using System;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Drawing.Imaging;

namespace EXIF
{
    public partial class Form1 : Form
    {
        private string[] drv;
        private DirectoryInfo[] NoSpyARRAY;
        private FileInfo[] NoFILESpyARRAY;

        public Form1()
        {
            InitializeComponent();
            pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;

            drv = Environment.GetLogicalDrives();
            TreeNode ShinyNode;

            for (int i = 0; i < drv.Length; i++)
            {
                ShinyNode = treeView1.Nodes.Add(drv[i]);

                ShowSubDick(ShinyNode);
            }
        }

        private void ShowSubDick(TreeNode shinyNode)
        {
            DirectoryInfo NoSpy = new DirectoryInfo(shinyNode.FullPath);

            try
            {
                NoSpyARRAY = NoSpy.GetDirectories();
                NoFILESpyARRAY = NoSpy.GetFiles();
            }
            catch { return;  }

            foreach (DirectoryInfo NewestDIRECTORYStuff in NoSpyARRAY)
            {
                shinyNode.Nodes.Add(NewestDIRECTORYStuff.Name);
            }

            foreach (FileInfo NewestFILEStuff in NoFILESpyARRAY)
            {
                if (NewestFILEStuff.Name.Contains(".png") || NewestFILEStuff.Name.Contains(".jpeg") || NewestFILEStuff.Name.Contains(".jpg") || NewestFILEStuff.Name.Contains(".img") || NewestFILEStuff.Name.Contains(".gif"))
                {
                    shinyNode.Nodes.Add(NewestFILEStuff.Name);
                }
            }
        }

        private void treeView1_BeforeExpand(object sender, TreeViewCancelEventArgs e)
        {
            foreach(TreeNode NewShinyNode in e.Node.Nodes)
            {
                ShowSubDick(NewShinyNode);
            }
        }

        private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            if(e.Node.Nodes.Count == 0)
            {
                ShowSubDick(e.Node);
            }
        }

        private void treeView1_NodeMouseDoubleClick(object sender, TreeNodeMouseClickEventArgs e)
        {
            DirectoryInfo ImageSpy = new DirectoryInfo(e.Node.FullPath);

            if (ImageSpy.ToString().Contains(".png") || ImageSpy.ToString().Contains(".jpeg") || ImageSpy.ToString().Contains(".jpg") || ImageSpy.ToString().Contains(".img") || ImageSpy.ToString().Contains(".gif"))
            {
                textBox1.Clear();

                pictureBox1.Image = Image.FromFile(ImageSpy.ToString());
                PropertyItem[] exifDATA = pictureBox1.Image.PropertyItems;
                ASCIIEncoding encoding = new ASCIIEncoding();
                string reader;


                foreach (PropertyItem exifARRAY in exifDATA)
                {
                    reader = encoding.GetString(exifARRAY.Value);

                    if (exifARRAY.Id.ToString().Contains("271")) // Hexa: 0x010F
                    {
                        textBox1.Text += "Gerätehersteller: " + reader;
                        textBox1.Text  += Environment.NewLine;
                    }
                    else if (exifARRAY.Id.ToString().Contains("272")) // Hexa: 0x0110
                    {
                        textBox1.Text += "Gerätemodell: " + reader;
                        textBox1.Text += Environment.NewLine;
                    }
                    else if (exifARRAY.Id.ToString().Contains("800")) // Hexa: 0x0320
                    {
                        textBox1.Text += "Bildtitel: " + reader;
                        textBox1.Text += Environment.NewLine;
                    }
                    else if (exifARRAY.Id.ToString().Contains("36867")) // Hexa: 0x9003
                    {
                        textBox1.Text += "Aufnahmezeitpunkt: " + reader;
                        textBox1.Text += Environment.NewLine;
                    }
                    else if (exifARRAY.Id.ToString().Contains("33437")) // Hexa: 0x829D
                    {
                        textBox1.Text += "Blende: " + exifARRAY.Value[0]; 
                        textBox1.Text += Environment.NewLine;
                    }
                    else if (exifARRAY.Id.ToString().Contains("34855")) // Hexa: 0x8827
                    {
                        textBox1.Text += "ISO-Empfindlichkeit: " + exifARRAY.Value[0]; 
                        textBox1.Text += Environment.NewLine;
                    }
                    else if (exifARRAY.Id.ToString().Contains("41989")) // Hexa: 0xA405
                    {
                        textBox1.Text += "Brennweite (Bezogen auf 35mm): " + exifARRAY.Value[0]; 
                        textBox1.Text += Environment.NewLine;
                    }
                }
            }
        }
    }
}