user www-data;
worker_processes 1;

error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
    worker_connections 1024;
}

http {
    upstream backend {
        server app-server:9000;
        #server unix:/var/run/php/php7.4-fpm.sock;
    }

    # Set the `immutable` cache control options only for assets with a cache busting `v` argument
    map $arg_v $asset_immutable {
        "" "";
        default "immutable";
    }

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

    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
    '$status $body_bytes_sent "$http_referer" '
    '"$http_user_agent" "$http_x_forwarded_for"';

    access_log /var/log/nginx/access.log main;

    sendfile on;
    #tcp_nopush     on;

    keepalive_timeout 65;

    map $http_host $this_host {
        "" $host;
        default $http_host;
    }

    map $http_x_forwarded_proto $the_scheme {
        default $http_x_forwarded_proto;
        "" $scheme;
    }

    map $http_x_forwarded_host $the_host {
        default $http_x_forwarded_host;
        "" $this_host;
    }

    server {
        listen 80;
        # The below allows for being behind a reverse proxy and allowing the Nextcloud app to connect
        server_tokens off;

        # Add headers to serve security related headers
        add_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload;";
        # HTTP response headers borrowed from Nextcloud `.htaccess`
        add_header Referrer-Policy "no-referrer" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header X-Download-Options "noopen" always;
        add_header X-Frame-Options "SAMEORIGIN" always;
        add_header X-Permitted-Cross-Domain-Policies "none" always;
        add_header X-Robots-Tag "noindex, nofollow" always;
        add_header X-XSS-Protection "1; mode=block" always;

        # Remove X-Powered-By, which is an information leak
        fastcgi_hide_header X-Powered-By;

        root /var/www/html;
        client_max_body_size 10G; # 0=unlimited - set max upload size
        fastcgi_buffers 64 4K;
        client_body_buffer_size 512k;

        gzip off;

        index index.php index.html /index.php$request_uri;

        # Rule borrowed from `.htaccess` to handle Microsoft DAV clients
        location = / {
            if ( $http_user_agent ~ ^DavClnt ) {
                return 302 /remote.php/webdav/$is_args$args;
            }
        }

        location ^~ /.well-known {
            location = /.well-known/carddav {
                return 301 /remote.php/dav/;
            }
            location = /.well-known/caldav {
                return 301 /remote.php/dav/;
            }

            #location = /.well-known/webfinger { return 301 /index.php/.well-known/webfinger/; }
            #location = /.well-known/nodeinfo { return 301 /index.php/.well-known/nodeinfo/; }}

            location /.well-known/acme-challenge {
                try_files $uri $uri/ =404;
            }
            location /.well-known/pki-validation {
                try_files $uri $uri/ =404;
            }

            # Let Nextcloud's API for `/.well-known` URIs handle all other
            # requests by passing them to the front-end controller.
            return 301 /index.php$request_uri;
        }

        location = /robots.txt {
            allow all;
            log_not_found off;
            access_log off;
        }

        # Rules borrowed from `.htaccess` to hide certain paths from clients
        location ~ ^/(?:build|tests|config|lib|3rdparty|templates|data)(?:$|/) {
            return 404;
        }
        location ~ ^/(?:\.|autotest|occ|issue|indie|db_|console) {
            return 404;
        }

        location ~* ^/ds-vpath/ {
            rewrite /ds-vpath/(.*) /$1 break;
            proxy_pass http://onlyoffice-document-server;
            proxy_redirect off;

            client_max_body_size 10G;

            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";

            proxy_set_header Host $http_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-Host $the_host/ds-vpath;
            proxy_set_header X-Forwarded-Proto $the_scheme;
        }

        location ~ \.php(?:$|/) {
            # Required for legacy support
            rewrite ^/(?!index|remote|public|cron|core\/ajax\/update|status|ocs\/v[12]|updater\/.+|oc[ms]-provider\/.+|.+\/richdocumentscode\/proxy) /index.php$request_uri;

            fastcgi_split_path_info ^(.+?\.php)(/.*)$;
            set $path_info $fastcgi_path_info;

            try_files $fastcgi_script_name =404;

            include fastcgi_params;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            fastcgi_param PATH_INFO $fastcgi_path_info;
            fastcgi_param HTTPS off;

            fastcgi_param modHeadersAvailable true; #Avoid sending the security headers twice
            fastcgi_param front_controller_active true;
            fastcgi_pass backend;

            fastcgi_intercept_errors on;
            fastcgi_request_buffering off;

            fastcgi_max_temp_file_size 0;
        }

        location ~ \.(?:css|js|mjs|svg|gif|png|jpg|ico|wasm|tflite|map)$ {
            try_files $uri /index.php$request_uri;
            add_header Cache-Control "public, max-age=15778463, $asset_immutable";
            access_log off; # Optional: Don't log access to assets

            location ~ \.wasm$ {
                default_type application/wasm;
            }

            location ~ \.mjs$ {
                default_type text/javascript;
            }
        }


        location ~ \.woff2?$ {
            try_files $uri /index.php$request_uri;
            expires 7d; # Cache-Control policy borrowed from `.htaccess`
            access_log off; # Optional: Don't log access to assets
        }

        # Rule borrowed from `.htaccess`
        location /remote {
            return 301 /remote.php$request_uri;
        }

        location / {
            try_files $uri $uri/ /index.php$request_uri;
        }
    }
}