bgneal@402: """
bgneal@402: Views for the podcast application.
bgneal@402: 
bgneal@402: """
bgneal@679: import json
bgneal@143: import os.path
bgneal@143: from urlparse import urlparse
gremmie@1: 
bgneal@1032: from django.shortcuts import render
gremmie@1: from django.shortcuts import get_object_or_404
gremmie@1: 
gremmie@1: from podcast.models import Channel
gremmie@1: from podcast.models import Item
gremmie@1: 
gremmie@1: 
bgneal@143: def get_ext_from_url(url):
bgneal@403:      """
bgneal@403:      This function returns the extension part of the path from the given
bgneal@403:      url.
bgneal@403:      """
bgneal@403:      ext = os.path.splitext(urlparse(url).path)[1]
bgneal@403:      if ext.startswith('.'):
bgneal@403:           ext = ext[1:]
bgneal@403:      return ext
bgneal@402: 
bgneal@402: 
bgneal@402: def jplayer_params(ext, url, alt_ext, alt_url):
bgneal@403:      """
bgneal@403:      Compute and returns a 2-tuple: (jplayer_media, jplayer_supplied)
bgneal@403:      where
bgneal@403:           jplayer_media: a string representation of the JSON for the
bgneal@403:                 jplayer setMedia parameter
bgneal@403:           jplayer_supplied: the string for the jplayer supplied parameter
bgneal@402: 
bgneal@403:      media_list is an input list or tuple of 2-tuples of the form
bgneal@403:           (media_type, url)
bgneal@403:      where media_type is e.g. mp3, m4a, ogg, etc.
bgneal@402: 
bgneal@403:      """
bgneal@403:      media = dict([(ext, url)])
bgneal@403:      if alt_ext and alt_url:
bgneal@403:           media[alt_ext] = alt_url
bgneal@402: 
bgneal@403:      # prefer mp4 to mp3
bgneal@403:      if alt_ext is None:
bgneal@403:           supplied = [ext]
bgneal@403:      elif ext == "m4a":
bgneal@403:           supplied = (ext, alt_ext)
bgneal@403:      else:
bgneal@403:           supplied = (alt_ext, ext)
bgneal@402: 
bgneal@403:      supplied = ", ".join(supplied)
bgneal@402: 
bgneal@403:      return json.dumps(media), supplied
bgneal@143: 
bgneal@143: 
gremmie@1: def index(request):
bgneal@403:     try:
bgneal@403:         channel = Channel.objects.get(pk=1)
bgneal@403:     except Channel.DoesNotExist:
bgneal@403:         channel = None
gremmie@1: 
bgneal@1032:     return render(request, 'podcast/index.html', {
bgneal@403:         'channel': channel,
bgneal@1032:         })
gremmie@1: 
gremmie@1: 
gremmie@1: def detail(request, id):
bgneal@403:     podcast = get_object_or_404(Item.objects.select_related(), pk = id)
bgneal@143: 
bgneal@403:     ext = get_ext_from_url(podcast.enclosure_url)
bgneal@403:     alt_ext = None
bgneal@403:     if podcast.alt_enclosure_url:
bgneal@403:         alt_ext = get_ext_from_url(podcast.alt_enclosure_url)
bgneal@143: 
bgneal@403:     jplayer_media, jplayer_supplied = jplayer_params(ext, podcast.enclosure_url,
bgneal@403:               alt_ext, podcast.alt_enclosure_url)
bgneal@402: 
bgneal@1032:     return render(request, 'podcast/detail.html', {
bgneal@403:         'channel': podcast.channel,
bgneal@403:         'podcast': podcast,
bgneal@403:         'ext': ext,
bgneal@403:         'alt_ext': alt_ext,
bgneal@403:         'jplayer_media': jplayer_media,
bgneal@403:         'jplayer_supplied': jplayer_supplied,
bgneal@1032:         })
bgneal@402: 
gremmie@1: 
gremmie@1: def feed(request):
bgneal@403:     try:
bgneal@403:         channel = Channel.objects.get(pk=1)
bgneal@403:     except Channel.DoesNotExist:
bgneal@403:         channel = None
bgneal@403: 
bgneal@403:     if channel:
bgneal@403:         channel.items = Item.objects.filter(channel=channel)
bgneal@403: 
bgneal@1032:     return render(request, 'podcast/feed.xml', {
bgneal@403:         'channel': channel,
bgneal@1032:         })