From 9988c98b2e1b0c3c064f7399745eb21e61463034 Mon Sep 17 00:00:00 2001
From: Paul Lamere <Paul.Lamere@gmail.com>
Date: Mon, 19 May 2014 06:49:08 -0400
Subject: [PATCH] Added paging support and example.

---
 examples/artist_discography.py | 58 ++++++++++++++++++++++++++++++++++
 spotipy/__init__.py            | 21 +++++++++++-
 2 files changed, 78 insertions(+), 1 deletion(-)
 create mode 100644 examples/artist_discography.py

diff --git a/examples/artist_discography.py b/examples/artist_discography.py
new file mode 100644
index 0000000..a0dc72e
--- /dev/null
+++ b/examples/artist_discography.py
@@ -0,0 +1,58 @@
+
+import sys
+import spotipy
+
+''' shows the albums and tracks for a given artist.
+'''
+
+def get_artist(name):
+    results = sp.search(q='artist:' + name, type='artist')
+    items = results['artists']['items']
+    if len(items) > 0:
+        return items[0]
+    else:
+        return None
+
+def show_album_tracks(album):
+    tracks = []
+    results = sp.album_tracks(album['id'])
+    tracks.extend(results['items'])
+    while results['next']:
+        results = sp.next(results)
+        tracks.extend(results['items'])
+    for track in tracks:
+        print '  ', track['name']
+
+def show_artist_albums(id):
+    albums = []
+    results = sp.artist_albums(artist['id'], album_type='album')
+    albums.extend(results['items'])
+    while results['next']:
+        results = sp.next(results)
+        albums.extend(results['items'])
+    print 'Total albums:', len(albums)
+    unique = set()  # skip duplicate albums
+    for album in albums:
+        name = album['name']
+        if not name in unique:  
+            print name
+            unique.add(name)
+            show_album_tracks(album)
+
+def show_artist(artist):
+    print '====', artist['name'], '===='
+    print 'Popularity: ', artist['popularity']
+    if len(artist['genres']) > 0:
+        print 'Genres: ', ','.join(artist['genres'])
+
+if __name__ == '__main__':
+    sp = spotipy.Spotify()
+    sp.trace = False
+
+    if len(sys.argv) < 2:
+        print('Usage: {0} artist name'.format(sys.argv[0]))
+    else:
+        name = ' '.join(sys.argv[1:])
+        artist = get_artist(name)
+        show_artist(artist)
+        show_artist_albums(artist)
diff --git a/spotipy/__init__.py b/spotipy/__init__.py
index 3f77646..0efdb5e 100644
--- a/spotipy/__init__.py
+++ b/spotipy/__init__.py
@@ -53,7 +53,10 @@ class Spotify(object):
             return None
 
     def _internal_call(self, verb, method, params):
-        url = self.prefix + method
+        if not method.startswith('http'):
+            url = self.prefix + method
+        else:
+            url = method
         args = dict(params=params)
         headers = self._auth_headers()
         r = requests.request(verb, url, headers=headers, **args)
@@ -73,6 +76,22 @@ class Spotify(object):
             kwargs.update(args)
         return self._internal_call('GET', method, kwargs)
 
+    def next(self, result):
+        ''' returns the next result given a result
+        '''
+        if result['next']:
+            return self.get(result['next'])
+        else:
+            return None
+
+    def previous(self, result):
+        ''' returns the previous result given a result
+        '''
+        if result['previous']:
+            return self.get(result['previous'])
+        else:
+            return None
+            
     def _warn(self, msg):
         print('warning:' + msg, file=sys.stderr)