pandora/pandora/itemlist/views.py

395 lines
12 KiB
Python

# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
from __future__ import division
import os
import re
from django.db.models import Max, Sum
from django.db import transaction
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 models
from ox.django.api import actions
from item import utils
from item.models import Item
from user.tasks import update_numberoflists
def get_list_or_404_json(id):
id = id.split(':')
username = id[0]
listname = ":".join(id[1:])
return get_object_or_404_json(models.List, user__username=username, name=listname)
def _order_query(qs, sort):
order_by = []
for e in sort:
operator = e['operator']
if operator != '-':
operator = ''
key = {
'subscribed': 'subscribed_users',
'items': 'numberofitems'
}.get(e['key'], e['key'])
order = '%s%s' % (operator, key)
order_by.append(order)
if key == 'subscribers':
qs = qs.annotate(subscribers=Sum('subscribed_users'))
if order_by:
qs = qs.order_by(*order_by)
qs = qs.distinct()
return qs
def parse_query(data, user):
query = {}
query['range'] = [0, 100]
query['sort'] = [{'key':'user', 'operator':'+'}, {'key':'name', 'operator':'+'}]
for key in ('keys', 'group', 'list', 'range', 'position', 'positions', 'sort'):
if key in data:
query[key] = data[key]
query['qs'] = models.List.objects.find(data, user)
return query
def findLists(request):
'''
takes {
query: {
conditions: [
{
key: 'user',
value: 'something',
operator: '='
}
]
operator: ","
},
sort: [{key: 'name', operator: '+'}],
range: [0, 100]
keys: []
}
possible query keys:
name, user, featured, subscribed
possible keys:
name, user, featured, subscribed, query
}
returns {
items: [{name: string, user: string, featured: bool, public...}]
}
'''
data = json.loads(request.POST['data'])
query = parse_query(data, request.user)
#order
is_section_request = query['sort'] == [{u'operator': u'+', u'key': u'position'}]
def is_featured_condition(x):
return x['key'] == 'status' and \
x['value'] == 'featured' and \
x['operator'] in ('=', '==')
is_featured = len(filter(is_featured_condition, data['query'].get('conditions', []))) > 0
if is_section_request:
qs = query['qs']
if not is_featured and not request.user.is_anonymous():
qs = qs.filter(position__in=models.Position.objects.filter(user=request.user))
qs = qs.order_by('position__position')
else:
qs = _order_query(query['qs'], query['sort'])
response = json_response()
if 'keys' in data:
qs = qs[query['range'][0]:query['range'][1]]
response['data']['items'] = [l.json(data['keys'], request.user) for l in qs]
elif 'position' in data:
#FIXME: actually implement position requests
response['data']['position'] = 0
elif 'positions' in data:
ids = [i.get_id() for i in qs]
response['data']['positions'] = utils.get_positions(ids, query['positions'])
else:
response['data']['items'] = qs.count()
return render_to_json_response(response)
actions.register(findLists)
@login_required_json
def addListItems(request):
'''
takes {
list: listId,
items: [itemId],
query: ...
}
returns {
}
'''
data = json.loads(request.POST['data'])
list = get_list_or_404_json(data['list'])
if 'items' in data:
if list.editable(request.user):
with transaction.commit_on_success():
for item in Item.objects.filter(itemId__in=data['items']):
list.add(item)
response = json_response(status=200, text='items added')
else:
response = json_response(status=403, text='not allowed')
elif 'query' in data:
response = json_response(status=501, text='not implemented')
else:
response = json_response(status=501, text='not implemented')
return render_to_json_response(response)
actions.register(addListItems, cache=False)
@login_required_json
def removeListItems(request):
'''
takes {
list: listId,
items: [itemId],
quert: ...
}
returns {
}
'''
data = json.loads(request.POST['data'])
list = get_list_or_404_json(data['list'])
if 'items' in data:
if list.editable(request.user):
list.remove(items=data['items'])
response = json_response(status=200, text='items removed')
else:
response = json_response(status=403, text='not allowed')
elif 'query' in data:
response = json_response(status=501, text='not implemented')
else:
response = json_response(status=501, text='not implemented')
return render_to_json_response(response)
actions.register(removeListItems, cache=False)
@login_required_json
def addList(request):
'''
takes {
name: value,
}
possible keys to create list:
name
description
type
query
items
view
sort
returns {
id: string,
name: string,
...
}
'''
data = json.loads(request.POST['data'])
data['name'] = re.sub(' \[\d+\]$', '', data.get('name', 'Untitled')).strip()
name = data['name']
if not name:
name = "Untitled"
num = 1
created = False
while not created:
list, created = models.List.objects.get_or_create(name=name, user=request.user)
num += 1
name = data['name'] + ' [%d]' % num
del data['name']
if data:
list.edit(data, request.user)
else:
list.save()
update_numberoflists.delay(request.user.username)
if 'items' in data:
for item in Item.objects.filter(itemId__in=data['items']):
list.add(item)
if list.status == 'featured':
pos, created = models.Position.objects.get_or_create(list=list,
user=request.user, section='featured')
qs = models.Position.objects.filter(section='featured')
else:
pos, created = models.Position.objects.get_or_create(list=list,
user=request.user, section='personal')
qs = models.Position.objects.filter(user=request.user, section='personal')
pos.position = qs.aggregate(Max('position'))['position__max'] + 1
pos.save()
response = json_response(status=200, text='created')
response['data'] = list.json()
return render_to_json_response(response)
actions.register(addList, cache=False)
@login_required_json
def editList(request):
'''
takes {
id: listId,
key: value,
}
keys: name, status, query, position, posterFrames
if you change status you have to provide position of list
posterFrames:
array with objects that have item/position
returns {
id: string,
...
}
'''
data = json.loads(request.POST['data'])
list = get_list_or_404_json(data['id'])
if list.editable(request.user):
response = json_response()
list.edit(data, request.user)
response['data'] = list.json(user=request.user)
else:
response = json_response(status=403, text='not allowed')
return render_to_json_response(response)
actions.register(editList, cache=False)
@login_required_json
def removeList(request):
'''
takes {
id: listId,
}
returns {
}
'''
data = json.loads(request.POST['data'])
list = get_list_or_404_json(data['id'])
response = json_response()
if list.editable(request.user):
list.delete()
update_numberoflists.delay(request.user.username)
else:
response = json_response(status=403, text='not allowed')
return render_to_json_response(response)
actions.register(removeList, cache=False)
@login_required_json
def subscribeToList(request):
'''
takes {
id: listId,
}
returns {
}
'''
data = json.loads(request.POST['data'])
list = get_list_or_404_json(data['id'])
user = request.user
if list.status == 'public' and \
list.subscribed_users.filter(username=user.username).count() == 0:
list.subscribed_users.add(user)
pos, created = models.Position.objects.get_or_create(list=list, user=user, section='public')
if created:
qs = models.Position.objects.filter(user=user, section='public')
pos.position = qs.aggregate(Max('position'))['position__max'] + 1
pos.save()
response = json_response()
return render_to_json_response(response)
actions.register(subscribeToList, cache=False)
@login_required_json
def unsubscribeFromList(request):
'''
takes {
id: listId,
user: username(only admins)
}
returns {
}
'''
data = json.loads(request.POST['data'])
list = get_list_or_404_json(data['id'])
user = request.user
list.subscribed_users.remove(user)
models.Position.objects.filter(list=list, user=user, section='public').delete()
response = json_response()
return render_to_json_response(response)
actions.register(unsubscribeFromList, cache=False)
@login_required_json
def sortLists(request):
'''
takes {
section: 'personal',
ids: [1,2,4,3]
}
known sections: 'personal', 'public', 'featured'
featured can only be edited by admins
returns {
}
'''
data = json.loads(request.POST['data'])
position = 0
section = data['section']
#ids = list(set(data['ids']))
ids = data['ids']
if section == 'featured' and not request.user.get_profile().capability('canEditFeaturedLists'):
response = json_response(status=403, text='not allowed')
else:
user = request.user
if section == 'featured':
for i in ids:
l = get_list_or_404_json(i)
qs = models.Position.objects.filter(section=section, list=l)
if qs.count() > 0:
pos = qs[0]
else:
pos = models.Position(list=l, user=user, section=section)
if pos.position != position:
pos.position = position
pos.save()
position += 1
models.Position.objects.filter(section=section, list=l).exclude(id=pos.id).delete()
else:
for i in ids:
l = get_list_or_404_json(i)
pos, created = models.Position.objects.get_or_create(list=l,
user=request.user, section=section)
if pos.position != position:
pos.position = position
pos.save()
position += 1
response = json_response()
return render_to_json_response(response)
actions.register(sortLists, cache=False)
def icon(request, id, size=16):
if not size:
size = 16
id = id.split(':')
username = id[0]
listname = ":".join(id[1:])
qs = models.List.objects.filter(user__username=username, name=listname)
if qs.count() == 1 and qs[0].accessible(request.user):
list = qs[0]
icon = list.get_icon(int(size))
else:
icon = os.path.join(settings.STATIC_ROOT, 'jpg/list256.jpg')
return HttpFileResponse(icon, content_type='image/jpeg')