"""Core exceptions for the application."""


class AppException(Exception):
    """Base application exception."""

    def __init__(self, code: int, message: str, details: dict = None):
        self.code = code
        self.message = message
        self.details = details or {}


class NotFoundError(AppException):
    """Resource not found exception."""

    def __init__(self, resource: str, resource_id: int = None):
        super().__init__(
            code=10002,
            message=f"{resource} not found",
            details={"resource": resource, "id": resource_id}
        )


class ValidationError(AppException):
    """Validation error exception."""

    def __init__(self, message: str, details: dict = None):
        super().__init__(code=10001, message=message, details=details)


class AuthenticationError(AppException):
    """Authentication error exception."""

    def __init__(self, message: str = "Authentication failed"):
        super().__init__(code=20001, message=message)


class AuthorizationError(AppException):
    """Authorization error exception."""

    def __init__(self, message: str = "Permission denied"):
        super().__init__(code=20002, message=message)


class SignatureError(AppException):
    """Signature related error exception."""

    def __init__(self, message: str, details: dict = None):
        super().__init__(code=40000, message=message, details=details)


class SignatureExpiredError(SignatureError):
    """Signature request expired exception."""

    def __init__(self):
        super().__init__(code=40001, message="Signature request has expired")


class SignatureAlreadySignedError(SignatureError):
    """Signature already completed exception."""

    def __init__(self):
        super().__init__(code=40002, message="Signature request already completed")


class ContractError(AppException):
    """Contract related error exception."""

    def __init__(self, message: str, details: dict = None):
        super().__init__(code=50000, message=message, details=details)


class InvalidContractStatusError(ContractError):
    """Invalid contract status for operation."""

    def __init__(self, current_status: str, required_status: str):
        super().__init__(
            message=f"Invalid contract status: {current_status}, expected: {required_status}",
            details={"current_status": current_status, "required_status": required_status}
        )


class LLMError(AppException):
    """LLM service error exception."""

    def __init__(self, message: str = "LLM service error"):
        super().__init__(code=30001, message=message)