using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.IO;
using System.Threading;
using System.Diagnostics;
using Microsoft.Win32;

namespace SpriteViewerViktoriaKirschbaum
{
    public partial class MainWindow : Window
    {
        public List<Image> m_Images;

        private BitmapImage m_ImageAtlas;
        private CroppedBitmap m_CroppedBitmap;
        private System.Windows.Threading.DispatcherTimer dispatcherTimer = new System.Windows.Threading.DispatcherTimer();
        private Stopwatch sw = new Stopwatch();

        private string m_ImagePath;

        private int m_Speed = 500;
        private int m_AmountColumn = 4;
        private int m_AmountRow = 2;
        private int m_Height = 1024;
        private int m_Width = 1024;

        private int m_newHeight;
        private int m_newWidth;
        private int m_WidthFromTile;
        private int m_HeightFromTile;
        private int i = 0;                  //row
        private int j = 0;                  //column
        private int m_Counter;

        private bool m_DoAnimation = false;

        public MainWindow()
        {
            InitializeComponent();

            UpdateTextBoxes();

            m_ImageAtlas = new BitmapImage(new Uri(Environment.CurrentDirectory + @"\Tiles\ExampleImageOne.png", UriKind.Absolute));
            Image_Preview.Source = m_ImageAtlas;
        }

        //TextBoxes
        #region
        private void UpdateTextBoxes()
        {
            if (m_Speed == 0)
            {
                Label_StatusBar.Content = "Enter a speed in ms.";
            }
            else if (m_AmountColumn == 0)
            {
                Label_StatusBar.Content = "You need to enter the amount of columns.";
            }
            else if (m_AmountRow == 0)
            {
                Label_StatusBar.Content = "You need to enter the amount of rows.";
            }
            else if (m_Height == 0)
            {
                Label_StatusBar.Content = "Please enter the height of the imported image.";
            }
            else if (m_Width == 0)
            {
                Label_StatusBar.Content = "Please enter the width of the imported image.";
            }
            else
            {
                Label_StatusBar.Content = "Sprite is ready.";
            }

            TextBox_Speed_Title.Content = "Animation Speed in ms:";
            TextBox_AmountColumn_Title.Content = "Amount Columns:";
            TextBox_AmountRow_Title.Content = "Amount Rows:";
            TextBox_Height_Title.Content = "Height:";
            TextBox_Width_Title.Content = "Width:";
        }

        private void TextBox_Speed_KeyDown(object sender, TextChangedEventArgs e)
        {
            try
            {
                m_Speed = Convert.ToInt32(TextBox_Speed.Text);
            }
            catch
            {
                MessageBox.Show("Enter a number.");
            }
        }

        private void TextBox_AmountColumn_KeyDown(object sender, TextChangedEventArgs e)
        {
            try
            {
                m_AmountColumn = Convert.ToInt32(TextBox_AmountColumn.Text);
            }
            catch
            {
                MessageBox.Show("Enter a number.");
            }
        }

        private void TextBox_AmountRow_KeyDown(object sender, TextChangedEventArgs e)
        {
            try
            {
                m_AmountRow = Convert.ToInt32(TextBox_AmountRow.Text);
            }
            catch
            {
                MessageBox.Show("Enter a number.");
            }
        }

        private void TextBox_Height_KeyDown(object sender, TextChangedEventArgs e)
        {
            try
            {
                m_Height = Convert.ToInt32(TextBox_Height.Text);
            }
            catch
            {
                MessageBox.Show("Enter a number.");
            }
        }

        private void TextBox_Width_KeyDown(object sender, TextChangedEventArgs e)
        {
            try
            {
                m_Width = Convert.ToInt32(TextBox_Width.Text);
            }
            catch
            {
                MessageBox.Show("Enter a number.");
            }
        }
        #endregion

        //Buttons
        #region
        private void Button_Click_Start(object sender, RoutedEventArgs e)
        {
            UpdateTextBoxes();

            if (m_Speed == 0 || m_Height == 0 || m_Width == 0)
            {
                MessageBox.Show("You need to enter a number for all of the configurations. See the status bar for more information.");
            }
            else if (m_Speed < 0 || m_AmountColumn < 0 || m_AmountRow < 0 || m_Height < 0 || m_Width < 0)
            {
                MessageBox.Show("You need to enter a positive number for all of the configurations.");
            }
            else
            {
                m_newHeight = m_Height / m_AmountColumn;            //301 = 1024 / 4
                m_newWidth = m_Width / m_AmountRow;

                m_DoAnimation = true;
                dispatcherTimer.Tick += new EventHandler(dispatcherTimer_Tick);
                dispatcherTimer.Interval = new TimeSpan(0, 0, 0, 0, m_Speed);
                dispatcherTimer.Start();
            }
        }

        private void Button_Click_ImportSprite(object sender, RoutedEventArgs e)
        {
            OpenFileDialog Dialog = new OpenFileDialog();
            Dialog.Filter = "PNG Files (*.png)|*.png|JPEG Files (*.jpg)|*.jpg|Bitmap Files (*.bmp)|*.bmp";
            Dialog.Multiselect = false;

            bool? ImageSelected = Dialog.ShowDialog();

            if (ImageSelected == true)
            {
                m_ImagePath = Dialog.FileName;

                MessageBox.Show("Importing image...");
                m_ImageAtlas = new BitmapImage(new Uri(m_ImagePath, UriKind.Absolute));

                Image_Preview.Source = m_ImageAtlas;
            }
        }
        #endregion

        private void dispatcherTimer_Tick(object sender, EventArgs e)
        {
            if (Image_Sprite == null)
            {
                return;
            }

            if (j > m_AmountColumn - 1)
            {
                i++;
                j = 0;
            }

            if(i > m_AmountRow - 1 && j > m_AmountColumn - 1)
            {
                i = 0;
                j = 0;
            }

            m_WidthFromTile = j * m_newWidth;
            m_HeightFromTile = i * m_newHeight;

            m_CroppedBitmap = new CroppedBitmap(m_ImageAtlas, new Int32Rect(m_WidthFromTile, m_HeightFromTile, m_newWidth, m_newHeight));
            Image_Sprite.Source = m_CroppedBitmap;

            i++;

            i = i;
            j = j;
        }
    }
}