bgneal@820: """Admin definitions for the bandmap application.
bgneal@820: 
bgneal@820: """
bgneal@823: import datetime
bgneal@826: import json
bgneal@826: import urllib
bgneal@826: import urllib2
bgneal@823: 
bgneal@820: from django.contrib import admin
bgneal@826: import django.contrib.messages as messages
bgneal@820: 
bgneal@820: from bandmap.models import BandEntry
bgneal@823: import bio.badges
bgneal@820: 
bgneal@820: 
bgneal@820: class BandEntryAdmin(admin.ModelAdmin):
bgneal@830:     list_display = ['name', 'date_submitted', 'location', 'is_active',
bgneal@820:             'is_approved']
bgneal@820:     date_hierarchy = 'date_submitted'
bgneal@820:     list_filter = ['date_submitted', 'is_active', 'is_approved']
bgneal@820:     readonly_fields = ['lat', 'lon']
bgneal@820:     search_fields = ['name', 'location', 'note']
bgneal@820:     raw_id_fields = ['user']
bgneal@827:     actions = ['update_location', 'approve_bands']
bgneal@823: 
bgneal@823:     def approve_bands(self, request, qs):
bgneal@823:         """This admin action awards a map pin to the user who added the band.
bgneal@823:         The band is then published and will be available for display on the map.
bgneal@823: 
bgneal@823:         """
bgneal@823:         count = qs.count()
bgneal@823:         now = datetime.datetime.now()
bgneal@823:         for band in qs:
bgneal@827:             if not band.is_approved:
bgneal@827:                 if band.date_approved is None:
bgneal@827:                     bio.badges.award_badge(bio.badges.MAP_PIN, band.user)
bgneal@827:                 band.date_approved = now
bgneal@827:                 band.is_approved = True
bgneal@827:                 band.save()
bgneal@823: 
bgneal@823:         self.message_user(request, "%d band(s) approved." % count)
bgneal@823: 
bgneal@823:     approve_bands.short_description = "Approve selected band map entries"
bgneal@823: 
bgneal@826:     def update_location(self, request, qs):
bgneal@826:         """Admin action to refresh the lat/lon fields after updating the
bgneal@826:         location field. Queries the Google Maps HTTP server-side API for the
bgneal@826:         data.
bgneal@826: 
bgneal@826:         """
bgneal@826:         base_url = "http://maps.googleapis.com/maps/api/geocode/json?address=%s"
bgneal@826:         ok_cnt = 0
bgneal@826:         for band in qs:
bgneal@826:             url = base_url % urllib.quote_plus(band.location)
bgneal@826:             try:
bgneal@826:                 response = urllib2.urlopen(url)
bgneal@826:             except urllib2.URLError as ex:
bgneal@826:                 self.message_user(request, 'Error processing {}: {}'.format(
bgneal@826:                     band.name, ex), level=messages.ERROR)
bgneal@826:                 continue
bgneal@826: 
bgneal@826:             code = response.getcode()
bgneal@826:             if code == 200:
bgneal@826:                 result = json.loads(response.read())
bgneal@826:                 try:
bgneal@826:                     loc = result['results'][0]['geometry']['location']
bgneal@826:                     band.lat = loc['lat']
bgneal@826:                     band.lon = loc['lng']
bgneal@826:                 except (KeyError, IndexError) as ex:
bgneal@826:                     self.message_user(request, 'Unexpected response for {}'.format(
bgneal@826:                         band.name), level=messages.ERROR)
bgneal@826:                 else:
bgneal@826:                     band.save()
bgneal@826:                     ok_cnt += 1
bgneal@826:             else:
bgneal@826:                 msg = "Error response ({}) for band {}".format(code, band.name)
bgneal@826:                 self.message_user(request, msg, level=messages.ERROR)
bgneal@826: 
bgneal@826:         if ok_cnt > 0:
bgneal@826:             msg = '{} band location(s) successfully updated'.format(ok_cnt)
bgneal@826:             self.message_user(request, msg)
bgneal@826: 
bgneal@826:     update_location.short_description = "Update lat/lon for selected band map entries"
bgneal@826: 
bgneal@820: 
bgneal@820: admin.site.register(BandEntry, BandEntryAdmin)