<?php

/**
 * @group pholio
 */
final class PholioMockViewController extends PholioController {

  private $id;
  private $imageID;
  private $maniphestTaskPHIDs = array();

  private function setManiphestTaskPHIDs($maniphest_task_phids) {
    $this->maniphestTaskPHIDs = $maniphest_task_phids;
    return $this;
  }
  private function getManiphestTaskPHIDs() {
    return $this->maniphestTaskPHIDs;
  }

  public function shouldAllowPublic() {
    return true;
  }

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

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

    $mock = id(new PholioMockQuery())
      ->setViewer($user)
      ->withIDs(array($this->id))
      ->needImages(true)
      ->needCoverFiles(true)
      ->executeOne();

    if (!$mock) {
      return new Aphront404Response();
    }

    $xactions = id(new PholioTransactionQuery())
      ->setViewer($user)
      ->withObjectPHIDs(array($mock->getPHID()))
      ->execute();

    $phids = PhabricatorEdgeQuery::loadDestinationPHIDs(
      $mock->getPHID(),
      PhabricatorEdgeConfig::TYPE_MOCK_HAS_TASK);
    $this->setManiphestTaskPHIDs($phids);
    $phids[] = $mock->getAuthorPHID();
    $this->loadHandles($phids);

    $engine = id(new PhabricatorMarkupEngine())
      ->setViewer($user);
    $engine->addObject($mock, PholioMock::MARKUP_FIELD_DESCRIPTION);
    foreach ($xactions as $xaction) {
      if ($xaction->getComment()) {
        $engine->addObject(
          $xaction->getComment(),
          PhabricatorApplicationTransactionComment::MARKUP_FIELD_COMMENT);
      }
    }
    $engine->process();

    $title = $mock->getName();

    $header = id(new PHUIHeaderView())
      ->setHeader($title)
      ->setUser($user)
      ->setPolicyObject($mock);

    $actions = $this->buildActionView($mock);
    $properties = $this->buildPropertyView($mock, $engine);

    require_celerity_resource('pholio-css');
    require_celerity_resource('pholio-inline-comments-css');

    $image_status = $this->getImageStatus($mock, $this->imageID);

    $comment_form_id = celerity_generate_unique_node_id();
    $output = id(new PholioMockImagesView())
      ->setRequestURI($request->getRequestURI())
      ->setCommentFormID($comment_form_id)
      ->setUser($user)
      ->setMock($mock)
      ->setImageID($this->imageID);

    $xaction_view = id(new PholioTransactionView())
      ->setUser($this->getRequest()->getUser())
      ->setObjectPHID($mock->getPHID())
      ->setTransactions($xactions)
      ->setMarkupEngine($engine);

    $add_comment = $this->buildAddCommentView($mock, $comment_form_id);

    $crumbs = $this->buildApplicationCrumbs();
    $crumbs->setActionList($actions);
    $crumbs->addCrumb(
      id(new PhabricatorCrumbView())
        ->setName('M'.$mock->getID())
        ->setHref('/M'.$mock->getID()));

    $content = array(
      $crumbs,
      $image_status,
      $header,
      $actions,
      $properties,
      $output->render(),
      $xaction_view,
      $add_comment,
    );

    return $this->buildApplicationPage(
      $content,
      array(
        'title' => 'M'.$mock->getID().' '.$title,
        'device' => true,
        'pageObjects' => array($mock->getPHID()),
      ));
  }

  private function getImageStatus(PholioMock $mock, $image_id) {
    $status = null;
    $images = $mock->getImages();
    foreach ($images as $image) {
      if ($image->getID() == $image_id) {
        return $status;
      }
    }

    $images = $mock->getAllImages();
    $images = mpull($images, null, 'getID');
    $image = idx($images, $image_id);

    if ($image) {
      $history = $mock->getImageHistorySet($image_id);
      $latest_image = last($history);
      $href = $this->getApplicationURI(
        'image/history/'.$latest_image->getID().'/');
      $status = id(new AphrontErrorView())
        ->setSeverity(AphrontErrorView::SEVERITY_NOTICE)
        ->setTitle(pht('The requested image is obsolete.'))
        ->appendChild(phutil_tag(
          'p',
          array(),
          array(
            pht('You are viewing this mock with the latest image set.'),
            ' ',
            phutil_tag(
              'a',
              array('href' => $href),
              pht(
                'Click here to see the history of the now obsolete image.')))));
    }

    return $status;
  }

  private function buildActionView(PholioMock $mock) {
    $user = $this->getRequest()->getUser();

    $actions = id(new PhabricatorActionListView())
      ->setUser($user)
      ->setObjectURI($this->getRequest()->getRequestURI())
      ->setObject($mock);

    $can_edit = PhabricatorPolicyFilter::hasCapability(
      $user,
      $mock,
      PhabricatorPolicyCapability::CAN_EDIT);

    $actions->addAction(
      id(new PhabricatorActionView())
      ->setIcon('edit')
      ->setName(pht('Edit Mock'))
      ->setHref($this->getApplicationURI('/edit/'.$mock->getID().'/'))
      ->setDisabled(!$can_edit)
      ->setWorkflow(!$can_edit));

    $actions->addAction(
      id(new PhabricatorActionView())
      ->setIcon('attach')
      ->setName(pht('Edit Maniphest Tasks'))
      ->setHref("/search/attach/{$mock->getPHID()}/TASK/edge/")
      ->setDisabled(!$user->isLoggedIn())
      ->setWorkflow(true));

    return $actions;
  }

  private function buildPropertyView(
    PholioMock $mock,
    PhabricatorMarkupEngine $engine) {

    $user = $this->getRequest()->getUser();

    $properties = id(new PhabricatorPropertyListView())
      ->setUser($user)
      ->setObject($mock);

    $properties->addProperty(
      pht('Author'),
      $this->getHandle($mock->getAuthorPHID())->renderLink());

    $properties->addProperty(
      pht('Created'),
      phabricator_datetime($mock->getDateCreated(), $user));

    if ($this->getManiphestTaskPHIDs()) {
      $properties->addProperty(
        pht('Maniphest Tasks'),
        $this->renderHandlesForPHIDs($this->getManiphestTaskPHIDs()));
    }

    $properties->invokeWillRenderEvent();

    $properties->addImageContent(
      $engine->getOutput($mock, PholioMock::MARKUP_FIELD_DESCRIPTION));

    return $properties;
  }

  private function buildAddCommentView(PholioMock $mock, $comment_form_id) {
    $user = $this->getRequest()->getUser();

    $draft = PhabricatorDraft::newFromUserAndKey($user, $mock->getPHID());

    $is_serious = PhabricatorEnv::getEnvConfig('phabricator.serious-business');

    $title = $is_serious
      ? pht('Add Comment')
      : pht('History Beckons');

    $header = id(new PHUIHeaderView())
      ->setHeader($title);

    $button_name = $is_serious
      ? pht('Add Comment')
      : pht('Answer The Call');

    $form = id(new PhabricatorApplicationTransactionCommentView())
      ->setUser($user)
      ->setObjectPHID($mock->getPHID())
      ->setFormID($comment_form_id)
      ->setDraft($draft)
      ->setSubmitButtonName($button_name)
      ->setAction($this->getApplicationURI('/comment/'.$mock->getID().'/'))
      ->setRequestURI($this->getRequest()->getRequestURI());

    return array(
      $header,
      $form,
    );
  }

}