# DMS 一体化构建脚本（Java 版）
# 用法：在项目根目录执行 .\build\build-java.ps1
# 产物：dist-package-java\dms-server\（dms-server.jar 内置前端）
[CmdletBinding()]
param(
    [switch]$SkipFrontend
)

$ErrorActionPreference = "Stop"
$ProjectRoot = Split-Path $PSScriptRoot -Parent
$Backend = Join-Path $ProjectRoot "backend-java"
$Frontend = Join-Path $ProjectRoot "frontend"
$Dist = Join-Path $ProjectRoot "dist-package-java"
$Templates = Join-Path $PSScriptRoot "java-templates"

Write-Host "========== DMS 一体化构建（Java 版） ==========" -ForegroundColor Cyan
Write-Host "项目根目录: $ProjectRoot"

# ---------- 1. 前端构建 ----------
if (-not $SkipFrontend) {
    Write-Host "`n[1/4] 构建前端..." -ForegroundColor Yellow
    Push-Location $Frontend
    try {
        if (-not (Test-Path "node_modules")) {
            Write-Host "  npm install..." -ForegroundColor DarkGray
            npm install
            if ($LASTEXITCODE -ne 0) { throw "npm install 失败" }
        }
        npm run build
        if ($LASTEXITCODE -ne 0) { throw "前端构建失败" }
    } finally { Pop-Location }
} else {
    Write-Host "`n[1/4] 跳过前端构建 (-SkipFrontend)" -ForegroundColor DarkGray
}

$indexHtml = Join-Path $Frontend "dist\index.html"
if (-not (Test-Path $indexHtml)) {
    throw "前端产物不存在: $indexHtml - 请先执行 npm run build"
}

# ---------- 2. Maven 打包（-Pfrontend 把前端 dist 合入 jar 的 static） ----------
Write-Host "`n[2/4] Maven 打包..." -ForegroundColor Yellow
Push-Location $Backend
try {
    mvn -q clean package -Pfrontend
    if ($LASTEXITCODE -ne 0) { throw "Maven 打包失败" }
} finally { Pop-Location }

$JarFile = Join-Path $Backend "target\dms-server.jar"
if (-not (Test-Path $JarFile)) { throw "未找到打包产物: $JarFile" }

# ---------- 3. 整理发行包 ----------
Write-Host "`n[3/4] 整理发行包..." -ForegroundColor Yellow
$ReleaseDir = Join-Path $Dist "dms-server"
# 暂存现有 .env 与 dms-storage：删除发行目录前移出，重打包后自动还原，
# 避免用户配置与运行数据每次丢失（dms-storage 用移动而非复制，同卷瞬时完成）
$KeepEnv = Join-Path $Dist ".env.keep"
$KeepStorage = Join-Path $Dist "dms-storage.keep"
if (Test-Path (Join-Path $ReleaseDir ".env")) {
    Copy-Item (Join-Path $ReleaseDir ".env") $KeepEnv -Force
}
# 备份管理配置（界面保存的 rsync 地址等）同样暂存，避免重打包丢失
$KeepBackupCfg = Join-Path $Dist "dms-backup-config.keep"
if (Test-Path (Join-Path $ReleaseDir "dms-backup-config.json")) {
    Copy-Item (Join-Path $ReleaseDir "dms-backup-config.json") $KeepBackupCfg -Force
}
if (Test-Path (Join-Path $ReleaseDir "dms-storage")) {
    if (Test-Path $KeepStorage) { Remove-Item $KeepStorage -Recurse -Force }
    try {
        Move-Item (Join-Path $ReleaseDir "dms-storage") $KeepStorage -ErrorAction Stop
    } catch {
        # dms-storage 被运行中的服务占用（文件句柄未释放）：中止打包而非删数据
        throw "dms-storage 暂存失败（可能被运行中的服务占用）：$_ - 请先停止 dms-server 再打包"
    }
}
if (Test-Path $ReleaseDir) {
    try {
        Remove-Item $ReleaseDir -Recurse -Force -ErrorAction Stop
    } catch {
        # 目录被其他进程占用（如命令行窗口停留在该目录内）：保留目录节点，清空内容
        Write-Warning "发行目录被其他进程占用，改为清空目录内容后继续"
        Get-ChildItem $ReleaseDir -Force | Remove-Item -Recurse -Force
    }
}
New-Item $ReleaseDir -ItemType Directory -Force | Out-Null

Copy-Item $JarFile $ReleaseDir -Force
# 配置模板：现役 Java 版专属 .env.example（Python 版已废弃且两份已漂移，
# backend-java 版含 DMS_SSO_* 单点登录代理段，勿再指向 backend\）
Copy-Item (Join-Path $ProjectRoot "backend-java\.env.example") $ReleaseDir -Force
# 启动/升级脚本与说明
Copy-Item (Join-Path $Templates "run.bat") $ReleaseDir -Force
Copy-Item (Join-Path $Templates "run.sh") $ReleaseDir -Force
Copy-Item (Join-Path $Templates "upgrade-db.bat") $ReleaseDir -Force
Copy-Item (Join-Path $Templates "upgrade-db.sh") $ReleaseDir -Force
Copy-Item (Join-Path $Templates "README.txt") $ReleaseDir -Force

# rsync 备份工具：Windows 发行包随包携带 cwRsync（rsync.exe + cygwin dll），
# RSYNC 备份模式开箱即用；Linux 用系统 rsync 无需二进制（探测顺序见
# RsyncBackupTarget.locateExecutable：DMS_RSYNC_EXECUTABLE → PATH → tools/rsync）
$RsyncTools = Join-Path $PSScriptRoot "tools\rsync"
if (Test-Path $RsyncTools) {
    Copy-Item $RsyncTools (Join-Path $ReleaseDir "tools\rsync") -Recurse -Force
    Write-Host "  已内置 rsync 备份工具（tools\rsync）" -ForegroundColor DarkGray
} else {
    Write-Warning "未找到 $RsyncTools，发行包不含内置 rsync（RSYNC 备份模式需目标机自装或配置 DMS_RSYNC_EXECUTABLE）"
}

# 示例数据库 SQL（与后端语言无关，复用同一导出工具）
# 工具三参数均必填：--env-file 提供库连接、--storage 提供文件根、--output 为输出目录
# （产物含 full_demo_data.sql 与 storage 文件副本），仅取 SQL 进发行包，临时目录用完即删
$ExportTool = Join-Path $ProjectRoot "tools\export_full_demo_data.py"
$ExportedSql = Join-Path $ReleaseDir "database-init.sql"
if (Test-Path $ExportTool) {
    # 导出工具是 Python 版组件：env/storage 按 Python 后端目录与运行时 .env 位置查找
    # 运行时 .env 不在 backend 目录：按优先级取最新的现有配置（暂存 > 备份 > backend）
    $PyBackend = Join-Path $ProjectRoot "backend"
    $ExportEnv = @(
        $KeepEnv,
        (Join-Path $ProjectRoot "dist-package-java-bak\dms-server\.env"),
        (Join-Path $PyBackend ".env")
    ) | Where-Object { Test-Path $_ } | Select-Object -First 1
    $ExportStorage = Join-Path $PyBackend "dms-storage"
    if (-not $ExportEnv) {
        Write-Warning "未找到可用的 .env（暂存 .env.keep / 备份目录 / backend\.env），跳过自动导出"
    } elseif (-not (Test-Path $ExportStorage)) {
        Write-Warning "未找到存储目录 $ExportStorage，跳过自动导出"
    } else {
        Write-Host "  导出示例数据库 SQL..." -ForegroundColor DarkGray
        $ExportTmp = Join-Path ([System.IO.Path]::GetTempPath()) "dms-demo-export"
        if (Test-Path $ExportTmp) { Remove-Item $ExportTmp -Recurse -Force }
        try {
            python $ExportTool --env-file $ExportEnv --storage $ExportStorage --output $ExportTmp 2>&1 | Out-Host
            $ExportedSource = Join-Path $ExportTmp "full_demo_data.sql"
            if (Test-Path $ExportedSource) {
                Copy-Item $ExportedSource $ExportedSql -Force
                Write-Host "  已生成 database-init.sql" -ForegroundColor DarkGray
            } else {
                Write-Warning "导出工具未生成 full_demo_data.sql，请手动准备 SQL 文件"
            }
        } catch {
            Write-Warning "导出工具执行失败：$_"
        } finally {
            if (Test-Path $ExportTmp) { Remove-Item $ExportTmp -Recurse -Force }
        }
    }
} else {
    Write-Warning "未找到 tools\export_full_demo_data.py，跳过自动导出"
}

# ---------- 4. 恢复 .env 和 dms-storage ----------
# 优先级：打包前暂存（原地数据，Move 回） > 备份目录；发行目录已有的 dms-storage 绝不覆盖
Write-Host "`n[4/4] 恢复 .env 和 dms-storage..." -ForegroundColor Yellow
$BackupDir = Join-Path $ProjectRoot "dist-package-java-bak\dms-server"
if (-not (Test-Path $BackupDir)) {
    Write-Host "  备份目录不存在: $BackupDir - 跳过备份恢复" -ForegroundColor DarkGray
} else {
    $BackupEnv = Join-Path $BackupDir ".env"
    if (Test-Path $BackupEnv) {
        Copy-Item $BackupEnv $ReleaseDir -Force
        Write-Host "  已恢复 .env（备份）" -ForegroundColor DarkGray
    } else {
        Write-Warning "备份中没有 .env，跳过"
    }
}
if (Test-Path $KeepStorage) {
    Move-Item $KeepStorage (Join-Path $ReleaseDir "dms-storage") -Force
    Write-Host "  已保留重打包前的 dms-storage" -ForegroundColor DarkGray
} elseif ((Test-Path $BackupDir) -and (Test-Path (Join-Path $BackupDir "dms-storage"))) {
    Copy-Item (Join-Path $BackupDir "dms-storage") (Join-Path $ReleaseDir "dms-storage") -Recurse -Force
    Write-Host "  已恢复 dms-storage（备份）" -ForegroundColor DarkGray
} else {
    Write-Host "  无 dms-storage 可恢复（暂存与备份均无），跳过" -ForegroundColor DarkGray
}

# 还原打包前暂存的 .env（优先级高于备份目录，始终保留用户最新配置）
if (Test-Path $KeepEnv) {
    Copy-Item $KeepEnv (Join-Path $ReleaseDir ".env") -Force
    Remove-Item $KeepEnv -Force
    Write-Host "  已保留重打包前的 .env" -ForegroundColor DarkGray
}
# 还原打包前暂存的备份管理配置
if (Test-Path $KeepBackupCfg) {
    Copy-Item $KeepBackupCfg (Join-Path $ReleaseDir "dms-backup-config.json") -Force
    Remove-Item $KeepBackupCfg -Force
    Write-Host "  已保留重打包前的 dms-backup-config.json" -ForegroundColor DarkGray
}

Write-Host "`n========== 构建完成（Java 版） ==========" -ForegroundColor Green
Write-Host "发行包目录: $ReleaseDir" -ForegroundColor Green
$sizeMB = [math]::Round((Get-ChildItem $ReleaseDir -Recurse | Measure-Object -Property Length -Sum).Sum / 1MB, 1)
Write-Host "包大小: ${sizeMB} MB" -ForegroundColor Green
Write-Host "将该目录整体压缩即可分发给最终用户" -ForegroundColor Green