<?php namespace DBDiff\Params;

use DBDiff\Exceptions\FSException;

use Symfony\Component\Yaml\Yaml;

class FSGetter implements ParamsGetter {

function __construct($params) {

$this->params = $params;

}

public function getParams() {

$params = new \StdClass;

$configFile = $this->getFile();

if ($configFile) {

try {

$config = Yaml::parse(file_get_contents($configFile));

foreach ($config as $key => $value) {

$this->setIn($params, $key, $value);

}

} catch (Exceptions $e) {

throw new FSException("Error parsing config file");

}

}

return $params;

}

protected function getFile() {

$configFile = false;

if (isset($this->params->config)) {

$configFile = $this->params->config;

if (!file_exists($configFile)) {

throw new FSException("Config file not found");

}

} else {

$candidates = [

getcwd() . '/.dbdiff', // legacy — checked first for backwards compatibility

getcwd() . '/dbdiff.yml', // recommended going forwards

getcwd() . '/.dbdiff.yml',

getcwd() . '/dbdiff.yaml',

];

foreach ($candidates as $candidate) {

if (file_exists($candidate)) {

$configFile = $candidate;

break;

}

}

}

return $configFile;

}

protected function setIn($obj, $key, $value) {

if (strpos($key, '-') !== false) {

$parts = explode('-', $key);

$array = &$obj->$parts[0];

$array[$parts[1]] = $value;

} else {

$obj->$key = $value;

}

}

}