server {
    listen 80;
    listen 443 ssl;
    server_name localhost;

    # SSL证书配置
    ssl_certificate /etc/nginx/ssl/fullchain.pem;
    ssl_certificate_key /etc/nginx/ssl/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;
    ssl_prefer_server_ciphers on;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 10m;

    # 日志配置
    access_log /var/log/nginx/access.log;
    error_log /var/log/nginx/error.log;

    # 设置较大的客户端请求体大小限制，以支持上传文件
    client_max_body_size 20M;

    # 设置超时时间
    proxy_connect_timeout 300s;
    proxy_send_timeout 300s;
    proxy_read_timeout 300s;

    # 启用gzip压缩
    gzip on;
    gzip_disable "msie6";
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_buffers 16 8k;
    gzip_http_version 1.1;
    gzip_min_length 256;
    gzip_types
        application/javascript
        application/json
        application/x-javascript
        application/xml
        application/xml+rss
        image/svg+xml
        text/css
        text/javascript
        text/plain
        text/xml;

    # 反向代理到应用服务
    location / {
        proxy_pass http://app:8888;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;

        # WebSocket支持
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";

        # 安全相关头信息
        add_header X-Content-Type-Options nosniff;
        add_header X-XSS-Protection "1; mode=block";
        add_header X-Frame-Options SAMEORIGIN;
        add_header Referrer-Policy strict-origin-when-cross-origin;
        add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
    }

    # API请求处理
    location /api/ {
        proxy_pass http://app:8888;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        
        # WebSocket支持
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        
        # 流式输出支持
        proxy_buffering off;           # 禁用代理缓冲
        proxy_cache off;               # 禁用代理缓存
        chunked_transfer_encoding on;  # 启用分块传输编码
        tcp_nopush off;                # 禁用TCP NOPUSH选项，确保数据立即发送
        tcp_nodelay on;                # 启用TCP NODELAY选项，禁用Nagle算法
        keepalive_timeout 65;          # 保持连接超时
        
        # 确保不会压缩流式响应
        gzip off;                      # 对API响应禁用gzip压缩
    }

    # 静态文件缓存设置
    location ~* \.(jpg|jpeg|png|gif|ico|css|js)$ {
        proxy_pass http://app:8888;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        expires 30d;
        add_header Cache-Control "public, max-age=2592000";
        add_header X-Content-Type-Options nosniff;
    }
}