<?php
namespace ILJ\Backend;

use ILJ\Core\Options;

/**
 * Handles Plugin Batch Information
 *
 * @package ILJ\Backend
 * @since   2.0.0
 */
class BatchInfo {

	/**
	 * Batch info instance
	 *
	 * @var   BatchInfo
	 * @since 2.0.0
	 */
	private static $instance;

	/**
	 * Batch data
	 *
	 * @var   array
	 * @since 2.0.0
	 */
	private $batch_data;

	protected function __construct() {
		$batch_data_default = array(
			'batch_build' => array(
				'last_update' => array(
					'batch_count'    => '',
					'batch_finished' => '',
					'last_update'    => '',
					'status'         => '',
				),
			),
		);

		$batch_data       = Options::getOption(Options::ILJ_OPTION_KEY_BATCH);
		$this->batch_data = wp_parse_args($batch_data, $batch_data_default);
	}

	/**
	 * Get data from batch data
	 *
	 * @since  2.0.0
	 * @param  string $key The key
	 * @return string|bool
	 */
	public static function get($key) {
		self::init();
		$batch_data = self::$instance->batch_data;
		if (array_key_exists($key, $batch_data)) {
			return $batch_data[$key];
		}
		return false;
	}

	/**
	 * Update batch data
	 *
	 * @since  2.0.0
	 * @param  string $key   The key
	 * @param  mixed  $value The value
	 * @return bool
	 */
	public static function update($key, $value) {
		 self::init();
		$batch_data         = self::$instance->batch_data;
		$batch_data[$key] = $value;
		Options::setOption(Options::ILJ_OPTION_KEY_BATCH, $batch_data);

		return true;
	}

	/**
	 * Init Environment- class
	 *
	 * @since  2.0.0
	 * @return void
	 */
	private static function init() {
		if (null === self::$instance) {
			self::$instance = new self();
		}
	}
}