DuplicateImages::update

public function update(bool $needSave = false): string
{
	$srcForReplace = [];
	if (isset($this->manifest['nodes']) && is_array($this->manifest['nodes']))
	{
		foreach ($this->manifest['nodes'] as $selector => $node)
		{
			if (in_array($node['type'], self::IMG_TYPES, true))
			{
				$nodeClass = NodeType::getClassName($node['type']);
				$previousValues = call_user_func([$nodeClass, 'getNode'], $this->block, $selector);

				foreach ($previousValues as $previousValue)
				{
					if (!($previousValue['id'] ?? null) && !($previousValue['id2x'] ?? null))
					{
						continue;
					}

					if (
						($previousValue['id'] && !File::getFilePath($previousValue['id']))
						|| ($previousValue['id2x'] && !File::getFilePath($previousValue['id2x']))
					)
					{
						continue;
					}

					$hostUrl = '//' . Manager::getHttpHost();

					$newSrc = File::getFilePath($previousValue['id']);
					$newSrc = Manager::getUrlFromFile($newSrc);
					$previousSrc =
						$previousValue['isLazy'] === 'Y'
							? $previousValue['lazyOrigSrc']
							: $previousValue['src']
					;
					if ($previousSrc !== $newSrc)
					{
						$srcForReplace[$previousSrc] = $newSrc;

						// add urls w/o host url too
						if (strpos($newSrc, $hostUrl) === 0)
						{
							$srcForReplace[str_replace($hostUrl, '', $previousSrc)] =
								str_replace($hostUrl, '', $newSrc);
						}
					}

					if ($previousValue['id2x'])
					{
						$newSrc2x = File::getFilePath($previousValue['id2x']);
						$newSrc2x = Manager::getUrlFromFile($newSrc2x);
						$previousSrc2x =
							$previousValue['isLazy'] === 'Y'
								? $previousValue['lazyOrigSrc2x']
								: $previousValue['src2x']
						;
						if ($previousSrc2x !== $newSrc2x)
						{
							$srcForReplace[$previousSrc2x] = $newSrc2x;

							// add urls w/o host url too
							if (strpos($newSrc2x, $hostUrl) === 0)
							{
								$srcForReplace[str_replace($hostUrl, '', $previousSrc2x)] =
									str_replace($hostUrl, '', $newSrc2x);
							}
						}
					}
				}
			}
		}
	}

	if (!empty($srcForReplace))
	{
		$this->content = str_replace(
			array_keys($srcForReplace),
			array_values($srcForReplace),
			$this->content
		);

		if ($needSave)
		{
			$this->block->saveContent($this->content);
			$this->block->save();
		}
	}

	return $this->content;
}