# ============================================================
# 文传易 一键发布脚本
#  1. dotnet publish 后端 (Release, net8.0)
#  2. npm run build 前端 (Vite, dist)
#  3. FTP 上传合并产物至 IIS 站点根目录
#
# 用法:
#   powershell -ExecutionPolicy Bypass -File deploy/publish.ps1
#
# 前置: 本机已安装 .NET 8 SDK / Node.js >=18; FTP 凭据见下方变量
# ============================================================
param(
    [string]$FtpHost  = "116.198.221.125",
    [int]   $FtpPort  = 21,
    [string]$FtpUser  = "wenchuanyi",
    [string]$FtpPass  = "r7P^f*v7rFts",
    [string]$RemoteRoot = "/",        # FTP 远端目标目录 (IIS 站点根目录)
    [switch]$SkipBuild                 # 跳过构建, 仅上传已有产物
)

$ErrorActionPreference = "Stop"
$Root = Split-Path -Parent $PSScriptRoot
$BackendDir = Join-Path $Root "backend\WenChuanyi.Api"
$FrontendDir = Join-Path $Root "frontend"
$PublishDir = Join-Path $BackendDir "bin\Release\net8.0\publish"
$DistDir = Join-Path $FrontendDir "dist"
$StagingDir = Join-Path $env:TEMP "wcy_publish_staging"

# ---------------- 1. 构建 ----------------
if (-not $SkipBuild) {
    Write-Host "==> [1/3] 构建后端..." -ForegroundColor Cyan
    Push-Location $BackendDir
    try { dotnet publish -c Release --nologo -v q }
    finally { Pop-Location }

    Write-Host "==> [2/3] 构建前端..." -ForegroundColor Cyan
    if (-not (Test-Path (Join-Path $FrontendDir "node_modules"))) {
        Write-Host "    首次构建, 安装 npm 依赖..." -ForegroundColor Yellow
        Push-Location $FrontendDir
        try { npm install --no-audit --no-fund }
        finally { Pop-Location }
    }
    Push-Location $FrontendDir
    try { npm run build }
    finally { Pop-Location }
} else {
    Write-Host "==> [1-2/3] 跳过构建 (SkipBuild)..." -ForegroundColor Yellow
}

if (-not (Test-Path $PublishDir)) { throw "后端发布目录不存在: $PublishDir (请先 dotnet publish)" }
if (-not (Test-Path $DistDir))    { throw "前端产物目录不存在: $DistDir (请先 npm run build)" }

# ---------------- 2. 合并产物到临时目录 ----------------
Write-Host "==> [3/3] 合并产物并 FTP 上传..." -ForegroundColor Cyan
if (Test-Path $StagingDir) { Remove-Item $StagingDir -Recurse -Force }
New-Item -ItemType Directory -Path $StagingDir -Force | Out-Null

Copy-Item "$DistDir\*" $StagingDir -Recurse -Force
Copy-Item "$PublishDir\*" $StagingDir -Recurse -Force

Write-Host "    产物合计: $((Get-ChildItem $StagingDir -File -Recurse | Measure-Object).Count) 个文件" -ForegroundColor Gray

# ---------------- FTP 工具函数 ----------------
function New-FtpRequest([string]$path, [string]$method) {
    $uri = "ftp://${FtpHost}:${FtpPort}/" + $path.TrimStart('/')
    $req = [System.Net.FtpWebRequest]::Create($uri)
    $req.Method = $method
    $req.Credentials = New-Object System.Net.NetworkCredential($FtpUser, $FtpPass)
    $req.UsePassive = $true
    $req.UseBinary = $true
    $req.KeepAlive = $false
    return $req
}

function New-FtpDirectory([string]$remotePath) {
    $req = New-FtpRequest $remotePath ([System.Net.WebRequestMethods+Ftp]::MakeDirectory)
    try { $null = $req.GetResponse() }
    catch { }   # 目录已存在时报错, 忽略
}

function Send-FtpFile([string]$localPath, [string]$remotePath) {
    $req = New-FtpRequest $remotePath ([System.Net.WebRequestMethods+Ftp]::UploadFile)
    $bytes = [System.IO.File]::ReadAllBytes($localPath)
    $req.ContentLength = $bytes.Length
    $stream = $req.GetRequestStream()
    try {
        $stream.Write($bytes, 0, $bytes.Length)
    } finally {
        $stream.Close()
    }
    $resp = $req.GetResponse()
    try { $resp.Close() } catch { }
}

function Send-FtpDirectory([string]$localDir, [string]$remoteDir) {
    foreach ($dir in Get-ChildItem $localDir -Directory) {
        $child = "$remoteDir/$($dir.Name)"
        New-FtpDirectory $child
        Send-FtpDirectory $dir.FullName $child
    }
    foreach ($file in Get-ChildItem $localDir -File) {
        $remoteFile = "$remoteDir/$($file.Name)"
        Send-FtpFile $file.FullName $remoteFile
        Write-Host "    UP $remoteFile" -ForegroundColor Gray
    }
}

# ---------------- 上传 ----------------
New-FtpDirectory $RemoteRoot
Send-FtpDirectory $StagingDir $RemoteRoot

Remove-Item $StagingDir -Recurse -Force

Write-Host ""
Write-Host "============================================================" -ForegroundColor Green
Write-Host " 发布完成! 请手动回收 IIS 应用程序池使新版本生效:" -ForegroundColor Green
Write-Host "   IIS 管理器 -> 应用程序池 -> wenchuanyi -> 右键回收" -ForegroundColor Green
Write-Host "   或: appcmd recycle apppool /apppool.name:wenchuanyi" -ForegroundColor Green
Write-Host "============================================================" -ForegroundColor Green