# Novalon 静态站点 Nginx 配置
# 用法：替换现有 nginx.conf，然后 nginx -t && nginx -s reload

server {
    listen 80;
    server_name novalon.cn www.novalon.cn;
    return 301 https://www.novalon.cn$request_uri;
}

server {
    listen 443 ssl http2;
    server_name novalon.cn www.novalon.cn;

    # SSL 证书配置
    ssl_certificate /etc/nginx/ssl/fullchain.pem;
    ssl_certificate_key /etc/nginx/ssl/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 10m;

    # 静态文件根目录
    root /var/www/novalon;
    index index.html;

    # Gzip 压缩
    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_min_length 256;
    gzip_types
        text/plain
        text/css
        text/xml
        text/javascript
        application/json
        application/javascript
        application/xml
        application/rss+xml
        image/svg+xml;

    # 安全头
    add_header X-DNS-Prefetch-Control "on" always;
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header Referrer-Policy "origin-when-cross-origin" always;
    add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;

    # 静态资源长期缓存（带内容哈希的文件）
    location /_next/static/ {
        expires 1y;
        add_header Cache-Control "public, max-age=31536000, immutable";
        # 安全头需要重新添加（location 块会覆盖 server 级别的 add_header）
        add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
        add_header X-Frame-Options "SAMEORIGIN" always;
        add_header X-Content-Type-Options "nosniff" always;
        try_files $uri =404;
    }

    # 字体文件缓存
    location /fonts/ {
        expires 1y;
        add_header Cache-Control "public, max-age=31536000, immutable";
        add_header Access-Control-Allow-Origin "*";
        add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
        try_files $uri =404;
    }

    # 图片文件缓存
    location ~* \.(svg|jpg|jpeg|png|gif|webp|avif|ico)$ {
        expires 1y;
        add_header Cache-Control "public, max-age=31536000, immutable";
        add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
        try_files $uri =404;
    }

    # Let's Encrypt ACME challenge
    location /.well-known/acme-challenge/ {
        root /var/www/certbot;
        try_files $uri =404;
    }

    # Next.js 静态导出的页面路由
    # /about -> /about.html 或 /about/index.html
    location / {
        try_files $uri $uri.html $uri/ /404.html;
    }

    # 自定义 404 页面
    error_page 404 /404.html;

    # 优化文件传输
    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
}