openmedialibrary/oml/item/models.py
2014-05-14 11:57:11 +02:00

441 lines
14 KiB
Python

# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
import os
import re
import base64
import json
import hashlib
from datetime import datetime
from StringIO import StringIO
import Image
import ox
import settings
from settings import db, config
from user.models import User
from person import get_sort_name
import media
import meta
import state
import utils
from oxflask.db import MutableDict
from covers import covers
from changelog import Changelog
from websocket import trigger_event
class Work(db.Model):
created = db.Column(db.DateTime())
modified = db.Column(db.DateTime())
id = db.Column(db.String(32), primary_key=True)
meta = db.Column(MutableDict.as_mutable(db.PickleType(pickler=json)))
def __repr__(self):
return self.id
def __init__(self, id):
self.id = id
self.created = datetime.now()
self.modified = datetime.now()
class Edition(db.Model):
created = db.Column(db.DateTime())
modified = db.Column(db.DateTime())
id = db.Column(db.String(32), primary_key=True)
meta = db.Column(MutableDict.as_mutable(db.PickleType(pickler=json)))
work_id = db.Column(db.String(32), db.ForeignKey('work.id'))
work = db.relationship('Work', backref=db.backref('editions', lazy='dynamic'))
def __repr__(self):
return self.id
def __init__(self, id):
self.id = id
self.created = datetime.now()
self.modified = datetime.now()
user_items = db.Table('useritem',
db.Column('user_id', db.String(43), db.ForeignKey('user.id')),
db.Column('item_id', db.String(32), db.ForeignKey('item.id'))
)
class Item(db.Model):
created = db.Column(db.DateTime())
modified = db.Column(db.DateTime())
id = db.Column(db.String(32), primary_key=True)
info = db.Column(MutableDict.as_mutable(db.PickleType(pickler=json)))
meta = db.Column(MutableDict.as_mutable(db.PickleType(pickler=json)))
added = db.Column(db.DateTime()) # added to local library
accessed = db.Column(db.DateTime())
timesaccessed = db.Column(db.Integer())
transferadded = db.Column(db.DateTime())
transferprogress = db.Column(db.Float())
users = db.relationship('User', secondary=user_items,
backref=db.backref('items', lazy='dynamic'))
edition_id = db.Column(db.String(32), db.ForeignKey('edition.id'))
edition = db.relationship('Edition', backref=db.backref('items', lazy='dynamic'))
work_id = db.Column(db.String(32), db.ForeignKey('work.id'))
work = db.relationship('Work', backref=db.backref('items', lazy='dynamic'))
@property
def timestamp(self):
return self.modified.strftime('%s')
def __repr__(self):
return self.id
def __init__(self, id):
if isinstance(id, list):
id = base64.b32encode(hashlib.sha1(''.join(id)).digest())
self.id = id
self.created = datetime.now()
self.modified = datetime.now()
self.info = {}
self.meta = {}
@classmethod
def get(cls, id):
if isinstance(id, list):
id = base64.b32encode(hashlib.sha1(''.join(id)).digest())
return cls.query.filter_by(id=id).first()
@classmethod
def get_or_create(cls, id, info=None):
if isinstance(id, list):
id = base64.b32encode(hashlib.sha1(''.join(id)).digest())
item = cls.query.filter_by(id=id).first()
if not item:
item = cls(id=id)
if info:
item.info = info
db.session.add(item)
db.session.commit()
return item
def json(self, keys=None):
j = {}
j['id'] = self.id
j['created'] = self.created
j['modified'] = self.modified
j['timesaccessed'] = self.timesaccessed
j['accessed'] = self.accessed
j['added'] = self.added
j['transferadded'] = self.transferadded
j['transferprogress'] = self.transferprogress
j['users'] = map(str, list(self.users))
if self.info:
j.update(self.info)
if self.meta:
j.update(self.meta)
for key in self.id_keys + ['mainid']:
if key not in self.meta and key in j:
del j[key]
'''
if self.work_id:
j['work'] = {
'olid': self.work_id
}
j['work'].update(self.work.meta)
'''
if keys:
for k in j.keys():
if k not in keys:
del j[k]
return j
def get_path(self):
f = self.files.first()
prefs = settings.preferences
prefix = os.path.join(os.path.expanduser(prefs['libraryPath']), 'Books/')
return os.path.join(prefix, f.path) if f else None
def update_sort(self):
for key in config['itemKeys']:
if key.get('sort'):
value = self.json().get(key['id'], None)
sort_type = key.get('sortType', key['type'])
if value:
if sort_type == 'integer':
value = int(value)
elif sort_type == 'float':
value = float(value)
elif sort_type == 'date':
pass
elif sort_type == 'name':
if not isinstance(value, list):
value = [value]
value = map(get_sort_name, value)
value = ox.sort_string(u'\n'.join(value))
elif sort_type == 'title':
value = utils.sort_title(value).lower()
else:
if isinstance(value, list):
value = u'\n'.join(value)
if value:
value = unicode(value)
value = ox.sort_string(value).lower()
setattr(self, 'sort_%s' % key['id'], value)
def update_find(self):
def add(k, v):
f = Find(item_id=self.id, key=k)
f.findvalue = v.lower().strip()
f.value = v
db.session.add(f)
for key in config['itemKeys']:
if key.get('find') or key.get('filter'):
value = self.json().get(key['id'], None)
if key.get('filterMap') and value:
value = re.compile(key.get('filterMap')).findall(value)
if value: value = value[0]
if value:
Find.query.filter_by(item_id=self.id, key=key['id']).delete()
if not isinstance(value, list):
value = [value]
for v in value:
add(key['id'], v)
else:
f = Find.get(self.id, key['id'])
if f:
db.session.delete(f)
def update_lists(self):
Find.query.filter_by(item_id=self.id, key='list').delete()
for p in self.users:
f = Find()
f.item_id = self.id
f.key = 'list'
if p.id == settings.USER_ID:
f.value = ':'
else:
f.value = '%s:' % p.id
db.session.add(f)
for l in self.lists:
f = Find()
f.item_id = self.id
f.key = 'list'
f.value = l.find_id
db.session.add(f)
def update(self):
users = map(str, list(self.users))
self.meta['mediastate'] = 'available' # available, unavailable, transferring
if self.transferadded and self.transferprogress < 1:
self.meta['mediastate'] = 'transferring'
else:
self.meta['mediastate'] = 'available' if settings.USER_ID in users else 'unavailable'
self.update_sort()
self.update_find()
self.update_lists()
self.modified = datetime.now()
self.save()
def save(self):
db.session.add(self)
db.session.commit()
def update_mainid(self, key, id):
record = {}
if id:
self.meta[key] = id
self.meta['mainid'] = key
record[key] = id
else:
if key in self.meta:
del self.meta[key]
if 'mainid' in self.meta:
del self.meta['mainid']
record[key] = ''
for k in self.id_keys:
if k != key:
if k in self.meta:
del self.meta[k]
print 'mainid', 'mainid' in self.meta, self.meta.get('mainid')
print 'key', key, self.meta.get(key)
# get metadata from external resources
self.scrape()
self.update()
self.update_cover()
db.session.add(self)
db.session.commit()
user = User.get_or_create(settings.USER_ID)
if user in self.users:
Changelog.record(user, 'edititem', self.id, record)
def extract_cover(self):
path = self.get_path()
if not path:
return getattr(media, self.meta['extensions']).cover(path)
def update_cover(self):
cover = None
if 'cover' in self.meta:
cover = ox.cache.read_url(self.meta['cover'])
#covers[self.id] = requests.get(self.meta['cover']).content
if cover:
covers[self.id] = cover
path = self.get_path()
if not cover and path:
cover = self.extract_cover()
if cover:
covers[self.id] = cover
if cover:
img = Image.open(StringIO(cover))
self.meta['coverRatio'] = img.size[0]/img.size[1]
for p in (':128', ':256'):
del covers['%s%s' % (self.id, p)]
return cover
def scrape(self):
mainid = self.meta.get('mainid')
print 'scrape', mainid, self.meta.get(mainid)
if mainid:
m = meta.lookup(mainid, self.meta[mainid])
self.meta.update(m)
else:
print 'FIX UPDATE', mainid
self.update()
def queue_download(self):
u = state.user()
if not u in self.users:
self.transferprogress = 0
self.transferadded = datetime.now()
self.users.append(u)
def save_file(self, content):
u = state.user()
f = File.get(self.id)
content_id = media.get_id(data=content)
if content_id != self.id:
print 'INVALID CONTENT', self.id, 'vs', content_id
return False
if not f:
path = 'Downloads/%s.%s' % (self.id, self.info['extension'])
f = File.get_or_create(self.id, self.info, path=path)
path = self.get_path()
if not os.path.exists(path):
ox.makedirs(os.path.dirname(path))
with open(path, 'wb') as fd:
fd.write(content)
if u not in self.users:
self.users.append(u)
self.transferprogress = 1
self.added = datetime.now()
Changelog.record(u, 'additem', self.id, self.info)
self.update()
trigger_event('transfer', {
'id': self.id, 'progress': 1
})
return True
else:
print 'TRIED TO SAVE EXISTING FILE!!!'
self.transferprogress = 1
self.update()
return False
for key in config['itemKeys']:
if key.get('sort'):
sort_type = key.get('sortType', key['type'])
if sort_type == 'integer':
col = db.Column(db.BigInteger(), index=True)
elif sort_type == 'float':
col = db.Column(db.Float(), index=True)
elif sort_type == 'date':
col = db.Column(db.DateTime(), index=True)
else:
col = db.Column(db.String(1000), index=True)
setattr(Item, 'sort_%s' % key['id'], col)
Item.id_keys = ['isbn10', 'isbn13', 'lccn', 'olid', 'oclc']
Item.item_keys = config['itemKeys']
Item.filter_keys = [k['id'] for k in config['itemKeys'] if k.get('filter')]
class Find(db.Model):
id = db.Column(db.Integer(), primary_key=True)
item_id = db.Column(db.String(32), db.ForeignKey('item.id'))
item = db.relationship('Item', backref=db.backref('find', lazy='dynamic'))
key = db.Column(db.String(200), index=True)
value = db.Column(db.Text())
findvalue = db.Column(db.Text())
def __repr__(self):
return (u'%s=%s' % (self.key, self.findvalue)).encode('utf-8')
@classmethod
def get(cls, item, key):
return cls.query.filter_by(item_id=item, key=key).first()
@classmethod
def get_or_create(cls, item, key):
f = cls.get(item, key)
if not f:
f = cls(item_id=item, key=key)
db.session.add(f)
db.session.commit()
return f
class File(db.Model):
created = db.Column(db.DateTime())
modified = db.Column(db.DateTime())
sha1 = db.Column(db.String(32), primary_key=True)
path = db.Column(db.String(2048))
info = db.Column(MutableDict.as_mutable(db.PickleType(pickler=json)))
item_id = db.Column(db.String(32), db.ForeignKey('item.id'))
item = db.relationship('Item', backref=db.backref('files', lazy='dynamic'))
@classmethod
def get(cls, sha1):
return cls.query.filter_by(sha1=sha1).first()
@classmethod
def get_or_create(cls, sha1, info=None, path=None):
f = cls.get(sha1)
if not f:
f = cls(sha1=sha1)
if info:
f.info = info
if path:
f.path = path
f.item_id = Item.get_or_create(id=sha1, info=info).id
db.session.add(f)
db.session.commit()
return f
def __repr__(self):
return self.sha1
def __init__(self, sha1):
self.sha1 = sha1
self.created = datetime.now()
self.modified = datetime.now()