user  nginx;
worker_processes  auto;

error_log  /var/log/nginx/error.log notice;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                       '$status $body_bytes_sent "$http_referer" '
                       '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile        on;
    keepalive_timeout  65;

    # 域名/IP 未确定前，先用 _ 通配 server_name
    server {
        listen 443 ssl;
        server_name _;

        ssl_certificate     /etc/nginx/certs/fullchain.pem;
        ssl_certificate_key /etc/nginx/certs/privkey.pem;

        location / {
            proxy_pass http://lobe-chat:3210;
            proxy_http_version 1.1;
            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（Infinity Chat 可能使用 WebSocket）
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";

            # 关闭缓冲/缓存以支持流式输出
            proxy_buffering off;
            proxy_cache off;
            proxy_read_timeout 300s;
        }
    }

    # 未映射 80 端口（NAS 本机 80 已被其他服务占用，见 docker-compose.yml 注释）
    # 公网仅通过甲骨文 frp 隧道转发 443 → 本机 8443，暂不做 HTTP→HTTPS 跳转
}