utils/face_match.py

import face_recognition
import numpy as np

def compare_faces(reference_img, selfie_img):
    try:
        ref_encoding = face_recognition.face_encodings(reference_img)[0]
        self_encoding = face_recognition.face_encodings(selfie_img)[0]
        distance = np.linalg.norm(ref_encoding - self_encoding)
        score = max(0, 100 - distance * 100)  # scale to 0–100
        return score
    except IndexError:
        return 0  # No face found