examples: add an example to sent a user a shout on Last.fm

2 files changed, 148 insertions, 1 deletions

diff --git a/examples/Makefile.am b/examples/Makefile.am
index e26dbce..67d52e9 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -1,4 +1,4 @@
-noinst_PROGRAMS = test-raw test-xml dump-xml get-fireeagle-location post-twitter get-flickr-favorites
+noinst_PROGRAMS = test-raw test-xml dump-xml get-fireeagle-location post-twitter get-flickr-favorites lastfm-shout
 
 AM_CFLAGS = $(GLIB_CFLAGS) $(SOUP_CFLAGS) -I$(top_srcdir)
 AM_LDFLAGS = $(GLIB_LIBS) $(SOUP_LIBS) ../rest/librest-@API_VERSION@.la ../rest-extras/librest-extras-@API_VERSION@.la
@@ -9,3 +9,4 @@ get_fireeagle_location_SOURCES = get-fireeagle-location.c
 dump_xml_SOURCES = dump-xml.c
 post_twitter_SOURCES = post-twitter.c
 get_flickr_favorites_SOURCES = get-flickr-favorites.c
+lastfm_shout_SOURCES = lastfm-shout.c
diff --git a/examples/lastfm-shout.c b/examples/lastfm-shout.c
new file mode 100644
index 0000000..471b045
--- /dev/null
+++ b/examples/lastfm-shout.c
@@ -0,0 +1,146 @@
+/*
+ * librest - RESTful web services access
+ * Copyright (c) 2010 Intel Corporation.
+ *
+ * Authors: Rob Bradford <rob@linux.intel.com>
+ *          Ross Burton <ross@linux.intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <rest-extras/lastfm-proxy.h>
+#include <rest/rest-xml-parser.h>
+
+/*
+ * Parse the payload and either return a RestXmlNode, or error. As a side-effect
+ * the call is unreffed.
+ */
+static RestXmlNode *
+get_xml (RestProxyCall *call)
+{
+  RestXmlParser *parser;
+  RestXmlNode *root;
+  GError *error = NULL;
+
+  parser = rest_xml_parser_new ();
+
+  root = rest_xml_parser_parse_from_data (parser,
+                                          rest_proxy_call_get_payload (call),
+                                          rest_proxy_call_get_payload_length (call));
+
+  if (!lastfm_proxy_is_successful (root, &error))
+    g_error (error->message);
+
+  g_object_unref (call);
+  g_object_unref (parser);
+
+  return root;
+}
+
+static void
+shout (RestProxy *proxy, const char *username, const char *message)
+{
+  RestProxyCall *call;
+  RestXmlNode *root, *node;
+  GError *error = NULL;
+
+  call = rest_proxy_new_call (proxy);
+  rest_proxy_call_set_method (call, "POST");
+  rest_proxy_call_set_function (call, "user.shout");
+  rest_proxy_call_add_param (call, "user", username);
+  rest_proxy_call_add_param (call, "message", message);
+
+  if (!rest_proxy_call_sync (call, &error))
+    g_error ("Cannot shout: %s", error->message);
+
+  rest_xml_node_unref (get_xml (call));
+}
+
+int
+main (int argc, char **argv)
+{
+  GError *error = NULL;
+  GOptionContext *context;
+  RestProxy *proxy;
+  RestProxyCall *call;
+  RestXmlNode *root;
+  char *token, *url, *userid = NULL, *session = NULL;;
+  GOptionEntry entries[] = {
+    { "session", 's', 0, G_OPTION_ARG_STRING, &session, "Session key (optional)", "KEY" },
+    { "user", 'u', 0, G_OPTION_ARG_STRING, &userid, "User to send a message to", "USERNAME" },
+    { NULL }
+  };
+
+  g_thread_init (NULL);
+  g_type_init ();
+
+  context = g_option_context_new ("- send a shout to a Last.fm user");
+  g_option_context_add_main_entries (context, entries, NULL);
+  if (!g_option_context_parse (context, &argc, &argv, &error)) {
+    g_print ("Option parsing failed: %s\n", error->message);
+    return 1;
+  }
+
+  if (userid == NULL) {
+    g_print ("Need a user ID to send a shout out to\n\n");
+    g_print (g_option_context_get_help (context, TRUE, NULL));
+    return 1;
+  }
+
+  proxy = lastfm_proxy_new ("aa581f6505fd3ea79073ddcc2215cbc7",
+                            "7db227a36b3154e3a3306a23754de1d7");
+
+  if (session) {
+    lastfm_proxy_set_session_key (LASTFM_PROXY (proxy), argv[1]);
+  } else {
+    call = rest_proxy_new_call (proxy);
+    rest_proxy_call_set_function (call, "auth.getToken");
+
+    if (!rest_proxy_call_sync (call, NULL))
+      g_error ("Cannot get token");
+
+    root = get_xml (call);
+    token = g_strdup (rest_xml_node_find (root, "token")->content);
+    g_debug ("got token %s", token);
+    rest_xml_node_unref (root);
+
+    url = lastfm_proxy_build_login_url (LASTFM_PROXY (proxy), token);
+    g_print ("Go to %s to authorise me and then press any key.\n", url);
+    getchar ();
+
+    call = rest_proxy_new_call (proxy);
+    rest_proxy_call_set_function (call, "auth.getSession");
+    rest_proxy_call_add_param (call, "token", token);
+    if (!rest_proxy_call_sync (call, NULL))
+      g_error ("Cannot get session");
+
+    root = get_xml (call);
+    session = rest_xml_node_find (root, "key")->content;
+    g_print ("Got session key %s\n", session);
+    g_print ("Got username %s\n", rest_xml_node_find (root, "name")->content);
+    lastfm_proxy_set_session_key (LASTFM_PROXY (proxy), session);
+    rest_xml_node_unref (root);
+  }
+
+  shout (proxy, userid, "Hello from librest!");
+
+  g_object_unref (proxy);
+
+  return 0;
+}