using InABox.Core;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;

namespace InABox.DynamicGrid
{
    public class DFLabelControl : DynamicFormControl<DFLayoutLabel>
    {
        protected override FrameworkElement Create()
        {
            var border = new Border
            {
                HorizontalAlignment = HorizontalAlignment.Stretch,
                VerticalAlignment = VerticalAlignment.Stretch
            };

            var style = Control.Style;

            var textBlock = new TextBlock
            {
                Text = Control.Caption,
                TextWrapping = TextWrapping.WrapWithOverflow,
                FontWeight = style.IsBold ? FontWeights.Bold : FontWeights.Normal,
                FontStyle = style.IsItalic ? FontStyles.Italic : FontStyles.Normal,
                VerticalAlignment = Control.Style.VerticalTextAlignment switch
                {
                    DFLayoutAlignment.Start => VerticalAlignment.Top,
                    DFLayoutAlignment.End => VerticalAlignment.Bottom,
                    DFLayoutAlignment.Stretch => VerticalAlignment.Stretch,
                    _ => VerticalAlignment.Center
                },
                HorizontalAlignment = HorizontalAlignment.Stretch,
                TextAlignment = Control.Style.HorizontalTextAlignment switch
                {
                    DFLayoutAlignment.Middle => TextAlignment.Center,
                    DFLayoutAlignment.End => TextAlignment.Right,
                    DFLayoutAlignment.Stretch => TextAlignment.Justify,
                    _ => TextAlignment.Left
                },
                Margin = new Thickness(5)
            };

            if(style.FontSize > 0)
            {
                textBlock.FontSize = style.FontSize;
            }
            if (style.BackgroundColour != System.Drawing.Color.Empty)
            {
                border.Background = new SolidColorBrush(ConvertColour(style.BackgroundColour));
            }
            if (style.ForegroundColour != System.Drawing.Color.Empty)
            {
                textBlock.Foreground = new SolidColorBrush(ConvertColour(style.ForegroundColour));
            }

            if (style.Underline == UnderlineType.Single)
            {
                textBlock.TextDecorations.Add(TextDecorations.Underline);
            }
            else if(style.Underline == UnderlineType.Double)
            {
                var underline1 = new TextDecoration
                {
                    Pen = new Pen
                    {
                        Brush = textBlock.Foreground,
                    }
                };
                var underline2 = new TextDecoration
                {
                    Pen = new Pen
                    {
                        Brush = textBlock.Foreground,
                    },
                    PenOffset = 2
                };
                textBlock.TextDecorations.Add(underline1);
                textBlock.TextDecorations.Add(underline2);
            }

            border.Child = textBlock;

            return border;
        }

        private static Color ConvertColour(System.Drawing.Color colour)
        {
            return new Color { R = colour.R, G = colour.G, B = colour.B, A = colour.A };
        }
    }
}