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<?php
/*
Plugin Name: Object Sync for Salesforce
Description: Object Sync for Salesforce maps and syncs data between Salesforce objects and WordPress objects.
Version: 1.9.4
Author: MinnPost
Author URI: https://code.minnpost.com
License: GPL2+
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: object-sync-for-salesforce
*/

/**
 * Start up the Object Sync for Salesforce plugin; initialize parameters and classes
 */
class Object_Sync_Salesforce {

	/**
	* @var object
	* Global object of `$wpdb`, the WordPress database
	*/
	private $wpdb;

	/**
	* @var string
	* The plugin's slug so we can include it when necessary
	*/
	private $slug;

	/**
	* @var string
	* The plugin's option prefix
	*/
	private $option_prefix;

	/**
	* @var array
	* Login credentials for the Salesforce API; comes from wp-config or from the plugin settings
	*/
	private $login_credentials;

	/**
	* @var array
	* Array of what classes in the plugin can be scheduled to occur with `wp_cron` events
	*/
	public $schedulable_classes;

	/**
	* @var string
	* Current version of the plugin
	*/
	private $version;

	/**
	* @var object
	*/
	private $queue;

	/**
	* @var bool
	*/
	private $load;

	/**
	* @var object
	*/
	private $activated;

	/**
	* @var object
	* Load and initialize the Object_Sync_Sf_Logging class
	*/
	private $logging;

	/**
	* @var object
	* Load and initialize the Object_Sync_Sf_Mapping class
	*/
	public $mappings;

	/**
	* @var object
	* Load and initialize the Object_Sync_Sf_WordPress class
	*/
	private $wordpress;

	/**
	* @var array
	* Load and initialize the API on the Object_Sync_Sf_Salesforce class.
	* This contains the Salesforce API methods
	*/
	public $salesforce;

	/**
	* @var object
	* Load and initialize the Object_Sync_Sf_Salesforce_Push class
	*/
	private $push;

	/**
	* @var object
	* Load and initialize the Object_Sync_Sf_Salesforce_Pull class
	*/
	private $pull;

	/**
	* @var object
	* Load and initialize the Object_Sync_Sf_Rest class
	*/
	private $rest;

	/**
	 * @var object
	 * Static property to hold an instance of the class; this seems to make it reusable
	 *
	 */
	static $instance = null;

	/**
	* Load the static $instance property that holds the instance of the class.
	* This instance makes the class reusable by other plugins
	*
	* @return object
	*   The sfapi object if it is authenticated (empty, otherwise)
	*
	*/
	static public function get_instance() {
		if ( null === self::$instance ) {
			self::$instance = new Object_Sync_Salesforce();
		}
		return self::$instance;
	}

	/**
	 * Constructor that sets up the parameters to pass to all the other classes, and the methods that call the other classes
	 *
	 * @return void
	 */
	protected function __construct() {

		global $wpdb;

		$this->wpdb              = $wpdb;
		$this->version           = '1.9.4';
		$this->slug              = 'object-sync-for-salesforce';
		$this->option_prefix     = 'object_sync_for_salesforce_';
		$this->login_credentials = $this->get_login_credentials();

		$this->schedulable_classes = array(
			'salesforce_push' => array(
				'label'    => 'Push to Salesforce',
				'class'    => 'Object_Sync_Sf_Salesforce_Push',
				'callback' => $this->option_prefix . 'push_record',
			),
			'salesforce_pull' => array(
				'label'       => 'Pull from Salesforce',
				'class'       => 'Object_Sync_Sf_Salesforce_Pull',
				'initializer' => $this->option_prefix . 'pull_check_records',
				'callback'    => $this->option_prefix . 'pull_process_records',
			),
		);

		// users can modify the list of schedulable classes
		$this->schedulable_classes = apply_filters( $this->option_prefix . 'modify_schedulable_classes', $this->schedulable_classes );

		/*
		 * example to modify the array of classes by adding one and removing one
		 * add_filter( 'object_sync_for_salesforce_modify_schedulable_classes', 'modify_schedulable_classes', 10, 1 );
		 * function modify_schedulable_classes( $schedulable_classes ) {
		 * 	$schedulable_classes = array(
		 * 		'salesforce_push' => array(
		 * 		    'label' => 'Push to Salesforce',
		 * 		    'class' => 'Object_Sync_Sf_Salesforce_Push',
		 * 		    'callback' => 'salesforce_push_sync_rest',
		 * 		),
		 * 		'wordpress' => array( // WPCS: spelling ok.
		 * 		    'label' => 'WordPress',
		 * 		    'class' => 'Object_Sync_Sf_WordPress',
		 * 		),
		 * 		'salesforce' => array(
		 * 		    'label' => 'Salesforce Authorization',
		 * 		    'class' => 'Object_Sync_Sf_Salesforce',
		 * 		),
		 * 	);
		 * 	return $schedulable_classes;
		 * }
		*/

		$this->queue = $this->queue( $this->wpdb, $this->version, $this->slug, $this->option_prefix, $this->schedulable_classes );

		$this->activated = $this->activate( $this->wpdb, $this->version, $this->slug, $this->option_prefix, $this->schedulable_classes, $this->queue );

		// Run non-activation things. We do this early because ActionScheduler has to have access to plugins_loaded with priority of zero.
		add_action( 'plugins_loaded', array( $this, 'run' ), -10 );

	}

	/**
	 * run the plugin, independent of activation methods.
	 *
	 */
	public function run() {

		$this->load = $this->load( $this->wpdb, $this->version, $this->slug, $this->option_prefix );

		$this->deactivate( $this->wpdb, $this->version, $this->slug, $this->option_prefix, $this->schedulable_classes, $this->queue );

		$this->logging = $this->logging( $this->wpdb, $this->version, $this->slug, $this->option_prefix );

		$this->mappings = $this->mappings( $this->wpdb, $this->version, $this->slug, $this->option_prefix, $this->logging );

		$this->wordpress  = $this->wordpress( $this->wpdb, $this->version, $this->slug, $this->option_prefix, $this->mappings, $this->logging );
		$this->salesforce = $this->salesforce_get_api();

		$this->push = $this->push( $this->wpdb, $this->version, $this->login_credentials, $this->slug, $this->option_prefix, $this->wordpress, $this->salesforce, $this->mappings, $this->logging, $this->schedulable_classes, $this->queue );

		$this->pull = $this->pull( $this->wpdb, $this->version, $this->login_credentials, $this->slug, $this->option_prefix, $this->wordpress, $this->salesforce, $this->mappings, $this->logging, $this->schedulable_classes, $this->queue );

		$this->rest = $this->rest( $this->wpdb, $this->version, $this->slug, $this->option_prefix, $this->wordpress, $this->salesforce, $this->mappings, $this->push, $this->pull );

		$this->load_admin( $this->wpdb, $this->version, $this->login_credentials, $this->slug, $this->option_prefix, $this->wordpress, $this->salesforce, $this->mappings, $this->push, $this->pull, $this->logging, $this->schedulable_classes, $this->queue );
	}

	/**
	 * Load immediately required things
	 *
	 * @param object $wpdb
	 * @param string $version
	 * @param string $slug
	 * @param string $option_prefix
	 * @return bool true
	 *
	 */
	private function load( $wpdb, $version, $slug, $option_prefix ) {
		require_once plugin_dir_path( __FILE__ ) . 'vendor/autoload.php';
		return true;
	}

	/**
	 * Get queue instance.
	 *
	 * @param object $wpdb
	 * @param string $version
	 * @param string $slug
	 * @param string $option_prefix
	 * @param array $schedulable_classes
	 * @return Object_Sync_Sf_Queue
	 */
	private function queue( $wpdb, $version, $slug, $option_prefix, $schedulable_classes ) {
		require_once plugin_dir_path( __FILE__ ) . 'classes/class-object-sync-sf-queue.php';
		$queue = new Object_Sync_Sf_Queue( $wpdb, $version, $slug, $option_prefix, $schedulable_classes );
		return $queue;
	}

	/**
	 * Log events
	 *
	 * @param object $wpdb
	 * @param string $version
	 * @param string $slug
	 * @param string $option_prefix
	 *
	 * @return object
	 *   Instance of Object_Sync_Sf_Logging
	 */
	private function logging( $wpdb, $version, $slug, $option_prefix ) {
		require_once plugin_dir_path( __FILE__ ) . 'classes/logging.php';
		$logging = new Object_Sync_Sf_Logging( $wpdb, $version, $slug, $option_prefix );
		return $logging;
	}

	/**
	 * Map the Salesforce and WordPress objects and fields to each other
	 *
	 * @param object $wpdb
	 * @param string $version
	 * @param string $slug
	 * @param string $option_prefix
	 * @param object $logging
	 *
	 * @return object
	 *   Instance of Object_Sync_Sf_Mapping
	 */
	private function mappings( $wpdb, $version, $slug, $option_prefix, $logging ) {
		require_once( plugin_dir_path( __FILE__ ) . 'classes/salesforce_mapping.php' );
		$mappings = new Object_Sync_Sf_Mapping( $wpdb, $version, $slug, $logging, $option_prefix );
		return $mappings;
	}

	/**
	* Private helper to load methods for manipulating core WordPress data across the plugin
	*
	* @param object $wpdb
	* @param string $version
	* @param string $slug
	* @param string $option_prefix
	* @param object $mappings
	* @param object $logging
	*
	* @return object
	*   Instance of Object_Sync_Sf_WordPress
	*/
	private function wordpress( $wpdb, $version, $slug, $option_prefix, $mappings, $logging ) {
		require_once plugin_dir_path( __FILE__ ) . 'classes/wordpress.php';
		$wordpress = new Object_Sync_Sf_WordPress( $wpdb, $version, $slug, $mappings, $logging, $option_prefix );
		return $wordpress;
	}

	/**
	* Public helper to load the Salesforce API and see if it is authenticated.
	* This is public so other plugins can access the same SF API instance
	*
	* @return array
	*   Whether Salesforce is authenticated (boolean)
	*   The sfapi object if it is authenticated (empty, otherwise)
	*/
	public function salesforce_get_api() {
		require_once( plugin_dir_path( __FILE__ ) . 'classes/salesforce.php' );
		require_once( plugin_dir_path( __FILE__ ) . 'classes/salesforce_query.php' ); // this can be used to generate soql queries, but we don't often need it so it gets initialized whenever it's needed

		$soap_available = $this->is_soap_available();
		$soap_loaded    = $this->is_soap_loaded();

		$consumer_key        = $this->login_credentials['consumer_key'];
		$consumer_secret     = $this->login_credentials['consumer_secret'];
		$login_url           = $this->login_credentials['login_url'];
		$callback_url        = $this->login_credentials['callback_url'];
		$authorize_path      = $this->login_credentials['authorize_path'];
		$token_path          = $this->login_credentials['token_path'];
		$rest_api_version    = $this->login_credentials['rest_api_version'];
		$slug                = $this->slug;
		$option_prefix       = $this->option_prefix;
		$wordpress           = $this->wordpress;
		$logging             = $this->logging;
		$schedulable_classes = $this->schedulable_classes;
		$is_authorized       = false;
		$sfapi               = '';
		if ( $consumer_key && $consumer_secret ) {
			$sfapi = new Object_Sync_Sf_Salesforce( $consumer_key, $consumer_secret, $login_url, $callback_url, $authorize_path, $token_path, $rest_api_version, $wordpress, $slug, $logging, $schedulable_classes, $option_prefix );
			if ( true === $sfapi->is_authorized() ) {
				$is_authorized = true;
			}
		}

		return array(
			'is_authorized'  => $is_authorized,
			'sfapi'          => $sfapi,
			'soap_available' => $soap_available,
			'soap_loaded'    => $soap_loaded,
		);
	}

	/**
	 * What to do upon activation of the plugin
	 *
	 * @param object $wpdb
	 * @param string $version
	 * @param string $slug
	 * @param string $option_prefix
	 * @param array $schedulable_classes
	 * @param object $queue
	 *
	 * @return object
	 *   Instance of Object_Sync_Sf_Activate
	 */
	private function activate( $wpdb, $version, $slug, $option_prefix, $schedulable_classes, $queue ) {
		require_once plugin_dir_path( __FILE__ ) . 'classes/activate.php';
		$activate = new Object_Sync_Sf_Activate( $wpdb, $version, $slug, $option_prefix, $schedulable_classes, $queue );
		return $activate;
	}

	/**
	 * What to do upon deactivation of the plugin
	 *
	 * @param object $wpdb
	 * @param string $version
	 * @param string $slug
	 * @param string $option_prefix
	 * @param array $schedulable_classes
	 * @param object $queue
	 *
	 * @return object
	 *   Instance of Object_Sync_Sf_Deactivate
	 */
	private function deactivate( $wpdb, $version, $slug, $option_prefix, $schedulable_classes, $queue ) {
		require_once plugin_dir_path( __FILE__ ) . 'classes/deactivate.php';
		$deactivate = new Object_Sync_Sf_Deactivate( $wpdb, $version, $slug, $schedulable_classes, $option_prefix, $queue );
	}


	/**
	 * Methods to push data from WordPress to Salesforce
	 *
	 * @param object $wpdb
	 * @param string $version
	 * @param array $login_credentials
	 * @param string $slug
	 * @param string $object_prefix
	 * @param object $wordpress
	 * @param object $salesforce
	 * @param object $mappings
	 * @param object $logging
	 * @param array $schedulable_classes
	 *
	 * @return object
	 *   Instance of Object_Sync_Sf_Salesforce_Push
	 */
	private function push( $wpdb, $version, $login_credentials, $slug, $option_prefix, $wordpress, $salesforce, $mappings, $logging, $schedulable_classes, $queue ) {
		require_once plugin_dir_path( __FILE__ ) . 'classes/salesforce_push.php';
		$push = new Object_Sync_Sf_Salesforce_Push( $wpdb, $version, $login_credentials, $slug, $wordpress, $salesforce, $mappings, $logging, $schedulable_classes, $queue, $option_prefix );
		return $push;
	}

	/**
	 * Methods to pull data from Salesforce to WordPress
	 *
	 * @param object $wpdb
	 * @param string $version
	 * @param array $login_credentials
	 * @param string $slug
	 * @param string $option_prefix
	 * @param object $wordpress
	 * @param object $salesforce
	 * @param object $mappings
	 * @param object $logging
	 * @param array $schedulable_classes
	 * @return object
	 *   Instance of Object_Sync_Sf_Salesforce_Pull
	 */
	private function pull( $wpdb, $version, $login_credentials, $slug, $option_prefix, $wordpress, $salesforce, $mappings, $logging, $schedulable_classes, $queue ) {
		require_once plugin_dir_path( __FILE__ ) . 'classes/salesforce_pull.php';
		$pull = new Object_Sync_Sf_Salesforce_Pull( $wpdb, $version, $login_credentials, $slug, $wordpress, $salesforce, $mappings, $logging, $schedulable_classes, $queue, $option_prefix );
		return $pull;
	}

	/**
	* Load the rest class.
	* This handles REST API methods
	*
	* @param object $wpdb
	* @param string $version
	* @param array $login_credentials
	* @param string $slug
	* @param string $option_prefix
	* @param object $wordpress
	* @param object $salesforce
	* @param object $mappings
	* @param object $push
	* @param object $pull
	* @param object $logging
	* @param array $schedulable_classes
	* @param object $queue
	* @return object $admin
	*   Instance of Object_Sync_Sf_Rest
	*
	*/
	private function rest( $wpdb, $version, $slug, $option_prefix, $wordpress, $salesforce, $mappings, $push, $pull ) {
		require_once( plugin_dir_path( __FILE__ ) . 'classes/class-object-sync-sf-rest.php' );
		$rest = new Object_Sync_Sf_Rest( $wpdb, $version, $slug, $option_prefix, $wordpress, $salesforce, $mappings, $push, $pull );
		return $rest;
	}

	/**
	* Load the admin class.
	* This also creates admin menu, unless the plugin that calls this library has indicated that it has its own menu
	*
	* @param object $wpdb
	* @param string $version
	* @param array $login_credentials
	* @param string $slug
	* @param string $option_prefix
	* @param object $wordpress
	* @param object $salesforce
	* @param object $mappings
	* @param object $push
	* @param object $pull
	* @param object $logging
	* @param array $schedulable_classes
	* @param object $queue
	* @return object $admin
	*   Instance of Object_Sync_Sf_Admin
	*
	*/
	private function load_admin( $wpdb, $version, $login_credentials, $slug, $option_prefix, $wordpress, $salesforce, $mappings, $push, $pull, $logging, $schedulable_classes, $queue ) {
		require_once( plugin_dir_path( __FILE__ ) . 'classes/admin.php' );
		$admin = new Object_Sync_Sf_Admin( $wpdb, $version, $login_credentials, $slug, $wordpress, $salesforce, $mappings, $push, $pull, $logging, $schedulable_classes, $queue, $option_prefix );
		add_action( 'admin_menu', array( $admin, 'create_admin_menu' ) );
		add_action( 'admin_enqueue_scripts', array( $this, 'admin_scripts_and_styles' ) );
		add_action( 'plugins_loaded', array( $this, 'textdomain' ) );
		add_filter( 'plugin_action_links', array( $this, 'plugin_action_links' ), 10, 5 );
		return $admin;
	}

	/**
	* Display a Settings link on the main Plugins page
	*
	* @param array $links
	* @param string $file
	* @return array $links
	*   These are the links that go with this plugin's entry
	*/
	public function plugin_action_links( $links, $file ) {
		if ( plugin_basename( __FILE__ ) === $file ) {
			$settings = '<a href="' . get_admin_url() . 'options-general.php?page=object-sync-salesforce-admin">' . __( 'Settings', 'object-sync-for-salesforce' ) . '</a>';
			// make the 'Settings' link appear first
			array_unshift( $links, $settings );
		}
		return $links;
	}


	/**
	* Admin styles. Load the CSS and JavaScript for the plugin's settings
	*
	* @return void
	*/
	public function admin_scripts_and_styles() {

		// I think some developers might not want to bother with select2 or selectwoo, so let's allow that to be changeable
		$select_library = apply_filters( $this->option_prefix . 'select_library', 'selectwoo' );

		/*
		 * example to modify the select library
		 * add_filter( 'object_sync_for_salesforce_select_library', 'select_library', 10, 1 );
		 * function select_library( $select_library ) {
		 * 	$select_library = 'select2';
		 *  // this could also be empty; in that case we would just use default browser select
		 * 	return $select_library;
		 * }
		*/

		$javascript_dependencies = array( 'jquery' );
		$css_dependencies        = array();
		if ( '' !== $select_library ) {
			wp_enqueue_script( $select_library . 'js', plugins_url( 'assets/js/vendor/' . $select_library . '.min.js', __FILE__ ), array( 'jquery' ), filemtime( plugin_dir_path( __FILE__ ) . 'assets/js/vendor/' . $select_library . '.min.js' ), true );
			$javascript_dependencies[] = $select_library . 'js';

			wp_enqueue_style( $select_library . 'css', plugins_url( 'assets/css/vendor/' . $select_library . '.min.css', __FILE__ ), array(), filemtime( plugin_dir_path( __FILE__ ) . 'assets/css/vendor/' . $select_library . '.min.css' ), 'all' );
			$css_dependencies[] = $select_library . 'css';
		}

		wp_enqueue_script( $this->slug . '-admin', plugins_url( 'assets/js/object-sync-for-salesforce-admin.min.js', __FILE__ ), $javascript_dependencies, filemtime( plugin_dir_path( __FILE__ ) . 'assets/js/object-sync-for-salesforce-admin.min.js' ), true );

		wp_enqueue_style( $this->slug . '-admin', plugins_url( 'assets/css/object-sync-for-salesforce-admin.css', __FILE__ ), $css_dependencies, filemtime( plugin_dir_path( __FILE__ ) . 'assets/css/object-sync-for-salesforce-admin.css' ), 'all' );
	}

	/**
	 * Load textdomain
	 *
	 * @return void
	 */
	public function textdomain() {
		load_plugin_textdomain( 'object-sync-for-salesforce', false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );
	}

	/**
	* Get the pre-login Salesforce credentials.
	* These depend on the plugin's settings or constants defined in wp-config.php.
	*
	* @return array $login_credentials
	*   Includes all settings necessary to log into the Salesforce API.
	*   Replaces settings options with wp-config.php values if they exist.
	*/
	private function get_login_credentials() {

		$consumer_key       = defined( 'OBJECT_SYNC_SF_SALESFORCE_CONSUMER_KEY' ) ? OBJECT_SYNC_SF_SALESFORCE_CONSUMER_KEY : get_option( $this->option_prefix . 'consumer_key', '' );
		$consumer_secret    = defined( 'OBJECT_SYNC_SF_SALESFORCE_CONSUMER_SECRET' ) ? OBJECT_SYNC_SF_SALESFORCE_CONSUMER_SECRET : get_option( $this->option_prefix . 'consumer_secret', '' );
		$callback_url       = defined( 'OBJECT_SYNC_SF_SALESFORCE_CALLBACK_URL' ) ? OBJECT_SYNC_SF_SALESFORCE_CALLBACK_URL : get_option( $this->option_prefix . 'callback_url', '' );
		$login_base_url     = defined( 'OBJECT_SYNC_SF_SALESFORCE_LOGIN_BASE_URL' ) ? OBJECT_SYNC_SF_SALESFORCE_LOGIN_BASE_URL : get_option( $this->option_prefix . 'login_base_url', '' );
		$authorize_url_path = defined( 'OBJECT_SYNC_SF_SALESFORCE_AUTHORIZE_URL_PATH' ) ? OBJECT_SYNC_SF_SALESFORCE_AUTHORIZE_URL_PATH : get_option( $this->option_prefix . 'authorize_url_path', '' );
		$token_url_path     = defined( 'OBJECT_SYNC_SF_SALESFORCE_TOKEN_URL_PATH' ) ? OBJECT_SYNC_SF_SALESFORCE_TOKEN_URL_PATH : get_option( $this->option_prefix . 'token_url_path', '' );
		$api_version        = defined( 'OBJECT_SYNC_SF_SALESFORCE_API_VERSION' ) ? OBJECT_SYNC_SF_SALESFORCE_API_VERSION : get_option( $this->option_prefix . 'api_version', '' );

		$login_credentials = array(
			'consumer_key'     => $consumer_key,
			'consumer_secret'  => $consumer_secret,
			'callback_url'     => $callback_url,
			'login_url'        => $login_base_url,
			'authorize_path'   => $authorize_url_path,
			'token_path'       => $token_url_path,
			'rest_api_version' => $api_version,
		);

		return $login_credentials;

	}

	/**
	 * Check the server to see if Soap is available
	 *
	 * @return bool $is_soap_available
	 */
	private function is_soap_available() {
		$is_soap_available = false;
		if ( extension_loaded( 'soap' ) && class_exists( 'SoapClient' ) ) {
			$is_soap_available = true;
		}
		return $is_soap_available;
	}

	/**
	 * Check the plugin to see if the Soap option has been enabled and the class has been loaded
	 *
	 * @return bool $is_soap_loaded
	 */
	private function is_soap_loaded() {
		$is_soap_loaded = false;
		if ( false === $this->is_soap_available() ) {
			return $is_soap_loaded;
		}
		$use_soap = filter_var( get_option( 'object_sync_for_salesforce_use_soap', false ), FILTER_VALIDATE_BOOLEAN );
		if ( false === $use_soap ) {
			return $is_soap_loaded;
		}
		require_once( plugin_dir_path( __FILE__ ) . 'classes/salesforce_soap_partner.php' );
		if ( class_exists( 'Object_Sync_Sf_Salesforce_Soap_Partner' ) ) {
			$is_soap_loaded = true;
		}
		return $is_soap_loaded;
	}

} // end class

// Instantiate our class.
$object_sync_salesforce = Object_Sync_Salesforce::get_instance();

