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

// The 'text' parameter will contain the text from the:
//   - Current Clipboard when run by HotKey
//   - History Item when run from the History Menu
// The returned string will be:
//   - Placed directly on the Clipboard
//   - Ignored by ClipboardFusion if it is 'null'
public static class ClipboardFusionHelper
{
	public static string ProcessText(string text)
	{
        using(FormExport form = new FormExport())
            Application.Run(form);
	
		return null;
	}
	
	private enum ClipboardItemParserStateEnum
	{
        Text = 0,
        Image = 1,
        Files = 2,
	}
	
	private class ClipboardItem
	{
        public string Text {get;set;}
        public Bitmap Image {get;set;}
        public string[] Files {get;set;}
        
        public ClipboardItem()
        {
            this.Text = "";
            this.Image = null;
            this.Files = new string[0];
        }
        
        public ClipboardItem(string text)
        {
            this.Text = text;
            this.Image = null;
            this.Files = new string[0];
        }
        
        public ClipboardItem(string text, Bitmap image, string[] files)
        {
            this.Text = text;
            this.Image = image;
            this.Files = files;
        }
        
        public ListViewItem ToListViewItem()
        {
            ListViewItem item = new ListViewItem(this.Text);
            item.SubItems.Add( (this.Image == null) ? "No" : "Yes" );
            item.SubItems.Add( string.Join(", ", this.Files) );
            item.Tag = this;
            return item;
        }
	}
	
	private class FormExport : Form
	{
        private ComboBox cboLists;
		private ListView lvItems;
		private ColumnHeader colText;
		private ColumnHeader colImage;
		private ColumnHeader colFiles;
		private Button btnExport;
		
		public FormExport()
		{
            this.cboLists = new ComboBox();
			this.lvItems = new ListView();
			this.btnExport = new Button();
			this.colText = new ColumnHeader();
			this.colImage = new ColumnHeader();
			this.colFiles = new ColumnHeader();
		
            this.SuspendLayout();
            
            this.colText.Text = "Text";
            this.colText.Width =  140;
            this.colImage.Text = "Has Image";
            this.colFiles.Text = "Files";
            
            this.cboLists.DropDownStyle = ComboBoxStyle.DropDownList;
            this.cboLists.Location = new Point(16, 16);
            this.cboLists.Size = new Size(296, 21);
            this.cboLists.Items.AddRange(new string[]{"History", "Local Pinned", "Recent Online", "Pinned Online"});                        
            this.cboLists.SelectedIndex = 0;
            this.cboLists.SelectedIndexChanged += this.cboLists_SelectedIndexChanged;
            
            this.lvItems.Columns.AddRange(new ColumnHeader[] { this.colText, this.colImage, this.colFiles });
            this.lvItems.HeaderStyle = ColumnHeaderStyle.Nonclickable;
            this.lvItems.Location = new Point(16, 48);
            this.lvItems.Size = new Size(296, 336);
            this.lvItems.View = View.Details;            
            this.lvItems.FullRowSelect = true;
            
            this.btnExport.Click += this.btnExport_Click;
            this.btnExport.Text = "Export Selected Items to a File";
            this.btnExport.Location = new Point(16, 392);
            this.btnExport.Size = new Size(296, 32);
            
            this.ClientSize = new System.Drawing.Size(329, 439);
            this.Controls.Add(this.btnExport);
            this.Controls.Add(this.lvItems);
            this.Controls.Add(this.cboLists);
            this.Text = "ClipboardFusion Item Exporter";
           
            this.ResumeLayout(false);
            
            this.cboLists_SelectedIndexChanged(null, null);
		}
		
		private void btnExport_Click(object sender, EventArgs e)
		{
            string filename;
            using(SaveFileDialog dialog = new SaveFileDialog())
            {
                dialog.Filter = "ClipboardFusion Item List|*.cfitems";
                if(dialog.ShowDialog() != DialogResult.OK)
                    return;
                    
                filename = dialog.FileName;
            }
            
            using(FileStream file = File.OpenWrite(filename))
            using(StreamWriter writer = new StreamWriter(file))
            {
                foreach(ListViewItem lvItem in this.lvItems.SelectedItems)
                {
                    ClipboardItem item = lvItem.Tag as ClipboardItem;
                    if(item == null)
                        continue;
                        
                 
                    writer.WriteLine( Convert.ToBase64String(Encoding.Unicode.GetBytes( item.Text )));
                    if(item.Image == null)
                    {
                        writer.WriteLine();
                    }
                    else
                    {
                        using(MemoryStream stream = new MemoryStream())
                        {
                            item.Image.Save(stream, ImageFormat.Png);
                            writer.WriteLine( Convert.ToBase64String(stream.ToArray()));
                        }
                    }
                    
                    writer.WriteLine( Convert.ToBase64String(Encoding.Unicode.GetBytes( string.Join("|", item.Files) )));
                }
            }
            
            BFS.Dialog.ShowMessageInfo("The selected item have been exported from the " + this.cboLists.SelectedItem + " Items list.");
            this.Close();
		}
		
		private void cboLists_SelectedIndexChanged(object sender, EventArgs e)
		{
            this.lvItems.Items.Clear();
            string value = this.cboLists.SelectedItem as string;
            switch(value)
            {
                case "History":
                    for(int i = 0; i < BFS.ClipboardFusion.GetHistoryItemCount(); i++)
                    {
                        ClipboardItem item = new ClipboardItem(BFS.ClipboardFusion.GetHistoryText(i), BFS.ClipboardFusion.GetHistoryImage(i), BFS.ClipboardFusion.GetHistoryFileList(i));
                        this.lvItems.Items.Add(item.ToListViewItem());
                    }
                
                    break;
                case "Local Pinned":
                    for(int i = 0; i < BFS.ClipboardFusion.GetLocalPinnedItemCount(); i++)
                    {
                        ClipboardItem item = new ClipboardItem(BFS.ClipboardFusion.GetLocalPinnedText(i) , BFS.ClipboardFusion.GetLocalPinnedImage(i), BFS.ClipboardFusion.GetLocalPinnedFileList(i));
                        this.lvItems.Items.Add(item.ToListViewItem());
                    }
                
                    break;
                case "Recent Online":
                    foreach(string text in BFS.ClipboardFusion.CFOGetAllSavedText())
                        this.lvItems.Items.Add(new ClipboardItem(text).ToListViewItem());
                
                    break;
                case "Pinned Online":
                    foreach(string text in BFS.ClipboardFusion.CFOGetAllPinnedText() )
                        this.lvItems.Items.Add(new ClipboardItem(text).ToListViewItem());
                
                    break;
                    
            }
		}
	}
}