using System.Drawing;

namespace System.Windows.Forms
{
    public class Label : Control
    {
        private System.Windows.Controls.TextBlock textBlock;
        protected new System.Windows.Controls.Label control { get; }

        public override bool AutoSize 
        { 
            get => base.AutoSize;
            set
            {
                if (base.AutoSize != value) 
                {
                    base.AutoSize = value;
                    // when AutoSize is false, update the control size (case: FR LabelControl wrong scale when AutoSize is set to False after setting Width and Height)
                    if (!value)
                    {
                        SetControlWidth(Width);
                        SetControlHeight(Height);
                    }
                }
                textBlock.TextWrapping = value ? TextWrapping.NoWrap : TextWrapping.Wrap;
            }
        }

        public override string Text 
        { 
            get => textBlock.Text;
            set
            {
                bool needFixLeft = AutoSize && control.FlowDirection == FlowDirection.RightToLeft;
                var width = needFixLeft ? Width : 0;
                
                textBlock.Text = value?.Replace("\t", "");
                base.Text = textBlock.Text;

                if (needFixLeft)
                {
                    // reset WPF measure cache
                    control.Measure(new Size(10000, 10000));
                    Left += width - Width;
                }
            }
        }

        private ContentAlignment textAlign;
        public ContentAlignment TextAlign
        {
            get => textAlign;
            set
            {
                textAlign = value;
                Helper.GetContentAlignment(value, out System.Windows.HorizontalAlignment h, out System.Windows.VerticalAlignment v);
                control.HorizontalContentAlignment = h;
                control.VerticalContentAlignment = v;
            }
        }

        public FlatStyle FlatStyle { get; set; }

        public bool UseCompatibleTextRendering { get; set; }

        public Label()
        {
            control = new();
            SetControl(control);
            textBlock = new();
            control.Content = textBlock;
            
            // match winforms appearance
            Padding = new Padding(2, 0, 0, 0);
            textBlock.Margin = new Thickness(0);
            AutoSize = false;
        }
    }
}