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# Copyright (c) 2016 Egor Tensin <Egor.Tensin@gmail.com>
# This file is part of the "VK scripts" project.
# For details, see https://github.com/egor-tensin/vk-scripts.
# Distributed under the MIT License.
from collections import OrderedDict
from collections.abc import MutableMapping
from datetime import datetime
from .timestamp import Timestamp
from vk.last_seen import LastSeen, LastSeenField
from vk.user import User, UserField
class Record(MutableMapping):
FIELDS = (
UserField.UID,
UserField.FIRST_NAME,
UserField.LAST_NAME,
UserField.DOMAIN,
UserField.ONLINE,
LastSeenField.TIME,
LastSeenField.PLATFORM,
)
def __init__(self, timestamp=None, fields=None):
if timestamp is None:
timestamp = Timestamp()
if fields is None:
fields = OrderedDict()
self._timestamp = timestamp
self._fields = fields
def __getitem__(self, field):
if field is LastSeenField.TIME:
return Timestamp(self._fields[field])
return self._fields[field]
def __setitem__(self, field, value):
if field is LastSeenField.TIME:
if isinstance(value, str):
value = Timestamp.from_string(value).impl
elif isinstance(value, Timestamp):
value = value.impl
elif isinstance(value, datetime):
pass
else:
raise TypeError()
if isinstance(field, LastSeenField):
self._fields[field] = LastSeen.parse(field, value)
elif isinstance(field, UserField):
self._fields[field] = User.parse(field, value)
else:
raise TypeError()
def __delitem__(self, field):
del self._fields[field]
def __iter__(self):
return iter(self._fields)
def __len__(self):
return len(self._fields)
def get_timestamp(self):
return self._timestamp
@staticmethod
def from_user(user):
record = Record()
for field in Record.FIELDS:
if isinstance(field, UserField):
record[field] = user[field]
elif isinstance(field, LastSeenField):
record[field] = user.get_last_seen()[field]
else:
assert False
return record
def _update_last_seen_field(self, last_seen, field):
if field is LastSeenField.TIME:
last_seen[field] = self[field].impl
else:
last_seen[field] = self[field]
def _update_user_field(self, user, field):
user[field] = self[field]
def to_user(self):
user = User()
last_seen = LastSeen()
for field in self:
if isinstance(field, LastSeenField):
self._update_last_seen_field(last_seen, field)
elif isinstance(field, UserField):
self._update_user_field(user, field)
else:
assert False
if len(last_seen):
user.set_last_seen(last_seen)
return user
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