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

namespace OCR_tester
{
    public partial class Form1 : Form
    {
        DirectoryInfo imagesFolder = new DirectoryInfo(@"C:\Users\Moi\Pictures\SeleniumScreens\DataSetHighRes");
        const string DEFAULT_IMAGE_NAME = "screen_";    //You will need to add a number and extension after it ex: screen_2.png
        const string ENGLISH_TESSDATA_FILENAME = "eng.traineddata";
        const string DEFAULT_CREATEZONE_BUTTON_TEXT = "Create Zone";
        const string DEFAULT_CREATEWINDOW_BUTTON_TEXT = "Create Window";

        Point[] zonePoints;
        Point[] windowPoints;

        bool selectingZonePoints = false;
        bool selectingWindowPoints = false;
        public Form1()
        {
            InitializeComponent();
            reload();
        }
        private void reload()
        {
            pbxInput.Image = Image.FromFile(Path.Combine(imagesFolder.FullName, DEFAULT_IMAGE_NAME + "30.png"));
        }
        private void SwitchCreateZoneButton()
        {
            if (!selectingWindowPoints)
            {
                if (selectingWindowPoints)
                    SwitchCreateWindowButton();
                selectingZonePoints = true;
                zonePoints = new Point[] { new Point(-1, -1), new Point(-1, -1) };
            }
            else
            {
                selectingZonePoints = false;
            }

            UpdateCreateZoneButton();
        }
        private void SwitchCreateWindowButton()
        {
            if (!selectingWindowPoints)
            {
                if (selectingZonePoints)
                    SwitchCreateZoneButton();
                selectingWindowPoints = true;
                windowPoints = new Point[] { new Point(-1, -1), new Point(-1, -1) };
            }
            else
            {
                selectingWindowPoints = false;
            }

            UpdateCreateWindowButton();
        }
        private void UpdateCreateWindowButton()
        {
            btnCreateWindow.Text = "Points remaining : " + ZonePointsRemaining();
        }
        private void UpdateCreateZoneButton()
        {
            btnCreateZone.Text = "Points remaining : " + ZonePointsRemaining();
        }
        private void btnCreateZone_Click(object sender, EventArgs e)
        {
            SwitchCreateZoneButton();
        }
        private void btnCreateWindow_Click(object sender, EventArgs e)
        {
            SwitchCreateWindowButton();
        }
        private int ZonePointsRemaining()
        {
            int remaining = 0;
            foreach (Point p in zonePoints)
            {
                if (p.X == -1 && p.Y == -1)
                    remaining++;
            }
            return remaining;
        }

        private void pbxInput_Click(object sender, EventArgs e)
        {
            Point coordinates = pbxInput.PointToClient(new Point(MousePosition.X, MousePosition.Y));

            float xOffset = (float)pbxInput.Image.Width / (float)pbxInput.Width;
            float yOffset = (float)pbxInput.Image.Height / (float)pbxInput.Height;
            if (selectingZonePoints)
            {
                int remaining = ZonePointsRemaining();
                int index = (zonePoints.Length) - remaining;
                zonePoints[index] = new Point(Convert.ToInt32((float)coordinates.X * xOffset), Convert.ToInt32((float)coordinates.Y * yOffset));
                remaining -= 1;

                if (remaining == 0)
                {
                    Image fullImage = pbxInput.Image;
                    Size newSize = new Size(zonePoints[1].X - zonePoints[0].X, zonePoints[1].Y - zonePoints[0].Y);
                    MainZone mainZone = new MainZone(fullImage, new Rectangle(zonePoints[0], newSize));
                    pbxInput.Image = mainZone.Draw();

                    SwitchCreateZoneButton();
                }
                else
                {
                    UpdateCreateZoneButton();
                }
            }
        }

        private void btnDeleteZone_Click(object sender, EventArgs e)
        {
            reload();
        }
    }
}