# Extended PHP location detector for IIS web.config

$searchPaths = @(
    "C:\PHP",
    "C:\Program Files\PHP",
    "C:\Program Files (x86)\PHP",
    "C:\php7",
    "C:\php8",
    "C:\wamp\bin\php",
    "C:\wamp64\bin\php",
    "C:\laragon\bin\php",
    "C:\inetpub\wwwroot\php",
    "C:\inetpub\wwwroot\PHP",
    "C:\inetpub\php",
    "C:\inetpub\PHP",
    "$env:SystemDrive\inetpub\wwwroot\php",
    "$env:SystemDrive\inetpub\php"
)

$phpPath = $null

# Method 1: Check if php-cgi.exe is in PATH
Write-Host "Searching for php-cgi.exe..." -ForegroundColor Cyan
$phpPath = (Get-Command php-cgi.exe -ErrorAction SilentlyContinue).Source

# Method 2: Search in default locations
if (-not $phpPath) {
    foreach ($basePath in $searchPaths) {
        if (Test-Path $basePath) {
            $found = Get-ChildItem -Path $basePath -Recurse -Filter "php-cgi.exe" -ErrorAction SilentlyContinue | 
                     Select-Object -First 1 -ExpandProperty FullName
            if ($found) {
                $phpPath = $found
                break
            }
        }
    }
}

# Method 3: Search entire C: drive (top-level folders only for speed)
if (-not $phpPath) {
    Write-Host "Searching C:\ drive..." -ForegroundColor Yellow
    $rootFolders = Get-ChildItem -Path "C:\" -Directory -ErrorAction SilentlyContinue | 
                   Where-Object { $_.Name -match 'php|wamp|laragon|inetpub' }
    foreach ($folder in $rootFolders) {
        $found = Get-ChildItem -Path $folder.FullName -Recurse -Filter "php-cgi.exe" -ErrorAction SilentlyContinue | 
                 Select-Object -First 1 -ExpandProperty FullName
        if ($found) {
            $phpPath = $found
            break
        }
    }
}

# Method 4: Check Windows Registry for PHP installations
if (-not $phpPath) {
    $regPaths = @(
        "HKLM:\SOFTWARE\PHP",
        "HKLM:\SOFTWARE\Wow6432Node\PHP"
    )
    foreach ($regPath in $regPaths) {
        if (Test-Path $regPath) {
            $installDir = (Get-ItemProperty -Path $regPath -Name "InstallDir" -ErrorAction SilentlyContinue).InstallDir
            if ($installDir) {
                $candidate = Join-Path $installDir "php-cgi.exe"
                if (Test-Path $candidate) {
                    $phpPath = $candidate
                    break
                }
            }
        }
    }
}

if ($phpPath) {
    Write-Host "`nFound: $phpPath" -ForegroundColor Green
    
    $webConfigPath = ".\web.config"
    if (Test-Path $webConfigPath) {
        $content = Get-Content $webConfigPath -Raw
        $newContent = $content -replace 'scriptProcessor="[^"]*"', "scriptProcessor=`"$phpPath`""
        
        if ($content -ne $newContent) {
            $newContent | Set-Content $webConfigPath -NoNewline
            Write-Host "Handler successfully updated in web.config!" -ForegroundColor Green
        } else {
            Write-Host "Handler was already set correctly." -ForegroundColor Yellow
        }
    } else {
        Write-Host "web.config not found in current directory!" -ForegroundColor Red
    }
} else {
    Write-Host "`nCould not find php-cgi.exe." -ForegroundColor Red
    Write-Host "Check if PHP is installed correctly." -ForegroundColor Red
}