#!/usr/bin/env python3

# Copyright (c) 2019, Alchemy Meister
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#     * Redistributions of source code must retain the above copyright notice,
#       this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice,this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the name of the copyright holder nor the names of its
#       contributors may be used to endorse or promote products derived from
#       this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# POSSIBILITY OF SUCH DAMAGE.

"""
"""

import enum

class ComplexEnumMember():
    """
    """
    def __init__(self, value=None, **kwargs):
        self.value = value
        for attribute_name, attribute_value in kwargs.items():
            setattr(self, attribute_name, attribute_value)

class ComplexEnum(enum.Enum):
    """
    """
    def __new__(cls, complex_enum_member):
        enum_instance = object.__new__(cls)
        if complex_enum_member.value is None:
            setattr(enum_instance, '_value_', len(cls.__members__))
        else:
            duplicated_member = [
                member for member in cls.__members__.values()
                if member.value == complex_enum_member.value
            ]
            if duplicated_member:
                raise ValueError(
                    (
                        'duplicate value found in {} that matches {}. '
                        "Duplicated member is after {} member's definition"
                    ).format(
                        cls.__name__,
                        list(cls.__members__.keys())[
                            list(cls.__members__.values()).index(
                                duplicated_member[0]
                            )
                        ],
                        list(cls.__members__.keys())[-1]
                    )
                )
            setattr(enum_instance, '_value_', complex_enum_member.value)
        for attrib_name, attrib_value in vars(complex_enum_member).items():
            if attrib_name != 'value':
                setattr(enum_instance, attrib_name, attrib_value)
        return enum_instance
