Monitor your Zwift log file and outputs the latest Ride On

logwatch.ps1

# Copyright 2020 Jonas Häggqvist <rasher@rasher.dk>
#
# Usage of the works is permitted provided that this instrument is retained with the
# works, so that any entity that uses the works is notified of this instrument.
#
# DISCLAIMER: THE WORKS ARE WITHOUT WARRANTY.


# This script monitors your Zwift log file and outputs the latest Ride On to a given
# output file. The output file is updated at most every N ms (6000), to try and follow
# the Zwift GUI.
# 
# Possible bug: If the log file is truncated or becomes smaller in any way, Powershell
# appears to panic and start outputting the entire file. Not sure there's any way to
# prevent that. May be fixed in new PowerShell versions? Written/tested on 5.1. It
# should not happen anyway unless Zwift does something really weird. This of course
# means it will.

#
# Additional comments from Daren:
# 
# I know no Powershell but I hacked this about to add some additional files as output
# 
# - a total number of Ride Ons received in the session
# - the number of Ride Ons given in the session

$docs = [environment]::GetFolderPath("MyDocuments")
$zwift = "$docs\Zwift"                  # Zwift data directory
$log = "$zwift\Logs\Log.txt"            # Path to Zwift log file
#$output = "$zwift\Logs\LastRideon.txt"  # File to write output to
$output = "LastRideon.txt"  # File to write output to
$outputCount = "TotalRideOns.txt"  # File to write output to
$outputGivenCount = "TotalRideOnsGiven.txt"  # File to write output to
$delay = 1000                           # Delay in ms between updates of the file
$prefix = ""                            # Added in the logfile in front of the username
$postfix = " says Ride On!"             # Added after the username

$count = 0 # count of number of ride ons

Function Write-SlowOutput {
[CmdletBinding()]
param (
    [Parameter(Mandatory=$true,
                HelpMessage="How long to pause for (ms)")]
    [int32]$waitFor,
    [Parameter(Mandatory=$false,
                HelpMessage="File to output to")]
    [string]$outputFile,
	[string]$outputFileCount,
    [Parameter(ValueFromPipeline)]
    [Object]$input
)
BEGIN {}
PROCESS {
    if ($input -match "^\d+$") {
		
		Write-Host $input Ride Ons given

		if (!(Test-Path $outputGivenCount)) {
			New-Item -name $outputGivenCount -type "file" -value "$input Ride Ons given"
		} else {
			Out-File -Encoding UTF8 -FilePath $outputGivenCount -InputObject "$input Ride Ons given"
		}		
	} else {
		$count++;
		Write-Host $count $input
		if ($outputFile) {
			Out-File -Append -Encoding UTF8 -FilePath $outputFile -InputObject $input
		}
		if ($outputFileCount) {
		
			if (!(Test-Path $outputFileCount)) {
				New-Item -name $outputFileCount -type "file" -value "$count Ride Ons"
			} else {
				Out-File -Encoding UTF8 -FilePath $outputFileCount -InputObject "$count Ride Ons"
			}
			
		}
	}
    Start-Sleep -Milliseconds $waitFor
}
END {}

}

if (Test-Path $outputCount) {
	Out-File -Encoding UTF8 -FilePath $outputCount -InputObject "0 Ride Ons"
}

if (Test-Path $outputGivenCount) {
	Out-File -Encoding UTF8 -FilePath $outputGivenCount -InputObject "0 Ride Ons given"
}

Get-Content -Tail 0 -Wait -Encoding "UTF8" $log | 
  Select-String "HUD_Notify: (.*) says Ride On!","Total Ride Ons Given: (.*)" |
   % {$prefix + $_.matches.groups[1].value} |
    Write-SlowOutput -outputFile $output -outputFileCount $outputCount -waitFor $delay

Cool

excuse my dumb question:
but how do i get this running to show rideons on my twitch stream ?

excuse my dumb question:
but how do i get this running to show rideons on my twitch stream ?

You need to run Windows Powershell, then inside that run the script.

Then you just add a new Text input overlay in OBS/SLOBS or whatever you use, pointing at the relevant text files.

ok with your help it works now 50%.
only ride ons i give is put in the totalrideonsgiven.txt.
thelastrideons.txt is not generated nor does it appear in the powersehll script. only given rideons is shown in the powersehll

UPDATE:
Nevermind, i got it fixed. The German Log Files are not compatible with the script. my bad