# Copyright (c) Jean-Charles Lefebvre
# SPDX-License-Identifier: MIT


class FitError(Exception):
    pass


class FitHeaderError(FitError):
    pass


class FitCRCError(FitError):
    pass


class FitEOFError(FitError):
    def __init__(self, expected, got, offset, message=''):
        self.expected = expected  #: number of expected bytes
        self.got = got  #: number of bytes read
        self.offset = offset  #: the file offset from which reading took place

        desc = f'expected {self.expected} bytes, got {self.got} @ {self.offset}'
        if not message:
            message = desc
        else:
            message += ' (' + desc + ')'

        super().__init__(message)


class FitParseError(FitError):
    def __init__(self, offset, message=''):
        self.offset = offset  #: the file offset from which reading took place

        desc = 'FIT parsing error @ ' + str(offset)
        if message:
            desc += ': ' + message

        super().__init__(desc)