#!/bin/bash
# ============================================================
# 服务器安全清理：只删冗余与可再生的，不动跑服务的代码
# 用法：cd /var/www/wildgrowth-backend/backend && bash deploy/scripts/server-cleanup-safe.sh
# 迁移后：无 backend/backend，无 sync；应用根 = backend/
# ============================================================

set -e
GIT_ROOT="/var/www/wildgrowth-backend"
BACKEND="$GIT_ROOT/backend"
cd "$BACKEND" || { echo "❌ 目录不存在: $BACKEND"; exit 1; }

echo "═══════════════════════════════════════════════════════════"
echo "  服务器安全清理（不动 src、prisma、deploy、.env、dist）"
echo "═══════════════════════════════════════════════════════════"

# 1. 迁移后冗余：嵌套 backend/ 或 backend/backend 整目录删除（已无 sync，不再需要）
echo ""
echo "1️⃣  清理冗余嵌套 backend..."
removed=
if [ -d "backend/backend" ]; then rm -rf backend/backend && removed=1; fi
if [ -d "backend" ]; then rm -rf backend && removed=1; fi  # 应用根下的 backend 子目录
[ -n "$removed" ] && echo "    ✅ 已删冗余 backend/" || echo "    (无冗余 backend，跳过)"

# 2. 应用根下本机冗余：.DS_Store、一次性脚本
echo ""
echo "2️⃣  清理应用根下冗余文件..."
for f in .DS_Store compile_content_service.sh deploy-fix-next-lesson.sh; do
  [ -f "$f" ] && rm -f "$f" && echo "    已删 $f"
done

# 3. 旧备份（若存在）
if ls "$GIT_ROOT"/backend-backup-* 1>/dev/null 2>&1; then
  rm -rf "$GIT_ROOT"/backend-backup-*
  echo "    ✅ 已删旧备份 backend-backup-*"
fi

# 4. 应用日志截断
echo ""
echo "4️⃣  截断 logs..."
if [ -f "logs/combined.log" ]; then
  s=$(du -sh logs/combined.log 2>/dev/null | cut -f1)
  > logs/combined.log
  echo "    已截断 logs/combined.log (原 $s)"
fi
if [ -f "logs/error.log" ]; then
  > logs/error.log
  echo "    已截断 logs/error.log"
fi

# 5. PM2 日志
echo ""
echo "5️⃣  清空 PM2 日志..."
pm2 flush 2>/dev/null && echo "    ✅ pm2 flush 完成" || echo "    ⚠️  pm2 flush 失败或未安装"

# 6. npm 缓存
echo ""
echo "6️⃣  清空 npm 缓存..."
npm cache clean --force 2>/dev/null && echo "    ✅ npm cache 已清理" || echo "    ⚠️  npm cache 清理失败"

echo ""
echo "═══════════════════════════════════════════════════════════"
echo "  安全清理完成"
echo "  可选（本机不构建 iOS 时）：rm -rf $GIT_ROOT/ios 释放约 5M（git pull 会拉回）"
echo "═══════════════════════════════════════════════════════════"