<#
  build-native.ps1 - compile the native C# app (no ps2exe) to dist\ClaudeProxy.exe.
  Uses the .NET Framework C# compiler (csc), which is present on every Windows machine.
#>
$ErrorActionPreference = 'Stop'
$root = Split-Path -Parent $MyInvocation.MyCommand.Path
$dist = Join-Path $root 'dist'
New-Item -ItemType Directory -Force -Path $dist | Out-Null

$csc = 'C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe'
if (-not (Test-Path $csc)) { throw "csc not found: $csc" }

# make sure the icon and the embedded Xray zip exist
if (-not (Test-Path (Join-Path $root 'icon.ico'))) {
  & powershell.exe -NoProfile -ExecutionPolicy Bypass -File (Join-Path $root 'make-icon.ps1') | Out-Null
}
# Xray binary (embedded as a resource). Not stored in git - fetch the pinned release if missing.
$xrayZip = Join-Path $root 'xray.zip'
if (-not (Test-Path $xrayZip)) {
  $ver = 'v26.3.27'
  $base = "https://github.com/XTLS/Xray-core/releases/download/$ver"
  Write-Host "Fetching Xray-core $ver..." -ForegroundColor Cyan
  [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12
  Invoke-WebRequest "$base/Xray-windows-64.zip" -OutFile $xrayZip -UseBasicParsing
  Invoke-WebRequest "$base/Xray-windows-64.zip.dgst" -OutFile "$xrayZip.dgst" -UseBasicParsing
  $expected = $null
  foreach ($l in (Get-Content "$xrayZip.dgst")) {
    if ($l -match '512') { continue }
    if ($l -match '256' -and $l -match '([0-9a-fA-F]{64})') { $expected = $Matches[1].ToLower(); break }
  }
  $actual = (Get-FileHash $xrayZip -Algorithm SHA256).Hash.ToLower()
  Remove-Item "$xrayZip.dgst" -ErrorAction SilentlyContinue
  if ($expected -and $actual -ne $expected) { Remove-Item $xrayZip -ErrorAction SilentlyContinue; throw "Xray SHA256 mismatch." }
  Write-Host "  Xray SHA256 ok." -ForegroundColor DarkGray
}

$out = Join-Path $dist 'ClaudeProxy.exe'
$refs = @('System.dll', 'System.Core.dll', 'System.Windows.Forms.dll', 'System.Drawing.dll',
  'System.IO.Compression.dll', 'System.IO.Compression.FileSystem.dll', 'Microsoft.CSharp.dll')

$args = @(
  '/nologo', '/target:winexe', '/platform:x64', "/out:$out",
  "/win32icon:$(Join-Path $root 'icon.ico')",
  "/win32manifest:$(Join-Path $root 'native\app.manifest')",
  "/resource:$(Join-Path $root 'xray.zip'),ClaudeProxy.xray.zip"
)
foreach ($r in $refs) { $args += "/reference:$r" }
$args += (Join-Path $root 'native\Core.cs')
$args += (Join-Path $root 'native\Support.cs')
$args += (Join-Path $root 'native\MainForm.cs')

Write-Host "Compiling native C# -> $out" -ForegroundColor Cyan
& $csc @args
if ($LASTEXITCODE -ne 0) { throw "csc failed (exit $LASTEXITCODE)" }

$sz = [math]::Round((Get-Item $out).Length / 1MB, 1)
Write-Host "OK: $out ($sz MB)" -ForegroundColor Green