$ErrorActionPreference = "Stop"

$repoUrl = if ($env:ANUREO_REPO_URL) { $env:ANUREO_REPO_URL } else { "https://github.com/hi-youichi/anureo-tunnel.git" }
$installDir = if ($env:ANUREO_INSTALL_DIR) { $env:ANUREO_INSTALL_DIR } else { Join-Path $env:LOCALAPPDATA "Anureo\bin" }

foreach ($commandName in @("git", "cmake")) {
  if (-not (Get-Command $commandName -ErrorAction SilentlyContinue)) {
    throw "Anureo installer: missing required command: $commandName"
  }
}

$workDir = Join-Path ([System.IO.Path]::GetTempPath()) ("anureo-install-" + [guid]::NewGuid().ToString("N"))
try {
  Write-Host "Cloning Anureo Tunnel..."
  git clone --depth 1 $repoUrl (Join-Path $workDir "anureo-tunnel")

  Write-Host "Building Anureo CLI..."
  cmake -S (Join-Path $workDir "anureo-tunnel\cli") -B (Join-Path $workDir "build") -DBUILD_TESTING=OFF
  cmake --build (Join-Path $workDir "build") --config Release --parallel

  New-Item -ItemType Directory -Force $installDir | Out-Null
  Copy-Item (Join-Path $workDir "build\Release\anureo.exe") (Join-Path $installDir "anureo.exe") -Force

  $userPath = [Environment]::GetEnvironmentVariable("Path", "User")
  $pathEntries = @($userPath -split ";" | Where-Object { $_ })
  if ($pathEntries -notcontains $installDir) {
    [Environment]::SetEnvironmentVariable("Path", (($pathEntries + $installDir) -join ";"), "User")
  }
  $env:Path = "$installDir;$env:Path"

  Write-Host "Installed Anureo CLI to $(Join-Path $installDir 'anureo.exe')"
  Write-Host "Run: anureo expose --anonymous http://127.0.0.1:8080"
}
finally {
  if (Test-Path $workDir) { Remove-Item -Recurse -Force $workDir }
}