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# Copyright 2016 Egor Tensin <Egor.Tensin@gmail.com>
# This file is licensed under the terms of the MIT License.
# See LICENSE.txt for details.
from collections import OrderedDict
from collections.abc import Hashable, Mapping, MutableMapping
from datetime import datetime, timezone
from enum import Enum
from numbers import Real, Integral
class UserField(Enum):
UID = 'uid'
FIRST_NAME = 'first_name'
LAST_NAME = 'last_name'
SCREEN_NAME = 'screen_name'
ONLINE = 'online'
LAST_SEEN = 'last_seen'
def __str__(self):
return self.value
class LastSeenField(Enum):
TIME = 'time'
def __str__(self):
return self.value
class LastSeen(MutableMapping):
@staticmethod
def from_api_response(source):
instance = LastSeen()
for field in LastSeenField:
if str(field) in source:
instance[field] = source[str(field)]
return instance
def __init__(self, fields=None):
if fields is None:
fields = OrderedDict()
self._fields = fields
def __getitem__(self, field):
return self._fields[field]
def __setitem__(self, field, value):
self._fields[field] = self.parse(field, value)
def __delitem__(self, field):
del self._fields[field]
def __iter__(self, field):
return iter(self._fields)
def __len__(self, field):
return len(self._fields)
@staticmethod
def parse(field, value):
if field in LastSeen._FIELD_PARSERS:
return LastSeen._FIELD_PARSERS[field](value)
else:
return LastSeen._DEFAULT_FIELD_PARSER(value)
def _parse_time(x):
if isinstance(x, datetime):
if x.tzinfo is None or x.tzinfo.utcoffset(x) is None:
x = x.replace(tzinfo=timezone.utc)
return x
elif isinstance(x, Real) or isinstance(x, Integral):
return datetime.fromtimestamp(x, tz=timezone.utc)
else:
raise TypeError()
_FIELD_PARSERS = {
LastSeenField.TIME: _parse_time,
}
_DEFAULT_FIELD_PARSER = str
def has_time(self):
return LastSeenField.TIME in self
def get_time(self):
return self[LastSeenField.TIME]
def set_time(self, t):
self[LastSeenField.TIME] = t
class User(Hashable, MutableMapping):
@staticmethod
def from_api_response(source):
instance = User()
for field in UserField:
if str(field) in source:
instance[field] = source[str(field)]
return instance
def __init__(self, fields=None):
if fields is None:
fields = OrderedDict()
self._fields = fields
def __eq__(self, other):
return self._fields == other._fields
def __hash__(self, fields=None):
return hash(self.get_uid())
def __getitem__(self, field):
return self._fields[field]
def __setitem__(self, field, value):
self._fields[field] = self.parse(field, value)
def __delitem__(self, field):
del self._fields[field]
def __iter__(self):
return iter(self._fields)
def __len__(self):
return len(self._fields)
@staticmethod
def parse(field, value):
if field in User._FIELD_PARSERS:
return User._FIELD_PARSERS[field](value)
else:
return User._DEFAULT_FIELD_PARSER(value)
def _parse_last_seen(x):
if isinstance(x, LastSeen):
return x
elif isinstance(x, Mapping):
return LastSeen.from_api_response(x)
else:
raise TypeError()
_FIELD_PARSERS = {
UserField.UID: int,
UserField.ONLINE: bool,
UserField.LAST_SEEN: _parse_last_seen,
}
_DEFAULT_FIELD_PARSER = str
def get_uid(self):
return self[UserField.UID]
def get_first_name(self):
return self[UserField.FIRST_NAME]
def set_first_name(self, name):
self[UserField.FIRST_NAME] = name
def has_last_name(self):
return UserField.LAST_NAME in self and self.get_last_name()
def get_last_name(self):
return self[UserField.LAST_NAME]
def set_last_name(self, name):
self[UserField.LAST_NAME] = name
def has_screen_name(self):
return UserField.SCREEN_NAME in self
def get_screen_name(self):
if self.has_screen_name():
return self[UserField.SCREEN_NAME]
else:
return 'id' + str(self.get_uid())
def set_screen_name(self, name):
self[UserField.SCREEN_NAME] = name
def has_online_flag(self):
return UserField.ONLINE in self
def is_online(self):
return self[UserField.ONLINE]
def is_offline(self):
return not self.is_online()
def set_online_flag(self, value=True):
self[UserField.ONLINE] = value
def has_last_seen(self):
return UserField.LAST_SEEN in self
def get_last_seen(self):
return self[UserField.LAST_SEEN]
def set_last_seen(self, last_seen):
self[UserField.LAST_SEEN] = last_seen
def get_last_seen_time(self):
return self.has_last_seen() and self.get_last_seen().has_time()
def get_last_seen_time(self):
return self[UserField.LAST_SEEN].get_time()
def get_last_seen_time_local(self):
return self[UserField.LAST_SEEN].get_time().astimezone()
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