1 files changed, 28 insertions, 1 deletions
diff --git a/chimere/views.py b/chimere/views.py
index 35c9179..59f6a8c 100644
--- a/chimere/views.py
+++ b/chimere/views.py
@@ -26,6 +26,7 @@ Views of the project
 
 import datetime
 from itertools import groupby
+import simplejson
 
 from django.conf import settings
 from django.core import serializers
@@ -47,7 +48,9 @@ from chimere.widgets import getMapJS, PointChooserWidget, \
                             RouteChooserWidget, AreaWidget
 from chimere.forms import MarkerForm, RouteForm, ContactForm, FileForm, \
      FullFileForm, MultimediaFileFormSet, PictureFileFormSet, notifySubmission,\
-     notifyStaff, AreaForm
+     notifyStaff, AreaForm, RoutingForm
+
+from chimere.route import router
 
 def get_base_uri(request):
     base_uri = 'http://'
@@ -120,6 +123,8 @@ def index(request, area_name=None, default_area=None, simple=False):
     if request.GET and 'lat' in request.GET \
       and 'lon' in request.GET:
         zoomout = None
+    if settings.CHIMERE_ENABLE_ROUTING:
+        response_dct['itinerary_form'] = RoutingForm()
     response_dct.update({
          'actions':actions, 'action_selected':('view',),
          'error_message':'',
@@ -636,6 +641,28 @@ def redirectFromTinyURN(request, area_name='', tiny_urn=''):
         return redir
     return HttpResponseRedirect(response_dct['extra_url'] + parameters)
 
+def route(request, area_name, lon1, lat1, lonlat_steps, lon2, lat2,
+          transport='foot'):
+    '''
+    Get the JSON for a route
+    '''
+    try:
+        lon1, lat1 = float(lon1), float(lat1)
+        lon2, lat2 = float(lon2), float(lat2)
+        steps = [float(lonlat) for lonlat in lonlat_steps.split('_') if lonlat]
+        # regroup by 2
+        steps = [(steps[i*2], steps[i*2+1]) for i in range(len(steps)/2)]
+    except ValueError:
+        return HttpResponse('no results')
+    jsons, desc = router.route(lon1, lat1, lon2, lat2, steps=steps,
+                               transport=transport)
+    if not jsons:
+        return HttpResponse('no results')
+    jsonencoder = simplejson.JSONEncoder()
+    data = '{"properties":{"description":%s}, "type": "FeatureCollection",'\
+           '"features":[%s]}' % (jsonencoder.encode(desc), ",".join(jsons))
+    return HttpResponse(data)
+
 def rss(request, area_name=''):
     '''
     Redirect to RSS subscription page