<?php

/*
 * A class to manage utilities
 *
 * @since 0.2
 */
class Lingotek_Utilities {
	public $pllm, $lgtm; // Polylang and Lingotek models

	/*
	 * Constructor
	 *
	 * @since 0.2
	 */
	public function __construct() {
		$this->pllm = $GLOBALS['polylang']->model;
		$this->lgtm = $GLOBALS['wp_lingotek']->model;

		add_action('admin_enqueue_scripts', array(&$this, 'admin_enqueue_scripts'));
		add_action('wp_ajax_lingotek_progress_disassociate' , array(&$this, 'ajax_utility_disassociate'));
		add_action('wp_ajax_lingotek_progress_disassociate_and_delete' , array(&$this, 'ajax_utility_disassociate'));
	}

	/*
	 * run an array of utilities
	 *
	 * @since 0.2
	 *
	 * @param array $utilities array of utility names to run
	 * @return array
	 */
	public function run_utilities($utilities){
		$results = array();
		if(!empty($utilities) && is_array($utilities)){
			foreach($utilities as $utility_name) {
				$results[] = $this->run_utility($utility_name);
			}
		}
		return $results;
	}

	/*
	 * run a specified utility by name
	 *
	 * @since 0.2
	 *
	 * @param string $utilty_name
	 * @return boolean $result
	 */
	public function run_utility($utility_name) {
		$result = 0;
		switch ($utility_name) {
			case "set_default_language":
			case "utility_set_default_language":
				$result = $this->utility_set_default_language();
				break;
			default:
				break;
		}
		return $result;
	}

	// Utilities

	/*
	 * fills existing posts & terms with default language
	 *
	 * @since 0.2
	 */
	public function utility_set_default_language() {
		if ($nolang = $this->pllm->get_objects_with_no_lang()) {
			if (!empty($nolang['posts']))
				$this->pllm->set_language_in_mass('post', $nolang['posts'], $this->pllm->options['default_lang']);
			if (!empty($nolang['terms']))
				$this->pllm->set_language_in_mass('term', $nolang['terms'], $this->pllm->options['default_lang']);
		}
		add_settings_error('lingotek_utilities', 'utilities', __('The language update utility ran successfully.', 'lingotek-translation'), 'updated');
		return 0;
	}

	/*
	 * get all (associated) Lingotek document ids
	 *
	 * @since 0.2
	 *
	 * @return array
	 */
	static public function get_all_document_ids() {
		$terms = get_terms(array('post_translations', 'term_translations'));
		foreach ($terms as $term) {
			$desc_arr = unserialize($term->description);
			if (!empty($desc_arr['lingotek']))
				$ids[] = $term->slug;
		}

		return empty($ids) ? array() : $ids;
	}

	/*
	 * outputs javascript data for progress.js
	 *
	 * @since 0.2
	 */
	public function admin_enqueue_scripts() {
		if (!empty($_POST['utility_disassociate'])) {
			$ids = self::get_all_document_ids();
			if (!empty($ids)) {
				wp_localize_script('lingotek_progress', 'lingotek_data', array(
					'action'   => 'disassociate' . ('on' == $_POST['utility_delete_documents'] ? '_and_delete' : ''),
					'taxonomy' => '',
					'sendback' => wp_get_referer(),
					'ids'      => $ids, // Lingotek document ids
					'warning'  => '',
					'nonce'    => wp_create_nonce('lingotek_progress')
				));
			}
		}
	}

	/*
	 * ajax response to disassociate documents and showing progress
	 *
	 * @since 0.2
	 */
	public function ajax_utility_disassociate() {
		check_ajax_referer('lingotek_progress', '_lingotek_nonce');
		if ($group = $this->lgtm->get_group_by_id($_POST['id']))
			$group->disassociate('lingotek_progress_disassociate_and_delete' == $_POST['action']);
		die();
	}
}