<?php

namespace Trinity\Bundle\VarsEditorBundle\Service;

use Symfony\Component\DependencyInjection\Container;
use Symfony\Component\Filesystem\Filesystem;
use Symfony\Component\Yaml\Yaml;

class Config
{
    protected $filesystem;

    protected $config;

    protected $file;

    public function __construct(Container $container)
    {
        $this->filesystem = new Filesystem();
        $this->file = $container->getParameter('trinity_vars_editor.file');
    }

    protected function getConfig()
    {
        if (!empty($this->config)) {
            return $this->config;
        }

        return $this->config = Yaml::parse($this->file);
    }

    public function get($key, $default = null, $locale = null)
    {
        if (empty($this->file)) {
            return $default;
        }

        if (!$this->filesystem->exists($this->file)) {
            return $default;
        }

        $config = $this->getConfig();

        if (empty($config['fieldsets']) || (!empty($config['fieldsets']) && !is_array($config['fieldsets']))) {
            return $default;
        }

        foreach ($config['fieldsets'] as $fieldset) {
            if (!is_null($locale) && isset($fieldset['tabs'])) {
                if (isset($fieldset['tabs'][$locale])) {
                    foreach ($fieldset['tabs'][$locale]['vars'] as $var) {
                        if (isset($var['key'], $var['value'])) {
                            if ($var['key'] === $key) {
                                return $var['value'];
                            }
                        }
                    }
                }
            } elseif (!empty($fieldset['vars'])) {
                foreach ($fieldset['vars'] as $var) {
                    if (isset($var['key'], $var['value'])) {
                        if ($var['key'] === $key) {
                            return $var['value'];
                        }
                    }
                }
            }
        }

        return $default;
    }
}