# 服务器配置
PORT=3001
NODE_ENV=development

# 客户端URL
CLIENT_URL=http://localhost:3000

# 数据库配置
MONGODB_URI=mongodb://localhost:27017/pdf-tools
REDIS_URL=redis://localhost:6379

# JWT密钥
JWT_SECRET=your-super-secret-jwt-key-change-in-production
JWT_EXPIRES_IN=24h

# 文件存储配置
UPLOAD_DIR=./uploads
MAX_FILE_SIZE=50MB
ALLOWED_FILE_TYPES=pdf,doc,docx,txt,html

# 转换引擎配置
CONVERSION_TIMEOUT=300000
MAX_CONCURRENT_CONVERSIONS=5

# 缓存配置
CACHE_TTL=3600
REDIS_PREFIX=pdf-tools:

# 邮件配置（可选）
SMTP_HOST=
SMTP_PORT=587
SMTP_USER=
SMTP_PASS=

# 系统配置
ENABLE_ANALYTICS=false
ENABLE_RATE_LIMITING=true
RATE_LIMIT_WINDOW=900000
RATE_LIMIT_MAX=100