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