"""
Custom Exception Classes for Vehicle Detection System
======================================================

Defines custom exceptions for better error handling and user feedback.

Authors:
    - Abhay Gupta (0205CC221005)
    - Aditi Lakhera (0205CC221011)
    - Balraj Patel (0205CC221049)
    - Bhumika Patel (0205CC221050)
"""


class VehicleDetectionError(Exception):
    """Base exception for vehicle detection system."""
    pass


class VideoProcessingError(VehicleDetectionError):
    """Raised when video processing fails."""
    pass


class ModelLoadError(VehicleDetectionError):
    """Raised when model loading fails."""
    pass


class ConfigurationError(VehicleDetectionError):
    """Raised when configuration is invalid."""
    pass


class DetectionError(VehicleDetectionError):
    """Raised when object detection fails."""
    pass


class TrackingError(VehicleDetectionError):
    """Raised when object tracking fails."""
    pass


class SpeedEstimationError(VehicleDetectionError):
    """Raised when speed estimation fails."""
    pass