<?php
namespace ProVM\Common\Service;

use Spyc as Yaml;
use Symfony\Component\Filesystem\Filesystem;

class Filemanager {
  protected $filesystem;
  protected $base_folder;
  public function __construct(Filesystem $filesystem, string $base_folder) {
    $this->filesystem = $filesystem;
    $this->base_folder = $base_folder;
  }
  protected function fullPath(string $filename): string {
    if ($this->filesystem->exists($filename)) {
      return $filename;
    }
    return implode(DIRECTORY_SEPARATOR, [
      $this->base_folder,
      $filename
    ]);
  }
  protected $folders;
  public function addFolder(string $name, string $folder) {
    if ($this->folders === null) {
      $this->folders = [];
    }
    $this->folders[$name] = $folder;
  }
  public function folder(string $name) {
    return new Filemanager($this->filesystem, $this->folders[$name]);
  }
  public function exists(string $filename) {
    return $this->filesystem->exists($this->fullPath($filename));
  }
  public function load(string $filename) {
    $filename = $this->fullPath($filename);
    if (!$this->exists($filename)) {
      return false;
    }
    $file = new \SplFileInfo($filename);
    $method = 'load' . ucfirst($file->getExtension());
    return $this->parseData($this->{$method}($filename));
  }
  protected function loadYml(string $filename) {
    return Yaml::YAMLLoad($filename);
  }
  protected function loadYaml(string $filename) {
    return $this->loadYml($filename);
  }
  protected function loadJson(string $filename) {
    return json_decode(trim(file_get_contents($filename)));
  }
  protected function loadPhp(string $filename) {
    return include $filename;
  }
  protected function parseData($data) {
    $temp = $data;
    if (is_array($temp)) {
      $is_object = false;
      foreach ($data as $i => $sub) {
        if (!is_numeric($i)) {
          $is_object = true;
        }
        $temp[$i] = $this->parseData($sub);
      }
      if ($is_object) {
        $temp = (object) $temp;
      }
    }
    return $temp;
  }
  public function save(string $filename, $data): bool {
    if (is_object($data)) {
      $data = (array) $data;
    }
    if (is_array($data)) {
      $data = Yaml::YAMLDump($data, false, false, true);
    }
    $filename = $this->fullPath($filename);
    return file_put_contents($filename, $data);
  }
}