<?php
namespace ktk\MusicServe;

class SimpleDB {
  static private $data_file = "sdb.ini";
  static private $data = array();
  // CORE
  static public function onInit() {
    if (!file_exists(self::$data_file)) {
      if ($fp = fopen(self::$data_file, 'w')) {
        fwrite($fp, "");
        fclose($fp);
      } else {
        MusicServe::reportError(__CLASS__, __FUNCTION__, "Could not create \"".self::$data_file."\", please check your permissions!");
      }
      return NULL;
    }
    self::$data = parse_ini_file(self::$data_file, true);
  }
  static public function onClose() {
    if ($fp = fopen(self::$data_file, 'w')) {
      self::writeData_r($fp, self::$data);
      fclose($fp);
    } else {
        MusicServe::reportError(__CLASS__, __FUNCTION__, "Could not write to \"".self::$data_file."\", please check your permissions!");
      return NULL;
    }
  }
  // ACCESS
  static public function getData($var) {
    if (self::$data[$var]) {
      return self::$data[$var];
    } else {
      return NULL;
    }
  }
  static public function storeData($var, $value) {
    self::$data[$var] = $value;
  }
  // INTERNAL
  static private function writeData_r($handle, $data) {
    foreach ($data as $key=>$value) {
      if (is_array($value)) {
        fwrite($handle, '['.$key.']'.PHP_EOL);
        self::writeData_r($handle, $value);
      } else {
        fwrite($handle, $key.'='.$value.PHP_EOL);
      }
    }
  }
}
?>