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views.py
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views.py
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#!/usr/bin/env python
#
# Copyright 2008 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import datetime
import logging
import urllib2
from google.appengine.ext import ndb
from django.http import HttpResponse
from django.http import HttpResponseRedirect
from django.http import HttpResponseBadRequest
from django.shortcuts import render_to_response
from django import http
from django import shortcuts
from google.appengine.api import users
import json
from models import *
from forms import *
def respond(request, user, template, params=None):
"""Helper to render a response, passing standard stuff to the response.
Args:
request: The request object.
user: The User object representing the current user; or None if nobody
is logged in.
template: The template name; '.html' is appended automatically.
params: A dict giving the template parameters; modified in-place.
Returns:
Whatever render_to_response(template, params) returns.
Raises:
Whatever render_to_response(template, params) raises.
"""
if params is None:
params = {}
if user:
params['userLogged'] = user
params['sign_out'] = users.CreateLogoutURL('/')
params['is_admin'] = users.IsCurrentUserAdmin() #and
#'Dev' in os.getenv('SERVER_SOFTWARE'))
else:
params['sign_in'] = users.CreateLoginURL(request.path)
if not template.endswith('.html'):
template += '.html'
return shortcuts.render_to_response(template, params)
def index(request):
if users.GetCurrentUser() is None:
return render_to_response('index.html')
else:
return HttpResponseRedirect('/app/welcome')
def map(request):
if users.GetCurrentUser() is not None:
return render_to_response('map.html')
else:
return HttpResponseRedirect('/app/welcome')
def login(request):
return HttpResponseRedirect(users.create_login_url('/app/welcome'))
def logout(request):
return HttpResponseRedirect(users.create_logout_url('/'))
def call_geocoder(address):
maps_url = 'http://maps.googleapis.com/maps/api/geocode/json?address=%s&sensor=false' % address.replace(' ', '+')
logging.debug ('Calling maps: %s' % maps_url)
response = urllib2.urlopen(maps_url)
return response.read()
def createDeliverFee(request):
user = users.GetCurrentUser()
if request.method == 'POST':
logging.debug('saving the deliver fee...')
form = DeliverFeeForm(data=request.POST)
errors = form.errors
if not errors:
try:
deliver_fee = form.save(commit=False)
#TODO: Add it assyncrhonous...
#adding geo location
source_location = json.loads(call_geocoder(deliver_fee.source_address))
deliver_fee.source_lat = extractFromJson(source_location, 'lat')
deliver_fee.source_lng = extractFromJson(source_location, 'lng')
dest_location = json.loads(call_geocoder(deliver_fee.destination_address))
deliver_fee.dest_lat = extractFromJson(dest_location, 'lat')
deliver_fee.dest_lng = extractFromJson(dest_location, 'lng')
deliver_fee.request_date_time = datetime.datetime.today()
deliver_fee.request_user = user
deliver_fee.closed = False
deliver_fee.put()
return http.HttpResponseRedirect('/app/welcome')
except ValueError, err:
logging.error (err)
errors['__all__'] = unicode(err)
if errors:
return respond(request, user, 'deliverfee', {'form' : form } )
else:
form = DeliverFeeForm()
return respond(request, user, 'deliverfee', {'form' : form } )
def extractFromJson(parsed_map, param):
try:
return str(parsed_map.get('results')[0].get('geometry').get('location').get(param))
except TypeError, err:
logging.error(err)
return '0.0';
def editUser(request):
"""Create or edit a User. GET shows a pre filled form, POST processes it."""
app_user = get_app_user()
user = users.GetCurrentUser()
#saves the user
if request.method == 'POST':
logging.debug('saving the user...')
#app_user = app_users[0] if len(app_users) > 0 else None
form = AppUserForm(data=request.POST, instance=app_user)
errors = form.errors
if not errors:
try:
obj_save = form.save(commit=True)
obj_save.user_email = user.email()
obj_save.put()
return http.HttpResponseRedirect('/app/welcome')
except ValueError, err:
logging.error (err)
errors['__all__'] = unicode(err)
if errors:
return respond(request, user, 'signup', {'form' : form } )
if app_user is None:
app_user = AppUser()
app_user.real_user = user
form = AppUserForm(data=None, instance=app_user)
logging.debug ('Return the user..')
return respond(request, user, 'signup', {'form' : form } )
def listDeliveries(request):
user = users.GetCurrentUser()
q = db.GqlQuery("SELECT * "
"FROM DeliverFee "
"WHERE request_user = :1 ",
user )
deliveries = q.fetch(100)
for deliver in deliveries:
logging.debug('Deliver state is %s' % deliver.state)
#we get a count of requests that have been made to this guy...
if deliver.state == 'Pendente':
innerQuery = create_offer_query(deliver)
c = innerQuery.count()
deliver.offers = c
logging.debug('Number of offers: %r' % c)
return respond(request,user, 'listdeliveries', { 'deliveries' : deliveries })
def listOffers(request):
deliver_id = int(request.GET.get('deliverId', 0))
deliver = DeliverFee.get(db.Key.from_path(DeliverFee.kind(), deliver_id))
if deliver is None:
return http.HttpResponseBadRequest('No Deliver exists with that key (%r)' %
deliver_id)
offers = create_offer_query(deliver).fetch(100)
return respond(request,users.GetCurrentUser(), 'listoffers', { 'offers' : offers })
def deliverInfo(request):
deliver_id = int(request.GET.get('deliverId', 0))
deliver = DeliverFee.get(db.Key.from_path(DeliverFee.kind(), deliver_id))
if deliver is None:
return http.HttpResponseBadRequest('No Deliver exists with that key (%r)' %
deliver_id)
#ok, here we need to find the DeliveryOffer that is currently in progress, after the confirmation
q = db.GqlQuery("SELECT * FROM DeliverOffer WHERE deliver_fee = :1 AND state = 'Aceito' ", deliver)
offer = q.get()
return respond(request, users.GetCurrentUser(), 'delivery', { 'delivery' : offer })
def deliverCoordinates(request):
deliver_id = int(request.GET.get('deliverId', 0))
deliver = DeliverFee.get(db.Key.from_path(DeliverFee.kind(), deliver_id))
if deliver is None:
return http.HttpResponseBadRequest('No Deliver exists with that key (%r)' %
deliver_id)
#ok, here we need to find the DeliveryOffer that is currently in progress, after the confirmation
q = db.GqlQuery("SELECT * FROM DeliverOffer WHERE deliver_fee = :1 AND state = 'Aceito' ", deliver)
offer = q.get()
response_data = {}
response_data['src_lat'] = float(deliver.source_lat)
response_data['src_lgn'] = float(deliver.source_lng)
response_data['des_lat'] = float(deliver.dest_lat)
response_data['dest_lgn'] = float(deliver.dest_lng)
response_data['drv_lat'] = float(offer.app_user.last_lat)
response_data['drv_lgn'] = float(offer.app_user.last_lng)
return HttpResponse(json.dumps(response_data), content_type="application/json")
def create_offer_query(deliver):
return db.GqlQuery("SELECT * "
" FROM DeliverOffer "
" WHERE deliver_fee = :1 ",
deliver )
def confirmOffer(request):
if request.method != 'POST':
return HttpResponseBadRequest('Only post is allowed')
offer_id = int(request.POST.get('offerId', 0))
offer = DeliverOffer.get(db.Key.from_path(DeliverOffer.kind(), offer_id))
logging.debug('Confirming %r' % offer_id)
if offer is None:
return HttpResponseBadRequest('This offer does not exists: %r' % offer_id)
#running operations in a transaction
apply_confirm(offer.key())
return HttpResponse("Success")
#@db.transactional(xg=True)
def apply_confirm(key):
offer = db.get(key)
offer.state = 'Aceito'
#these are the other offers, so we want to set them as Rejected
otherOffers = db.GqlQuery("SELECT * FROM DeliverOffer WHERE deliver_fee = :1", offer.deliver_fee).fetch(100)
logging.debug("Other offers are: %s" % str(otherOffers) )
for obj in otherOffers:
if obj.key() is not key:
obj.state = 'Rejeitado'
obj.put()
offer.deliver_fee.state='Em andamento'
offer.deliver_fee.put()
offer.put()
def welcome(request):
app_user = get_app_user()
user = users.GetCurrentUser()
if app_user is None:
return http.HttpResponseRedirect('/app/editUser')
else:
return respond(request, user, 'welcome')
def get_app_user():
user = users.GetCurrentUser()
if user is None:
return http.HttpResponseForbidden('You must be signed in to add or edit a camera')
q = db.GqlQuery("SELECT * "
"FROM AppUser "
"WHERE real_user = :1 ",
user )
return q.get()