<#
.SYNOPSIS
    Vangu - GPT & Codex CLI Yapılandırma Scripti (Windows PowerShell)
.DESCRIPTION
    Vangu OpenAI ve Codex API uç noktalarını Windows ortam değişkenlerine kalıcı olarak işler.
.EXAMPLE
    irm https://vangu.dev/scripts/install-codex-cli.ps1 | iex
    veya:
    .\install-codex-cli.ps1 -ApiKey "vgu_live_your_key"
#>

[CmdletBinding()]
param (
    [Parameter(Mandatory = $false)]
    [string]$ApiKey = $env:VANGU_API_KEY,

    [Parameter(Mandatory = $false)]
    [string]$Model = "gpt-5.6-sol"
)

$ErrorActionPreference = "Stop"
$OpenAiUrl = "https://api.vangu.dev/v1"
$CodexUrl = "https://api.vangu.dev/codex/v1"

Write-Host "========================================================" -ForegroundColor Cyan
Write-Host " Vangu - GPT & Codex CLI Windows Yapilandirici" -ForegroundColor Cyan
Write-Host "========================================================" -ForegroundColor Cyan

# 1. API Anahtarı Alma
if ([string]::IsNullOrWhiteSpace($ApiKey)) {
    Write-Host ""
    Write-Host "--------------------------------------------------------"
    Write-Host "Vangu API Anahtarinizi girin (vgu_live_...):" -ForegroundColor Cyan
    $secureInput = Read-Host -Prompt "API Key" -AsSecureString
    $BSTR = [System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($secureInput)
    $ApiKey = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($BSTR)
    Write-Host "--------------------------------------------------------"
}

if ([string]::IsNullOrWhiteSpace($ApiKey)) {
    Write-Host "[!] API Anahtari bos birakildi. Isleme devam edilemez." -ForegroundColor Red
    exit 1
}

# 2. Windows Kullanıcı Ortam Değişkenlerine Kalıcı Olarak Yazma
Write-Host "[*] Ortam degiskenleri Windows Kullanici Duzeyinde tanimlaniyor..." -ForegroundColor Yellow
[System.Environment]::SetEnvironmentVariable("OPENAI_BASE_URL", $OpenAiUrl, [System.EnvironmentVariableTarget]::User)
[System.Environment]::SetEnvironmentVariable("OPENAI_API_BASE", $OpenAiUrl, [System.EnvironmentVariableTarget]::User)
[System.Environment]::SetEnvironmentVariable("OPENAI_API_KEY", $ApiKey, [System.EnvironmentVariableTarget]::User)
[System.Environment]::SetEnvironmentVariable("CODEX_API_BASE", $CodexUrl, [System.EnvironmentVariableTarget]::User)
[System.Environment]::SetEnvironmentVariable("CODEX_API_KEY", $ApiKey, [System.EnvironmentVariableTarget]::User)
[System.Environment]::SetEnvironmentVariable("VANGU_MODEL", $Model, [System.EnvironmentVariableTarget]::User)

# Aktif PowerShell oturumuna da ekle
$env:OPENAI_BASE_URL = $OpenAiUrl
$env:OPENAI_API_BASE = $OpenAiUrl
$env:OPENAI_API_KEY = $ApiKey
$env:CODEX_API_BASE = $CodexUrl
$env:CODEX_API_KEY = $ApiKey
$env:VANGU_MODEL = $Model

# 3. PowerShell Profiline yazma
if (Test-Path $PROFILE) {
    $profileContent = Get-Content $PROFILE -Raw -ErrorAction SilentlyContinue
    if ($profileContent -notmatch "Vangu OpenAI & Codex") {
        $profileAppend = @"

# --- Vangu OpenAI & Codex CLI ---
`$env:OPENAI_BASE_URL = "$OpenAiUrl"
`$env:OPENAI_API_BASE = "$OpenAiUrl"
`$env:OPENAI_API_KEY = "$ApiKey"
`$env:CODEX_API_BASE = "$CodexUrl"
`$env:CODEX_API_KEY = "$ApiKey"
`$env:VANGU_MODEL = "$Model"
# ---------------------------------
"@
        Add-Content -Path $PROFILE -Value $profileAppend
        Write-Host "[+] PowerShell profili guncellendi: $PROFILE" -ForegroundColor Green
    }
}

Write-Host ""
Write-Host "========================================================" -ForegroundColor Cyan
Write-Host " [OK] GPT & Codex Ortami Basariyla Hazirlandi!" -ForegroundColor Green
Write-Host "========================================================" -ForegroundColor Cyan
Write-Host " OpenAI Endpoint : $OpenAiUrl"
Write-Host " Codex Endpoint  : $CodexUrl"
Write-Host " Model           : $Model"
Write-Host ""
Write-Host "Ortam degiskenleri sisteminize kaydedildi. SDK ve CLI araclariniz dogrudan Vangu altyapisini kullanacaktir." -ForegroundColor White
Write-Host "========================================================" -ForegroundColor Cyan