<?php

final class PhabricatorCalendarEventViewController
  extends PhabricatorCalendarController {

  private $id;

  public function willProcessRequest(array $data) {
    $this->id = $data['id'];
  }

  public function processRequest() {
    $request = $this->getRequest();
    $viewer = $request->getUser();

    $event = id(new PhabricatorCalendarEventQuery())
      ->setViewer($viewer)
      ->withIDs(array($this->id))
      ->executeOne();
    if (!$event) {
      return new Aphront404Response();
    }

    $title = pht('Event %d', $event->getID());
    $crumbs = $this->buildApplicationCrumbs();
    $crumbs->addTextCrumb($title);

    $header = $this->buildHeaderView($event);
    $actions = $this->buildActionView($event);
    $properties = $this->buildPropertyView($event);

    $properties->setActionList($actions);
    $box = id(new PHUIObjectBoxView())
      ->setHeader($header)
      ->addPropertyList($properties);

    return $this->buildApplicationPage(
      array(
        $crumbs,
        $box,
      ),
      array(
        'title' => $title,
        'device' => true,
      ));
  }

  private function buildHeaderView(PhabricatorCalendarEvent $event) {
    $viewer = $this->getRequest()->getUser();

    return id(new PHUIHeaderView())
      ->setUser($viewer)
      ->setHeader($event->getTerseSummary($viewer))
      ->setPolicyObject($event);
  }

  private function buildActionView(PhabricatorCalendarEvent $event) {
    $viewer = $this->getRequest()->getUser();
    $id = $event->getID();

    $actions = id(new PhabricatorActionListView())
      ->setObjectURI($this->getApplicationURI('event/'.$id.'/'))
      ->setUser($viewer);

    $can_edit = PhabricatorPolicyFilter::hasCapability(
      $viewer,
      $event,
      PhabricatorPolicyCapability::CAN_EDIT);

    $actions->addAction(
      id(new PhabricatorActionView())
        ->setName(pht('Edit Event'))
        ->setIcon('fa-pencil')
        ->setHref($this->getApplicationURI("event/edit/{$id}/"))
        ->setDisabled(!$can_edit)
        ->setWorkflow(!$can_edit));

    $actions->addAction(
      id(new PhabricatorActionView())
        ->setName(pht('Cancel Event'))
        ->setIcon('fa-times')
        ->setHref($this->getApplicationURI("event/delete/{$id}/"))
        ->setDisabled(!$can_edit)
        ->setWorkflow(true));

    return $actions;
  }

  private function buildPropertyView(PhabricatorCalendarEvent $event) {
    $viewer = $this->getRequest()->getUser();

    $properties = id(new PHUIPropertyListView())
      ->setUser($viewer)
      ->setObject($event);

    $properties->addProperty(
      pht('Starts'),
      phabricator_datetime($event->getDateFrom(), $viewer));

    $properties->addProperty(
      pht('Ends'),
      phabricator_datetime($event->getDateTo(), $viewer));

    $properties->addSectionHeader(
      pht('Description'),
      PHUIPropertyListView::ICON_SUMMARY);
    $properties->addTextContent($event->getDescription());

    return $properties;
  }

}