events {
    worker_connections 768;
}

http {

    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    server {

        listen 80;
        server_name _;
        root /usr/share/nginx/html;

        # ==========================================
        # APK DOWNLOAD
        # Serves the built APK for direct download,
        # e.g. http://<host>/app-release.apk
        # ==========================================

        location / {
            autoindex on;
            try_files $uri $uri/ =404;
        }

        location ~ \.apk$ {
            add_header Content-Disposition "attachment";
            default_type application/vnd.android.package-archive;
        }

        # ==========================================
        # BACKEND (handles /backend/ AND /<any-prefix>/backend/)
        # ==========================================

        location ~ ^/(?:[^/]+/)*backend/(.*)$ {

            proxy_pass http://127.0.0.1:9292/$1$is_args$args;

            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 $scheme;
            proxy_set_header Authorization $http_authorization;
        }
    }
}