#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    # Define upstream servers
    upstream eveai_chat_client {
        server eveai_chat_client:5004;
    }

    log_format custom_log_format '$remote_addr - $remote_user [$time_local] "$request" '
                                  '$status $body_bytes_sent "$http_referer" '
                                  '"$http_user_agent" "$http_x_forwarded_for" '
                                  'rt=$request_time ut=$upstream_response_time';

    access_log /var/log/nginx/access.log custom_log_format;
    error_log /var/log/nginx/error.log info;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    client_max_body_size 50M;

    #gzip  on;

    client_header_buffer_size 4k;
    large_client_header_buffers 4 8k;

    server {
        listen       80;
        listen       8080;
        server_name  ${NGINX_SERVER_NAME};

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location = / {
            return 301 /admin/;
        }

        location / {
            root   /etc/nginx/public;
            index  index.html index.htm;
        }

        location /reset {
           rewrite ^/reset(.*)$ /admin/reset$1 permanent;
        }

        location /static/ {
            alias  /etc/nginx/static/;
        }

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   /etc/nginx/public;
        }

#         location /chat/ {
#             proxy_pass http://eveai_chat:5002/;
#
#             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_http_version 1.1;
#             proxy_set_header Upgrade $http_upgrade;
#             proxy_set_header Connection "upgrade";
#             proxy_buffering off;
#
#             # Add CORS headers
#             add_header 'Access-Control-Allow-Origin' '*' always;
#             add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
#             add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization' always;
#             add_header 'Access-Control-Allow-Credentials' 'true' always;
#         }

        location /chat-client/ {
            proxy_pass http://eveai_chat_client/;

            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 X-Forwarded-Prefix /chat-client;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_buffering off;

            # Add CORS headers
            add_header 'Access-Control-Allow-Origin' '*' always;
            add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
            add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization' always;
            add_header 'Access-Control-Allow-Credentials' 'true' always;
        }

        location /admin/ {
#             include uwsgi_params;
#             uwsgi_pass 127.0.0.1:5001;
#             uwsgi_read_timeout 300;
            proxy_pass http://eveai_app:5001/;
            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 X-Forwarded-Prefix /admin;     # Required for Flask views (used in nginx_utils
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_buffering off;
            proxy_buffer_size 16k;
            proxy_buffers 4 32k;
            proxy_busy_buffers_size 64k;

#             # Ensure these headers are set for secure connections
#             proxy_set_header X-Forwarded-Proto $scheme;
#             proxy_set_header X-Forwarded-Host $host;
#             proxy_set_header X-Forwarded-Port $server_port;

            proxy_connect_timeout 60s;
            proxy_send_timeout 60s;
            proxy_read_timeout 60s;
            send_timeout 60s;

            # Subfilter to hide admin prefix from app
            sub_filter_once off;
            sub_filter_types text/html text/css application/javascript;

            # General HTML sub_filters
            sub_filter 'href="/static/' 'href="/static/';
            sub_filter 'src="/static/' 'src="/static/';
            sub_filter 'url("/static/' 'url("/static/';
            sub_filter 'href="/' 'href="/admin/';  # Rewrites for other content
            sub_filter 'src="/' 'src="/admin/';
            sub_filter 'action="/' 'action="/admin/';
            sub_filter 'url("/' 'url("/admin/';

            # Sub_filters for JavaScript URLs
            sub_filter 'url: "/' 'url: "/admin/';
            sub_filter 'url: \"/' 'url: "/admin/';
            sub_filter 'url("/' 'url("/admin/';
            sub_filter 'url(\\"/' 'url("/admin/';

            # Sub_filters for AJAX requests
            sub_filter 'url: \'/user/' 'url: \'/admin/user/';
            sub_filter 'url: "/user/' 'url: "/admin/user/';
            sub_filter 'url: "/api/' 'url: "/admin/api/';
            sub_filter 'url: \'/api/' 'url: \'/admin/api/';

        }

        location /api/ {
            # Handle preflight requests
            if ($request_method = 'OPTIONS') {
                add_header 'Access-Control-Allow-Origin' $http_origin always;
                add_header 'Access-Control-Allow-Credentials' 'true' always;
                add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
                add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
                add_header 'Access-Control-Max-Age' 1728000;
                add_header 'Content-Type' 'text/plain charset=UTF-8';
                add_header 'Content-Length' 0;
                return 204;
            }
            # Mirror the Origin header if it's allowed by the application
            # The application will handle the actual origin validation
            add_header 'Access-Control-Allow-Origin' $http_origin always;
            add_header 'Access-Control-Allow-Credentials' 'true' always;
            add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
            add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
            add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;

            proxy_pass http://eveai_api:5003/;
            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 X-Forwarded-Prefix /api;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_buffering off;
            proxy_buffer_size 16k;
            proxy_buffers 4 32k;
            proxy_busy_buffers_size 64k;

            proxy_connect_timeout 60s;
            proxy_send_timeout 60s;
            proxy_read_timeout 60s;
            send_timeout 60s;
        }

        location /flower/ {
            proxy_pass http://flower:5555/flower/;
            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;
        }
    }

    include sites-enabled/*;
}