# Genex Admin Web - Nginx HTTPS 配置
# 域名: admin.gogenex.cn
# 后端: genex-admin-web (Next.js, 端口 3000)
#
# 此文件由 deploy.sh nginx install 自动部署到:
#   /etc/nginx/sites-available/admin.gogenex.cn
#
# SSL 证书由 Let's Encrypt (certbot) 自动申请和管理

# HTTP 重定向到 HTTPS
server {
    listen 80;
    listen [::]:80;
    server_name admin.gogenex.cn;

    # Let's Encrypt 验证目录
    location /.well-known/acme-challenge/ {
        root /var/www/certbot;
    }

    # 所有其他请求重定向到 HTTPS
    location / {
        return 301 https://$host$request_uri;
    }
}

# HTTPS 配置
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name admin.gogenex.cn;

    # SSL 证书 (Let's Encrypt)
    ssl_certificate /etc/letsencrypt/live/admin.gogenex.cn/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/admin.gogenex.cn/privkey.pem;

    # SSL 配置优化
    ssl_session_timeout 1d;
    ssl_session_cache shared:SSL:50m;
    ssl_session_tickets off;

    # 现代 TLS 协议与加密套件
    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;

    # HSTS (强制 HTTPS, 2年有效)
    add_header Strict-Transport-Security "max-age=63072000" always;

    # 日志
    access_log /var/log/nginx/admin.gogenex.cn.access.log;
    error_log /var/log/nginx/admin.gogenex.cn.error.log;

    # 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;

    # 安全响应头
    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 "strict-origin-when-cross-origin" always;

    # Next.js 静态资源 (长期缓存, 文件名含 hash)
    location /_next/static/ {
        proxy_pass http://127.0.0.1:3000;
        proxy_cache_valid 200 365d;
        add_header Cache-Control "public, max-age=31536000, immutable";
    }

    # 反向代理到 genex-admin-web (Next.js)
    location / {
        proxy_pass http://127.0.0.1:3000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header 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-Proto $scheme;
        proxy_cache_bypass $http_upgrade;

        # 超时配置
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
    }

    # 健康检查 (Nginx 层)
    location = /nginx-health {
        access_log off;
        return 200 '{"status":"ok","service":"genex-admin-nginx"}';
        add_header Content-Type application/json;
    }
}
