# Orbit HTTPS/WSS 入口示例。
# 将 orbit.example.com 和证书路径替换成正式值后，放到 Nginx 的 conf.d 目录。
# 本文件位于 http 配置上下文中；map/limit_req_zone 不能放进 server 块。

map $http_upgrade $orbit_connection_upgrade {
    default upgrade;
    ''      close;
}

limit_req_zone $binary_remote_addr zone=orbit_console_login:10m rate=10r/m;

upstream orbit_backend {
    server 127.0.0.1:8080;
    keepalive 64;
}

server {
    listen 80;
    listen [::]:80;
    server_name orbit.example.com;

    # ACME HTTP-01 或其他证书签发工具可使用此目录。
    location ^~ /.well-known/acme-challenge/ {
        root /var/www/orbit-acme;
        default_type text/plain;
    }

    location / {
        return 308 https://$host$request_uri;
    }
}

server {
    listen 443 ssl;
    listen [::]:443 ssl;
    http2 on;
    server_name orbit.example.com;

    ssl_certificate     /etc/letsencrypt/live/orbit.example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/orbit.example.com/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_session_cache shared:orbit_tls:10m;
    ssl_session_timeout 10m;
    ssl_session_tickets off;

    client_max_body_size 1m;
    proxy_connect_timeout 5s;
    proxy_send_timeout 60s;

    add_header Strict-Transport-Security "max-age=31536000" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header Referrer-Policy "no-referrer" always;

    # 长连接只用于 Worker 和结果订阅；心跳由协议负责，代理不能自行关闭空闲会话。
    location = /v1/worker/connect {
        proxy_pass http://orbit_backend;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $orbit_connection_upgrade;
        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-Host $host;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_read_timeout 1h;
        proxy_buffering off;
    }

    location = /v1/events/connect {
        proxy_pass http://orbit_backend;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $orbit_connection_upgrade;
        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-Host $host;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_read_timeout 1h;
        proxy_buffering off;
    }

    # 控制台登录额外限制来源 IP 的尝试速率；业务任务速率仍由 Orbit 的持久化配额和授权决定。
    # Orbit 另有数据库持久化账号/IP 保护；配置 ORBIT_CONSOLE_TRUSTED_PROXIES 为此代理的实际地址。
    location = /console/auth/login {
        limit_req zone=orbit_console_login burst=5 nodelay;
        proxy_pass http://orbit_backend;
        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-Host $host;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_read_timeout 30s;
    }

    location = /health/live {
        access_log off;
        proxy_pass http://orbit_backend;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_read_timeout 5s;
    }

    location = /health/ready {
        access_log off;
        proxy_pass http://orbit_backend;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_read_timeout 5s;
    }

    location / {
        proxy_pass http://orbit_backend;
        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-Host $host;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_read_timeout 60s;
    }
}