# 창진 에이전트(cjagent) 설치 스크립트 — Windows PowerShell
#   irm https://cjsoft.bonzaworld.live/download/install.ps1 | iex
# 다른 서버에서 호스팅 시: $env:CJAGENT_BASE_URL 로 오버라이드.
$ErrorActionPreference = "Stop"
$Base = if ($env:CJAGENT_BASE_URL) { $env:CJAGENT_BASE_URL.TrimEnd('/') } else { "https://cjsoft.bonzaworld.live" }

Write-Host ""
Write-Host "  창진 에이전트(cjagent) 설치" -ForegroundColor Cyan
Write-Host "  ---------------------------" -ForegroundColor DarkGray

# ── 1) Python 3.10+ 탐지 ──
function Test-Py($exe, $pre) {
    try {
        $v = & $exe @pre --version 2>&1
        if ($v -match 'Python (\d+)\.(\d+)') {
            $maj = [int]$Matches[1]; $min = [int]$Matches[2]
            if ($maj -gt 3 -or ($maj -eq 3 -and $min -ge 10)) { return $true }
        }
    } catch {}
    return $false
}
$PyExe = $null; $PyArgs = @()
if ((Get-Command py -ErrorAction SilentlyContinue) -and (Test-Py 'py' @('-3')))      { $PyExe = 'py';      $PyArgs = @('-3') }
elseif ((Get-Command python -ErrorAction SilentlyContinue) -and (Test-Py 'python' @())) { $PyExe = 'python' }
elseif ((Get-Command python3 -ErrorAction SilentlyContinue) -and (Test-Py 'python3' @())) { $PyExe = 'python3' }

if (-not $PyExe) {
    Write-Host "  [오류] Python 3.10+ 가 필요합니다." -ForegroundColor Red
    Write-Host "         https://www.python.org/downloads/ 에서 설치 후 다시 실행하세요." -ForegroundColor Yellow
    exit 1
}
Write-Host ("  Python : " + (& $PyExe @PyArgs --version 2>&1)) -ForegroundColor Gray

# ── 2) 최신 버전 메타 (content-type/BOM에 견고하게 파싱) ──
$Wheel = "cjagent-0.71.0-py3-none-any.whl"
try {
    $raw = (Invoke-WebRequest "$Base/download/latest.json" -UseBasicParsing -TimeoutSec 10).Content
    if ($raw) { $raw = $raw.TrimStart([char]0xFEFF); $meta = $raw | ConvertFrom-Json; if ($meta.wheel) { $Wheel = $meta.wheel } }
} catch {}
$Url = "$Base/download/$Wheel"
Write-Host "  패키지 : $Wheel" -ForegroundColor Gray

# ── 3) 설치 (pipx 우선 → pip --user 폴백) ──
if (Get-Command pipx -ErrorAction SilentlyContinue) {
    Write-Host "  방법   : pipx (격리 설치)" -ForegroundColor Gray
    Write-Host ""
    pipx install --force $Url
    if ($LASTEXITCODE -ne 0) { Write-Host "  [오류] 설치 실패 (위 메시지를 확인하세요)." -ForegroundColor Red; exit 1 }
} else {
    # pipx가 없으면 전용 가상환경(격리·안전) + 사용자 PATH 등록
    Write-Host "  방법   : 전용 가상환경 (pipx 미설치)" -ForegroundColor Gray
    Write-Host ""
    $venv = Join-Path $env:LOCALAPPDATA "cjagent\venv"
    & $PyExe @PyArgs -m venv $venv
    if ($LASTEXITCODE -ne 0) { Write-Host "  [오류] 가상환경 생성 실패." -ForegroundColor Red; exit 1 }
    & (Join-Path $venv "Scripts\python.exe") -m pip install --upgrade $Url
    if ($LASTEXITCODE -ne 0) { Write-Host "  [오류] 설치 실패 (위 메시지를 확인하세요)." -ForegroundColor Red; exit 1 }
    $scripts = Join-Path $venv "Scripts"
    $userPath = [Environment]::GetEnvironmentVariable("Path", "User")
    if (-not $userPath) { $userPath = "" }
    if ($userPath -notlike "*$scripts*") {
        [Environment]::SetEnvironmentVariable("Path", ($userPath.TrimEnd(';') + ";" + $scripts), "User")
        Write-Host "  PATH에 추가됨: $scripts  (새 터미널부터 적용)" -ForegroundColor Gray
    }
    Write-Host "  실행 파일: $scripts\cjagent.exe" -ForegroundColor Gray
}

Write-Host ""
Write-Host "  설치 완료!" -ForegroundColor Green
Write-Host "  다음을 실행해 보세요:" -ForegroundColor White
Write-Host "    cjagent doctor      # 환경 진단(모델 서버·PATH 확인)" -ForegroundColor Cyan
Write-Host "    cjagent web         # 웹 UI 실행" -ForegroundColor Cyan
Write-Host ""
Write-Host "  * 'cjagent' 명령을 못 찾으면 새 터미널을 열거나 PATH(사용자 Scripts 폴더)를 확인하세요." -ForegroundColor DarkGray