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phorge/src/applications/macro/engine/PhabricatorMemeEngine.php
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PhabricatorMemeEngine.php
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<?php
final class PhabricatorMemeEngine extends Phobject {
private $viewer;
private $template;
private $aboveText;
private $belowText;
private $templateFile;
public function setViewer(PhabricatorUser $viewer) {
$this->viewer = $viewer;
return $this;
}
public function getViewer() {
return $this->viewer;
}
public function setTemplate($template) {
$this->template = $template;
return $this;
}
public function getTemplate() {
return $this->template;
}
public function setAboveText($above_text) {
$this->aboveText = $above_text;
return $this;
}
public function getAboveText() {
return $this->aboveText;
}
public function setBelowText($below_text) {
$this->belowText = $below_text;
return $this;
}
public function getBelowText() {
return $this->belowText;
}
public function getGenerateURI() {
return id(new PhutilURI('/macro/meme/'))
->alter('macro', $this->getTemplate())
->alter('above', $this->getAboveText())
->alter('below', $this->getBelowText());
}
public function newAsset() {
$cache = $this->loadCachedFile();
if ($cache) {
return $cache;
}
$template = $this->loadTemplateFile();
if (!$template) {
throw new Exception(
pht(
'Template "%s" is not a valid template.',
$template));
}
$hash = $this->newTransformHash();
$transformer = new PhabricatorImageTransformer();
$asset = $transformer->executeMemeTransform(
$template,
$this->getAboveText(),
$this->getBelowText());
$xfile = id(new PhabricatorTransformedFile())
->setOriginalPHID($template->getPHID())
->setTransformedPHID($asset->getPHID())
->setTransform($hash);
try {
$caught = null;
$unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
try {
$xfile->save();
} catch (Exception $ex) {
$caught = $ex;
}
unset($unguarded);
if ($caught) {
throw $caught;
}
return $asset;
} catch (AphrontDuplicateKeyQueryException $ex) {
$xfile = $this->loadCachedFile();
if (!$xfile) {
throw $ex;
}
return $xfile;
}
}
private function newTransformHash() {
$properties = array(
'kind' => 'meme',
'above' => phutil_utf8_strtoupper($this->getAboveText()),
'below' => phutil_utf8_strtoupper($this->getBelowText()),
);
$properties = phutil_json_encode($properties);
return PhabricatorHash::digestForIndex($properties);
}
public function loadCachedFile() {
$viewer = $this->getViewer();
$template_file = $this->loadTemplateFile();
if (!$template_file) {
return null;
}
$hash = $this->newTransformHash();
$xform = id(new PhabricatorTransformedFile())->loadOneWhere(
'originalPHID = %s AND transform = %s',
$template_file->getPHID(),
$hash);
if (!$xform) {
return null;
}
return id(new PhabricatorFileQuery())
->setViewer($viewer)
->withPHIDs(array($xform->getTransformedPHID()))
->executeOne();
}
private function loadTemplateFile() {
if ($this->templateFile === null) {
$viewer = $this->getViewer();
$template = $this->getTemplate();
$macro = id(new PhabricatorMacroQuery())
->setViewer($viewer)
->withNames(array($template))
->needFiles(true)
->executeOne();
if (!$macro) {
return null;
}
$this->templateFile = $macro->getFile();
}
return $this->templateFile;
}
}

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