app/services/matching_service.py

from rapidfuzz import fuzz

def fuzzy_match(target: str, text: str) -> float:
    return fuzz.partial_ratio(target, text)

def check_presence(transcript: str, name: str, dob: str, gotra: str):
    # Name uses substring matching
    name_present = name in transcript
    
    # DOB and Gotra use fuzzy matching
    dob_score = fuzzy_match(dob, transcript)
    gotra_score = fuzzy_match(gotra, transcript)
    
    result = {
        "name_present": name_present,
        "dob_present": dob_score > 80,
        "gotra_present": gotra_score > 80,
        "confidence_scores": {
            "name": 100 if name_present else 0,
            "dob": dob_score,
            "gotra": gotra_score
        }
    }

    return result