A functional script to turn a light on and off when entering and leaving Teams and Skype Meetings

OnAirFlow.ps1

#Companion Code to blog post found on FoxDeploy.com 'DIY On-Air Light for Microsoft Teams'

Add-Type -Path "C:\Program Files (x86)\Microsoft Office 2013\LyncSDK\Assemblies\Desktop\Microsoft.Lync.Model.dll";
$lightOnEventName = "meetingStart"
$lightOffEventName = "meetingStop"
$iftttKey = '<YourKeyGoesHere>'
$sleepInterval = 180

$lyncclient = [Microsoft.Lync.Model.LyncClient]::GetClient()
$LastState = $null 

 Function meetingStart {
 irm https://maker.ifttt.com/trigger/$lightOnEventName/with/key/$iftttKey -method Post 
 }

 Function meetingStop {
 irm https://maker.ifttt.com/trigger/$lightOffEventName/with/key/$iftttKey -method Post 
 }



Function Get-LyncMyAvailabilityState{   
    $MyContact = $lyncclient.Self.Contact;
    $myState = $MyContact.GetContactInformation("Availability")

    switch ($myState){
        (12500) {$state="Be right back"}
        (15500) {$state="Appearing Away"}
        (3500) {$state="Available"}
        (6500) {$state="Busy"}
        (9500) {$state="Do Not Disturb"}
        Default {$state = "Other State"}
    }    
    return [psCustomObject]@{MySipAddress=$MyContact.Uri;Availability=$state}
}

while($true){
    $date = (Get-Date -Format "HH:mm:ss")
    $status = get-LyncMyAvailabilityState
    if ($LastState -eq $status.Availability){
        "[$date] status not changed from $LastState, light should stay the same..."
        start-sleep -Seconds $sleepInterval 
        Continue
    }
    
    if ($status.Availability -in ("Available", "Be right back", "Appearing Away")){        
        "[$date] user status set to $($status.availability), light should be off"
        meetingStop
        $LastState = $status.Availability
        }    
    else{
        "[$date] user status set to $($status.availability), light should be on"
         meetingStart
         $LastState = $status.Availability
    }    
    
    start-sleep -Seconds $sleepInterval 
}