Powershell - If web page has been updated? Push notification to webhook URL!

gistfile1.txt

<##############################################################
If webpage has been updated? Push notification to webhook URL!

Created: 17/01/18
By: Karl Smith
Version: 0.1
###############################################################>

# URL to scrape
$url ='URL to scrape'

# Test URL
#$url =''

# Request Webpage
$response = Invoke-WebRequest -Uri $url

# Webhook URL
$webhook = 'Webhook URL'

# Webook Parameters
$params = @{
    Headers = @{'accept'='application/json'}
    Body = $bodytext | convertto-json
    Method = 'Post'
    URI = $webhook 
}

# Todays Date
$todaysdate = get-date -format M/dd/yyyy

# LastUpdated div id
$LastUpdated = $response.AllElements.FindById('LastUpdated') | select innerText

# If LastUpdated div content is equal to todays date, send http post to webhook url.
if($LastUpdated.innerText -eq $todaysdate){
    $bodytext = @{
        'text'= "Text to include in the HTTP POST"
    }
    Invoke-RestMethod @params
}else{
  write-host ("No update today :(")
}