using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Drawing;

namespace OCR_tester
{
    public class Zone
    {
        protected Bitmap FullImage;
        private List<Zone> _zones;
        private List<Window> _windows;

        protected Rectangle _bounds;
        public List<Zone> Zones { get => _zones; protected set => _zones = value; }
        public List<Window> Windows { get => _windows; protected set => _windows = value; }
        public Rectangle Bounds { get => _bounds; private set => _bounds = value; }

        public Bitmap ZoneImage
        {
            get
            {
                Bitmap sample = new Bitmap(Bounds.Width, Bounds.Height);
                Graphics g = Graphics.FromImage(sample);
                g.DrawImage(FullImage, new Rectangle(0, 0, sample.Width, sample.Height), Bounds, GraphicsUnit.Pixel);
                return sample;
            }
        }

        public Zone(Image fullImage, Rectangle bounds)
        {
            FullImage = (Bitmap)fullImage;
            Init(bounds);
        }
        public Zone(Bitmap fullImage, Rectangle bounds)
        {
            FullImage = fullImage;
            Init(bounds);
        }
        private void Init(Rectangle bounds)
        {
            Bounds = bounds;
            Zones = new List<Zone>();
            Windows = new List<Window>();
        }
        public void AddZone(Rectangle bounds)
        {
            if (Fits(bounds))
                Zones.Add(new Zone(ZoneImage, bounds));
        }
        public void AddWindow(Rectangle bounds)
        {
            if (Fits(bounds))
                Windows.Add(new Window(ZoneImage, bounds));
        }
        /// <summary>
        /// Checks if the given Rectangle fits in the current zone
        /// </summary>
        /// <param name="InputRectangle">The Rectangle you want to check the fittment</param>
        /// <returns></returns>
        protected bool Fits(Rectangle inputRectangle)
        {
            if (inputRectangle.X + inputRectangle.Width > Bounds.Width || inputRectangle.Y + inputRectangle.Height > Bounds.Height || inputRectangle.X < 0 || inputRectangle.Y < 0)
            {
                return false;
            }
            else
            {
                return true;
            }
        }
        public virtual Bitmap Draw()
        {
            Image img = ZoneImage;
            Graphics g = Graphics.FromImage(img);
            foreach (Window w in Windows)
            {
                g.DrawRectangle(Pens.Blue, w.Bounds);
            }
            return (Bitmap)img;
        }
    }
}