get; protected set; }

        
        public bool AllowHeaderClick { get; set; }

        protected override void Init()
        {
            base.Init();
            AllowHeaderClick = false;
        }
        
        public override object? Data(CoreRow? row) => Image?.Invoke(row);
    }
    
}