upstream php {
    server unix:/tmp/heroku.fcgi;
}

server {
    listen 8080;
    root /app;
    index index.php index.html;

    # Block access to hidden files and directories
    location ~ /\. {
        deny all;
    }

    # Static files for root directory
    location / {
        try_files $uri $uri/ =404;

        # Expires headers for static assets
        location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot|bmp|webp|cur)$ {
            expires 1y;
            add_header Cache-Control "public, immutable";
        }

        # No cache for HTML
        location ~* \.(html)$ {
            expires 0;
            add_header Cache-Control "no-cache";
        }

        # No cache for data interchange
        location ~* \.(json|xml|jsonld|rdf|rss|atom|geojson|topojson|vtt|webmanifest|appcache)$ {
            expires 0;
            add_header Cache-Control "no-cache";
        }

        # No cache for PDFs
        location ~* \.(pdf)$ {
            expires 0;
            add_header Cache-Control "no-cache";
        }

        # 1 hour for web feeds
        location ~* \.(rss|atom)$ {
            expires 1h;
            add_header Cache-Control "public";
        }
    }

    # Static assets for pancake/third_party
    location /pancake/third_party {
        alias /app/pancake/third_party;
        expires 1y;
        add_header Cache-Control "public, immutable";

        # MIME types
        location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot|bmp|webp|cur|flv|mp4|ogv|webm|swf)$ {
            expires 1y;
            add_header Cache-Control "public, immutable";
        }
    }

    # PHP application for /pancake
    location /pancake {
        try_files $uri $uri/ /pancake/index.php?$query_string;
    }

    # Handle PHP files
    location ~ \.php$ {
        include fastcgi_params;
        fastcgi_pass php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param HTTPS off;
    }

    # Gzip compression
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript application/x-javascript application/atom+xml application/rss+xml application/ld+json application/manifest+json application/vnd.geo+json font/opentype image/svg+xml;

    # Security headers
    add_header X-Content-Type-Options nosniff;
    add_header X-UA-Compatible "IE=edge";

    # UTF-8 encoding
    charset utf-8;

    # MIME types
    types {
        application/atom+xml atom;
        application/json json map topojson;
        application/ld+json jsonld;
        application/rss+xml rss;
        application/vnd.geo+json geojson;
        application/xml rdf xml;
        application/javascript js;
        application/manifest+json webmanifest;
        application/x-web-app-manifest+json webapp;
        text/cache-manifest appcache;
        audio/mp4 f4a f4b m4a;
        audio/ogg oga ogg opus;
        image/bmp bmp;
        image/svg+xml svg svgz;
        image/webp webp;
        video/mp4 f4v f4p m4v mp4;
        video/ogg ogv;
        video/webm webm;
        video/x-flv flv;
        image/x-icon cur ico;
        application/font-woff woff;
        application/font-woff2 woff2;
        application/vnd.ms-fontobject eot;
        application/x-font-ttf ttc ttf;
        font/opentype otf;
        application/octet-stream safariextz;
        application/x-bb-appworld bbaw;
        application/x-chrome-extension crx;
        application/x-opera-extension oex;
        application/x-xpinstall xpi;
        text/vcard vcard vcf;
        text/vnd.rim.location.xloc xloc;
        text/vtt vtt;
        text/x-component htc;
    }

    # Error pages
    error_page 404 /404.html;
}