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Mini Shell
<?php
namespace Nwidart\Modules\Activators;
use Illuminate\Cache\CacheManager;
use Illuminate\Config\Repository as Config;
use Illuminate\Container\Container;
use Illuminate\Contracts\Filesystem\FileNotFoundException;
use Illuminate\Filesystem\Filesystem;
use Nwidart\Modules\Contracts\ActivatorInterface;
use Nwidart\Modules\Module;
class FileActivator implements ActivatorInterface
{
/**
* Laravel cache instance
*
* @var CacheManager
*/
private $cache;
/**
* Laravel Filesystem instance
*
* @var Filesystem
*/
private $files;
/**
* Laravel config instance
*
* @var Config
*/
private $config;
/**
* @var string
*/
private $cacheKey;
/**
* @var string
*/
private $cacheLifetime;
/**
* Array of modules activation statuses
*
* @var array
*/
private $modulesStatuses;
/**
* File used to store activation statuses
*
* @var string
*/
private $statusesFile;
public function __construct(Container $app)
{
$this->cache = $app['cache'];
$this->files = $app['files'];
$this->config = $app['config'];
$this->statusesFile = $this->config('statuses-file');
$this->cacheKey = $this->config('cache-key');
$this->cacheLifetime = $this->config('cache-lifetime');
$this->modulesStatuses = $this->getModulesStatuses();
}
/**
* Get the path of the file where statuses are stored
*
* @return string
*/
public function getStatusesFilePath(): string
{
return $this->statusesFile;
}
/**
* @inheritDoc
*/
public function reset(): void
{
if ($this->files->exists($this->statusesFile)) {
$this->files->delete($this->statusesFile);
}
$this->modulesStatuses = [];
$this->flushCache();
}
/**
* @inheritDoc
*/
public function enable(Module $module): void
{
$this->setActiveByName($module->getName(), true);
}
/**
* @inheritDoc
*/
public function disable(Module $module): void
{
$this->setActiveByName($module->getName(), false);
}
/**
* @inheritDoc
*/
public function hasStatus(Module $module, bool $status): bool
{
if (!isset($this->modulesStatuses[$module->getName()])) {
return $status === false;
}
return $this->modulesStatuses[$module->getName()] === $status;
}
/**
* @inheritDoc
*/
public function setActive(Module $module, bool $active): void
{
$this->setActiveByName($module->getName(), $active);
}
/**
* @inheritDoc
*/
public function setActiveByName(string $name, bool $status): void
{
$this->modulesStatuses[$name] = $status;
$this->writeJson();
$this->flushCache();
}
/**
* @inheritDoc
*/
public function delete(Module $module): void
{
if (!isset($this->modulesStatuses[$module->getName()])) {
return;
}
unset($this->modulesStatuses[$module->getName()]);
$this->writeJson();
$this->flushCache();
}
/**
* Writes the activation statuses in a file, as json
*/
private function writeJson(): void
{
$this->files->put($this->statusesFile, json_encode($this->modulesStatuses, JSON_PRETTY_PRINT));
}
/**
* Reads the json file that contains the activation statuses.
* @return array
* @throws FileNotFoundException
*/
private function readJson(): array
{
if (!$this->files->exists($this->statusesFile)) {
return [];
}
return json_decode($this->files->get($this->statusesFile), true);
}
/**
* Get modules statuses, either from the cache or from
* the json statuses file if the cache is disabled.
* @return array
* @throws FileNotFoundException
*/
private function getModulesStatuses(): array
{
if (!$this->config->get('modules.cache.enabled')) {
return $this->readJson();
}
return $this->cache->remember($this->cacheKey, $this->cacheLifetime, function () {
return $this->readJson();
});
}
/**
* Reads a config parameter under the 'activators.file' key
*
* @param string $key
* @param $default
* @return mixed
*/
private function config(string $key, $default = null)
{
return $this->config->get('modules.activators.file.' . $key, $default);
}
/**
* Flushes the modules activation statuses cache
*/
private function flushCache(): void
{
$this->cache->forget($this->cacheKey);
}
}
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