cablegates/pandora/item/views.py
2011-04-08 10:20:59 +02:00

557 lines
19 KiB
Python

# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
from __future__ import division
import os.path
from datetime import datetime
from django.db.models import Count, Sum, Max
from django.http import HttpResponse, Http404
from django.shortcuts import get_object_or_404, redirect
from django.conf import settings
from ox.utils import json
from ox.django.decorators import login_required_json
from ox.django.shortcuts import render_to_json_response, get_object_or_404_json, json_response
from ox.django.http import HttpFileResponse
import ox
import models
import utils
import tasks
from archive.models import File
from archive import extract
from api.actions import actions
def _order_query(qs, sort, prefix='sort__'):
order_by = []
if len(sort) == 1:
if sort[0]['key'] == 'title':
sort.append({'operator': '-', 'key': 'year'})
sort.append({'operator': '+', 'key': 'director'})
elif sort[0]['key'] == 'director':
sort.append({'operator': '-', 'key': 'year'})
sort.append({'operator': '+', 'key': 'title'})
elif sort[0]['key'] == 'year':
sort.append({'operator': '+', 'key': 'director'})
sort.append({'operator': '+', 'key': 'title'})
elif not sort[0]['key'] in ('value', 'value_sort'):
sort.append({'operator': '+', 'key': 'director'})
sort.append({'operator': '-', 'key': 'year'})
sort.append({'operator': '+', 'key': 'title'})
for e in sort:
operator = e['operator']
if operator != '-':
operator = ''
key = {
'id': 'itemId',
'accessed': 'accessed__access',
'viewed': 'accessed__access',
}.get(e['key'], e['key'])
if key not in ('accessed__access', 'accessed__accessed'):
key = "%s%s" % (prefix, key)
order = '%s%s' % (operator, key)
order_by.append(order)
if order_by:
qs = qs.order_by(*order_by, nulls_last=True)
return qs
def _order_by_group(query):
if 'sort' in query:
if len(query['sort']) == 1 and query['sort'][0]['key'] == 'items':
if query['group'] == "year":
order_by = query['sort'][0]['operator'] == '-' and 'items' or '-items'
else:
order_by = query['sort'][0]['operator'] == '-' and '-items' or 'items'
if query['group'] != "keyword":
order_by = (order_by, 'value_sort')
else:
order_by = (order_by,)
else:
order_by = query['sort'][0]['operator'] == '-' and '-value_sort' or 'value_sort'
order_by = (order_by, 'items')
else:
order_by = ('-value_sort', 'items')
return order_by
def parse_query(data, user):
query = {}
query['range'] = [0, 100]
query['sort'] = [{'key':'title', 'operator':'+'}]
for key in ('sort', 'keys', 'group', 'range', 'ids'):
if key in data:
query[key] = data[key]
query['qs'] = models.Item.objects.find(data, user)
#group by only allows sorting by name or number of itmes
return query
def find(request):
'''
param data {
'query': query,
'sort': array,
'range': array
}
query: query object, more on query syntax at
https://wiki.0x2620.org/wiki/pandora/QuerySyntax
sort: array of key, operator dics
[
{
key: "year",
operator: "-"
},
{
key: "director",
operator: ""
}
]
range: result range, array [from, to]
keys: array of keys to return
group: group elements by, country, genre, director...
with keys, items is list of dicts with requested properties:
return {'status': {'code': int, 'text': string},
'data': {items: array}}
Groups
param data {
'query': query,
'key': string,
'group': string,
'range': array
}
query: query object, more on query syntax at
https://wiki.0x2620.org/wiki/pandora/QuerySyntax
range: result range, array [from, to]
keys: array of keys to return
group: group elements by, country, genre, director...
possible values for keys: name, items
with keys
items contains list of {'name': string, 'items': int}:
return {'status': {'code': int, 'text': string},
'data': {items: array}}
without keys: return number of items in given query
return {'status': {'code': int, 'text': string},
'data': {items: int}}
Positions
param data {
'query': query,
'ids': []
}
query: query object, more on query syntax at
https://wiki.0x2620.org/wiki/pandora/QuerySyntax
ids: ids of items for which positions are required
return {
status: {...},
data: {
positions: {
id: position
}
}
}
'''
data = json.loads(request.POST['data'])
if settings.JSON_DEBUG:
print json.dumps(data, indent=2)
query = parse_query(data, request.user)
response = json_response({})
if 'group' in query:
response['data']['items'] = []
items = 'items'
item_qs = query['qs']
order_by = _order_by_group(query)
qs = models.Facet.objects.filter(key=query['group']).filter(item__id__in=item_qs)
qs = qs.values('value').annotate(items=Count('id')).order_by(*order_by)
if 'ids' in query:
response['data']['positions'] = {}
ids = [j['value'] for j in qs]
response['data']['positions'] = utils.get_positions(ids, query['ids'])
elif 'range' in data:
qs = qs[query['range'][0]:query['range'][1]]
response['data']['items'] = [{'name': i['value'], 'items': i[items]} for i in qs]
else:
response['data']['items'] = qs.count()
elif 'ids' in query:
qs = _order_query(query['qs'], query['sort'])
response['data']['positions'] = {}
ids = [j['itemId'] for j in qs.values('itemId')]
response['data']['positions'] = utils.get_positions(ids, query['ids'])
elif 'keys' in query:
response['data']['items'] = []
qs = _order_query(query['qs'], query['sort'])
_p = query['keys']
def only_p_sums(m):
r = {}
for p in _p:
if p == 'viewed' and request.user.is_authenticated():
value = m.accessed.filter(user=request.user).annotate(v=Max('access'))
r[p] = value.exists() and value[0].v or None
elif p == 'accessed':
r[p] = m.a
elif p == 'popularity':
r[p] = m.sort.popularity
else:
r[p] = m.json.get(p, '')
return r
def only_p(m):
r = {}
if m:
m = json.loads(m)
for p in _p:
r[p] = m.get(p, '')
return r
qs = qs[query['range'][0]:query['range'][1]]
#response['data']['items'] = [m.get_json(_p) for m in qs]
if 'popularity' in _p:
qs = qs.annotate(popularity=Sum('accessed__accessed'))
if 'accessed' in _p:
qs = qs.annotate(a=Max('accessed__access'))
if 'viewed' in _p or 'popularity' in _p or 'accessed' in _p:
response['data']['items'] = [only_p_sums(m) for m in qs]
else:
response['data']['items'] = [only_p(m['json']) for m in qs.values('json')]
else: # otherwise stats
items = query['qs']
files = File.objects.filter(item__in=items).filter(size__gt=0)
r = files.aggregate(
Sum('duration'),
Sum('pixels'),
Sum('size')
)
response['data']['duration'] = r['duration__sum']
response['data']['files'] = files.count()
response['data']['items'] = items.count()
response['data']['pixels'] = r['pixels__sum']
response['data']['runtime'] = items.aggregate(Sum('sort__runtime'))['sort__runtime__sum']
response['data']['size'] = r['size__sum']
for key in ('runtime', 'duration', 'pixels', 'size'):
if response['data'][key] == None:
response['data'][key] = 0
return render_to_json_response(response)
actions.register(find)
def autocomplete(request):
'''
param data
key
value
operator '', '^', '$'
range
return
'''
data = json.loads(request.POST['data'])
if not 'range' in data:
data['range'] = [0, 10]
op = data.get('operator', '')
site_config = models.site_config()
key = site_config['keys'][data['key']]
order_by = key.get('autocompleteSortKey', False)
if order_by:
order_by = '-sort__%s' % order_by
else:
order_by = '-items'
sort_type = key.get('sort', key.get('type', 'string'))
if sort_type == 'title':
qs = parse_query({'query': data.get('query', {})}, request.user)['qs']
if data['value']:
if op == '':
qs = qs.filter(find__key=data['key'], find__value__icontains=data['value'])
elif op == '^':
qs = qs.filter(find__key=data['key'], find__value__istartswith=data['value'])
elif op == '$':
qs = qs.filter(find__key=data['key'], find__value__iendswith=data['value'])
qs = qs.order_by(order_by, nulls_last=True)
qs = qs[data['range'][0]:data['range'][1]]
response = json_response({})
response['data']['items'] = [i.get(data['key']) for i in qs]
else:
qs = models.Facet.objects.filter(key=data['key'])
if data['value']:
if op == '':
qs = qs.filter(value__icontains=data['value'])
elif op == '^':
qs = qs.filter(value__istartswith=data['value'])
elif op == '$':
qs = qs.filter(value__iendswith=data['value'])
qs = qs.values('value').annotate(items=Count('id'))
qs = qs.order_by(order_by)
qs = qs[data['range'][0]:data['range'][1]]
response = json_response({})
response['data']['items'] = [i['value'] for i in qs]
return render_to_json_response(response)
actions.register(autocomplete)
def getItem(request):
'''
param data
string id
return item array
'''
response = json_response({})
itemId = json.loads(request.POST['data'])
item = get_object_or_404_json(models.Item, itemId=itemId)
if item.access(request.user):
info = item.get_json()
info['stream'] = item.get_stream()
info['layers'] = item.get_layers(request.user)
response['data']['item'] = info
else:
response = json_response(status=403, text='permission denied')
return render_to_json_response(response)
actions.register(getItem)
@login_required_json
def editItem(request):
'''
param data {
id: string,
key: value,..
}
return {
status: {'code': int, 'text': string},
data: {}
}
'''
data = json.loads(request.POST['data'])
item = get_object_or_404_json(models.Item, itemId=data['id'])
if item.editable(request.user):
response = json_response(status=200, text='ok')
item.edit(data)
else:
response = json_response(status=403, text='permissino denied')
return render_to_json_response(response)
actions.register(editItem, cache=False)
@login_required_json
def removeItem(request):
'''
param data
string id
return {'status': {'code': int, 'text': string}}
'''
response = json_response({})
itemId = json.loads(request.POST['data'])
item = get_object_or_404_json(models.Item, itemId=itemId)
if item.editable(request.user):
response = json_response(status=501, text='not implemented')
else:
response = json_response(status=403, text='permission denied')
return render_to_json_response(response)
actions.register(removeItem, cache=False)
'''
Poster API
'''
def parse(request): #parse path and return info
'''
param data {
path: string
}
return {
status: {'code': int, 'text': string},
data: {
imdb: string
}
}
'''
path = json.loads(request.POST['data'])['path']
response = json_response(utils.parse_path(path))
return render_to_json_response(response)
actions.register(parse)
def setPosterFrame(request): #parse path and return info
'''
param data {
id: itemId,
position: float
}
return {
status: {'code': int, 'text': string},
data: {
}
}
'''
data = json.loads(request.POST['data'])
item = get_object_or_404_json(models.Item, itemId=data['id'])
if item.editable(request.user):
#FIXME: some things need to be updated after changing this
item.poster_frame = data['position']
item.save()
tasks.update_poster.delay(item.itemId)
response = json_response()
else:
response = json_response(status=403, text='permissino denied')
return render_to_json_response(response)
actions.register(setPosterFrame, cache=False)
def setPoster(request): #parse path and return info
'''
param data {
id: itemId,
url: string
}
return {
status: {'code': int, 'text': string},
data: {
poster: {url,width,height}
}
}
'''
data = json.loads(request.POST['data'])
item = get_object_or_404_json(models.Item, itemId=data['id'])
if item.editable(request.user):
valid_urls = [p.url for p in item.poster_urls.all()]
if data['url'] in valid_urls:
item.poster_url = data['url']
if item.poster:
item.poster.delete()
item.save()
tasks.update_poster.delay(item.itemId)
response = json_response()
response['data']['poster'] = item.get_poster()
else:
response = json_response(status=403, text='invalid poster url')
else:
response = json_response(status=403, text='permission denied')
return render_to_json_response(response)
actions.register(setPoster, cache=False)
def getImdbId(request):
'''
param data {
title: string,
director: string,
year: string
}
return {
status: {'code': int, 'text': string},
data: {
imdbId:string
}
}
'''
data = json.loads(request.POST['data'])
imdbId = ox.web.imdb.getImdbId(data['title'], data['director'], timeout=-1)
if imdbId:
response = json_response({'imdbId': imdbId})
else:
response = json_response(status=404, text='not found')
return render_to_json_response(response)
actions.register(getImdbId)
'''
media delivery
'''
def frame(request, id, position, size):
item = get_object_or_404(models.Item, itemId=id)
position = float(position.replace(',', '.'))
frame = item.frame(position, int(size))
if not frame:
raise Http404
return HttpFileResponse(frame, content_type='image/jpeg')
def image_to_response(item, image, size=None):
if size:
size = int(size)
path = image.path.replace('.jpg', '.%d.jpg'%size)
if not os.path.exists(path):
image_size = max(image.width, image.height)
if size > image_size:
return redirect('/%s/icon.jpg' % item.itemId)
extract.resize_image(image.path, path, size=size)
else:
path = image.path
return HttpFileResponse(path, content_type='image/jpeg')
def poster(request, id, size=None):
item = get_object_or_404(models.Item, itemId=id)
if size == 'large':
size = None
if item.poster:
return image_to_response(item, item.poster, size)
else:
if not size:
size='large'
poster_path = os.path.join(settings.STATIC_ROOT, 'png/posterDark.48.png')
return HttpFileResponse(poster_path, content_type='image/jpeg')
def icon(request, id, size=None):
item = get_object_or_404(models.Item, itemId=id)
if item.icon:
return image_to_response(item, item.icon, size)
else:
raise Http404
def timeline(request, id, timeline, size, position):
item = get_object_or_404(models.Item, itemId=id)
if timeline == 'strip':
timeline = '%s.%s.%04d.png' %(item.timeline_prefix[:-8] + 'strip', size, int(position))
else:
timeline = '%s.%s.%04d.png' %(item.timeline_prefix, size, int(position))
return HttpFileResponse(timeline, content_type='image/png')
def timeline_overview(request, id, size):
item = get_object_or_404(models.Item, itemId=id)
timeline = '%s.%s.png' %(item.timeline_prefix, size)
return HttpFileResponse(timeline, content_type='image/png')
def video(request, id, profile):
item = get_object_or_404(models.Item, itemId=id)
stream = get_object_or_404(item.streams, profile=profile)
path = stream.video.path
content_type = path.endswith('.mp4') and 'video/mp4' or 'video/webm'
#server side cutting
t = request.GET.get('t', None)
if t:
t = map(float, t.split(','))
ext = os.path.splitext(profile)[1]
if len(t) == 2 and t[1] > t[0] and stream.info['duration']>=t[1]:
response = HttpResponse(extract.chop(path, t[0], t[1]), content_type=content_type)
filename = "Clip of %s - %s-%s - %s %s%s" % (
item.get('title'),
ox.formatDuration(t[0] * 1000),
ox.formatDuration(t[1] * 1000),
settings.SITENAME,
item.itemId,
ext
)
response['Content-Disposition'] = 'attachment; filename="%s"' % filename
return response
else:
filename = "%s - %s %s%s" % (
item.get('title'),
settings.SITENAME,
item.itemId,
ext
)
response = HttpFileResponse(path, content_type=content_type)
response['Content-Disposition'] = 'attachment; filename="%s"' % filename
return response
return HttpFileResponse(path, content_type=content_type)