Ability to join or decline an event

Summary: Ref T7986, Ability to join or decline an event.

Test Plan: Open Calendar event, join event, Invitee list should update. Decline event, invitee list should remove you.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: Korvin, epriestley

Maniphest Tasks: T7986

Differential Revision: https://secure.phabricator.com/D12618

src/__phutil_library_map__.php

@@ -1488,6 +1488,7 @@ phutil_register_library_map(array(
     'PhabricatorCalendarEventInvalidEpochException' => 'applications/calendar/exception/PhabricatorCalendarEventInvalidEpochException.php',
     'PhabricatorCalendarEventInvitee' => 'applications/calendar/storage/PhabricatorCalendarEventInvitee.php',
     'PhabricatorCalendarEventInviteeQuery' => 'applications/calendar/query/PhabricatorCalendarEventInviteeQuery.php',
+    'PhabricatorCalendarEventJoinController' => 'applications/calendar/controller/PhabricatorCalendarEventJoinController.php',
     'PhabricatorCalendarEventListController' => 'applications/calendar/controller/PhabricatorCalendarEventListController.php',
     'PhabricatorCalendarEventPHIDType' => 'applications/calendar/phid/PhabricatorCalendarEventPHIDType.php',
     'PhabricatorCalendarEventQuery' => 'applications/calendar/query/PhabricatorCalendarEventQuery.php',
@@ -4824,6 +4825,7 @@ phutil_register_library_map(array(
       'PhabricatorPolicyInterface',
     ),
     'PhabricatorCalendarEventInviteeQuery' => 'PhabricatorCursorPagedPolicyAwareQuery',
+    'PhabricatorCalendarEventJoinController' => 'PhabricatorCalendarController',
     'PhabricatorCalendarEventListController' => 'PhabricatorCalendarController',
     'PhabricatorCalendarEventPHIDType' => 'PhabricatorPHIDType',
     'PhabricatorCalendarEventQuery' => 'PhabricatorCursorPagedPolicyAwareQuery',

src/applications/calendar/application/PhabricatorCalendarApplication.php

@@ -53,6 +53,8 @@ final class PhabricatorCalendarApplication extends PhabricatorApplication {
             => 'PhabricatorCalendarEventEditController',
           'cancel/(?P<id>[1-9]\d*)/'
             => 'PhabricatorCalendarEventCancelController',
+          'join/(?P<id>[1-9]\d*)/'
+            => 'PhabricatorCalendarEventJoinController',
         ),
       ),
     );

src/applications/calendar/controller/PhabricatorCalendarEventJoinController.php

@@ -0,0 +1,74 @@
+<?php
+
+final class PhabricatorCalendarEventJoinController
+  extends PhabricatorCalendarController {
+
+  private $id;
+
+  public function handleRequest(AphrontRequest $request) {
+    $this->id = $request->getURIData('id');
+    $request = $this->getRequest();
+    $viewer = $request->getViewer();
+    $declined_status = PhabricatorCalendarEventInvitee::STATUS_DECLINED;
+    $attending_status = PhabricatorCalendarEventInvitee::STATUS_ATTENDING;
+
+    $event = id(new PhabricatorCalendarEventQuery())
+      ->setViewer($viewer)
+      ->withIDs(array($this->id))
+      ->executeOne();
+
+    if (!$event) {
+      return new Aphront404Response();
+    }
+
+    $cancel_uri = '/E'.$event->getID();
+    $validation_exception = null;
+
+    $is_attending = $event->getIsUserAttending($viewer->getPHID());
+
+    if ($request->isFormPost()) {
+      $new_status = null;
+
+      if ($is_attending) {
+        $new_status = array($viewer->getPHID() => $declined_status);
+      } else {
+        $new_status = array($viewer->getPHID() => $attending_status);
+      }
+
+      $xaction = id(new PhabricatorCalendarEventTransaction())
+        ->setTransactionType(
+          PhabricatorCalendarEventTransaction::TYPE_INVITE)
+        ->setNewValue($new_status);
+
+      $editor = id(new PhabricatorCalendarEventEditor())
+        ->setActor($viewer)
+        ->setContentSourceFromRequest($request)
+        ->setContinueOnNoEffect(true)
+        ->setContinueOnMissingFields(true);
+
+      try {
+        $editor->applyTransactions($event, array($xaction));
+        return id(new AphrontRedirectResponse())->setURI($cancel_uri);
+      } catch (PhabricatorApplicationTransactionValidationException $ex) {
+        $validation_exception = $ex;
+      }
+    }
+
+    if (!$is_attending) {
+      $title = pht('Join Event');
+      $paragraph = pht('Would you like to join this event?');
+      $submit = pht('Join');
+    } else {
+      $title = pht('Decline Event');
+      $paragraph = pht('Would you like to decline this event?');
+      $submit = pht('Decline');
+    }
+
+    return $this->newDialog()
+      ->setTitle($title)
+      ->setValidationException($validation_exception)
+      ->appendParagraph($paragraph)
+      ->addCancelButton($cancel_uri)
+      ->addSubmitButton($submit);
+  }
+}

src/applications/calendar/controller/PhabricatorCalendarEventViewController.php

@@ -72,6 +72,7 @@ final class PhabricatorCalendarEventViewController
     $viewer = $this->getRequest()->getUser();
     $id = $event->getID();
     $is_cancelled = $event->getIsCancelled();
+    $is_attending = $event->getIsUserAttending($viewer->getPHID());
 
     $actions = id(new PhabricatorActionListView())
       ->setObjectURI($this->getApplicationURI('event/'.$id.'/'))
@@ -91,6 +92,22 @@ final class PhabricatorCalendarEventViewController
         ->setDisabled(!$can_edit)
         ->setWorkflow(!$can_edit));
 
+    if ($is_attending) {
+      $actions->addAction(
+        id(new PhabricatorActionView())
+          ->setName(pht('Decline Event'))
+          ->setIcon('fa-user-times')
+          ->setHref($this->getApplicationURI("event/join/{$id}/"))
+          ->setWorkflow(true));
+    } else {
+      $actions->addAction(
+        id(new PhabricatorActionView())
+          ->setName(pht('Join Event'))
+          ->setIcon('fa-user-plus')
+          ->setHref($this->getApplicationURI("event/join/{$id}/"))
+          ->setWorkflow(true));
+    }
+
     if ($is_cancelled) {
       $actions->addAction(
         id(new PhabricatorActionView())

src/applications/calendar/storage/PhabricatorCalendarEvent.php

@@ -130,6 +130,27 @@ final class PhabricatorCalendarEvent extends PhabricatorCalendarDAO
     return $this;
   }
 
+  public function getUserInviteStatus($phid) {
+    $invitees = $this->getInvitees();
+    $invitees = mpull($invitees, null, 'getInviteePHID');
+
+    $invited = idx($invitees, $phid);
+    if (!$invited) {
+      return PhabricatorCalendarEventInvitee::STATUS_UNINVITED;
+    }
+    $invited = $invited->getStatus();
+    return $invited;
+  }
+
+  public function getIsUserAttending($phid) {
+    $attending_status = PhabricatorCalendarEventInvitee::STATUS_ATTENDING;
+
+    $old_status = $this->getUserInviteStatus($phid);
+    $is_attending = ($old_status == $attending_status);
+
+    return $is_attending;
+  }
+
   /**
    * Validates data and throws exceptions for non-sensical status
    * windows

src/applications/calendar/storage/PhabricatorCalendarEventTransaction.php

@@ -66,9 +66,11 @@ final class PhabricatorCalendarEventTransaction
       case self::TYPE_STATUS:
       case self::TYPE_DESCRIPTION:
       case self::TYPE_CANCEL:
-      case self::TYPE_INVITE:
         return 'fa-pencil';
         break;
+      case self::TYPE_INVITE:
+        return 'fa-user-plus';
+        break;
     }
     return parent::getIcon();
   }