Processing Ajax...

Title

Message

Confirm

Confirm

Confirm

Confirm

Are you sure you want to delete this item?

Confirm

Are you sure you want to delete this item?

Watch for New Slack Message

Description
This script shows a tray message when the text "NEW_NOTIFICATION" is found in the Slack log.
Language
C#.net
Minimum Version
Created By
Thomas Malloch (BFS)
Contributors
-
Date Created
Jun 1, 2018
Date Last Modified
Jun 1, 2018

Scripted Function (Macro) Code

using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Threading;
using System.Windows.Forms;

// The 'windowHandle' parameter will contain the window handle for the:
//   - Active window when run by hotkey
//   - Trigger target when run by a Trigger rule
//   - TitleBar Button owner when run by a TitleBar Button
//   - Jump List owner when run from a Taskbar Jump List
//   - Currently focused window if none of these match
public static class DisplayFusionFunction
{
    /////////////////////////////////////////////////////////////////////////////////////
    //Note: Replace the "Path" variable with the file you want to watch,               //
    //      and replace the "SearchText" varaible with the text you want to watch for  //
    /////////////////////////////////////////////////////////////////////////////////////
    private static readonly string Path = @"C:\Users\UserName\AppData\Roaming\Slack\logs\browser.log";
    private static readonly string SearchText = "NEW_NOTIFICATION";

	public static void Run(IntPtr windowHandle)
	{
        // Create a new FileTailWatcher with the parameters of our choosing
		using(FileTailWatcher watcher = new FileTailWatcher(Path, SearchText))
		{
            // Assign the event that will get fired when the text is found in the file
            watcher.OnSearchTextFound += SlackWatcher_OnSearchTextFound;
            
            // Run the FileTailWatcher App
            Application.Run(watcher);
        }
	}
	
	// This event gets fired when the search text gets found
	private static void SlackWatcher_OnSearchTextFound()
	{
        // Put any code you want here
        BFS.Dialog.ShowTrayMessage("Hey You! You have a new slack message!!!");
	}
	
	// This custom class uses a FileSystemWatcher to watch for changes in
	private class FileTailWatcher : ApplicationContext
	{
        // Variables
        private long LastFileSize = 0;
        private FileSystemWatcher Watcher;
        private readonly string Path;
        private readonly string SearchText;
        
        // Delegates and Events
        public delegate void DelegateVoid();
        public event DelegateVoid OnSearchTextFound;
	
        // This function sets up the class, and starts watching the end of the file
        public FileTailWatcher(string path, string searchText)
        {
            this.Path = path;
			this.SearchText = searchText;
        
            FileInfo info = new FileInfo(this.Path);
            this.LastFileSize = info.Length;
			this.Watcher = new FileSystemWatcher(info.DirectoryName, info.Name);
			this.Watcher.Changed += this.Watcher_Changed;
			this.Watcher.EnableRaisingEvents = true;
        }
        
        // Do some cleanup
        protected override void Dispose(bool disposing)
        {
            if(this.Watcher != null)
                this.Watcher.Dispose();
            
            base.Dispose(disposing);
        }
        
        // This method gets run when the file we're watching changes
        private void Watcher_Changed(object sender, FileSystemEventArgs e)
		{
            // Get the new file size
            long length = new FileInfo(this.Path).Length;
            
            // No point of looking through an empty file
            // When other apps write to the file, they might also clear it, so don't set LastFileSize
            if(length == 0)
                return;
            
            // If the file is the same size, ignore the change
            if (length == this.LastFileSize)
                return;
		
            // Open the file for reading, but allow other programs to read and write from the file
			using (FileStream file = File.Open(this.Path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
			using (StreamReader reader = new StreamReader(file))
			{
				//set the position of the stream to the last file size
				reader.BaseStream.Position = this.LastFileSize;

				//read each line until we find the EOF, or what we're looking for
				while (true)
				{
					string line = reader.ReadLine();
					if (line == null)
						break;
                    
                    // The text we're looking for isn't going to be on an empty line
                    if(string.IsNullOrEmpty(line))
                        continue;

                    //if we havn't found our text on this line, continue to the next one
					if (line.IndexOf(this.SearchText, StringComparison.OrdinalIgnoreCase) == -1)
						continue;
                    
					// If we got this far, we found what we wanted. no need to keep looking through the file.
					// Fire the event
                    if(this.OnSearchTextFound != null)
                        this.OnSearchTextFound();
                    
					break;
				}
			}
			
			// Set our last position searched
            this.LastFileSize = length;
		}
	}
}