user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
    worker_connections 1024;
    use epoll;
    multi_accept on;
}

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;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;

    # Gzip 压缩
    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_types text/plain text/css text/xml application/json application/javascript application/rss+xml application/atom+xml image/svg+xml;

    # 请求体大小限制（支持大文件上传）
    client_max_body_size 100m;

    # 请求头缓冲区
    client_header_buffer_size 128m;
    large_client_header_buffers 4 128m;

    # WebSocket 支持
    map $http_upgrade $connection_upgrade {
        default upgrade;
        '' close;
    }

    # SSL 通用配置
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384;
    ssl_prefer_server_ciphers off;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 1d;

    # HTTP 重定向到 HTTPS
    server {
        listen 80;
        server_name _;
        return 301 https://$host$request_uri;
    }

    # 默认处理：未匹配的域名或 IP 访问返回 444
    server {
        listen 443 ssl default_server;
        http2 on;
        server_name _;

        ssl_certificate /etc/nginx/ssl/offerpai.com.cn.crt;
        ssl_certificate_key /etc/nginx/ssl/offerpai.com.cn.key;

        return 444;
    }

    # OfferPie 前端
    # www.offerpai.com.cn → 10302
    server {
        listen 443 ssl;
        http2 on;
        server_name www.offerpai.com.cn;

        ssl_certificate /etc/nginx/ssl/offerpai.com.cn.crt;
        ssl_certificate_key /etc/nginx/ssl/offerpai.com.cn.key;

        location / {
            proxy_pass http://172.17.0.1:10302;
            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;

            proxy_connect_timeout 300s;
            proxy_send_timeout 300s;
            proxy_read_timeout 300s;
        }
    }

    # OfferPie Java 后端 API
    # api.offerpai.com.cn → 10202
    server {
        listen 443 ssl;
        http2 on;
        server_name api.offerpai.com.cn;

        ssl_certificate /etc/nginx/ssl/offerpai.com.cn.crt;
        ssl_certificate_key /etc/nginx/ssl/offerpai.com.cn.key;

        location / {
            proxy_pass http://172.17.0.1:10202;
            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;

            proxy_connect_timeout 300s;
            proxy_send_timeout 300s;
            proxy_read_timeout 300s;
        }
    }

    # OfferPie Python AI 服务
    # ai.offerpai.com.cn → 10502
    server {
        listen 443 ssl;
        http2 on;
        server_name ai.offerpai.com.cn;

        ssl_certificate /etc/nginx/ssl/offerpai.com.cn.crt;
        ssl_certificate_key /etc/nginx/ssl/offerpai.com.cn.key;

        location / {
            proxy_pass http://172.17.0.1:10502;
            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 + 流式输出支持
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;

            proxy_buffering off;
            proxy_cache off;

            proxy_connect_timeout 300s;
            proxy_send_timeout 300s;
            proxy_read_timeout 300s;
        }
    }
}