from enum import IntEnum


class MilestoneStatus(IntEnum):
    IMPLEMENTING = 0
    OUTSTANDING = 1
    PAID = 2
    DONE = 3


class ProjectInvationResult(IntEnum):
    SUCCEEDED = 0
    EMAIL_NOT_FOUND = 1
    PROJECT_NOT_FOUND = 2
    PERMISSION_ERROR = 3
    ALREADY_INVITED_AS_OTHER_ROLE = 4
    PROJECT_NOT_ONGOING = 5
    UNKNOWN_ERROR = 6