Powershell: Can't post to Slack with otherwise working script

Question

I am totally new to Powershell, but I needed an all-Windows solution for a Slack bot that monitors local folders.

I am able to use the CLI to post to Slack successfully with the following two commands:

$postSlackMessage = @{token="";channel="#general";text="Test message";username="Bot User"}

Invoke-RestMethod -Uri https://slack.com/api/chat.postMessage -Body $postSlackMessage

I am also able to monitor the folder using the script provided on this superuser answer by @nixda.

My version of this great solution doesn't seem to cut it. Here it is:

### SET FOLDER TO WATCH + FILES TO WATCH + SUBFOLDERS YES/NO
    $watcher = New-Object System.IO.FileSystemWatcher
    $watcher.Path = "C:\Location\"
    $watcher.Filter = "*.*"
    $watcher.IncludeSubdirectories = $false
    $watcher.EnableRaisingEvents = $true  

### DEFINE ACTIONS AFTER A EVENT IS DETECTED
    $action = { $path = $Event.SourceEventArgs.FullPath
                $changeType = $Event.SourceEventArgs.ChangeType
                $token = ""
                $channel = "$general"
                $text = "$changeType, $path"
                $username = "Bot User"
                $postSlackMessage = @{token=$token; channel=$channel; text=$text; username=$username}
                Invoke-RestMethod -Uri https://slack.com/api/chat.postMessage -Body $postSlackMessage
              }    
### DECIDE WHICH EVENTS SHOULD BE WATCHED + SET CHECK FREQUENCY  
    $created = Register-ObjectEvent $watcher "Created" -Action $action
    $changed = Register-ObjectEvent $watcher "Changed" -Action $action
    $deleted = Register-ObjectEvent $watcher "Deleted" -Action $action
    $renamed = Register-ObjectEvent $watcher "Renamed" -Action $action
    while ($true) {sleep 5}

I've tried a number of different variations on this and I am not sure what I'm doing wrong. I can get the nixda script to work and write to a txt file but changing the action to Invoke-RestMethod doesn't work.

Is this a syntax problem I'm not getting, or something greater I'm missing?

score 0 · Accepted Answer · answered Sep 28 '17 at 18:57

Since there are a few views on this I'll post the corrected script, as pointed out by Techie007. It was only a minor typo and this posts to Slack if you'd like use Powershell scripts to watch folders in Windows:

### SET FOLDER TO WATCH + FILES TO WATCH + SUBFOLDERS YES/NO
    $watcher = New-Object System.IO.FileSystemWatcher
    $watcher.Path = "C:\Location\"
    $watcher.Filter = "*.*"
    $watcher.IncludeSubdirectories = $false
    $watcher.EnableRaisingEvents = $true  

### DEFINE ACTIONS AFTER A EVENT IS DETECTED
    $action = { $path = $Event.SourceEventArgs.FullPath
                $changeType = $Event.SourceEventArgs.ChangeType
                $token = ""
                $channel = "#general"
                $text = "$changeType, $path"
                $username = "Bot User"
                $postSlackMessage = @{token=$token; channel=$channel; text=$text; username=$username}
                Invoke-RestMethod -Uri https://slack.com/api/chat.postMessage -Body $postSlackMessage
              }    
### DECIDE WHICH EVENTS SHOULD BE WATCHED + SET CHECK FREQUENCY  
    $created = Register-ObjectEvent $watcher "Created" -Action $action
    $changed = Register-ObjectEvent $watcher "Changed" -Action $action
    $deleted = Register-ObjectEvent $watcher "Deleted" -Action $action
    $renamed = Register-ObjectEvent $watcher "Renamed" -Action $action
    while ($true) {sleep 5}

Powershell: Can't post to Slack with otherwise working script

1 Answers1