wp-api-json-import.php

<?php
/**
 * Plugin Name: WP API JSON Import
 * Plugin URI:
 * Description:
 * Author: valeriosza, leobaiano, nicholas_io
 * Author URI:
 * Version: 0.0.2
 * License: GPLv2 or later
 * Text Domain: wpapijson-import
	 * Domain Path: /languages/
 */
if ( ! defined( 'ABSPATH' ) )
	exit; // Exit if accessed directly.

require_once( plugin_dir_path( __FILE__ ) . 'classes/class-settings.php' );

/**
 * WP API JSON Import
 *
 * @author   Leo Baiano <leobaiano@lbideias.com.br>
 */
class WP_API_JSON_Import {

	/**
	 * Plugin version.
	 *
	 * @var string
	 */
	const VERSION = '0.0.2';

	/**
	 * Plugin Slug
	 * @var string
	 */
	public static $plugin_slug = 'wpapijson-import';

	/**
	 * Instance of this class.
	 *
	 * @var object
	 */
	protected static $instance = null;

	/**
	 * Holds a instance for the Settings Class
	 */
	protected $settings;

	/**
	 * Holds the array of saved options
	 *
	 * @var string
	 */
	protected $options = array();

	/**
	 * Holds options name under settings api
	 *
	 * @var string
	 */
	protected $option_name;


	/**
	 * Initialize the plugin
	 */
	private function __construct() {
		// Load plugin text domain
		add_action( 'plugins_loaded', array( $this, 'load_plugin_textdomain' ) );

		// Load scripts js and styles css
		add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_scripts' ) );

		// Run Import
		add_action( 'my_hourly_event', array( $this, 'import_posts') );

		// Function AJAX impot posts
		add_action( 'wp_ajax_import_posts', array( $this, 'import_posts' ) );
		add_action( 'wp_ajax_nopriv_import_posts', array( $this, 'import_posts' ) );

		$this->settings = new WP_API_JSON_Import_Settings( self::$plugin_slug );

		$this->option_name 	= self::$plugin_slug . '-settings';
		$this->options 		= get_option( $this->option_name );

		// Load Importer API
		//require_once ABSPATH . 'wp-admin/includes/import.php';
		//$GLOBALS['wp_rest_import'] = new WP_API_JSON_Import();
		//register_importer('wpapijsonimport', __('WP API JSON Import', 'wpapijson-import'), __('Import links in OPML format.', 'wpapijson-import'), array($GLOBALS['wp_rest_import'], 'dispatch'));
	}

	/**
	 * Return an instance of this class.
	 *
	 * @return object A single instance of this class.
	 */
	public static function get_instance() {
		// If the single instance hasn't been set, set it now.
		if ( null == self::$instance ) {
			self::$instance = new self;
		}
		return self::$instance;
	}

	/**
	 * Load the plugin text domain for translation.
	 *
	 * @return void
	 */
	public function load_plugin_textdomain() {
		load_plugin_textdomain( self::$plugin_slug, false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );
	}

	/**
	 * Load scripts js and styles css
	 */
	public function enqueue_scripts() {
		// variables for main.js
		$params = array( 'ajaxUrl' => admin_url( 'admin-ajax.php' ) );

		// Load main CSS file
		wp_enqueue_style( self::$plugin_slug . '_css_main', plugins_url( 'assets/css/main.css', __FILE__ ), array(), null, 'all' );

		// Load main JS file
		wp_enqueue_script( self::$plugin_slug . '_js_main', plugins_url( 'assets/js/main.js', __FILE__ ), array( 'jquery' ), null, true );

		// WP Localize Script pass variables for main.js
		wp_localize_script( self::$plugin_slug . '_js_main', 'sale_post_variables', $params );
	}

	/**
	 * Fired when the plugin is activated.
	 *
	 * @param  boolean $network_wide True if WPMU superadmin uses
	 *                               "Network Activate" action, false if
	 *                               WPMU is disabled or plugin is
	 *                               activated on an individual blog.
	 *
	 * @return void
	 */
	public static function activate( $network_wide ) {
		if ( function_exists( 'is_multisite' ) && is_multisite() ) {
			if ( $network_wide  ) {

				// Get all blog ids
				$blog_ids = self::get_blog_ids();

				foreach ( $blog_ids as $blog_id ) {
					switch_to_blog( $blog_id );
					self::single_activate();
				}

				restore_current_blog();
			} else {
				self::single_activate();
			}
		} else {
			self::single_activate();
		}
	}

	 /**
	 * Fired for each blog when the plugin is activated.
	 *
	 * @return   void
	 */
	private static function single_activate() {
		if ( ! current_user_can( 'activate_plugins' ) ) {
			return;
		}

		if ( get_option('wpapijson-import_urls') !== false ) {
			update_option( 'wpapijson-import_urls',  array() );
		}

		update_option( 'wpapijson_import_version', self::VERSION );
	}

	/**
	 * Import Posts JSON
	 */
	public function import_posts() {
		$return = '';
		$message = '';
		$response = array();

		if ( !empty( $this->options['urls'] ) ) {
			// Get and sanitize data input
			$urls = sanitize_text_field( $this->options['urls'] );

			// Get json and converte array
			$posts = json_decode( file_get_contents( $urls ), true );

			// iterator count posts
			$i = 0;

			// loop in posts return
			if( count( $posts ) ){
				foreach( $posts as $post ) {
					if ( $i < 2 )
					$return .= '<p>' . $post['title'] . '</p>';
					$i++;
				}
			}

			if ( empty( $return ) )
				$message = 'No post found';

			$response = array( 'status' => 1, 'message' => $return );
		} else {
			$response = array( 'status' => 0, 'message' => __( 'No url registered, go the the tab "settings" and sign at least one url to import posts.', self::$plugin_slug ) );
		}
		echo json_encode( $response );
		die();
	}

	public static function schedule() {
		wp_schedule_event(time(), 'hourly', 'my_hourly_event');
	}
}

// Activate plugin when new blog is added.
register_activation_hook( __FILE__ , array( 'WP_API_JSON_Import', 'activate' ) );
register_activation_hook( __FILE__ , array( 'WP_API_JSON_Import', 'schedule' ));

add_action( 'plugins_loaded', array( 'WP_API_JSON_Import', 'get_instance' ), 0 );