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

    # WebSocket 连接升级映射
    map $http_upgrade $connection_upgrade {
        default upgrade;
        '' close;
    }

    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;
    client_max_body_size 20M;

    # Gzip 压缩
    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_types text/plain text/css text/xml text/javascript 
               application/json application/javascript application/xml+rss 
               application/rss+xml font/truetype font/opentype 
               application/vnd.ms-fontobject image/svg+xml;

    # 上游 API 服务器 - AIMeetingRoom API
    upstream api_backend {
        server aimetingroom-api:8000;
    }

    # 上游 API 服务器 - Lifecho API
    # 根据 docker-compose.yml：
    #   - 服务名：api
    #   - 容器名：life-echo-api-prod
    #   - 网络名：life-echo-network
    #   - 端口映射：8000:8000
    upstream lifecho_api_backend {
        # nginx 已连接到 api_life-echo-network 网络
        # 使用服务名 'api' 进行服务发现（推荐）
        server api:8000;
        
        # 备选方案：如果服务名不工作，可以使用容器名
        # server life-echo-api-prod:8000;
    }

    # HTTP 服务器配置 - 重定向到 HTTPS
    server {
        listen 80;
        server_name meeting.worldsplats.com lifecho.worldsplats.com;

        # 将所有 HTTP 请求重定向到 HTTPS
        return 301 https://$host$request_uri;
    }

    # HTTPS 服务器配置 - meeting.worldsplats.com
    server {
        listen 443 ssl http2;
        server_name meeting.worldsplats.com;

        # SSL 证书配置
        ssl_certificate /etc/nginx/ssl/meeting.worldsplats.com.crt;
        ssl_certificate_key /etc/nginx/ssl/meeting.worldsplats.com.key;

        # SSL 协议和加密套件配置
        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:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384';
        ssl_prefer_server_ciphers off;
        ssl_session_cache shared:SSL:10m;
        ssl_session_timeout 10m;
        ssl_session_tickets off;

        # 安全头
        add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
        add_header X-Frame-Options "SAMEORIGIN" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header X-XSS-Protection "1; mode=block" always;
        add_header Referrer-Policy "no-referrer-when-downgrade" always;

        # AIMeetingRoom API 代理
        location /api/ {
            proxy_pass http://api_backend;
            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（如果需要）
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            
            # 超时设置
            proxy_connect_timeout 60s;
            proxy_send_timeout 60s;
            proxy_read_timeout 60s;
        }

        # Lifecho API 代理（支持 WebSocket）
        location /lifecho-api/ {
            proxy_pass http://lifecho_api_backend/;
            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（ws/wss）
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
            
            # 禁用缓冲以确保 WebSocket 实时通信
            proxy_buffering off;
            proxy_cache off;
            
            # WebSocket 超时设置（长时间保持连接）
            proxy_connect_timeout 7d;
            proxy_send_timeout 7d;
            proxy_read_timeout 7d;
        }

        # 健康检查 - AIMeetingRoom API
        location /health {
            proxy_pass http://api_backend/api/health;
            access_log off;
        }

        # 健康检查 - Lifecho API
        location /lifecho-health {
            proxy_pass http://lifecho_api_backend/health;
            access_log off;
        }

        # 根路径
        location / {
            return 200 'AIMeetingRoom API Gateway';
            add_header Content-Type text/plain;
        }
    }

    # HTTPS 服务器配置 - lifecho.worldsplats.com
    server {
        listen 443 ssl http2;
        server_name lifecho.worldsplats.com;

        # SSL 证书配置
        ssl_certificate /etc/nginx/ssl/lifecho.worldsplats.com.crt;
        ssl_certificate_key /etc/nginx/ssl/lifecho.worldsplats.com.key;

        # SSL 协议和加密套件配置
        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:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384';
        ssl_prefer_server_ciphers off;
        ssl_session_cache shared:SSL:10m;
        ssl_session_timeout 10m;
        ssl_session_tickets off;

        # 安全头
        add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
        add_header X-Frame-Options "SAMEORIGIN" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header X-XSS-Protection "1; mode=block" always;
        add_header Referrer-Policy "no-referrer-when-downgrade" always;

        # Lifecho API 代理（支持 WebSocket）
        location / {
            proxy_pass http://lifecho_api_backend/;
            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（ws/wss）
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
            
            # 禁用缓冲以确保 WebSocket 实时通信
            proxy_buffering off;
            proxy_cache off;
            
            # WebSocket 超时设置（长时间保持连接）
            proxy_connect_timeout 7d;
            proxy_send_timeout 7d;
            proxy_read_timeout 7d;
        }

        # 健康检查 - Lifecho API
        location /health {
            proxy_pass http://lifecho_api_backend/health;
            access_log off;
        }
    }
}