import os
from pathlib import Path

class Config:
    # Base directory
    BASE_DIR = Path(__file__).parent

    # Flask configuration
    SECRET_KEY = os.environ.get('SECRET_KEY') or 'your-secret-key-here'
    MAX_CONTENT_LENGTH = 16 * 1024 * 1024  # 16MB max file size

    # Directory configuration
    UPLOAD_FOLDER = BASE_DIR / 'static' / 'uploads'
    CLASSIFIED_FOLDER = BASE_DIR / 'static' / 'classified_results'
    ANNOTATIONS_FOLDER = BASE_DIR / 'static' / 'annotations'

    # Image processing configuration
    ALLOWED_EXTENSIONS = {'png', 'jpg', 'jpeg'}
    MIN_CONTOUR_AREA = 100
    DEFAULT_SIMILARITY_THRESHOLD = 0.85

    # Feature extraction configuration
    USE_ADVANCED_FEATURES = True
    TEXTURE_FEATURES_ENABLED = True
    HU_MOMENTS_ENABLED = True