Return codes from preinstall mods

[MIDItheKID]

I am cobbling something together to prompt\toast users if an application needs to be closed in order to update. It offers users the ability to defer, with a deferral counter (when it reaches 0, it will close the software automatically and update). It creates scheduled tasks and ServiceUI and a bunch of other stuff that Romanitho would like to avoid, but there is one part that is causing me issues. If the user clicks on "Close" the app will get closed, and then the update will continue. That's all great. If the user clicks on "Defer", the app will stay open, it will download the update, attempt to install it, and then fail. For that reason, it would be great if preinstall mods could have functional return\exit codes - For example, if a preinstall mod returns Exit 100, then do not attempt the update for that app.

I'm sure there could be other exit codes and uses as well.

[KnifMelti]

I don't know if this is someting you can use:
https://github.com/Romanitho/Winget-AutoUpdate/blob/main/Sources/Winget-AutoUpdate/mods/README.md
If AppID-preinstall.ps1/-preuninstall.ps1 returns $false, the install/update/uninstall for that AppID is skipped (checking if an App is running, etc...).

# Beginning of Process Name to check for if running - optional wildcard (*) after, without .exe, multiple: "proc1*","proc2"
# If found, it will return $False (to $preInstall-/UninstallResult), stop this script and request for the main script to skip the app.
$SkipApp = @("")

And:

In addition to this legacy handling, a new action-based system is now supported.
This system lets you define multiple actions and conditions directly in your mod scripts, enabling more advanced automation and control over the WAU process.
With actions, you can execute different scripts, check results, and control the WAU flow with greater flexibility and improved logging 
compared to relying solely on Exit Code.

https://github.com/Romanitho/Winget-AutoUpdate/blob/main/Sources/Winget-AutoUpdate/mods/_WAU-mods-template.ps1

[MIDItheKID]

I totally forgot to come back here and update. I figured this out shortly after I posted. Yes, you can have it return $false, which then when coming back to the main script will skip that app. Worked perfectly. Just need to remember to set your return at the end of the preinstall mod