# Nginx 配置 —— shizhui.xyz 静态站点
# 放到服务器 /etc/nginx/sites-available/shizhui 并软链到 sites-enabled
# 证书由 certbot (DNS-01) 签发：/etc/letsencrypt/live/shizhui.xyz/

# HTTP：保留 ACME 验证路径，其余跳转 HTTPS
server {
    listen 80;
    listen [::]:80;
    server_name shizhui.xyz www.shizhui.xyz;

    # Let's Encrypt ACME 验证（webroot，备用）
    location ^~ /.well-known/acme-challenge/ {
        root /var/www/letsencrypt;
        default_type "text/plain";
        try_files $uri =404;
    }

    location / {
        return 301 https://$host$request_uri;
    }
}

# HTTPS 主站
server {
    listen 443 ssl;
    listen [::]:443 ssl;
    http2 on;
    server_name shizhui.xyz www.shizhui.xyz;

    ssl_certificate /etc/letsencrypt/live/shizhui.xyz/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/shizhui.xyz/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers off;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 1d;

    root /var/www/shizhui;
    index index.html;

    # 安全响应头
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    add_header Strict-Transport-Security "max-age=31536000" always;

    # gzip 压缩
    gzip on;
    gzip_types text/css application/javascript application/json image/svg+xml application/xml;
    gzip_min_length 1024;

    # 静态资源缓存（带 hash 的构建产物可长缓存）
    location /_astro/ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }

    # Astro 构建生成的是目录式路由（/blog/ -> /blog/index.html）
    location / {
        try_files $uri $uri/ $uri.html =404;
    }

    error_page 404 /404.html;
}