openmedialibrary/oml/user/models.py

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# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
import json
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import sqlalchemy as sa
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from changelog import Changelog
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from db import MutableDict
from queryparser import Parser
import db
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import json_pickler
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import settings
import state
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import logging
logger = logging.getLogger('oml.user.models')
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class User(db.Model):
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__tablename__ = 'user'
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created = sa.Column(sa.DateTime())
modified = sa.Column(sa.DateTime())
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id = sa.Column(sa.String(43), primary_key=True)
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info = sa.Column(MutableDict.as_mutable(sa.PickleType(pickler=json_pickler)))
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nickname = sa.Column(sa.String(256), unique=True)
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pending = sa.Column(sa.String(64)) # sent|received
queued = sa.Column(sa.Boolean())
peered = sa.Column(sa.Boolean())
online = sa.Column(sa.Boolean())
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def __repr__(self):
return self.id
@classmethod
def get(cls, id):
return cls.query.filter_by(id=id).first()
@classmethod
def get_or_create(cls, id):
user = cls.get(id)
if not user:
user = cls(id=id, peered=False, online=False)
user.info = {}
user.update_name()
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user.save()
return user
def save(self):
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state.db.session.add(self)
state.db.session.commit()
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@property
def name(self):
name = self.nickname if self.id != settings.USER_ID else ''
return name
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def json(self):
j = {}
if self.info:
j.update(self.info)
j['id'] = self.id
if self.pending:
j['pending'] = self.pending
j['peered'] = self.peered
j['online'] = self.is_online()
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j['nickname'] = self.info.get('nickname')
j['username'] = self.info.get('username') if self.id != settings.USER_ID else settings.preferences['username']
j['name'] = self.name
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return j
def is_online(self):
return state.nodes and state.nodes.is_online(self.id)
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def lists_json(self):
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return [{
'id': '%s:' % ('' if self.id == settings.USER_ID else self.nickname),
'name': 'Library',
'type': 'library',
'items': self.items.count(),
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'user': self.name
}] + [l.json() for l in self.lists.order_by('index_')]
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def update_peering(self, peered, username=None):
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was_peering = self.peered
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if peered:
self.pending = ''
if username:
self.info['username'] = username
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self.update_name()
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# FIXME: need to set peered to False to not trigger changelog event
# before other side receives acceptPeering request
self.peered = False
self.save()
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if not was_peering:
Changelog.record(state.user(), 'addpeer', self.id, self.nickname)
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self.peered = True
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self.queued = True
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self.save()
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else:
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self.pending = ''
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self.peered = False
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self.update_name()
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self.save()
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List.query.filter_by(user_id=self.id).delete()
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for i in self.items:
i.users.remove(self)
if not i.users:
i.delete()
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Changelog.query.filter_by(user_id=self.id).delete()
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self.save()
if was_peering:
Changelog.record(state.user(), 'removepeer', self.id)
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self.save()
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def update_name(self):
if self.id == settings.USER_ID:
name = settings.preferences.get('username', 'anonymous')
else:
name = self.info.get('nickname') or self.info.get('username') or 'anonymous'
nickname = name
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n = 2
while self.query.filter_by(nickname=nickname).filter(User.id!=self.id).first():
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nickname = '%s [%d]' % (name, n)
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n += 1
self.nickname = nickname
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list_items = sa.Table('listitem', db.metadata,
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sa.Column('list_id', sa.Integer(), sa.ForeignKey('list.id')),
sa.Column('item_id', sa.String(32), sa.ForeignKey('item.id'))
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)
class List(db.Model):
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__tablename__ = 'list'
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id = sa.Column(sa.Integer(), primary_key=True)
name = sa.Column(sa.String())
index_ = sa.Column(sa.Integer())
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type = sa.Column(sa.String(64))
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_query = sa.Column('query', MutableDict.as_mutable(sa.PickleType(pickler=json_pickler)))
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user_id = sa.Column(sa.String(43), sa.ForeignKey('user.id'))
user = sa.orm.relationship('User', backref=sa.orm.backref('lists', lazy='dynamic'))
items = sa.orm.relationship('Item', secondary=list_items,
backref=sa.orm.backref('lists', lazy='dynamic'))
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@classmethod
def get(cls, user_id, name=None):
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if name is None:
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user_id, name = cls.get_user_name(user_id)
return cls.query.filter_by(user_id=user_id, name=name).first()
@classmethod
def get_user_name(cls, user_id):
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nickname, name = user_id.split(':', 1)
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if nickname:
user = User.query.filter_by(nickname=nickname).first()
user_id = user.id
else:
user_id = settings.USER_ID
return user_id, name
@classmethod
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def get_or_create(cls, user_id, name=None, query=None):
if name is None:
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user_id, name = cls.get_user_name(user_id)
l = cls.get(user_id, name)
if not l:
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l = cls.create(user_id, name, query)
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return l
@classmethod
def create(cls, user_id, name, query=None):
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prefix = name
n = 2
while cls.get(user_id, name):
name = '%s [%s]' % (prefix, n)
n += 1
l = cls(user_id=user_id, name=name)
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l._query = query
l.type = 'smart' if l._query else 'static'
l.index_ = cls.query.filter_by(user_id=user_id).count()
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state.db.session.add(l)
state.db.session.commit()
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if user_id == settings.USER_ID:
if not l._query:
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Changelog.record(state.user(), 'addlist', l.name)
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return l
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@classmethod
def rename_user(cls, old, new):
for l in cls.query.filter(cls._query!=None):
def update_conditions(conditions):
changed = False
for c in conditions:
if 'conditions' in c:
changed = update_conditions(conditions)
else:
if c.get('key') == 'list' and c.get('value', '').startswith('%s:' % old):
c['value'] = '%s:%s' % new, c['value'].split(':', 1)[1]
changed = True
return changed
if update_conditions(l._query.get('conditions', [])):
l.save()
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def add_items(self, items):
from item.models import Item
for item_id in items:
i = Item.get(item_id)
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if i:
self.items.append(i)
if self.user_id == settings.USER_ID:
i.queue_download()
i.update()
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state.db.session.add(self)
state.db.session.commit()
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if self.user_id == settings.USER_ID:
Changelog.record(self.user, 'addlistitems', self.name, items)
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def remove_items(self, items):
from item.models import Item
for item_id in items:
i = Item.get(item_id)
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if i in self.items:
self.items.remove(i)
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i.update()
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state.db.session.add(self)
state.db.session.commit()
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if self.user_id == settings.USER_ID:
Changelog.record(self.user, 'removelistitems', self.name, items)
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def remove(self):
if not self._query:
for i in self.items:
self.items.remove(i)
if not self._query:
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if self.user_id == settings.USER_ID:
Changelog.record(self.user, 'removelist', self.name)
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state.db.session.delete(self)
state.db.session.commit()
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@property
def public_id(self):
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id = ''
if self.user_id != settings.USER_ID:
id += self.user.nickname
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id = '%s:%s' % (id, self.name)
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return id
@property
def find_id(self):
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id = ''
if self.user_id != settings.USER_ID:
id += self.user_id
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id = '%s:%s' % (id, self.id)
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return id
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def __repr__(self):
return self.public_id.encode('utf-8')
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def items_count(self):
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key = 'list:' + self.public_id
value = state.cache.get(key)
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if value is None:
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from item.models import Item
if self._query:
data = self._query
value = Parser(Item).find({'query': data}).count()
else:
value = len(self.items)
state.cache.set(key, value)
return value
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def json(self):
r = {
'id': self.public_id,
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'user': self.user.name,
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'name': self.name,
'index': self.index_,
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'items': self.items_count(),
'type': self.type
}
if self.type == 'smart':
r['query'] = self._query
return r
def save(self):
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state.db.session.add(self)
state.db.session.commit()