pandora/pandora/annotation/models.py

278 lines
10 KiB
Python

# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
from __future__ import division, with_statement
import re
import unicodedata
from django.db import models, transaction
from django.db.models import Q
from django.contrib.auth.models import User
from django.conf import settings
from django.db.models.signals import pre_delete
import ox
from clip.models import Clip
from entity.models import Entity
from changelog.models import Changelog
from item.utils import sort_string, get_by_key
import managers
import utils
from tasks import update_matches
def get_super_matches(obj, model):
super_matches = []
q = Q(name_find__contains=" " + obj.name)|Q(name_find__contains="|%s"%obj.name)
for name in obj.alternativeNames:
q = q|Q(name_find__contains=" " + name)|Q(name_find__contains="|%s"%name)
for p in model.objects.filter(q).exclude(id=obj.id):
for othername in [p.name] + list(p.alternativeNames):
for name in [obj.name] + list(obj.alternativeNames):
if name in othername:
super_matches.append(othername)
return super_matches
def get_matches(obj, model, layer_type, qs=None):
super_matches = obj.get_super_matches()
exact = [l['id'] for l in filter(lambda l: l['type'] == layer_type, settings.CONFIG['layers'])]
if exact:
q = Q(value__iexact=obj.name)
for name in obj.alternativeNames:
q = q|Q(value__iexact=name)
f = q&Q(layer__in=exact)
else:
f = None
has_type = 'has%ss' % layer_type.capitalize()
contains = [l['id'] for l in filter(lambda l: l.get(has_type), settings.CONFIG['layers'])]
if contains:
name = ox.decode_html(obj.name)
name = unicodedata.normalize('NFKD', name).lower()
q = Q(findvalue__icontains=" " + name)|Q(findvalue__istartswith=name)
for name in obj.alternativeNames:
name = ox.decode_html(name)
name = unicodedata.normalize('NFKD', name).lower()
q = q|Q(findvalue__icontains=" " + name)|Q(findvalue__istartswith=name)
contains_matches = q&Q(layer__in=contains)
if f:
f = contains_matches | f
else:
f = contains_matches
matches = []
if not qs:
qs = Annotation.objects.all()
for a in qs.filter(f):
if a.findvalue:
value = a.findvalue.lower()
for name in super_matches:
name = ox.decode_html(name)
value = value.replace(name.lower(), '')
for name in [obj.name] + list(obj.alternativeNames):
name = name.lower()
name = ox.decode_html(name)
name = unicodedata.normalize('NFKD', name).lower()
if name in value and (exact or re.compile('((^|\s)%s([\.,;:!?\'"\)\]\-\/\s]|$))'%re.escape(name)).findall(value)):
matches.append(a.id)
break
if not matches:
matches = [-1]
return Annotation.objects.filter(id__in=matches)
class Annotation(models.Model):
objects = managers.AnnotationManager()
#FIXME: here having a item,start index would be good
created = models.DateTimeField(auto_now_add=True)
modified = models.DateTimeField(auto_now=True)
user = models.ForeignKey(User)
item = models.ForeignKey('item.Item', related_name='annotations')
clip = models.ForeignKey('clip.Clip', null=True, related_name='annotations')
public_id = models.CharField(max_length=128, unique=True, null=True)
#seconds
start = models.FloatField(default=-1, db_index=True)
end = models.FloatField(default=-1, db_index=True)
layer = models.CharField(max_length=255, db_index=True)
value = models.TextField()
findvalue = models.TextField(null=True)
sortvalue = models.CharField(max_length=1000, null=True, blank=True, db_index=True)
languages = models.CharField(max_length=255, null=True, blank=True)
def editable(self, user):
if user.is_authenticated():
if user.get_profile().capability('canEditAnnotations') or \
self.user == user or \
user.groups.filter(id__in=self.item.groups.all()).count() > 0:
return True
return False
@classmethod
def get(cls, id):
return cls.objects.get(public_id=id)
def set_public_id(self):
if self.id:
public_id = Annotation.objects.filter(item=self.item, id__lt=self.id).count() + 1
if public_id > 1:
previous = Annotation.objects.filter(item=self.item,
id__lt=self.id).order_by('-id')[0]
if not previous.public_id:
previous.set_public_id()
public_id = ox.fromAZ(previous.public_id.split('/')[-1]) + 1
self.public_id = "%s/%s" % (self.item.public_id, ox.toAZ(public_id))
Annotation.objects.filter(id=self.id).update(public_id=self.public_id)
@classmethod
def public_layers(self):
layers = []
for layer in settings.CONFIG['layers']:
if not layer.get('private', False):
layers.append(layer['id'])
return layers
def get_layer(self):
for layer in settings.CONFIG['layers']:
if layer['id'] == self.layer:
return layer
return {}
def save(self, *args, **kwargs):
set_public_id = not self.id or not self.public_id
layer = self.get_layer()
if self.value:
self.value = utils.cleanup_value(self.value, layer['type'])
self.findvalue = ox.decode_html(ox.strip_tags(re.sub('<br */?>\n?', ' ', self.value))).replace('\n', ' ')
self.findvalue = unicodedata.normalize('NFKD', self.findvalue).lower()
sortvalue = sort_string(self.findvalue)
while sortvalue and not unicodedata.category(sortvalue[0])[0] in ('L', 'N'):
sortvalue = sortvalue[1:]
if sortvalue:
self.sortvalue = sortvalue[:900]
else:
self.sortvalue = None
self.languages = ','.join(re.compile('lang="(.*?)"').findall(self.value))
if not self.languages:
self.languages = None
else:
self.findvalue = None
self.sortvalue = None
self.languages = None
with transaction.commit_on_success():
if not self.clip or self.start != self.clip.start or self.end != self.clip.end:
self.clip, created = Clip.get_or_create(self.item, self.start, self.end)
super(Annotation, self).save(*args, **kwargs)
if set_public_id:
self.set_public_id()
if self.clip:
Clip.objects.filter(**{
'id': self.clip.id,
self.layer: False
}).update(**{self.layer: True})
#update clip.findvalue
self.clip.save()
#editAnnotations needs to be in snyc
if layer.get('type') == 'place' or layer.get('hasPlaces'):
update_matches(self.id, 'place')
if layer.get('type') == 'event' or layer.get('hasEvents'):
update_matches(self.id, 'event')
def delete(self, *args, **kwargs):
with transaction.commit_on_success():
super(Annotation, self).delete(*args, **kwargs)
if self.clip and self.clip.annotations.count() == 0:
self.clip.delete()
self.item.update_find()
self.item.update_sort()
self.item.update_facets()
def cleanup_undefined_relations(self):
layer = self.get_layer()
if layer.get('type') == 'place':
for p in self.places.filter(defined=False):
if p.annotations.exclude(id=self.id).count() == 0:
p.delete()
elif layer.get('type') == 'event':
for e in self.events.filter(defined=False):
if e.annotations.exclude(id=self.id).count() == 0:
e.delete()
def json(self, layer=False, keys=None, user=None):
j = {
'user': self.user.username,
}
for key in ('id', 'in', 'out', 'value', 'created', 'modified'):
j[key] = getattr(self, {
'hue': 'clip__hue',
'id': 'public_id',
'in': 'start',
'lightness': 'clip__lightness',
'out': 'end',
'saturation': 'clip__saturation',
'volume': 'clip__volume',
}.get(key, key))
j['duration'] = abs(j['out'] - j['in'])
if user:
j['editable'] = self.editable(user)
if self.languages:
j['languages'] = self.languages.split(',')
l = self.get_layer()
if l['type'] == 'entity':
try:
entity = Entity.get(self.value)
j['entity'] = entity.json(user=user)
j['value'] = entity.name
except:
j['entity'] = {}
elif l['type'] == 'event':
qs = self.events.all()
if qs.count() > 0:
j['event'] = qs[0].json(user=user)
else:
j['event'] = {}
elif l['type'] == 'place':
qs = self.places.all()
if qs.count() > 0:
j['place'] = qs[0].json(user=user)
else:
j['place'] = {}
if layer or (keys and 'layer' in keys):
j['layer'] = self.layer
if keys and 'item' in keys:
j['item'] = self.item.public_id
if keys:
_j = {}
for key in keys:
if key in j:
_j[key] = j[key]
j = _j
if 'videoRatio' in keys:
streams = self.item.streams()
if streams:
j['videoRatio'] = streams[0].aspect_ratio
subtitles = get_by_key(settings.CONFIG['layers'], 'isSubtitles', True)
if subtitles:
if 'id' in j and self.layer == subtitles['id'] and not self.value:
del j['id']
return j
def log(self):
c = Changelog(type='annotation')
c.value = self.json(layer=True)
c.save()
def __unicode__(self):
return u"%s %s-%s" %(self.public_id, self.start, self.end)
def cleanup_related(sender, **kwargs):
kwargs['instance'].cleanup_undefined_relations()
pre_delete.connect(cleanup_related, sender=Annotation)