789 lines
23 KiB
Python
789 lines
23 KiB
Python
# Calendar.social
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# Copyright (C) 2018 Gergely Polonkai
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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"""Database models for Calendar.social
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"""
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from datetime import datetime
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from enum import Enum
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from warnings import warn
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from flask_babelex import lazy_gettext
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from flask_security import UserMixin, RoleMixin
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from flask_sqlalchemy import SQLAlchemy
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from sqlalchemy.orm.exc import NoResultFound
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from sqlalchemy_utils.types.choice import ChoiceType
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from .cache import cache
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from .utils import force_locale
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db = SQLAlchemy()
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users_roles = db.Table(
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'users_roles',
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db.Column('user_id', db.Integer(), db.ForeignKey('users.id')),
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db.Column('role_id', db.Integer(), db.ForeignKey('roles.id')))
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def generate_uuid():
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"""Generate a UUID (version 4)
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:returns: the hexadecimal representation of the generated UUID
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:rtype: str
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"""
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from uuid import uuid4
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return uuid4().hex
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def _(translate): # pylint: disable=invalid-name
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"""Function to mark strings as translatable
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The actual translation will be fetched later in `:meth:AuditLog.get_message`.
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"""
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return translate
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class NotificationAction(Enum):
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"""The possible values for notification actions
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"""
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#: A user followed another
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follow = 1
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#: A user has been invited to an event
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invite = 2
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NOTIFICATION_ACTION_MESSAGES = {
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NotificationAction.follow: (_('%(actor)s followed you'), _('%(actor)s followed %(item)s')),
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NotificationAction.invite: (None, _('%(actor)s invited you to %(item)s')),
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}
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class ResponseType(Enum):
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"""Enumeration of event availabilities
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"""
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#: The user is about to attend the event
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going = 0
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#: The user will probably attend the event
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probably_going = 1
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#: The user is interested in the event, but might not go
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probably_not_going = 2
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#: The user won’t attend the event
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not_going = 3
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def __hash__(self):
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return Enum.__hash__(self)
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def __eq__(self, other):
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if isinstance(other, str):
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return self.name.lower() == other.lower() # pylint: disable=no-member
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if isinstance(other, (int, float)):
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return self.value == other
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return Enum.__eq__(self, other)
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class EventVisibility(Enum):
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"""Enumeration for event visibility
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"""
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#: The event is private, only attendees and people invited can see the details
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private = 0
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#: The event is public, anyone can see the details
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public = 5
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EVENT_VISIBILITY_TRANSLATIONS = {
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EventVisibility.private: _('Visible only to attendees'),
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EventVisibility.public: _('Visible to everyone'),
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}
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class SettingsProxy:
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"""Proxy object to get settings for a user
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"""
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def __init__(self, user):
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self.user = user
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def __getitem__(self, key):
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setting = UserSetting.query \
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.filter(UserSetting.user == self.user) \
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.filter(UserSetting.key == key) \
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.first()
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if setting is None:
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return None
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return setting.value
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def __setitem__(self, key, value):
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try:
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setting = UserSetting.query \
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.filter(UserSetting.user == self.user) \
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.filter(UserSetting.key == key) \
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.one()
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except NoResultFound:
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setting = UserSetting(user=self.user, key=key)
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setting.value = str(value)
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db.session.add(setting)
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def __repr__(self):
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return f'<SettingsProxy for {self.user}>'
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class User(db.Model, UserMixin):
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"""Database model for users
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"""
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__tablename__ = 'users'
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# pylint: disable=invalid-name
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id = db.Column(db.Integer(), primary_key=True)
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#: The username of the user. This is also the display name and thus is immutable
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username = db.Column(db.String(length=50), unique=True, nullable=False)
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#: The email address of the user
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email = db.Column(db.String(length=255), unique=True, nullable=True)
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#: The (hashed) password of the user
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password = db.Column(db.String(length=255))
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#: A flag to show whether the user is enabled (active) or not
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active = db.Column(db.Boolean(), default=False)
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#: The timestamp when this user was created
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created_at = db.Column(db.DateTime(), default=datetime.utcnow)
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#: The timestamp when the user was activated
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confirmed_at = db.Column(db.DateTime())
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#: The roles of the user
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roles = db.relationship('Role',
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secondary=users_roles,
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backref=db.backref('users', lazy='dynamic'))
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@property
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def settings(self):
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"""Get a settings proxy for the user
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"""
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proxy = getattr(self, '_settings', None)
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if proxy is None:
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proxy = SettingsProxy(self)
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setattr(self, '_settings', proxy)
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return proxy
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@property
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def timezone(self):
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"""The user’s time zone
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If the user didn’t set a time zone yet, the application default is used.
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"""
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from flask import current_app
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from pytz import timezone
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from pytz.exceptions import UnknownTimeZoneError
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timezone_str = self.settings['timezone']
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if timezone_str:
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try:
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return timezone(timezone_str)
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except UnknownTimeZoneError:
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warn(f'Timezone of {self} (or the default timezone) "{timezone_str}" is invalid')
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return current_app.timezone
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@property
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def session_list_key(self):
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"""The cache key of this user’s session list
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"""
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return f'open_sessions:{self.id}'
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@property
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def active_sessions(self):
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"""The list of active sessions of this user
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"""
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return cache.get(self.session_list_key) or []
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@active_sessions.setter
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def active_sessions(self, value):
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cache.set(self.session_list_key, list(value))
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def __repr__(self):
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return f'<User {self.id}({self.username})>'
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class Role(db.Model, RoleMixin): # pylint: disable=too-few-public-methods
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"""Database model for roles
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"""
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__tablename__ = 'roles'
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# pylint: disable=invalid-name
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id = db.Column(db.Integer(), primary_key=True)
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#: The name of the role
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name = db.Column(db.Unicode(length=80), unique=True)
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#: A description of the role
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description = db.Column(db.UnicodeText)
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def __repr__(self):
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return f'<Role {self.id}({self.name})>'
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class Profile(db.Model): # pylint: disable=too-few-public-methods
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"""Database model for user profiles
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"""
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__tablename__ = 'profiles'
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# pylint: disable=invalid-name
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id = db.Column(db.Integer(), primary_key=True)
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#: The ID of the local user this profile belongs to
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user_id = db.Column(db.Integer(), db.ForeignKey('users.id'), nullable=True, unique=True)
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user = db.relationship(User, backref=db.backref('profile', uselist=False))
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#: The username this profile belongs to. If ``None``, `user_id` must be set
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username = db.Column(db.String(length=50), nullable=True)
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#: The domain this profile originates from. If ``None``, `user_id` must be set
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domain = db.Column(db.Unicode(length=100), nullable=True)
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#: The display name
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display_name = db.Column(db.Unicode(length=80), nullable=False)
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#: If locked, a profile cannot be followed without the owner’s consent
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locked = db.Column(db.Boolean(), default=False)
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@property
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def fqn(self):
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"""The fully qualified name of the profile
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For local profiles, this is in the form ``@username``; for remote users, it’s in the form
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``@username@domain``.
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"""
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if self.user:
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return f'@{self.user.username}'
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return f'@{self.username}@{self.domain}'
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def __repr__(self):
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if self.user:
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username = self.user.username
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domain = ''
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else:
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username = self.username
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domain = f'@{self.domain}'
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return f'<Profile {self.id}(@{username}{domain})>'
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def __str__(self):
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ret = ''
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if self.display_name:
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ret = self.display_name + ' '
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ret += f'({self.fqn})'
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return ret
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@property
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def followed_list(self):
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"""List of profiles this profile is following
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"""
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# This will always be empty for remote profiles
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if not self.user:
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return []
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return Profile.query \
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.join(UserFollow.followed) \
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.filter(UserFollow.follower == self) \
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.filter(UserFollow.accepted_at.isnot(None))
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@property
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def follower_list(self):
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"""List of profiles that follow this profile
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"""
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# This will always be empty for remote profiles
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if not self.user:
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return []
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return Profile.query \
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.join(UserFollow.follower) \
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.filter(UserFollow.followed == self) \
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.filter(UserFollow.accepted_at.isnot(None))
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@property
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def url(self):
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"""Get the URL for this profile
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"""
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from flask import url_for
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if self.user:
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return url_for('display_profile', username=self.user.username)
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return NotImplemented
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def follow(self, follower):
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"""Make ``follower`` follow this profile
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"""
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if not isinstance(follower, Profile):
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raise TypeError('Folloer must be a Profile object')
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timestamp = None if self.locked else datetime.utcnow()
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user_follow = UserFollow(follower=follower, followed=self, accepted_at=timestamp)
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db.session.add(user_follow)
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notification = self.notify(follower, self, NotificationAction.follow)
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db.session.add(notification)
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return user_follow
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def notify(self, actor, item, action):
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"""Notify this profile about ``action`` on ``item`` by ``actor``
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:param actor: the actor who generated the notification
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:type actor: Profile
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:param item: the item ``action`` was performed on
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:type item: any
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:param action: the type of the action
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:type action: NotificationAction, str
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:raises TypeError: if ``actor`` is not a `Profile` object
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:returns: the generated notification. It is already added to the database session, but
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not committed
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:rtype: Notification
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"""
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if not isinstance(actor, Profile):
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raise TypeError('actor must be a Profile instance')
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if isinstance(action, str):
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action = NotificationAction[action]
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notification = Notification(profile=self, actor=actor, item=item, action=action)
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return notification
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class Event(db.Model):
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"""Database model for events
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"""
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__tablename__ = 'events'
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# pylint: disable=invalid-name
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id = db.Column(db.Integer(), primary_key=True)
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#: The UUID of the event. This is what is presented to the users and used in federation.
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event_uuid = db.Column(db.String(length=40), unique=True, nullable=False, default=generate_uuid)
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#: The ID of the profile who created the event
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profile_id = db.Column(db.Integer(), db.ForeignKey('profiles.id'), nullable=False)
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profile = db.relationship('Profile', backref=db.backref('events', lazy='dynamic'))
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#: The title of the event
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title = db.Column(db.Unicode(length=200), nullable=False)
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#: The time zone to be used for `start_time` and `end_time`
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time_zone = db.Column(db.String(length=80), nullable=False)
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#: The starting timestamp of the event. It is in the UTC time zone
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start_time = db.Column(db.DateTime(), nullable=False)
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#: The ending timestamp of the event. It is in the UTC time zone
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end_time = db.Column(db.DateTime(), nullable=False)
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#: If `True`, the event is a whole-day event
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all_day = db.Column(db.Boolean(), default=False)
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#: The description of the event
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description = db.Column(db.UnicodeText())
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#: The visibility of the event
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visibility = db.Column(db.Enum(EventVisibility), nullable=False)
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def __as_tz(self, timestamp, as_timezone=None):
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from pytz import timezone, utc
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utc_timestamp = utc.localize(dt=timestamp)
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return utc_timestamp.astimezone(as_timezone or timezone(self.time_zone))
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@property
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def start_time_tz(self):
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"""The same timestamp as `start_time`, but in the time zone specified by `time_zone`.
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"""
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return self.__as_tz(self.start_time)
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@property
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def end_time_tz(self):
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"""The same timestamp as `end_time`, but in the time zone specified by `time_zone`.
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"""
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return self.__as_tz(self.end_time)
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def start_time_for_user(self, user):
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"""The same timestamp as `start_time`, but in the time zone of `user`
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"""
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return self.__as_tz(self.start_time, as_timezone=user.timezone)
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def end_time_for_user(self, user):
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"""The same timestamp as `end_time`, but in the time zone of `user`
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"""
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return self.__as_tz(self.end_time, as_timezone=user.timezone)
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||
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||
def __repr__(self):
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return f'<Event {self.id} ({self.title}) of {self.profile}>'
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||
|
||
def __str__(self):
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||
return self.title
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||
|
||
@property
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def url(self):
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"""The URL of the event
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||
"""
|
||
|
||
from flask import url_for
|
||
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||
return url_for('event_details', event_uuid=self.event_uuid)
|
||
|
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def invite(self, inviter, invited):
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"""Invite ``invited`` to the event
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||
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The invitation will arrive from ``inviter``.
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"""
|
||
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invite = Invitation(event=self, sender=inviter, invitee=invited)
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db.session.add(invite)
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notification = invited.notify(inviter, self, NotificationAction.invite)
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||
db.session.add(notification)
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||
|
||
return invite
|
||
|
||
|
||
class UserSetting(db.Model): # pylint: disable=too-few-public-methods
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||
"""Database model for user settings
|
||
"""
|
||
|
||
__tablename__ = 'user_settings'
|
||
|
||
#: The ID of the user this setting belongs to
|
||
user_id = db.Column(db.Integer(), db.ForeignKey('users.id'), primary_key=True)
|
||
|
||
user = db.relationship('User')
|
||
|
||
#: The settings key
|
||
key = db.Column(db.String(length=40), primary_key=True)
|
||
|
||
#: The settings value
|
||
value = db.Column(db.UnicodeText())
|
||
|
||
def __repr__(self):
|
||
return f'<UserSetting of {self.user}, {self.key}="{self.value}">'
|
||
|
||
|
||
class AuditLog(db.Model):
|
||
"""Database model for audit log records
|
||
"""
|
||
|
||
__tablename__ = 'audit_log'
|
||
# pylint: disable=invalid-name
|
||
id = db.Column(db.Integer(), primary_key=True)
|
||
|
||
TYPE_LOGIN_SUCCESS = 'login'
|
||
TYPE_LOGIN_FAIL = 'failed_login'
|
||
TYPE_LOGOUT = 'logout'
|
||
|
||
TYPES = (
|
||
(TYPE_LOGIN_SUCCESS, _('%(user)s logged in')),
|
||
(TYPE_LOGIN_FAIL, _('%(user)s failed to log in')),
|
||
(TYPE_LOGOUT, _('%(user)s logged out')),
|
||
)
|
||
|
||
user_id = db.Column(db.Integer(), db.ForeignKey('users.id'))
|
||
|
||
user = db.relationship('User')
|
||
|
||
ip_address = db.Column(db.String(length=40), nullable=False)
|
||
|
||
timestamp = db.Column(db.DateTime(), default=datetime.utcnow, nullable=False)
|
||
|
||
log_type = db.Column(ChoiceType(TYPES), nullable=False, index=True)
|
||
|
||
extra_data = db.Column(db.UnicodeText())
|
||
|
||
def __str__(self):
|
||
format_string = dict(self.TYPES).get(self.log_type,
|
||
_('UNKNOWN RECORD "%(log_type)s" for %(user)s'))
|
||
message = str(self.timestamp) + \
|
||
(format_string % {
|
||
'user': self.user.username,
|
||
'log_type': self.log_type
|
||
})
|
||
|
||
if self.extra_data:
|
||
message += f' {self.extra_data}'
|
||
|
||
return message
|
||
|
||
def __repr__(self):
|
||
return f'<AuditLog {self.log_type} for {self.user} at {self.timestamp}>'
|
||
|
||
@classmethod
|
||
def get_message(cls, key, *args, **kwargs):
|
||
"""Get the translated message for ``key``
|
||
"""
|
||
|
||
return lazy_gettext(dict(cls.TYPES).get(key), *args, **kwargs)
|
||
|
||
@classmethod
|
||
def log(cls, user, log_type, extra_data=None, logger=None):
|
||
"""Create a new audit log record
|
||
|
||
:param user: the user the new record corresponds to
|
||
:type user: User
|
||
:param log_type: the type of the record. Must be present in `TYPES`
|
||
:type log_type: str
|
||
:param extra_data: extra text to be added to the record
|
||
:type extra_data: str, None
|
||
:param logger: if set, logs will go to this logger instead of the default (calsocial)
|
||
:type logger: Logger
|
||
:raises TypeError: if ``user`` is not an instance of `User`
|
||
:raises ValueError: if ``log_type`` is not a valid log type
|
||
"""
|
||
|
||
from logging import getLogger
|
||
|
||
from flask import has_request_context, request
|
||
|
||
logger = logger or getLogger('calsocial')
|
||
|
||
if not isinstance(user, User):
|
||
raise TypeError('user must be a User instance')
|
||
|
||
if log_type not in dict(cls.TYPES):
|
||
raise ValueError('log_type must be a valid log type')
|
||
|
||
if has_request_context():
|
||
ip = request.remote_addr or 'UNKNOWN'
|
||
else:
|
||
ip = 'NON-REQUEST'
|
||
|
||
record = cls(user=user,
|
||
timestamp=datetime.utcnow(),
|
||
log_type=log_type,
|
||
ip_address=ip,
|
||
extra_data=extra_data)
|
||
db.session.add(record)
|
||
db.session.commit()
|
||
|
||
with force_locale('en'):
|
||
message = f'Audit: [{ip}] [{user.id}] ' + cls.get_message(log_type, user=user.username)
|
||
|
||
logger.info(message)
|
||
|
||
|
||
class UserFollow(db.Model): # pylint: disable=too-few-public-methods
|
||
"""Database model for user follows
|
||
"""
|
||
|
||
#: The ID of the profile that is following the other
|
||
follower_id = db.Column(db.Integer(), db.ForeignKey('profiles.id'), primary_key=True)
|
||
|
||
follower = db.relationship('Profile', foreign_keys=[follower_id])
|
||
|
||
#: The ID of the profile being followed
|
||
followed_id = db.Column(db.Integer(), db.ForeignKey('profiles.id'), primary_key=True)
|
||
|
||
followed = db.relationship('Profile', foreign_keys=[followed_id])
|
||
|
||
#: The timestamp when the follow was initiated
|
||
initiated_at = db.Column(db.DateTime(), default=datetime.utcnow, nullable=False)
|
||
|
||
#: The timestamp when the follow was accepted
|
||
accepted_at = db.Column(db.DateTime(), nullable=True)
|
||
|
||
def accept(self):
|
||
"""Accept this follow request
|
||
"""
|
||
|
||
self.accepted_at = datetime.utcnow()
|
||
|
||
|
||
class Notification(db.Model):
|
||
"""Database model for notifications
|
||
"""
|
||
|
||
__tablename__ = 'notifications'
|
||
# pylint: disable=invalid-name
|
||
id = db.Column(db.Integer(), primary_key=True)
|
||
|
||
#: The recipient of the notification
|
||
profile_id = db.Column(db.Integer(), db.ForeignKey('profiles.id'), nullable=False)
|
||
|
||
profile = db.relationship('Profile',
|
||
backref=db.backref('notifications', lazy='dynamic'),
|
||
foreign_keys=[profile_id])
|
||
|
||
#: The profile that generated the notification
|
||
actor_id = db.Column(db.Integer(), db.ForeignKey('profiles.id'), nullable=True)
|
||
|
||
actor = db.relationship('Profile', foreign_keys=[actor_id])
|
||
|
||
#: The item (e.g. event) that generated the notification
|
||
item_id = db.Column(db.Integer(), nullable=True)
|
||
|
||
#: The type of the item that generated the notification
|
||
item_type = db.Column(db.String(length=40))
|
||
|
||
#: The type of action
|
||
action = db.Column(db.Enum(NotificationAction))
|
||
|
||
#: The timestamp when the notification was created
|
||
created_at = db.Column(db.DateTime(), default=datetime.utcnow, nullable=False)
|
||
|
||
#: The timestamp when the notification was read
|
||
read_at = db.Column(db.DateTime(), nullable=True)
|
||
|
||
@property
|
||
def item(self):
|
||
"""The subject of the notification
|
||
"""
|
||
|
||
item_class = self._decl_class_registry.get(self.item_type)
|
||
|
||
if item_class is None:
|
||
warn(f'Unknown item type {self.item_type}')
|
||
|
||
return None
|
||
|
||
return item_class.query.get(self.item_id)
|
||
|
||
@item.setter
|
||
def item(self, value):
|
||
self.item_type = value.__class__.__name__
|
||
self.item_id = value.id
|
||
|
||
@property
|
||
def message(self):
|
||
"""Get the translated message for ``key``
|
||
"""
|
||
|
||
from flask_security import current_user
|
||
|
||
messages = NOTIFICATION_ACTION_MESSAGES.get(self.action)
|
||
message = messages[0 if self.item == current_user.profile else 1]
|
||
|
||
return lazy_gettext(message, actor=self.actor, item=self.item)
|
||
|
||
@property
|
||
def html(self):
|
||
"""Get the translated message for ``key`` in HTML format
|
||
"""
|
||
|
||
from flask import Markup
|
||
from flask_security import current_user
|
||
|
||
messages = NOTIFICATION_ACTION_MESSAGES.get(self.action)
|
||
message = messages[0 if self.item == current_user.profile else 1]
|
||
|
||
actor = f'<a href="{self.actor.url}">{self.actor}</a>'
|
||
item = f'<a href="{self.item.url}">{self.item}</a>'
|
||
|
||
return Markup(lazy_gettext(message, actor=actor, item=item))
|
||
|
||
|
||
class Invitation(db.Model): # pylint: disable=too-few-public-methods
|
||
"""Database model for event invitations
|
||
"""
|
||
|
||
__tablename__ = 'invitations'
|
||
# pylint: disable=invalid-name
|
||
id = db.Column(db.Integer(), primary_key=True)
|
||
|
||
#: The ID of the sender’s profile
|
||
sender_id = db.Column(db.Integer(), db.ForeignKey('profiles.id'), index=True)
|
||
|
||
sender = db.relationship('Profile', foreign_keys=[sender_id])
|
||
|
||
#: The ID of the invitee’s profile
|
||
invitee_id = db.Column(db.Integer(), db.ForeignKey('profiles.id'), index=True)
|
||
|
||
invitee = db.relationship('Profile', foreign_keys=[invitee_id])
|
||
|
||
#: The ID of the event
|
||
event_id = db.Column(db.Integer(), db.ForeignKey('events.id'), index=True)
|
||
|
||
event = db.relationship('Event', backref=db.backref('invitations', lazy='dynamic'))
|
||
|
||
#: The timestamp of the invitation
|
||
timestamp = db.Column(db.DateTime(), default=datetime.utcnow)
|
||
|
||
|
||
class Response(db.Model): # pylint: disable=too-few-public-methods
|
||
"""Database model for RSVPs.
|
||
"""
|
||
|
||
__tablename__ = 'responses'
|
||
|
||
#: The profile that’s sending the RSVP
|
||
profile_id = db.Column(db.Integer(), db.ForeignKey('profiles.id'), primary_key=True)
|
||
|
||
profile = db.relationship('Profile')
|
||
|
||
#: The ID of the event
|
||
event_id = db.Column(db.Integer(), db.ForeignKey('events.id'), primary_key=True)
|
||
|
||
event = db.relationship('Event')
|
||
|
||
#: The ID of the invitation, if the user is responding to an invitation
|
||
invitation_id = db.Column(db.Integer(), db.ForeignKey('invitations.id'), nullable=True)
|
||
|
||
invitation = db.relationship('Invitation')
|
||
|
||
#: The timestamp of the response
|
||
timestamp = db.Column(db.DateTime(), default=datetime.utcnow)
|
||
|
||
#: The response itself
|
||
response = db.Column(db.Enum(ResponseType), nullable=False)
|