git.maemo.org Git - gigfinder/blob - src/opt/gigfinder/events.py

   1 import urllib
   2 import urllib2
   3
   4 from resultsparser import parse_xml
   5
   6 class Events:
   7     def __init__(self):
   8         self.api_key = '1928a14bdf51369505530949d8b7e1ee'
   9         self.url_base = 'http://ws.audioscrobbler.com/2.0/'
  10         self.format = 'json'
  11         self.method = 'geo.getevents'
  12
  13     def get_events(self, lat, lng, distance):
  14         """ Retrieve xml and parse into events list """
  15         events = []
  16         for page in ['1', '2', '3']:
  17             xml = self.get_xml(lat, lng, distance, page=page)
  18             events.extend(parse_xml(xml,
  19                                     lat,
  20                                     lng))
  21         return self.sort_events(events)
  22
  23     def sort_events(self, events):
  24         """ Sort gig by distance """
  25         if len(events) > 1:
  26             events.sort(cmp=self.distance_cmp, key=lambda x: x['distance'])
  27         return events
  28
  29     def get_json(self, lat='', lng='', distance=''):
  30         # testing json results
  31         lat = '51.5174'
  32         lng = '-0.0829'
  33         distance = '10'
  34         params = urllib.urlencode({'method': self.method,
  35                                    'api_key': self.api_key,
  36                                    'distance': distance,
  37                                    'long': lng,
  38                                    'lat': lat,
  39                                    'format': self.format})
  40         url = '%s?%s' % (self.url_base, params)
  41         request = urllib2.Request(url, None)
  42         response = urllib2.urlopen(request)
  43         return response
  44
  45     def get_xml(self, lat, lng, distance, page='1'):
  46         """ Return xml from lastfm """
  47         params = urllib.urlencode({'method': self.method,
  48                                    'api_key': self.api_key,
  49                                    'distance': distance,
  50                                    'long': lng,
  51                                    'lat': lat,
  52                                    'page': page})
  53         response = urllib.urlopen(self.url_base, params)
  54         return response.read()
  55
  56     def distance_cmp(self, x, y):
  57         """ Compare distances for list sort """
  58         if x > y:
  59             return 1
  60         elif x == y:
  61             return 0
  62         else:
  63             return -1