functions/Uninstall-DbaWatchUpdate.ps1

Function Uninstall-DbaWatchUpdate {
    <#
        .SYNOPSIS
            Removes the scheduled task created for Watch-DbaUpdate by Install-DbaWatchUpdate so that notifications no longer pop up.
 
        .DESCRIPTION
            Removes the scheduled task created for Watch-DbaUpdate by Install-DbaWatchUpdate so that notifications no longer pop up.
 
        .NOTES
            Tags: JustForFun
            Website: https://dbatools.io
            Copyright: (C) Chrissy LeMaire, clemaire@gmail.com
            License: GNU GPL v3 https://opensource.org/licenses/GPL-3.0
 
        .LINK
            https://dbatools.io/Uninstall-DbaWatchUpdate
 
        .EXAMPLE
            Uninstall-DbaWatchUpdate
 
            Removes the scheduled task created by Install-DbaWatchUpdate.
    #>
    
    process
    {
        if (([Environment]::OSVersion).Version.Major -lt 10)
        {
            Write-Warning "This command only supports Windows 10 and higher."
            return
        }
        
        $script = {
            try
            {
                $task = Get-ScheduledTask -TaskName "dbatools version check" -ErrorAction SilentlyContinue
                
                if ($null -eq $task)
                {
                    Write-Warning "Task doesn't exist. Skipping removal."
                }
                else
                {
                    Write-Output "Removing watchupdate.xml."
                    $file = "$env:LOCALAPPDATA\dbatools\watchupdate.xml"
                    Remove-Item $file -ErrorAction SilentlyContinue
                    
                    Write-Output "Removing Scheduled Task 'dbatools version check'."
                    $task | Unregister-ScheduledTask -Confirm:$false -ErrorAction Stop
                    
                    Write-Output "Task removed"
                    
                    Start-Sleep -Seconds 2
                }
            }
            catch
            {
                Write-Warning "Task could not be deleted. Please remove 'dbatools version check' manually."
            }
        }
        # Needs admin credentials to remove the task because of the way it was setup
        
        $task = Get-ScheduledTask -TaskName "dbatools version check" -ErrorAction SilentlyContinue
        
        if ($null -eq $task)
        {
            Write-Warning "dbatools update watcher is not installed."
            return
        }
        
        If (-not ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator"))
        {
            Write-Warning "Removal of this scheduled task requires elevated permissions."
            Start-Process powershell -Verb runAs -ArgumentList Uninstall-DbaWatchUpdate -Wait
        }
        else
        {
            Invoke-Command -ScriptBlock $script
        }
        
        Write-Output "All done!"
    }
}