cablegates/pandora/annotation/views.py

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# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
from __future__ import division
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import ox
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
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from app.models import site_config
from item.models import Item
from api.actions import actions
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from item import utils
from item.models import Item
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import models
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def parse_query(data, user):
query = {}
query['range'] = [0, 100]
query['sort'] = [{'key':'in', 'operator':'+'}]
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for key in ('keys', 'group', 'range', 'sort', 'query'):
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if key in data:
query[key] = data[key]
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query['qs'] = models.Annotation.objects.find(query, user)
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if 'itemQuery' in data:
item_query = Item.objects.find({'query': data['itemQuery']}, user)
query['qs'] = query['qs'].filter(item__in=item_query)
return query
def order_query(qs, sort):
qs = qs.order_by('start')
return qs
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def findAnnotations(request):
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'''
param data {
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query: ...
itemQuery: ...
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}
return {
'status': {'code': int, 'text': string}
'data': {
annotations = [{..}, {...}, ...]
}
}
'''
data = json.loads(request.POST['data'])
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response = json_response()
query = parse_query(data, request.user)
qs = order_query(query['qs'], query['sort'])
if 'keys' in data:
qs = qs[query['range'][0]:query['range'][1]]
response['data']['items'] = [p.json(keys=data['keys']) for p in qs]
elif 'position' in query:
ids = [i.get_id() for i in qs]
data['conditions'] = data['conditions'] + {
'value': data['position'],
'key': query['sort'][0]['key'],
'operator': '^'
}
query = parse_query(data, request.user)
qs = order_query(query['qs'], query['sort'])
if qs.count() > 0:
response['data']['position'] = utils.get_positions(ids, [qs[0].itemId])[0]
elif 'positions' in data:
ids = [i.get_id() for i in qs]
response['data']['positions'] = utils.get_positions(ids, data['positions'])
else:
response['data']['items'] = qs.count()
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return render_to_json_response(response)
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actions.register(findAnnotations)
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@login_required_json
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def addAnnotation(request):
'''
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param data {
item: itemId,
layer: layerId,
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in: float,
out: float,
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value: string
}
return {'status': {'code': int, 'text': string},
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'data': {
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id: 123,
...
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}
}
'''
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data = json.loads(request.POST['data'])
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for key in ('item', 'layer', 'in', 'out', 'value'):
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if key not in data:
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return render_to_json_response(json_response(status=400,
text='invalid data'))
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#FIXME: this should be only called starting up server
models.load_layers(site_config()['layers'])
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item = get_object_or_404_json(Item, itemId=data['item'])
layer = get_object_or_404_json(models.Layer, name=data['layer'])
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annotation = models.Annotation(
item=item,
layer=layer,
user=request.user,
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start=float(data['in']), end=float(data['out']),
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value=data['value'])
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annotation.save()
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response = json_response(annotation.json())
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return render_to_json_response(response)
response = {'status': {'code': 501, 'text': 'not implemented'}}
return render_to_json_response(response)
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actions.register(addAnnotation, cache=False)
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@login_required_json
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def removeAnnotations(request):
'''
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param data {
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ids: []
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}
return {'status': {'code': int, 'text': string},
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'data': {
}
}
'''
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response = json_response({})
data = json.loads(request.POST['data'])
ids = map(ox.from32, data['ids'])
failed = []
for a in models.Annotation.objects.filter(id__in=ids):
if a.editable(request.user):
a.delete()
else:
failed.append(a.get_id)
if failed:
response = json_response(status=403, text='permission denied')
response['data']['ids'] = failed
return render_to_json_response(response)
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actions.register(removeAnnotations, cache=False)
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@login_required_json
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def editAnnotation(request):
'''
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param data {
id:,
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in: float,
out: float,
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value: string,
}
return {'status': {'code': int, 'text': string},
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'data': {
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id:
...
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}
}
'''
response = json_response({})
data = json.loads(request.POST['data'])
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itemId, annotationId = data['id'].split('/')
a = get_object_or_404_json(models.Annotation, pk=ox.from32(annotationId))
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if a.editable(request.user):
a.value = data['value']
a.start = data['in']
a.end = data['out']
a.save()
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response['data'] = a.json()
else:
response = json_response(status=403, text='permission denied')
return render_to_json_response(response)
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actions.register(editAnnotation, cache=False)