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-rw-r--r--vk/tracking/db/record.py98
1 files changed, 98 insertions, 0 deletions
diff --git a/vk/tracking/db/record.py b/vk/tracking/db/record.py
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+++ b/vk/tracking/db/record.py
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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 MutableMapping
+from datetime import datetime
+
+from .timestamp import Timestamp
+from vk.user import LastSeen, LastSeenField, User, UserField
+
+class Record(MutableMapping):
+ FIELDS = (
+ UserField.UID,
+ UserField.FIRST_NAME,
+ UserField.LAST_NAME,
+ UserField.SCREEN_NAME,
+ 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).dt
+ elif isinstance(value, Timestamp):
+ value = value.dt
+ 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].dt
+ 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