<?php

	class App_Service_JsonConfiguration
	{
		const CONFIGURATION_FOLDER_PATH = APPLICATION_PATH . "/configs/";

		protected $_config;
		protected $_writer;

		public function __construct($nomeFile)
		{

			$this->initializeConfigurationFile($nomeFile);
		}

		private function initializeConfigurationFile($name)
		{

			$filePath = self::CONFIGURATION_FOLDER_PATH . $name . ".json";
			if (!file_exists($filePath)) throw new Zend_Exception("File di configurazione \"$name.json\" non trovato");
			$readerName = strtoupper($name) . '_CONFIG' . '_READER';
			$writerName = strtoupper($name) . '_CONFIG' . '_WRITER';
			//READER CONFIG FILE
			if (Zend_Registry::isRegistered($readerName)){
				$this->_config = Zend_Registry::get($readerName);

				return;
			}
			$this->_config = new Zend_Config_Json($filePath, null, array('skipExtends' => true, 'allowModifications' => true));
			Zend_Registry::set($readerName, $this->_config);
			//WRITER
			if (Zend_Registry::isRegistered($writerName)){
				$this->_writer = Zend_Registry::get($writerName);

				return;
			}
			$this->_writer = new Zend_Config_Writer_Json(array('config' => $this->_config, 'filename' => $filePath));
			$this->_writer->setPrettyPrint(true);
			Zend_Registry::set($writerName, $this->_writer);
		}

		/**
		 * Aggiorna l'oggetto config ricaricando tutte le impostazioni memorizzate
		 * nel file config.ini
		 */
		public function update()
		{

			$this->_config = new Zend_Config_Json(APPLICATION_PATH . '/configs/config.ini', null, array('skipExtends' => true, 'allowModifications' => true));
			Zend_Registry::set('config', $this->_config);
		}

		public function write()
		{

			$this->_writer->config = $this->_config;
			$this->_writer->write();
		}

		public function set($key, $value)
		{

			$this->_config->__set($key, $value);
			$this->_writer->write();
		}

		/**
		 * Restituisce il valore del parametro richiesto
		 *
		 * @param  string $name
		 *
		 * @return string
		 */
		public function get($name)
		{

			return $this->_config->get($name);
		}

		/**
		 * Elimina il parametro richiesto se esistente
		 *
		 * @param  string $param
		 *
		 * @return boolean
		 */
		public function delete($param)
		{
			if (!$this->_config->get($param)) return false;
			$this->_config->__unset($param);
			$this->write();

			return true;
		}

		public function getAllParams()
		{

			$data = array();
			foreach ($this->_config as $key => $value){
				$data[$key] = $value;
			}

			return $data;
		}

	}