<?php

final class DifferentialBlameRevisionField
  extends DifferentialStoredCustomField {

  public function getFieldKey() {
    return 'phabricator:blame-revision';
  }

  public function getFieldName() {
    return pht('Blame Revision');
  }

  public function getFieldDescription() {
    return pht('Stores a reference to what this fixes.');
  }

  public function shouldAppearInPropertyView() {
    return true;
  }

  public function renderPropertyViewLabel() {
    return $this->getFieldName();
  }

  public function renderPropertyViewValue(array $handles) {
    return $this->getValue();
  }

  public function shouldAppearInEditView() {
    return true;
  }

  public function shouldAppearInApplicationTransactions() {
    return true;
  }

  public function getOldValueForApplicationTransactions() {
    return $this->getValue();
  }

  public function getNewValueForApplicationTransactions() {
    return $this->getValue();
  }

  public function readValueFromRequest(AphrontRequest $request) {
    $this->setValue($request->getStr($this->getFieldKey()));
  }

  public function renderEditControl(array $handles) {
    return id(new AphrontFormTextControl())
      ->setName($this->getFieldKey())
      ->setValue($this->getValue())
      ->setLabel($this->getFieldName());
  }

  public function getApplicationTransactionTitle(
    PhabricatorApplicationTransaction $xaction) {
    $author_phid = $xaction->getAuthorPHID();
    $old = $xaction->getOldValue();
    $new = $xaction->getNewValue();

    return pht(
      '%s updated the blame revision for this revision.',
      $xaction->renderHandleLink($author_phid));
  }

  public function getApplicationTransactionTitleForFeed(
    PhabricatorApplicationTransaction $xaction,
    PhabricatorFeedStory $story) {

    $object_phid = $xaction->getObjectPHID();
    $author_phid = $xaction->getAuthorPHID();
    $old = $xaction->getOldValue();
    $new = $xaction->getNewValue();

    return pht(
      '%s updated the blame revision for %s.',
      $xaction->renderHandleLink($author_phid),
      $xaction->renderHandleLink($object_phid));
  }

}