#Requires -Version 5.1
<#
.SYNOPSIS
    Uninstalls DupFinder from this workstation.
#>

$principal = [Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()
if (-not $principal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) {
    Write-Error "This script must be run as Administrator."
    exit 1
}

$ConfigFile   = "C:\ProgramData\DupFinder\dupfinder.conf"
$AppDir       = "C:\ProgramData\DupFinder"
$ShortcutPath = "$env:PUBLIC\Desktop\DupFinder.lnk"

Write-Host ""
Write-Host "  DupFinder Uninstaller" -ForegroundColor Magenta
Write-Host ""

if (-not (Test-Path $ConfigFile)) {
    Write-Warning "DupFinder config not found. It may not be installed, or was already removed."
    exit 0
}

# Read config
$conf = @{}
Get-Content $ConfigFile | ForEach-Object {
    if ($_ -match '^(.+?)=(.+)$') { $conf[$Matches[1]] = $Matches[2] }
}
$ComposeDir  = $conf["COMPOSE_DIR"]
$DataPath    = $conf["DATA_PATH"]
$ComposeYml  = "$ComposeDir\docker-compose.yml"
$OverrideYml = "$ComposeDir\docker-compose.override.yml"

# ── Stop and remove container ─────────────────────────────────────────────────
Write-Host "Stopping and removing container..."
docker compose -f $ComposeYml -f $OverrideYml down 2>$null
Write-Host "  Done."

# ── Remove Docker image? ──────────────────────────────────────────────────────
$rmImage = Read-Host "Remove the DupFinder Docker image? Frees ~300-600 MB (Y/n)"
if ($rmImage -ne 'n' -and $rmImage -ne 'N') {
    docker rmi dupfinder:latest 2>$null
    Write-Host "  Image removed."
}

# ── Remove data directory? ────────────────────────────────────────────────────
Write-Host ""
Write-Host "Data directory: $DataPath"
Write-Host "This contains the scan database and all decisions."
$rmData = Read-Host "Remove data directory? This CANNOT be undone. (y/N)"
if ($rmData -eq 'y' -or $rmData -eq 'Y') {
    if (Test-Path $DataPath) {
        Remove-Item $DataPath -Recurse -Force
        Write-Host "  Data directory removed."
    }
} else {
    Write-Host "  Data directory kept at: $DataPath"
}

# ── Remove shortcut ───────────────────────────────────────────────────────────
if (Test-Path $ShortcutPath) {
    Remove-Item $ShortcutPath -Force
    Write-Host "Desktop shortcut removed."
}

# ── Remove app directory ──────────────────────────────────────────────────────
if (Test-Path $AppDir) {
    Remove-Item $AppDir -Recurse -Force
    Write-Host "App directory removed: $AppDir"
}

Write-Host ""
Write-Host "  DupFinder has been uninstalled." -ForegroundColor Green
Write-Host ""