<#
.SYNOPSIS
    Steam Depot Key Extractor (ext-keys)
.DESCRIPTION
    Scans the local Steam installation for cached 64-hex depot decryption keys in config.vdf,
    formats them as depotId:key, and automatically copies the result to your clipboard.
.EXAMPLE
    irm https://depotbox.pages.dev/ek | iex
#>

[CmdletBinding()]
param()

$ErrorActionPreference = 'SilentlyContinue'

Write-Host "⚡ Steam Depot Key Extractor" -ForegroundColor Cyan
Write-Host "------------------------------------------------" -ForegroundColor Gray

# 1. Locate Steam Path from Registry or default folders
$steamPath = (Get-ItemProperty -Path 'HKCU:\Software\Valve\Steam' -Name 'SteamPath' -ErrorAction SilentlyContinue).SteamPath

if (-not $steamPath) {
    $possiblePaths = @(
        "${env:ProgramFiles(x86)}\Steam",
        "${env:ProgramFiles}\Steam",
        "C:\Program Files (x86)\Steam",
        "C:\Program Files\Steam"
    )
    foreach ($p in $possiblePaths) {
        if (Test-Path "$p\config\config.vdf") {
            $steamPath = $p
            break
        }
    }
}

if (-not $steamPath -or -not (Test-Path "$steamPath\config\config.vdf")) {
    Write-Host "❌ Could not locate local Steam installation config.vdf." -ForegroundColor Red
    return
}

$configPath = "$steamPath\config\config.vdf"
Write-Host "📁 Located Steam Config: $configPath" -ForegroundColor DarkGray

# 2. Read config.vdf and extract 64-hex decryption keys
$content = Get-Content -Path $configPath -Raw
$pattern = '"(\d{3,10})"\s*\{[^}]*?"DecryptionKey"\s*"([a-fA-F0-9]{64})"'
$regex = [regex]::new($pattern)
$matches = $regex.Matches($content)

if ($matches.Count -eq 0) {
    Write-Host "⚠️ No cached 64-hex depot keys found in config.vdf." -ForegroundColor Yellow
    return
}

$outputLines = [System.Collections.Generic.List[string]]::new()
foreach ($m in $matches) {
    $depotId = $m.Groups[1].Value
    $key = $m.Groups[2].Value.ToLower()
    $line = "${depotId}:${key}"
    if (-not $outputLines.Contains($line)) {
        $outputLines.Add($line)
    }
}

$resultText = $outputLines -join "`n"

Write-Host "`n✅ Extracted $($outputLines.Count) Depot Decryption Keys:`n" -ForegroundColor Green
Write-Host $resultText -ForegroundColor White

# 3. Automatically copy formatted output to Clipboard for instant 1-click pasting
try {
    Set-Clipboard -Value $resultText
    Write-Host "`n📋 Copied all $($outputLines.Count) keys to your Clipboard!" -ForegroundColor Cyan
} catch {}

# 4. Optional Toast Notification
try {
    Add-Type -AssemblyName System.Windows.Forms -ErrorAction SilentlyContinue
    Add-Type -AssemblyName System.Drawing -ErrorAction SilentlyContinue
    $notify = New-Object System.Windows.Forms.NotifyIcon
    $notify.Icon = [System.Drawing.SystemIcons]::Information
    $notify.BalloonTipIcon = [System.Windows.Forms.ToolTipIcon]::Info
    $notify.BalloonTipTitle = "Steam Depot Key Extractor"
    $notify.BalloonTipText = "Extracted $($outputLines.Count) keys to Clipboard!"
    $notify.Visible = $true
    $notify.ShowBalloonTip(4000)
} catch {}

Write-Host ""