$pathsToPreserve = @()
$originalPath = $env:PATH -split ';'
foreach ($pathEntry in $originalPath) {
    if ($pathEntry -match 'CMake|Python|Git|System32|WindowsApps') {
        $pathsToPreserve += $pathEntry
    }
}

Get-ChildItem env: | Where-Object { $_.Name -match "^INCLUDE$|^LIB$|^LIBPATH$" } | ForEach-Object {
    Remove-Item "env:\$($_.Name)"
}

$env:Path = $pathsToPreserve -join ';'

$vcTools = "C:\Program Files\Microsoft Visual Studio\18\Community\VC\Tools\MSVC\14.50.35717"
$vcHost = "Hostx64\x64"

$clPath = "$vcTools\bin\$vcHost"
$env:Path = "$clPath;$env:Path"

$sdkBase = "C:\Program Files (x86)\Windows Kits\10"
$sdkVersions = Get-ChildItem "$sdkBase\Include" -Directory |
                Where-Object { $_.Name -match "^\d+\.\d+" } |
                Sort-Object Name -Descending

if ($sdkVersions) {
    $latestSdk = $sdkVersions[0].Name

    $sdkBin = "$sdkBase\bin\$latestSdk\x64"
    $env:Path = "$sdkBin;$env:Path"

    $includePaths = @(
        "$vcTools\include",
        "$sdkBase\Include\$latestSdk\um",
        "$sdkBase\Include\$latestSdk\shared",
        "$sdkBase\Include\$latestSdk\ucrt"
    )
    $env:INCLUDE = ($includePaths -join ';')

    $libPaths = @(
        "$vcTools\lib\x64",
        "$sdkBase\Lib\$latestSdk\um\x64",
        "$sdkBase\Lib\$latestSdk\ucrt\x64"
    )
    $env:LIB = ($libPaths -join ';')

    $env:LIBPATH = "$vcTools\lib\x64;$sdkBase\Lib\$latestSdk\um\x64"
} else {
    Write-Host "Warning: Using generic SDK path" -ForegroundColor Yellow
    $env:Path = "$sdkBase\bin\x64;$env:Path"
    $env:INCLUDE = "$vcTools\include"
    $env:LIB = "$vcTools\lib\x64"
}

$libFiles = @(
    "$vcTools\lib\x64\MSVCRTD.lib",
    "$vcTools\lib\x64\MSVCRT.lib"
)

foreach ($lib in $libFiles) {
    if (-not (Test-Path $lib)) {
        Write-Host "$(Split-Path $lib -Leaf)" -ForegroundColor Red
    }
}

# Generate .clangd configuration file
$clangdContent = @"
CompileFlags:
  CompilationDatabase: build/
  Add:
    - -I$sdkBase\Include\$latestSdk\um
    - -I$sdkBase\Include\$latestSdk\shared
    - -I$sdkBase\Include\$latestSdk\ucrt
    - -I$vcTools\include
    - -I`${workspaceFolder}/include
  Remove: []

Diagnostics:
  ClangTidy:
    Add:
      - "*"
    Remove:
      - modernize-use-trailing-return-type
  UnusedIncludes: Strict

Index:
  Background: Build
"@

$clangdPath = "..\.clangd"
$clangdContent | Out-File -FilePath $clangdPath -Encoding UTF8