117 lines
2.8 KiB
PHP
117 lines
2.8 KiB
PHP
<?php
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namespace SilverStripe\Assets\Flysystem;
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use Exception;
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use League\Flysystem\Filesystem;
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/**
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* Simple Flysystem implementation of GeneratedAssetHandler for storing generated content
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*/
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class GeneratedAssetHandler implements \SilverStripe\Assets\Storage\GeneratedAssetHandler
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{
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/**
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* Flysystem store for files
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*
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* @var Filesystem
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*/
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protected $assetStore = null;
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/**
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* Assign the asset backend. This must be a filesystem
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* with an adapter of type {@see PublicAdapter}.
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*
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* @param Filesystem $store
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* @return $this
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*/
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public function setFilesystem(Filesystem $store)
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{
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$this->assetStore = $store;
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return $this;
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}
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/**
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* Get the asset backend
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*
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* @return Filesystem
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* @throws Exception
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*/
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public function getFilesystem()
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{
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if (!$this->assetStore) {
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throw new Exception("Filesystem misconfiguration error");
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}
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return $this->assetStore;
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}
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public function getContentURL($filename, $callback = null)
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{
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$result = $this->checkOrCreate($filename, $callback);
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if (!$result) {
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return null;
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}
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/** @var PublicAdapter $adapter */
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$adapter = $this
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->getFilesystem()
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->getAdapter();
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return $adapter->getPublicUrl($filename);
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}
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public function getContent($filename, $callback = null)
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{
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$result = $this->checkOrCreate($filename, $callback);
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if (!$result) {
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return null;
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}
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return $this
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->getFilesystem()
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->read($filename);
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}
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/**
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* Check if the file exists or that the $callback provided was able to regenerate it.
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*
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* @param string $filename
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* @param callable $callback
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* @return bool Whether or not the file exists
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* @throws Exception If an error has occurred during save
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*/
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protected function checkOrCreate($filename, $callback = null)
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{
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// Check if there is an existing asset
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if ($this->getFilesystem()->has($filename)) {
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return true;
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}
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if (!$callback) {
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return false;
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}
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// Invoke regeneration and save
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$content = call_user_func($callback);
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$this->setContent($filename, $content);
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return true;
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}
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public function setContent($filename, $content)
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{
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// Store content
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$result = $this
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->getFilesystem()
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->put($filename, $content);
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if (!$result) {
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throw new Exception("Error regenerating file \"{$filename}\"");
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}
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}
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public function removeContent($filename)
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{
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if ($this->getFilesystem()->has($filename)) {
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$handler = $this->getFilesystem()->get($filename);
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$handler->delete();
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}
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}
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}
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