7f325b5c32
- Added FastAPI router for serving email management UI at /emails - Created Jinja2 template for the email frontend - Developed SimpleEmailClassifier for keyword-based email classification - Documented email UI implementation details, features, and API integration in EMAIL_UI_IMPLEMENTATION.md
110 lines
3.8 KiB
Python
110 lines
3.8 KiB
Python
"""
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Simple Keyword-Based Email Classifier
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Fallback when AI classification is unavailable
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"""
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import logging
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from typing import Dict, Optional
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import re
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logger = logging.getLogger(__name__)
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class SimpleEmailClassifier:
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"""Simple rule-based email classifier using keywords"""
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def __init__(self):
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self.keyword_rules = {
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'invoice': [
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'faktura', 'invoice', 'kreditnota', 'credit note',
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'ordrenr', 'order number', 'betalingspåmindelse', 'payment reminder',
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'fakturanr', 'invoice number', 'betaling', 'payment'
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],
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'freight_note': [
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'fragtbrev', 'tracking', 'forsendelse', 'shipment',
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'levering', 'delivery', 'pakke', 'package', 'fragtbreve'
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],
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'order_confirmation': [
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'ordrebekræftelse', 'order confirmation', 'bestilling bekræftet',
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'ordre modtaget', 'order received'
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],
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'time_confirmation': [
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'timer', 'hours', 'tidsforbrug', 'time spent',
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'tidsregistrering', 'time registration'
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],
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'case_notification': [
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'cc[0-9]{4}', 'case #', 'sag ', 'ticket', 'support'
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],
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'bankruptcy': [
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'konkurs', 'bankruptcy', 'rekonstruktion', 'insolvency',
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'betalingsstandsning', 'administration'
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],
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'spam': [
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'unsubscribe', 'click here', 'free offer', 'gratis tilbud',
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'vind nu', 'win now', 'limited time'
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]
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}
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def classify(self, email_data: Dict) -> Dict:
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"""
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Classify email using simple keyword matching
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Returns: {classification: str, confidence: float, reasoning: str}
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"""
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subject = (email_data.get('subject', '') or '').lower()
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sender = (email_data.get('sender_email', '') or '').lower()
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body = (email_data.get('body_text', '') or '').lower()[:500] # First 500 chars
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logger.info(f"🔍 simple_classifier: subject='{subject}', body_len={len(body)}, sender='{sender}'")
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# Combine all text for analysis
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text = f"{subject} {body}"
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# Check each category
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scores = {}
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for category, keywords in self.keyword_rules.items():
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matches = 0
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matched_keywords = []
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for keyword in keywords:
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# Use regex for patterns like CC[0-9]{4}
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if re.search(keyword, text, re.IGNORECASE):
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matches += 1
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matched_keywords.append(keyword)
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if matches > 0:
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scores[category] = {
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'matches': matches,
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'keywords': matched_keywords
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}
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# Determine best match
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if not scores:
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return {
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'classification': 'general',
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'confidence': 0.5,
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'reasoning': 'No specific keywords matched - classified as general'
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}
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# Get category with most matches
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best_category = max(scores.items(), key=lambda x: x[1]['matches'])
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category_name = best_category[0]
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match_count = best_category[1]['matches']
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matched_keywords = best_category[1]['keywords']
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# Calculate confidence (0.6-0.9 based on matches)
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confidence = min(0.9, 0.6 + (match_count * 0.1))
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reasoning = f"Matched {match_count} keyword(s): {', '.join(matched_keywords[:3])}"
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logger.info(f"✅ Keyword classification: {category_name} (confidence: {confidence:.2f})")
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return {
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'classification': category_name,
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'confidence': confidence,
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'reasoning': reasoning
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}
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# Global instance
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simple_classifier = SimpleEmailClassifier()
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