fleet/ee/maintained-apps/inputs/winget/scripts/bleachbit_uninstall.ps1

# Fleet extracts name from installer (EXE) and saves it to PACKAGE_ID
# variable
# BleachBit registers DisplayName "BleachBit"; silent uninstall uses the
# NSIS /S flag.
$softwareName = "BleachBit"

# Match the DisplayName exactly to avoid uninstalling unintended software.
$uninstallArgs = "/S"

$machineKey = `
 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\*'
$machineKey32on64 = `
 'HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*'

$exitCode = 0

try {

[array]$uninstallKeys = Get-ChildItem `
    -Path @($machineKey, $machineKey32on64) `
    -ErrorAction SilentlyContinue |
        ForEach-Object { Get-ItemProperty $_.PSPath }

$foundUninstaller = $false
foreach ($key in $uninstallKeys) {
    if ($key.DisplayName -eq $softwareName) {
        $foundUninstaller = $true
        # Get the uninstall command. Some uninstallers do not include
        # 'QuietUninstallString' and require a flag to run silently.
        $uninstallCommand = if ($key.QuietUninstallString) {
            $key.QuietUninstallString
        } else {
            $key.UninstallString
        }

        # The uninstall command may contain command and args, like:
        # "C:\Program Files\Software\uninstall.exe" /SILENT
        # Split the command and args
        $splitArgs = $uninstallCommand.Split('"')
        if ($splitArgs.Length -gt 1) {
            if ($splitArgs.Length -eq 3) {
                $uninstallArgs = "$( $splitArgs[2] ) $uninstallArgs".Trim()
            } elseif ($splitArgs.Length -gt 3) {
                Throw `
                    "Uninstall command contains multiple quoted strings. " +
                        "Please update the uninstall script.`n" +
                        "Uninstall command: $uninstallCommand"
            }
            $uninstallCommand = $splitArgs[1]
        }
        Write-Host "Uninstall command: $uninstallCommand"
        Write-Host "Uninstall args: $uninstallArgs"

        $processOptions = @{
            FilePath = $uninstallCommand
            PassThru = $true
            Wait = $true
        }
        if ($uninstallArgs -ne '') {
            $processOptions.ArgumentList = "$uninstallArgs"
        }

        # Start process and track exit code
        $process = Start-Process @processOptions
        $exitCode = $process.ExitCode

        # Prints the exit code
        Write-Host "Uninstall exit code: $exitCode"
        # Exit the loop once the software is found and uninstalled.
        break
    }
}

if (-not $foundUninstaller) {
    Write-Host "Uninstaller for '$softwareName' not found."
    # Change exit code to 0 if you don't want to fail if uninstaller is not
    # found. This could happen if program was already uninstalled.
    $exitCode = 1
}

} catch {
    Write-Host "Error: $_"
    $exitCode = 1
}

Exit $exitCode