events{}
http {
    include /etc/nginx/mime.types;
    client_max_body_size 100m;

    server_tokens off;

    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" always;
    add_header X-Content-Type-Options "nosniff" always;

    server {
        listen 80;
        server_name localhost;
        root /usr/share/nginx/html;
        index index.html;

        error_page 404 /404.html;
        location = /404.html {
            root /usr/share/nginx/html;
            try_files $uri $uri/ /index.html;
        }

        location /socket.io {
            proxy_pass http://localhost:3000/socket.io;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "Upgrade";
            proxy_set_header Host $host;
            proxy_read_timeout 900s;
            proxy_send_timeout 900s;
        }

        location ~* ^/(?!api/).*.(css|js|jpg|jpeg|png|gif|ico|svg)$ {
            root /usr/share/nginx/html;
            add_header Expires "0";
            add_header Cache-Control "public, max-age=31536000, immutable";
        }

        # Use the default language for the root of the application
        location / {
           root /usr/share/nginx/html;
           try_files $uri $uri/ /index.html?$args;
        }

        location /api/ {
            proxy_pass http://localhost:3000/;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "Upgrade";
            proxy_set_header Host $host;
            proxy_read_timeout 900s;
            proxy_send_timeout 900s;

            # SSE specific settings
            proxy_buffering off;
            proxy_cache off;
        }
    }
}