using System;
using System.Collections.Generic;

// 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)
	{
        // Tell ClipboardFusion to ignore any changes to the Clipboard
        BFS.ClipboardFusion.PauseClipboardListener();
	
        // If the clipboard manager is open, reset the index and paste
        // Otherwise, keep incrementing the index and pasting
        
        IntPtr handle;
        if( IsClipboardManagerOpen(out handle) )
        {
            // Get the selected Clipboard Manager index, and make sure that it's at least 0
            int index = BFS.ClipboardFusion.GetClipboardManagerSelectedIndex();
            if(index == -1)
                index = 0;
            
            // Save the value
            BFS.ScriptSettings.WriteValueInt("ClipboardFusion_Script_IncrementIndex", index);
                
            // Paste the selected index
            BFS.Clipboard.PasteText( BFS.ClipboardFusion.GetHistoryText(index) );
            
            // Close the ClipboardManager
            BFS.Window.Close(handle);
		}
		else
		{
            // Get the saved index
            int index = BFS.ScriptSettings.ReadValueInt("ClipboardFusion_Script_IncrementIndex");
        
            // Increment the index
            index++;
        
            // Save the incremented index
            BFS.ScriptSettings.WriteValueInt("ClipboardFusion_Script_IncrementIndex", index);
        
            // Tell ClipboardFusion to ignore any changes to the Clipboard
            BFS.ClipboardFusion.PauseClipboardListener();
                    
            // Paste the selected index
            BFS.Clipboard.PasteText( BFS.ClipboardFusion.GetHistoryText(index) );
		}
		
		// Get ClipboardFusion to start watching the Clipboard again
        BFS.ClipboardFusion.ResumeClipboardListener();
		
		// Tell ClipboardFusion to not do anything with the result of this Macro
		return null;
	}
	
	// This isn't the 
	private static bool IsClipboardManagerOpen(out IntPtr handle)
    {
        handle = IntPtr.Zero;
    
        // Loop through all visible windows and look for a window with the right title that is run by the ClipboardFusion process
        foreach(IntPtr window in BFS.Window.GetVisibleWindowHandles())
        {
            if(BFS.Window.GetText(window).IndexOf("ClipboardFusion", StringComparison.OrdinalIgnoreCase) != 0)
                continue;
            
            if(BFS.Application.GetMainFileByWindow(window).IndexOf("clipboardfusion.exe", StringComparison.OrdinalIgnoreCase) == -1)
                continue;
            
            // Set the handle to the window we found
            handle = window;
            return true;
        }
        
        // If we got this far, that means we didn't find anything
        return false;
    }
}