# AI Terminal daemon installer (Windows PowerShell)
# 用法: iwr ai-terminal.cn/i.ps1 | iex
# 或:  iwr ai-terminal.org/install.ps1 | iex
#
# Windows 原生支持: v1.3.2+ 通过 node-pty (ConPTY) 直接在 Windows 跑 PowerShell/cmd
# 不再需要 WSL. 依赖: Node.js 18+, Windows 10 1809+ (Build 17763+, ConPTY 要求)

$ErrorActionPreference = 'Stop'

function Write-Info($msg) { Write-Host "→ $msg" -ForegroundColor Blue }
function Write-Success($msg) { Write-Host "✓ $msg" -ForegroundColor Green }
function Write-Warn($msg) { Write-Host "! $msg" -ForegroundColor Yellow }
function Write-Err($msg) { Write-Host "✗ $msg" -ForegroundColor Red }

Write-Host "╔══════════════════════════════════════╗" -ForegroundColor Blue
Write-Host "║      AI Terminal Installer           ║" -ForegroundColor Blue
Write-Host "╚══════════════════════════════════════╝" -ForegroundColor Blue
Write-Host ""

# 1. 检测 WSL 环境 (用户在 WSL 里跑了 PowerShell 命令的反向场景)
if (Test-Path "/proc/version") {
    Write-Warn "检测到你在 WSL 里运行 Windows 安装脚本"
    Write-Host "  建议: 用 Linux 命令: " -NoNewline
    Write-Host "curl -fL ai-terminal.cn/i | sh" -ForegroundColor Blue
    $confirm = Read-Host "继续装 Windows 版? (y/N)"
    if ($confirm -ne 'y') { exit 0 }
}

# 2. 检测 Windows 版本 (Windows 10 1809+ Build 17763 需要 ConPTY)
$winVer = [System.Environment]::OSVersion.Version
if ($winVer.Major -lt 10) {
    Write-Err "需要 Windows 10 或更高版本 (当前: $($winVer.ToString()))"
    exit 1
}
if ($winVer.Build -lt 17763) {
    Write-Err "Windows 版本过低 (Build $($winVer.Build)), 需要 Build 17763+ (Windows 10 1809)"
    Write-Host "  node-pty 依赖的 ConPTY API 需要此最低版本"
    exit 1
}
Write-Success "Windows $($winVer.Major).$($winVer.Build)"

# 3. 检测 PowerShell 版本
if ($PSVersionTable.PSVersion.Major -lt 5) {
    Write-Err "需要 PowerShell 5.1 或更高 (当前: $($PSVersionTable.PSVersion))"
    exit 1
}
Write-Success "PowerShell $($PSVersionTable.PSVersion)"

# 4. 检测 Node.js
try {
    $nodeVer = (node -v 2>$null).Trim().TrimStart('v')
    $nodeMajor = [int]($nodeVer -split '\.')[0]
    if ($nodeMajor -lt 18) {
        Write-Err "Node.js 版本过低: v$nodeVer (需要 18+)"
        exit 1
    }
    Write-Success "Node.js v$nodeVer"
} catch {
    Write-Err "没有检测到 Node.js"
    Write-Host "  请先安装 Node.js 18+:" -ForegroundColor Yellow
    Write-Host "  方式 1: 访问 https://nodejs.org 下载 LTS 版"
    Write-Host "  方式 2 (winget): " -NoNewline
    Write-Host "winget install OpenJS.NodeJS.LTS" -ForegroundColor Blue
    Write-Host "  方式 3 (scoop): " -NoNewline
    Write-Host "scoop install nodejs-lts" -ForegroundColor Blue
    exit 1
}

# 5. 从 npm 安装 termctl (会通过 optionalDependencies 自动装 node-pty 的 Windows prebuilt 二进制)
Write-Info "正在从 npm 安装 termctl..."
try {
    npm install -g termctl
    Write-Success "termctl 已安装"
} catch {
    Write-Err "npm 安装失败: $_"
    Write-Host "  可能原因:"
    Write-Host "  1. 需要管理员 PowerShell (右键 '以管理员身份运行')"
    Write-Host "  2. node-pty native binding 下载失败 (检查网络)"
    exit 1
}

# 6. 验证 node-pty 已安装 (Windows daemon 必需)
Write-Info "验证 node-pty 二进制..."
try {
    $nptyPath = (npm root -g).Trim() + "\termctl\node_modules\node-pty"
    if (Test-Path $nptyPath) {
        Write-Success "node-pty 已就绪"
    } else {
        Write-Warn "node-pty 未找到, daemon 可能无法启动 PowerShell"
        Write-Host "  手动安装: npm install -g node-pty"
    }
} catch {}

Write-Host ""
Write-Info "启动 daemon..."
Write-Warn "终端会显示二维码, 在手机 AI Terminal APP 上扫描即可配对"
Write-Host ""
& termctl