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<?php
/*
* This file is part of the Fxp Composer Asset Plugin package.
*
* (c) François Pluchino <francois.pluchino@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Fxp\Composer\AssetPlugin\Config;
use Fxp\Composer\AssetPlugin\Exception\InvalidArgumentException;
/**
* Helper of package config.
*
* @author François Pluchino <francois.pluchino@gmail.com>
*/
final class Config
{
/**
* @var array
*/
private $config;
/**
* @var array
*/
private $cacheEnv = array();
/**
* Constructor.
*
* @param array $config The config
*/
public function __construct(array $config)
{
$this->config = $config;
}
/**
* Get the array config value.
*
* @param string $key The config key
* @param array $default The default value
*
* @return array
*/
public function getArray($key, array $default = array())
{
return $this->get($key, $default);
}
/**
* Get the config value.
*
* @param string $key The config key
* @param null|mixed $default The default value
*
* @return null|mixed
*/
public function get($key, $default = null)
{
if (\array_key_exists($key, $this->cacheEnv)) {
return $this->cacheEnv[$key];
}
$envKey = $this->convertEnvKey($key);
$envValue = getenv($envKey);
if (false !== $envValue) {
return $this->cacheEnv[$key] = $this->convertEnvValue($envValue, $envKey);
}
return \array_key_exists($key, $this->config)
? $this->config[$key]
: $default;
}
/**
* Convert the config key into environment variable.
*
* @param string $key The config key
*
* @return string
*/
private function convertEnvKey($key)
{
return 'FXP_ASSET__'.strtoupper(str_replace('-', '_', $key));
}
/**
* Convert the value of environment variable into php variable.
*
* @param string $value The value of environment variable
* @param string $environmentVariable The environment variable name
*
* @return array|bool|int|string
*/
private function convertEnvValue($value, $environmentVariable)
{
$value = trim(trim(trim($value, '\''), '"'));
if ($this->isBoolean($value)) {
$value = $this->convertBoolean($value);
} elseif ($this->isInteger($value)) {
$value = $this->convertInteger($value);
} elseif ($this->isJson($value)) {
$value = $this->convertJson($value, $environmentVariable);
}
return $value;
}
/**
* Check if the value of environment variable is a boolean.
*
* @param string $value The value of environment variable
*
* @return bool
*/
private function isBoolean($value)
{
$value = strtolower($value);
return \in_array($value, array('true', 'false', '1', '0', 'yes', 'no', 'y', 'n'), true);
}
/**
* Convert the value of environment variable into a boolean.
*
* @param string $value The value of environment variable
*
* @return bool
*/
private function convertBoolean($value)
{
return \in_array($value, array('true', '1', 'yes', 'y'), true);
}
/**
* Check if the value of environment variable is a integer.
*
* @param string $value The value of environment variable
*
* @return bool
*/
private function isInteger($value)
{
return ctype_digit(trim($value, '-'));
}
/**
* Convert the value of environment variable into a integer.
*
* @param string $value The value of environment variable
*
* @return bool
*/
private function convertInteger($value)
{
return (int) $value;
}
/**
* Check if the value of environment variable is a string JSON.
*
* @param string $value The value of environment variable
*
* @return bool
*/
private function isJson($value)
{
return 0 === strpos($value, '{') || 0 === strpos($value, '[');
}
/**
* Convert the value of environment variable into a json array.
*
* @param string $value The value of environment variable
* @param string $environmentVariable The environment variable name
*
* @return array
*/
private function convertJson($value, $environmentVariable)
{
$value = json_decode($value, true);
if (json_last_error()) {
throw new InvalidArgumentException(sprintf('The "%s" environment variable isn\'t a valid JSON', $environmentVariable));
}
return $value;
}
}