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| import os | |
| import re | |
| import streamlit as st | |
| import google.generativeai as genai | |
| from transformers import pipeline, AutoModelForSequenceClassification, AutoTokenizer | |
| from db import get_entry_by_index | |
| # Configure Gemini API key | |
| GEMINI_API_KEY = os.getenv("gemini_api") | |
| if GEMINI_API_KEY: | |
| genai.configure(api_key=GEMINI_API_KEY) | |
| else: | |
| st.error("⚠️ Google API key is missing! Set it in Hugging Face Secrets.") | |
| # Load pre-trained sentiment analysis model | |
| MODEL_NAME = "cardiffnlp/twitter-roberta-base-sentiment" | |
| try: | |
| tokenizer = AutoTokenizer.from_pretrained(MODEL_NAME) | |
| model = AutoModelForSequenceClassification.from_pretrained(MODEL_NAME) | |
| sentiment_pipeline = pipeline("sentiment-analysis", model=model, tokenizer=tokenizer) | |
| except Exception as e: | |
| st.error(f"❌ Error loading sentiment model: {e}") | |
| # Load Topic Extraction Model | |
| try: | |
| topic_pipeline = pipeline("zero-shot-classification", model="facebook/bart-large-mnli") | |
| except Exception as e: | |
| st.error(f"❌ Error loading topic extraction model: {e}") | |
| # Predefined topic labels for classification | |
| TOPIC_LABELS = [ | |
| "Technology", "Politics", "Business", "Sports", "Entertainment", | |
| "Health", "Science", "Education", "Finance", "Travel", "Food" | |
| ] | |
| def analyze_sentiment(text): | |
| try: | |
| result = sentiment_pipeline(text)[0] | |
| label = result['label'] | |
| score = result['score'] | |
| sentiment_mapping = { | |
| "LABEL_0": "Negative", | |
| "LABEL_1": "Neutral", | |
| "LABEL_2": "Positive" | |
| } | |
| return sentiment_mapping.get(label, "Unknown"), score | |
| except Exception as e: | |
| return f"Error analyzing sentiment: {e}", None | |
| def extract_topic(text): | |
| try: | |
| result = topic_pipeline(text, TOPIC_LABELS) | |
| top_topic = result["labels"][0] | |
| confidence = result["scores"][0] | |
| return top_topic, confidence | |
| except Exception as e: | |
| return f"Error extracting topic: {e}", None | |
| # Helper function to parse a data entry index from the user's prompt. | |
| # It looks for a pattern like "data entry 1" or "entry 1" (case insensitive). | |
| def parse_entry_index(prompt): | |
| match = re.search(r'(?:data\s+entry|entry)\s+(\d+)', prompt, re.IGNORECASE) | |
| if match: | |
| try: | |
| # Convert to zero-based index. | |
| return int(match.group(1)) - 1 | |
| except ValueError: | |
| return None | |
| return None | |
| def chatbot_response(user_prompt): | |
| if not user_prompt: | |
| return None, None, None, None, None | |
| try: | |
| # Check if the prompt contains a specific data entry request. | |
| index = parse_entry_index(user_prompt) | |
| if index is not None: | |
| # Fetch the specified entry from MongoDB. | |
| entry = get_entry_by_index(index) | |
| if entry is None: | |
| return f"❌ No entry found for data entry {index+1}.", None, None, None, None | |
| entry_text = entry.get("text", "No text available.") | |
| # Construct a simple generative prompt. | |
| combined_prompt = f"Let's break down this tweet-like MongoDB entry:\n{entry_text}" | |
| # Analyze sentiment and topic on the entry's text. | |
| sentiment_label, sentiment_confidence = analyze_sentiment(entry_text) | |
| topic_label, topic_confidence = extract_topic(entry_text) | |
| else: | |
| # For any other prompt, use it as is. | |
| combined_prompt = user_prompt | |
| sentiment_label, sentiment_confidence = analyze_sentiment(user_prompt) | |
| topic_label, topic_confidence = extract_topic(user_prompt) | |
| # Generate AI response using Gemini with the constructed prompt. | |
| model_gen = genai.GenerativeModel("gemini-1.5-pro") | |
| ai_response = model_gen.generate_content(combined_prompt) | |
| # Return the generative response and the separately computed sentiment and category. | |
| return ai_response.text, sentiment_label, sentiment_confidence, topic_label, topic_confidence | |
| except Exception as e: | |
| return f"❌ Error: {e}", None, None, None, None | |