#!/bin/bash
# Node.js 版本诊断脚本

echo "=========================================="
echo "   Node.js 环境诊断工具"
echo "=========================================="
echo ""

echo "[1] 当前 Node.js 版本"
echo "-----------------------------------"
if command -v node &> /dev/null; then
    NODE_VERSION=$(node -v)
    echo "✅ Node.js: $NODE_VERSION"
    
    MAJOR_VERSION=$(echo $NODE_VERSION | cut -d'.' -f1 | sed 's/v//')
    if [ "$MAJOR_VERSION" -ge 18 ]; then
        echo "✅ 版本满足要求 (需要 ≥18.x)"
    else
        echo "❌ 版本不满足要求 (当前: v$MAJOR_VERSION, 需要: ≥18)"
    fi
else
    echo "❌ Node.js 未安装"
fi
echo ""

echo "[2] npm 版本"
echo "-----------------------------------"
if command -v npm &> /dev/null; then
    NPM_VERSION=$(npm -v)
    echo "✅ npm: $NPM_VERSION"
else
    echo "❌ npm 未安装"
fi
echo ""

echo "[3] Node.js 安装路径"
echo "-----------------------------------"
which node
which npm
echo ""

echo "[4] 宝塔面板 Node.js 版本"
echo "-----------------------------------"
if [ -d "/www/server/nodejs" ]; then
    echo "已安装的版本："
    ls -1 /www/server/nodejs/ | grep -E "^v[0-9]" | while read version; do
        NODE_PATH="/www/server/nodejs/$version/bin/node"
        if [ -f "$NODE_PATH" ]; then
            VERSION=$($NODE_PATH -v 2>/dev/null)
            MAJOR=$(echo $VERSION | cut -d'.' -f1 | sed 's/v//')
            if [ "$MAJOR" -ge 18 ]; then
                echo "  ✅ $version ($VERSION) - 可用"
            else
                echo "  ⚠️  $version ($VERSION) - 版本太低"
            fi
        fi
    done
else
    echo "⚠️  未检测到宝塔面板 Node.js 安装目录"
fi
echo ""

echo "[5] nvm 状态"
echo "-----------------------------------"
if command -v nvm &> /dev/null; then
    echo "✅ nvm 已安装"
    nvm list
elif [ -d "$HOME/.nvm" ]; then
    echo "✅ nvm 已安装（需要加载）"
    echo "执行: source ~/.nvm/nvm.sh"
else
    echo "⚠️  nvm 未安装"
fi
echo ""

echo "[6] 项目依赖检查"
echo "-----------------------------------"
if [ -f "package.json" ]; then
    echo "✅ package.json 存在"
    
    # 检查 engines 字段
    if grep -q "engines" package.json; then
        echo "项目要求的 Node 版本："
        grep -A 2 "engines" package.json
    fi
    
    # 检查主要依赖
    echo ""
    echo "关键依赖版本："
    grep -E "(next|prisma|@prisma/client)" package.json | sed 's/^/  /'
else
    echo "❌ package.json 不存在"
fi
echo ""

echo "[7] Prisma 状态"
echo "-----------------------------------"
if [ -d "node_modules/@prisma/client" ]; then
    echo "✅ Prisma 客户端已安装"
    if [ -f "node_modules/.prisma/client/index.js" ]; then
        echo "✅ Prisma 客户端已生成"
    else
        echo "⚠️  Prisma 客户端未生成，需要运行: npx prisma generate"
    fi
else
    echo "❌ Prisma 客户端未安装"
fi
echo ""

echo "[8] 环境变量"
echo "-----------------------------------"
echo "PATH:"
echo "$PATH" | tr ':' '\n' | grep -E "(node|npm)" | sed 's/^/  /'
echo ""

echo "=========================================="
echo "   诊断完成"
echo "=========================================="
echo ""

# 给出建议
NODE_MAJOR=0
if command -v node &> /dev/null; then
    NODE_MAJOR=$(node -v | cut -d'.' -f1 | sed 's/v//')
fi

if [ "$NODE_MAJOR" -lt 18 ]; then
    echo "🎯 推荐操作："
    echo ""
    echo "1️⃣ 使用宝塔面板安装 Node.js 18："
    echo "   软件商店 → Node版本管理器 → 安装 v18.x"
    echo ""
    echo "2️⃣ 或使用命令行安装："
    if [ -d "/www/server/nodejs/v18.20.0" ]; then
        echo "   export PATH=/www/server/nodejs/v18.20.0/bin:\$PATH"
    else
        echo "   curl -fsSL https://rpm.nodesource.com/setup_18.x | bash -"
        echo "   dnf install -y nodejs"
    fi
    echo ""
    echo "3️⃣ 然后重新安装依赖："
    echo "   cd /www/wwwroot/sucai"
    echo "   rm -rf node_modules package-lock.json"
    echo "   npm install"
    echo ""
else
    echo "✅ Node.js 版本正常"
    echo ""
    echo "🎯 如果还有问题，尝试："
    echo "   rm -rf node_modules package-lock.json"
    echo "   npm cache clean --force"
    echo "   npm install"
    echo ""
fi