load_module modules/ngx_http_js_module.so;
load_module modules/ngx_http_zip_module.so;

worker_processes auto;
pid /tmp/nginx.pid;

events {
        worker_connections 768;
        multi_accept on;
}

http {
        client_body_temp_path /tmp/client_body 1 2;
        fastcgi_temp_path /tmp/fastcgi 1 2;
        proxy_temp_path /tmp/proxy;
        uwsgi_temp_path /tmp/uwsgi;
        scgi_temp_path /tmp/scgi;

        sendfile on;
        client_body_buffer_size 128k;
        client_max_body_size 0;
        client_header_buffer_size 1k;
        large_client_header_buffers 4 16k;
        send_timeout 600s;
        keepalive_timeout 600s;
        client_body_timeout 600s;
        tcp_nopush on;
        tcp_nodelay on;

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

        ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3; # Dropping SSLv3, ref: POODLE
        ssl_prefer_server_ciphers on;

        js_import /etc/nginx/js/decode.js;

        map $time_iso8601 $date {
            ~([^+]+)T $1;
        }
        map $time_iso8601 $time {
            ~T([0-9:]+)\+ $1;
        }

        #INFO:	  [nginx][2023-11-14 09:20:29]	127.0.0.1 - -"GET / HTTP/1.1" 500 177 "-" "Mozilla/5.0 (X11; Linux x86_64)"rt=0.000 uct="-" uht="-" urt="-"
        log_format romm_log 'INFO:	  [nginx][$date $time]	$remote_addr - $remote_user '
                                        '"$request" $status $body_bytes_sent '
                                        '"$http_referer" "$http_user_agent" '
                                        'rt=$request_time uct="$upstream_connect_time" uht="$upstream_header_time" urt="$upstream_response_time"';

        access_log /dev/stdout romm_log;
        error_log /dev/stderr;

        gzip on;
        gzip_proxied any;
        gzip_vary on;
        gzip_comp_level 6;
        gzip_buffers 16 8k;
        gzip_min_length 1024;
        gzip_http_version 1.1;
        gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

        # include /etc/nginx/conf.d/*.conf;
        # include /etc/nginx/sites-enabled/*;

        upstream wsgi_server {
            server unix:/tmp/gunicorn.sock;
        }

        server {
            root /var/www/html;
            listen 8080;
            server_name localhost;

            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-Proto $scheme;

            location / {
                try_files $uri $uri/ /index.html;
                proxy_redirect off;
                add_header Access-Control-Allow-Origin *;
                add_header Access-Control-Allow-Methods *;
                add_header Access-Control-Allow-Headers *;
            }

            # Static files
            location /assets {
                try_files $uri $uri/ =404;
            }

            # OpenAPI for swagger and redoc
            location /openapi.json {
                proxy_pass http://wsgi_server;
            }

            # Backend api calls
            location /api {
                proxy_pass http://wsgi_server;
                proxy_request_buffering off;
                proxy_buffering off;
            }
            location /ws {
                proxy_pass http://wsgi_server;
                proxy_http_version 1.1;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection "upgrade";
            }

            # Internally redirect download requests
            location /library {
                internal;
                alias /romm/library;
            }

            # This location, and the related server at port 8081, are used to serve files when
            # using the `mod_zip` module. This is because the `mod_zip` module does not support
            # calculating CRC-32 values when using subrequests pointing directly to internal
            # locations that access the filesystem.
            # TODO: If that gets fixed, this workaround can be removed, and the `/library` location
            # can be used directly (also removing the server at port 8081).
            # Related issue: https://github.com/evanmiller/mod_zip/issues/90
            location /library-zip {
                internal;
                rewrite ^/library-zip/(.*)$ /library/$1 break;
                proxy_pass http://localhost:8081;
                # Proxy buffering must be disabled, for the module to correctly calculate CRC-32 values.
                proxy_buffering off;
            }

            # Internal decoding endpoint, used to decode base64 encoded data
            location /decode {
                internal;
                js_content decode.decodeBase64;
            }
        }

        server {
            listen 8081;
            server_name localhost;

            location /library {
                alias /romm/library;
            }
        }
}