"""
Custom exception classes for the application.
"""
from typing import Optional, Any


class PDFProcessorError(Exception):
    """Base exception for PDF processor errors."""

    def __init__(self, message: str, details: Optional[dict[str, Any]] = None):
        super().__init__(message)
        self.message = message
        self.details = details or {}


class PDFExtractionError(PDFProcessorError):
    """Raised when PDF text extraction fails."""
    pass


class OCRError(PDFProcessorError):
    """Raised when OCR processing fails."""
    pass


class MappingError(PDFProcessorError):
    """Raised when field mapping fails."""
    pass


class PDFFillingError(PDFProcessorError):
    """Raised when PDF form filling fails."""
    pass


class FileValidationError(PDFProcessorError):
    """Raised when file validation fails."""
    pass


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