DifferentialAsanaRepresentationFieldSpecification.php
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	<?php

	final class DifferentialAsanaRepresentationFieldSpecification
	extends DifferentialFieldSpecification {

	public function shouldAppearOnRevisionView() {
	return (bool)PhabricatorEnv::getEnvConfig('asana.workspace-id');
	}

	public function renderLabelForRevisionView() {
	return pht('In Asana:');
	}

	public function renderValueForRevisionView() {
	$viewer = $this->getUser();
	$src_phid = $this->getRevision()->getPHID();
	$edge_type = PhabricatorEdgeConfig::TYPE_PHOB_HAS_ASANATASK;

	$query = id(new PhabricatorEdgeQuery())
	->withSourcePHIDs(array($src_phid))
	->withEdgeTypes(array($edge_type))
	->needEdgeData(true);

	$edges = $query->execute();
	if (!$edges) {
	return null;
	}

	$edge = head($edges[$src_phid][$edge_type]);

	if (!empty($edge['data']['gone'])) {
	return phutil_tag(
	'em',
	array(),
	pht('Asana Task Deleted'));
	}

	$ref = id(new DoorkeeperImportEngine())
	->setViewer($viewer)
	->withPHIDs(array($edge['dst']))
	->needLocalOnly(true)
	->executeOne();

	if (!$ref) {
	return null;
	}

	$tag_id = celerity_generate_unique_node_id();
	$xobj = $ref->getExternalObject();
	$href = $xobj->getObjectURI();

	Javelin::initBehavior(
	'doorkeeper-tag',
	array(
	'tags' => array(
	array(
	'id' => $tag_id,
	'ref' => array(
	$ref->getApplicationType(),
	$ref->getApplicationDomain(),
	$ref->getObjectType(),
	$ref->getObjectID(),
	),
	),
	),
	));

	return id(new PhabricatorTagView())
	->setID($tag_id)
	->setName($href)
	->setHref($href)
	->setType(PhabricatorTagView::TYPE_OBJECT)
	->setExternal(true);
	}

	}