uninstall.ps1

[CmdletBinding(SupportsShouldProcess = $true)]
param(
    [string]$InstallDir = (Join-Path $env:LOCALAPPDATA "Programs\MiniTaskbar"),
    [string]$RunKey = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Run",
    [switch]$SkipRestore
)

$ErrorActionPreference = "Stop"

$programsRoot = [System.IO.Path]::GetFullPath((Join-Path $env:LOCALAPPDATA "Programs"))
$defaultInstallDir = [System.IO.Path]::GetFullPath((Join-Path $env:LOCALAPPDATA "Programs\MiniTaskbar"))
$resolvedInstallDir = [System.IO.Path]::GetFullPath($InstallDir)
$temporaryRoot = [System.IO.Path]::GetFullPath([System.IO.Path]::GetTempPath()).TrimEnd([System.IO.Path]::DirectorySeparatorChar)
$temporaryTestPrefix = Join-Path $temporaryRoot "MiniTaskbarInstallTests-"
$temporaryTestPattern = '^' + [System.Text.RegularExpressions.Regex]::Escape($temporaryTestPrefix) + '[0-9a-f]{32}\\install$'
$isDefaultInstallDir = [System.String]::Equals($resolvedInstallDir, $defaultInstallDir, [System.StringComparison]::OrdinalIgnoreCase)
$isTemporaryInstallDir = $resolvedInstallDir -match $temporaryTestPattern
$defaultRunKey = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Run"
$isDefaultRunKey = [System.String]::Equals($RunKey, $defaultRunKey, [System.StringComparison]::OrdinalIgnoreCase)
$isTemporaryRunKey = $RunKey -match '^HKCU:\\Software\\MiniTaskbarTests\\[0-9a-f]{32}$'
$installedExe = Join-Path $resolvedInstallDir "mini_taskbar.exe"
$applied = $false

if (-not (($isDefaultInstallDir -and $isDefaultRunKey) -or ($isTemporaryInstallDir -and $isTemporaryRunKey))) {
    throw "Refusing to uninstall an unexpected target: $resolvedInstallDir with $RunKey"
}

if ($SkipRestore -and -not $isTemporaryInstallDir) {
    throw "SkipRestore is allowed only for temporary test installations."
}

if (-not ($isTemporaryInstallDir -or $resolvedInstallDir.StartsWith($programsRoot + [System.IO.Path]::DirectorySeparatorChar, [System.StringComparison]::OrdinalIgnoreCase))) {
    throw "Refusing to remove an unexpected directory: $resolvedInstallDir"
}

if ($PSCmdlet.ShouldProcess($resolvedInstallDir, "Unregister, restore and remove MiniTaskbar")) {
    Remove-ItemProperty -LiteralPath $RunKey -Name "MiniTaskbar" -ErrorAction SilentlyContinue

    Get-Process -Name "mini_taskbar" -ErrorAction SilentlyContinue |
        Where-Object { $_.Path -eq $installedExe } |
        Stop-Process -Force -ErrorAction SilentlyContinue

    if ((Test-Path -LiteralPath $installedExe) -and -not $SkipRestore) {
        & $installedExe --restore
    }

    if (Test-Path -LiteralPath $resolvedInstallDir) {
        Remove-Item -LiteralPath $resolvedInstallDir -Recurse -Force
    }

    $applied = $true
}

[pscustomobject]@{
    InstallDir = $resolvedInstallDir
    Applied = $applied
}