namespace RyzStudio.Windows.ThemedForms
{
    using System;
    using System.ComponentModel;
    using System.Drawing;

    public partial class Button : RyzStudio.Windows.ThemedForms.UserControl
	{
        public class Style
        {
            public Color BackColour { get; set; } = Color.Transparent;
            public Color PenColour { get; set; } = Color.Transparent;
            public Image ForeImage { get; set; } = null;
        }

        public enum State
        {
            Idle = 0,
            Hover,
            Down
        }

        protected State controlState = State.Idle;

		public Button() : base()
        {
            InitializeComponent();

            label1.ImageAlign = ContentAlignment.MiddleCenter;

			label1.Click += delegate { this.OnClick(null); };
			label1.MouseEnter += delegate { this.VisualState = State.Hover; };
			label1.MouseLeave += delegate { this.VisualState = State.Idle; };
			label1.MouseDown += delegate { this.VisualState = State.Down; };
			label1.MouseUp += delegate { this.VisualState = State.Idle; };
		}

        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);

            // customise
            this.StyleOver = new Style()
            {
                BackColour = Color.FromArgb(51, 51, 51),
                PenColour = Color.White,
                ForeImage = this.OverImage
            };
            this.StyleDown = new Style()
            {
                BackColour = Color.FromArgb(179, 179, 179),
                PenColour = Color.Black,
                ForeImage = this.DownImage
            };
            this.StyleDefault = new Style()
            {
                BackColour = Color.White,
                PenColour = Color.Black,
                ForeImage = this.DefaultImage
            };

			this.VisualState = State.Idle;
        }

        protected State VisualState
		{
			get { return controlState; }
			set
			{
				switch (value)
				{
					case State.Idle:
						if (this.VisualState == State.Down)
						{
							updateButton(StyleOver);
						}
						else
						{
							updateButton(StyleDefault);
						}

						break;
					case State.Hover:
						updateButton(StyleOver);
						break;
					case State.Down:
						updateButton(StyleDown);
						break;
					default:
						updateButton(StyleDefault);
						break;
				}

				controlState = value;
			}
		}

		protected void updateButton(Style style)
		{
			label1.ForeColor = style.PenColour;
			label1.BackColor = style.BackColour;
			label1.Image = style.ForeImage;
        }

        [Browsable(true)]
		[Category("Appearance")]
		public string LabelText { get => label1.Text; set => label1.Text = value; }

		[Browsable(true)]
		[Category("Appearance")]
		public Image OverImage { get; set; } = null;

		[Browsable(true)]
		[Category("Appearance")]
		public Image DownImage { get; set; } = null;

		[Browsable(true)]
		[Category("Appearance")]
		public Image DefaultImage { get; set; } = null;

        [Browsable(false)]
        public Style StyleOver { get; set; } = new Style();

        [Browsable(false)]
		public Style StyleDown { get; set; } = new Style();

        [Browsable(false)]
        public Style StyleDefault { get; set; } = new Style();

        public void PerformClick() => this.OnClick(null);
	}
}