Adding official Feed stories for Calendar event invite/uninvite actions

Summary: Closes T7988, Adding official Feed stories for Calendar event invite/uninvite actions.

Test Plan: Invite/uninvite users to Calendar events, save, go to Feed, inspect stories.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: Korvin, epriestley

Maniphest Tasks: T7988

Differential Revision: https://secure.phabricator.com/D12629

src/applications/calendar/storage/PhabricatorCalendarEventTransaction.php

@@ -138,6 +138,8 @@ final class PhabricatorCalendarEventTransaction
             $this->renderHandleLink($author_phid));
         }
       case self::TYPE_INVITE:
+        $text = null;
+
         if (count($old) === 1
           && count($new) === 1
           && isset($old[$author_phid])) {
@@ -176,7 +178,6 @@ final class PhabricatorCalendarEventTransaction
           $self_declined = null;
           $added = array();
           $uninvited = array();
-          $text = null;
 
           foreach ($new as $phid => $status) {
             if ($status == PhabricatorCalendarEventInvitee::STATUS_INVITED
@@ -197,19 +198,19 @@ final class PhabricatorCalendarEventTransaction
 
           if ($count_added > 0 && $count_uninvited == 0) {
             $added_text = $this->renderHandleList($added);
-            $text = pht('%s invited: %s.',
+            $text = pht('%s invited %s.',
               $this->renderHandleLink($author_phid),
               $added_text);
           } else if ($count_added > 0 && $count_uninvited > 0) {
             $added_text = $this->renderHandleList($added);
             $uninvited_text = $this->renderHandleList($uninvited);
-            $text = pht('%s invited: %s and uninvited: %s',
+            $text = pht('%s invited %s and uninvited: %s',
               $this->renderHandleLink($author_phid),
               $added_text,
               $uninvited_text);
           } else if ($count_added == 0 && $count_uninvited > 0) {
             $uninvited_text = $this->renderHandleList($uninvited);
-            $text = pht('%s uninvited: %s.',
+            $text = pht('%s uninvited %s.',
               $this->renderHandleLink($author_phid),
               $uninvited_text);
           } else {
@@ -218,7 +219,6 @@ final class PhabricatorCalendarEventTransaction
           }
         }
         return $text;
-        break;
     }
     return parent::getTitle();
   }
@@ -299,10 +299,97 @@ final class PhabricatorCalendarEventTransaction
             $this->renderHandleLink($object_phid));
         }
       case self::TYPE_INVITE:
-        return pht(
+        $text = null;
-          '%s updated the invitee list of %s.',
+
+        if (count($old) === 1
+          && count($new) === 1
+          && isset($old[$author_phid])) {
+          // user joined/declined/accepted event themself
+          $old_status = $old[$author_phid];
+          $new_status = $new[$author_phid];
+
+          if ($old_status !== $new_status) {
+            switch ($new_status) {
+              case PhabricatorCalendarEventInvitee::STATUS_INVITED:
+                $text = pht(
+                  '%s has joined %s.',
                   $this->renderHandleLink($author_phid),
                   $this->renderHandleLink($object_phid));
+                  break;
+              case PhabricatorCalendarEventInvitee::STATUS_ATTENDING:
+                $text = pht(
+                  '%s is attending %s.',
+                  $this->renderHandleLink($author_phid),
+                  $this->renderHandleLink($object_phid));
+                  break;
+              case PhabricatorCalendarEventInvitee::STATUS_DECLINED:
+              case PhabricatorCalendarEventInvitee::STATUS_UNINVITED:
+                $text = pht(
+                  '%s has declined %s.',
+                  $this->renderHandleLink($author_phid),
+                  $this->renderHandleLink($object_phid));
+                  break;
+              default:
+                $text = pht(
+                  '%s has changed their status of %s.',
+                  $this->renderHandleLink($author_phid),
+                  $this->renderHandleLink($object_phid));
+                break;
+            }
+          }
+        } else {
+          // user changed status for many users
+          $self_joined = null;
+          $self_declined = null;
+          $added = array();
+          $uninvited = array();
+
+          // $event = $this->renderHandleLink($object_phid);
+
+          foreach ($new as $phid => $status) {
+            if ($status == PhabricatorCalendarEventInvitee::STATUS_INVITED
+              || $status == PhabricatorCalendarEventInvitee::STATUS_ATTENDING) {
+              // added users
+              $added[] = $phid;
+            } else if (
+              $status == PhabricatorCalendarEventInvitee::STATUS_DECLINED
+              || $status == PhabricatorCalendarEventInvitee::STATUS_UNINVITED) {
+              $uninvited[] = $phid;
+            }
+          }
+
+          $count_added = count($added);
+          $count_uninvited = count($uninvited);
+          $added_text = null;
+          $uninvited_text = null;
+
+          if ($count_added > 0 && $count_uninvited == 0) {
+            $added_text = $this->renderHandleList($added);
+            $text = pht('%s invited %s to %s.',
+              $this->renderHandleLink($author_phid),
+              $added_text,
+              $this->renderHandleLink($object_phid));
+          } else if ($count_added > 0 && $count_uninvited > 0) {
+            $added_text = $this->renderHandleList($added);
+            $uninvited_text = $this->renderHandleList($uninvited);
+            $text = pht('%s invited %s and uninvited %s to %s',
+              $this->renderHandleLink($author_phid),
+              $added_text,
+              $uninvited_text,
+              $this->renderHandleLink($object_phid));
+          } else if ($count_added == 0 && $count_uninvited > 0) {
+            $uninvited_text = $this->renderHandleList($uninvited);
+            $text = pht('%s uninvited %s to %s.',
+              $this->renderHandleLink($author_phid),
+              $uninvited_text,
+              $this->renderHandleLink($object_phid));
+          } else {
+            $text = pht('%s updated the invitee list of %s.',
+              $this->renderHandleLink($author_phid),
+              $this->renderHandleLink($object_phid));
+          }
+        }
+        return $text;
     }
 
     return parent::getTitleForFeed();