$ErrorActionPreference = "Stop"

$Arch = if ([Environment]::Is64BitOperatingSystem) { "amd64" } else { throw "Unsupported architecture" }
$Version = if ($env:X4RGE_CLI_VERSION) { $env:X4RGE_CLI_VERSION } else { "latest" }
$Base = "https://4rged.ai/downloads/cli"
$Artifact = "4rged-$Version-windows-$Arch.zip"
$Temp = Join-Path ([System.IO.Path]::GetTempPath()) ([System.Guid]::NewGuid().ToString())
New-Item -ItemType Directory -Path $Temp | Out-Null

try {
  Invoke-WebRequest "$Base/$Artifact" -OutFile (Join-Path $Temp $Artifact)
  Invoke-WebRequest "$Base/$Artifact.sha256" -OutFile (Join-Path $Temp "$Artifact.sha256")
  $Expected = ((Get-Content (Join-Path $Temp "$Artifact.sha256")) -split " ")[0].ToLowerInvariant()
  $Actual = (Get-FileHash (Join-Path $Temp $Artifact) -Algorithm SHA256).Hash.ToLowerInvariant()
  if ($Expected -ne $Actual) { throw "Checksum verification failed" }

  Expand-Archive -Path (Join-Path $Temp $Artifact) -DestinationPath $Temp -Force
  $InstallDir = if ($env:X4RGE_CLI_INSTALL_DIR) { $env:X4RGE_CLI_INSTALL_DIR } else { Join-Path $env:LOCALAPPDATA "Programs\4RGED\bin" }
  New-Item -ItemType Directory -Path $InstallDir -Force | Out-Null
  Copy-Item (Join-Path $Temp "4rged.exe") (Join-Path $InstallDir "4rged.exe") -Force

  Write-Host "4RGED installed at $InstallDir\4rged.exe"
  Write-Host "Run: 4rged login"
  Write-Host "Then: 4rged"
} finally {
  Remove-Item -Recurse -Force $Temp -ErrorAction SilentlyContinue
}