server {
    listen 80;
    listen [::]:80;
    server_name approval.justconn.top;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name approval.justconn.top;

    ssl_certificate /etc/letsencrypt/live/approval.justconn.top/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/approval.justconn.top/privkey.pem;
    include /etc/letsencrypt/options-ssl-nginx.conf;
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;

    client_max_body_size 1m;
    add_header Strict-Transport-Security "max-age=31536000" always;

    location = /downloads/dingmcp/install.md {
        alias /var/www/approval.justconn.top/downloads/dingmcp/install.md;
        default_type text/markdown;
        charset utf-8;
        charset_types text/markdown;
        add_header Strict-Transport-Security "max-age=31536000" always;
        add_header Cache-Control "no-cache" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header Content-Security-Policy "default-src 'none'" always;
    }

    location = /downloads/dingmcp/compat-install.md {
        alias /var/www/approval.justconn.top/downloads/dingmcp/compat-install.md;
        default_type text/markdown;
        charset utf-8;
        charset_types text/markdown;
        add_header Strict-Transport-Security "max-age=31536000" always;
        add_header Cache-Control "no-cache" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header Content-Security-Policy "default-src 'none'" always;
    }

    location = /downloads/dingmcp/manifest.json {
        alias /var/www/approval.justconn.top/downloads/dingmcp/manifest.json;
        default_type application/json;
        add_header Strict-Transport-Security "max-age=31536000" always;
        add_header Cache-Control "no-cache" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header Content-Security-Policy "default-src 'none'" always;
    }

    location = /downloads/dingmcp/manifest.sig {
        root /var/www/approval.justconn.top;
        default_type application/json;
        add_header Strict-Transport-Security "max-age=31536000" always;
        add_header Cache-Control "no-cache" always;
        add_header X-Content-Type-Options "nosniff" always;
    }

    location = /downloads/dingmcp/agent-test-install.md {
        root /var/www/approval.justconn.top;
        default_type text/markdown;
        charset utf-8;
        charset_types text/markdown;
        add_header Strict-Transport-Security "max-age=31536000" always;
        add_header Cache-Control "no-cache" always;
        add_header X-Content-Type-Options "nosniff" always;
    }

    location ~ ^/downloads/dingmcp/(?:dingtalk-approval-installer\.mjs|dingtalk-approval-bootstrap\.(?:ps1|sh)|dingtalk-approval-SKILL\.md|release-signing-public\.pem|SHA256SUMS|dingmcp-test-bundle\.tar\.gz)$ {
        root /var/www/approval.justconn.top;
        add_header Strict-Transport-Security "max-age=31536000" always;
        add_header Cache-Control "no-cache" always;
        add_header X-Content-Type-Options "nosniff" always;
    }

    location /downloads/dingmcp/ {
        alias /var/www/approval.justconn.top/downloads/dingmcp/;
        autoindex off;
        add_header Strict-Transport-Security "max-age=31536000" always;
        add_header Cache-Control "public, max-age=31536000, immutable" always;
        add_header X-Content-Type-Options "nosniff" always;
    }

    location / {
        proxy_pass http://127.0.0.1:3010;
        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-Proto https;
        proxy_set_header Authorization $http_authorization;
        proxy_set_header Mcp-Session-Id $http_mcp_session_id;
        proxy_buffering off;
        proxy_cache off;
        # MCP sessions have a hard 24-hour lifetime in the gateway. Keep the
        # reverse proxy from expiring a healthy, otherwise idle stream first.
        proxy_read_timeout 25h;

        add_header Strict-Transport-Security "max-age=31536000" always;
        add_header Cache-Control "no-store" always;
        add_header Pragma "no-cache" always;
        add_header X-Content-Type-Options "nosniff" always;
    }
}