chore: update .env.example for topic classification

Author: atrifat

.env.example

@@ -4,24 +4,36 @@ NODE_ENV=production
 ENABLE_NSFW_CLASSIFICATION=true
 NSFW_DETECTOR_ENDPOINT=http://localhost:8082/predict
 NSFW_DETECTOR_TOKEN=
+
 ENABLE_LANGUAGE_DETECTION=true
 LANGUAGE_DETECTOR_ENDPOINT=http://localhost:5000/detect
 LANGUAGE_DETECTOR_TOKEN=
 LANGUAGE_DETECTOR_TRUNCATE_LENGTH=350
+
 ENABLE_HATE_SPEECH_DETECTION=true
 # (Required if ENABLE_HATE_SPEECH_DETECTION == true) set this to your own hate-speech-detector-api instance (https://github.com/atrifat/hate-speech-detector-api)
 HATE_SPEECH_DETECTOR_ENDPOINT=http://localhost:8083/predict
-# (Optional) set this to your own hate-speech-detector-api api_key if required 
+# (Optional) set this to your own hate-speech-detector-api api_key if required
 HATE_SPEECH_DETECTOR_TOKEN=
 # (Default: 350) Set to 0 if you don't want to truncate text, or set to any positive number to truncate the text characters
 HATE_SPEECH_DETECTOR_TRUNCATE_LENGTH=350
+
 ENABLE_SENTIMENT_ANALYSIS=true
 # (Required if ENABLE_SENTIMENT_ANALYSIS == true) set this to your own sentiment-analysis-api instance (https://github.com/atrifat/sentiment-analysis-api)
 SENTIMENT_ANALYSIS_ENDPOINT=http://localhost:8084/predict
-# (Optional) set this to your own sentiment-analysis-api api_key if required 
+# (Optional) set this to your own sentiment-analysis-api api_key if required
 SENTIMENT_ANALYSIS_TOKEN=
 # (Default: 350) Set to 0 if you don't want to truncate text, or set to any positive number to truncate the text characters
 SENTIMENT_ANALYSIS_TRUNCATE_LENGTH=350
+
+ENABLE_TOPIC_CLASSIFICATION=true
+# (Required if ENABLE_TOPIC_CLASSIFICATION == true) set this to your own topic-classification-api instance (https://github.com/atrifat/topic-classification-api)
+TOPIC_CLASSIFICATION_ENDPOINT=http://localhost:8085/predict
+# (Optional) set this to your own topic-classification-api api_key if required
+TOPIC_CLASSIFICATION_TOKEN=
+# (Default: 350) Set to 0 if you don't want to truncate text, or set to any positive number to truncate the text characters
+TOPIC_CLASSIFICATION_TRUNCATE_LENGTH=350
+
 # (Required for classification filtering)
 NOSTR_MONITORING_BOT_PRIVATE_KEY=
 RELAYS_SOURCE=wss://relay.nostr.band,wss://relay.damus.io,wss://nos.lol,wss://relay.mostr.pub
@@ -40,23 +52,33 @@ WHITELISTED_PUBKEYS=
 LISTEN_PORT=7860
 # (Optional) Set true to enable forwarding of request headers to upstream server, useful if relays behind reverse proxy
 ENABLE_FORWARD_REQ_HEADERS=false
+
 # (Optional. Default: sfw. Options: all, sfw, partialsfw, and nsfw) Filter hate speech (toxic comment).
 DEFAULT_FILTER_CONTENT_MODE=sfw
 # (Optional. Default: 75, Options: 0-100) Default minimum probability/confidence score to determine the classification of nsfw content
 DEFAULT_FILTER_NSFW_CONFIDENCE=75
+
 # (Optional. Default: all. Multiple Options: all, or other language code)
 DEFAULT_FILTER_LANGUAGE_MODE=all
 # (Optional. Default: 15. Options: 0-100) Default minimum probability/confidence score to determine the classification of language
 DEFAULT_FILTER_LANGUAGE_CONFIDENCE=15
+
 # (Optional. Default: no. Options: all, no, yes) Filter hate speech (toxic comment). "all" will disable filtering, "no" will filter out any detected hate speech content, "yes" will select only detected hate speech content
 DEFAULT_FILTER_HATE_SPEECH_TOXIC_MODE=no
 # (Optional. Default: 75. Options: 0-100) Default minimum probability/confidence score to determine the classification of hate speech (toxic comment)
 DEFAULT_FILTER_HATE_SPEECH_TOXIC_CONFIDENCE=75
 # (Optional. Default: max. Options: max, sum) Methods to determine toxic content by using max value from all toxic classes score or sum value of all toxic classes score
 DEFAULT_FILTER_HATE_SPEECH_TOXIC_EVALUATION_MODE=max
+
 # (Optional. Default: all, Multiple Options: all,negative,neutral,positive) Multiple options separated by comma (eg: neutral,positive => filter to get both neutral and positive sentiment)
 DEFAULT_FILTER_SENTIMENT_MODE=all
 # (Optional. Default: 35, Options: 0-100) Default minimum probability/confidence score in percentage to determine the classification of sentiment
 DEFAULT_FILTER_SENTIMENT_CONFIDENCE=35
+
+# (Default: all, Multiple Options: list of valid topic in atrifat/nostr-filter-relay Github) Multiple options separated by comma (eg: life,music,sport,science_and_technology => filter to get life (short version of: diaries_and_life), music, sport, science_and_technology)
+DEFAULT_FILTER_TOPIC_MODE=all
+# (Default: 35, Options: 0-100) Default minimum probability/confidence score in percentage to determine the classification of topic
+DEFAULT_FILTER_TOPIC_CONFIDENCE=35
+
 # (Optional. Default: all. Options: all, nostr, activitypub) Filter user type. "nostr" for native nostr users and "activitypub" for activitypub users coming from bridge
-DEFAULT_FILTER_USER_MODE=all
+DEFAULT_FILTER_USER_MODE=all