Refactor subs_* functions for remote use

The subs_* functions in subs.php have made a lot of assumptions
about users versus profiles. I've refactored the functions to
be methods of the Subscription class instead, and to use Profile
objects throughout.

Some of the checks for blocks or existing subscriptions depended
on users or profiles, so I've moved those methods around a bit.

I've left stubs for the subs_* functions until we get time to replace
them.

1 files changed, 5 insertions, 107 deletions

diff --git a/lib/subs.php b/lib/subs.php
index 5ac1a75a5..5376e21bd 100644
--- a/lib/subs.php
+++ b/lib/subs.php
@@ -19,8 +19,6 @@
 
 if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
 
-require_once('XMPPHP/XMPP.php');
-
 /* Subscribe $user to nickname $other_nickname
   Returns true or an error message.
 */
@@ -44,72 +42,12 @@ function subs_subscribe_user($user, $other_nickname)
 
 function subs_subscribe_to($user, $other)
 {
-    if (!$user->hasRight(Right::SUBSCRIBE)) {
-        return _('You have been banned from subscribing.');
-    }
-
-    if ($user->isSubscribed($other)) {
-        return _('Already subscribed!');
-    }
-
-    if ($other->hasBlocked($user)) {
-        return _('User has blocked you.');
-    }
-
     try {
-        if (Event::handle('StartSubscribe', array($user, $other))) {
-
-            if (!$user->subscribeTo($other)) {
-                return _('Could not subscribe.');
-                return;
-            }
-
-            subs_notify($other, $user);
-
-            $cache = common_memcache();
-
-            if ($cache) {
-                $cache->delete(common_cache_key('user:notices_with_friends:' . $user->id));
-            }
-
-            $profile = $user->getProfile();
-
-            $profile->blowSubscriptionsCount();
-            $other->blowSubscribersCount();
-
-            if ($other->autosubscribe && !$other->isSubscribed($user) && !$user->hasBlocked($other)) {
-                if (!$other->subscribeTo($user)) {
-                    return _('Could not subscribe other to you.');
-                }
-                $cache = common_memcache();
-
-                if ($cache) {
-                    $cache->delete(common_cache_key('user:notices_with_friends:' . $other->id));
-                }
-
-                subs_notify($user, $other);
-            }
-
-            Event::handle('EndSubscribe', array($user, $other));
-        }
+        Subscription::start($user->getProfile(), $other);
+        return true;
     } catch (Exception $e) {
         return $e->getMessage();
     }
-
-    return true;
-}
-
-function subs_notify($listenee, $listener)
-{
-    # XXX: add other notifications (Jabber, SMS) here
-    # XXX: queue this and handle it offline
-    # XXX: Whatever happens, do it in Twitter-like API, too
-    subs_notify_email($listenee, $listener);
-}
-
-function subs_notify_email($listenee, $listener)
-{
-    mail_subscribe_notify($listenee, $listener);
 }
 
 /* Unsubscribe $user from nickname $other_nickname
@@ -128,52 +66,12 @@ function subs_unsubscribe_user($user, $other_nickname)
     return subs_unsubscribe_to($user, $other->getProfile());
 }
 
-/* Unsubscribe user $user from profile $other
- * NB: other can be a remote user. */
-
 function subs_unsubscribe_to($user, $other)
 {
-    if (!$user->isSubscribed($other))
-        return _('Not subscribed!');
-
-    // Don't allow deleting self subs
-
-    if ($user->id == $other->id) {
-        return _('Couldn\'t delete self-subscription.');
-    }
-
     try {
-        if (Event::handle('StartUnsubscribe', array($user, $other))) {
-
-            $sub = DB_DataObject::factory('subscription');
-
-            $sub->subscriber = $user->id;
-            $sub->subscribed = $other->id;
-
-            $sub->find(true);
-
-            // note we checked for existence above
-
-            if (!$sub->delete())
-              return _('Couldn\'t delete subscription.');
-
-            $cache = common_memcache();
-
-            if ($cache) {
-                $cache->delete(common_cache_key('user:notices_with_friends:' . $user->id));
-            }
-
-            $profile = $user->getProfile();
-
-            $profile->blowSubscriptionsCount();
-            $other->blowSubscribersCount();
-
-            Event::handle('EndUnsubscribe', array($user, $other));
-        }
+        Subscription::cancel($user->getProfile(), $other);
+        return true;
     } catch (Exception $e) {
         return $e->getMessage();
     }
-
-    return true;
-}
-
+}
\ No newline at end of file