using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace AppLauncher.Windows.Forms
{
    public class TilePanelContainer : AUserControl
    {
        protected readonly int tileSize = 70;
        protected readonly int margin = 3;

        public TilePanelContainer() : base()
        {

        }

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

            OnResize(e);
        }

        public Point GridSize
        {
            get
            {
                int w = (int)Math.Floor(decimal.Divide(this.Width, this.TileSize));
                int h = (int)Math.Floor(decimal.Divide(this.Height, this.TileSize));

                return new Point(w, h);
            }
        }

        public int TileSize => (tileSize + margin);


        public async Task Collapse(int height, int increment = 6)
        {
            await Task.Run(() =>
            {
                while (this.Height > height)
                {
                    if (this.InvokeRequired)
                    {
                        this.Invoke(new MethodInvoker(() => {
                            this.Height -= increment;
                        }));
                    }
                    else
                    {
                        this.Height -= increment;
                    }

                    Thread.Sleep(10);
                }
            });
        }

        public async Task Expand(int height, int increment = 8)
        {
            await Task.Run(() =>
            {
                while (this.Height < height)
                {
                    if (this.InvokeRequired)
                    {
                        this.Invoke(new MethodInvoker(() => {
                            this.Height += increment;
                            this.Invalidate();
                        }));
                    }
                    else
                    {
                        this.Height += increment;
                        this.Invalidate();
                    }

                    Thread.Sleep(10);
                }
            });
        }

        public Point GetTileCoord(Point location) => this.GetTileCoord(location.X, location.Y);

        public Point GetTileCoord(int posX, int posY)
        {
            int x = (int)Math.Round(decimal.Divide(posX, this.TileSize));
            int y = (int)Math.Round(decimal.Divide(posY, this.TileSize));

            if (x < 0) x = 0;
            if (y < 0) y = 0;

            return new Point(x, y);
        }

        public Point GetTilePosition(Point location) => this.GetTilePosition(location.X, location.Y);

        public Point GetTilePosition(int posX, int posY)
        {
            int x = (int)Math.Round(decimal.Divide(posX, this.TileSize));
            int y = (int)Math.Round(decimal.Divide(posY, this.TileSize));

            if (x < 0) x = 0;
            if (y < 0) y = 0;

            return new Point((x * this.TileSize), (y * this.TileSize));
        }

        public void SetGridSize(int width, int height)
        {
            this.Size = new Size((this.TileSize * width), (this.TileSize * height));
        }
    }
}