cablegates/pandora/annotation/views.py

# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
from __future__ import division

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


from app.models import site_config
from item.models import Item
from api.actions import actions

import models


def findAnnotations(request):
    '''
        param data {
            fixme
        }

        return {
            'status': {'code': int, 'text': string}
            'data': {
                annotations = [{..}, {...}, ...]
            }
        }
    '''
    #FIXME: implement findItem like queries
    data = json.loads(request.POST['data'])
    response = json_response(status=200, text='ok')
    qs = models.Annotations.objects.filter(item__itemId=data['item'])
    response['data']['annotations'] = [a.json() for a in qs]
    return render_to_json_response(response)
actions.register(findAnnotations)


@login_required_json
def addAnnotation(request):
    '''
        param data {
            item: itemId,
            layer: layerId,
            in: float,
            out: float,
            value: string
        }
        return {'status': {'code': int, 'text': string},
                'data': {
                    id: 123,
                    ...
                }
        }
    '''
    data = json.loads(request.POST['data'])
    for key in ('item', 'layer', 'in', 'out', 'value'):
        if key not in data:
            return render_to_json_response(json_response(status=400,
                                                         text='invalid data'))

    #FIXME: this should be only called starting up server
    models.load_layers(site_config()['layers'])

    item = get_object_or_404_json(Item, itemId=data['item'])
    layer = get_object_or_404_json(models.Layer, name=data['layer'])

    annotation = models.Annotation(
        item=item,
        layer=layer,
        user=request.user,
        start=float(data['in']), end=float(data['out']),
        value=data['value'])
    annotation.save()
    response = json_response(annotation.json())
    return render_to_json_response(response)

    response = {'status': {'code': 501, 'text': 'not implemented'}}
    return render_to_json_response(response)
actions.register(addAnnotation, cache=False)


@login_required_json
def removeAnnotations(request):
    '''
        param data {
            ids: []
        }
        return {'status': {'code': int, 'text': string},
                'data': {
                }
        }
    '''
    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)
actions.register(removeAnnotations, cache=False)


@login_required_json
def editAnnotation(request):
    '''
        param data {
            id:,
            in: float,
            out: float,
            value: string,
        }
        return {'status': {'code': int, 'text': string},
                'data': {
                    id:
                    ...
                }
        }
    '''
    response = json_response({})
    data = json.loads(request.POST['data'])
    a = get_object_or_404_json(models.Annotation, pk=ox.from32(data['id']))
    if a.editable(request.user):
        a.value = data['value']
        a.start = data['in']
        a.end = data['out']
        a.save()
        response['data'] = a.json()
    else:
        response = json_response(status=403, text='permission denied')
    return render_to_json_response(response)
actions.register(editAnnotation, cache=False)