29 lines
1021 B
Python
29 lines
1021 B
Python
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from bemani.data.types import UserID
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class RemoteUser:
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"""
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We use a nasty trick to tell the difference between a local and remote user.
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Local users are assumed to be in the range of 1 to 2^32-1. Remote users therefore
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are anything above that range. We cast card IDs to user IDs by treating them as
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raw integers and then wrapping them in the UserID type. This is how we can
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store local information in our DB for remote users, such as rival settings/etc.
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"""
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@staticmethod
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def card_to_userid(cardid: str) -> UserID:
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return UserID(int(cardid, 16))
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@staticmethod
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def userid_to_card(userid: UserID) -> str:
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cardid = hex(abs(userid))[2:].upper()
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if len(cardid) <= 8:
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raise Exception('Got invalid card back when converting from UserID!')
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if len(cardid) < 16:
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cardid = ('0' * (16 - len(cardid))) + cardid
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return cardid
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@staticmethod
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def is_remote(userid: UserID) -> bool:
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return userid > (2**32 - 1)
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