Adds the coupon price of appointments in gcal description. Requires MarketPress

wpmudev-app-coupon-price-on-gcal.php

<?php
/**
 * Plugin Name: Add coupon price of appointments in gcal
 * Version:     1.2.0
 * Description: Adds the coupon price of appointments in gcal description
 * Author:      Panos Lyrakis (WPMU DEV)
 * Author URI:  https://premium.wpmudev.org/profile/panoskatws
 * Plugin URI:  https://premium.wpmudev.org/project/appointments-plus/
 * License:     GPL2
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 */

/**
* Instead of adding the coupon code and dicounted price in the of the GCal event description, there are new placeholders
* that can be used.
* For displaying the coupon code use the placeholder COUPON_CODE
* For displaying the discounted price use the placeholder DISCOUNTED_PRICE
* Both placeholders should be added in the admin > Appointments > Settings > Google Calendar tab, in the "Event description" field
* The output already contains the description so
* 	COUPON_CODE will output : "Coupon Code: THE_CODE" and
* 	DISCOUNTED_PRICE will output : "Discounted Price: the_discounted_price"
* So in Event description field you only need to add the placeholder. This is helpfull in the case no coupon is used,
* in which case it will not add any text. This can be changed with filters
* 	WPMUDEV_APPS_Coupon_To_GCal/coupon_str for coupon code and
* 	WPMUDEV_APPS_Coupon_To_GCal/discounted_price_str for discounted price
* You can also edit lines 149 and 152 accordingly
*/

if( ! class_exists( 'WPMUDEV_APPS_Coupon_To_GCal ') ){

	class WPMUDEV_APPS_Coupon_To_GCal{

		private static $_instance = null;
		var $COUPON_PLACEHOLDER, $DISCOUNTED_PRICE_PLACEHOLDER;


		public static function get_instance() {
            if ( is_null( self::$_instance ) ) {
                self::$_instance = new WPMUDEV_APPS_Coupon_To_GCal();
            }

            return self::$_instance;
        }


        private function __construct() {

        	$this->COUPON_PLACEHOLDER = apply_filters( 'WPMUDEV_APPS_Coupon_To_GCal/COUPON_PLACEHOLDER', 'COUPON_CODE' );
        	$this->DISCOUNTED_PRICE_PLACEHOLDER = apply_filters( 'WPMUDEV_APPS_Coupon_To_GCal/DISCOUNTED_PRICE_PLACEHOLDER', 'DISCOUNTED_PRICE' );

        	add_action( 'mp_order/new_order', array( $this, 'app_order' ), 10, 1 );

        	add_filter( 'app-gcal-set_description', array( $this, 'set_description' ), 10, 2 );

        	add_filter( 'app-appointment-appointment_created', array( $this, 'appointment_created' ), 20, 7 );
        }


        public function appointment_created( $additional, $insert_id, $post_id, $service, $worker, $start, $end ){

        	//In mp addon bridge, the 'mp' index isset as 1 on hook "app-appointment-appointment_created" with priority 10 - we use 20 so it should be set.
        	//Lets update the variation's meta with the app id so we can use in set_description().
        	//Usefull with Stripe, where the "app-gcal-set_description" is reached before "mp_order/new_order"
        	if( is_array( $additional ) && isset( $additional['mp'] ) && $additional['mp'] == 1 ){        		

        		if( isset( $additional['variation'] ) && is_numeric( $additional['variation'] ) ){
        			update_post_meta( $additional['variation'], 'app_id', $insert_id );
        		}

        	}

        }


        public function app_order( $order ){

    		global $wpdb;

			if( ! function_exists( 'appointments_get_table' ) ){
				return;
			}

			$apps_meta_table = appointments_get_table( 'appmeta' );

			$cart_info = is_object( $order ) && is_callable( array( $order, 'get_cart' ) )
			  ? $order->get_cart()->get_items() 
			  : ( isset( $order->mp_cart_info ) ? $order->mp_cart_info : array() );

			if( !is_object( $cart_info ) || epmty( $cart_info ) ){
			  global $mp_cart;
			  $cart_info = $mp_cart->get_items();
			}

			$variation_type = MP_Product::get_variations_post_type();
			$appointment_ids = array();

			if ( is_array( $cart_info ) && count( $cart_info ) ) {

			  foreach ( $cart_info as $cart_id => $count ) {
			    $variation = get_post( $cart_id );
			    if ( ! empty( $variation->post_type ) && $variation_type === $variation->post_type && self::is_app_mp_page( $variation->post_parent ) ) {
			      $app_id = MP_Product::get_variation_meta( $variation->ID, 'name' );
			      if ( is_numeric( $app_id ) ) {
			        $appointment_ids[] = $app_id;
			      }
			    }
			  }
			}

			if( ! empty( $appointment_ids ) ){
				foreach( $appointment_ids as $appointment_id ){

				    $wpdb->insert( $apps_meta_table, 
				      array(
				        'app_appointment_id' => $appointment_id ,
				        'meta_key' => 'mp_order_id',
				        'meta_value' => $order->ID
				      ),
				      array( '%d', '%s', '%s' )
				    );

				}
			}
        }


        public function set_description(  $description, $app  ){

			global $wpdb;

			if( ! function_exists( 'appointments_get_table' ) ){
				return $description;
			}

			$replacement = array(
			   	$this->COUPON_PLACEHOLDER => '',
			   	$this->DISCOUNTED_PRICE_PLACEHOLDER => ''
			);
			$coupon_str = '';
			$discounted_price_str = '';
		  	$order_coupon_meta = array();

			$meta_table = appointments_get_table( 'appmeta' );
			$order_id = $wpdb->get_var( $wpdb->prepare( "SELECT meta_value FROM {$meta_table} WHERE app_appointment_id = %d AND meta_key='mp_order_id' ", $app->ID ));

			/*
			* Order id in apps meta table
			*/
			if( $order_id && is_numeric( $order_id ) ){

				$order = new MP_Order( $order_id );
				$cart = $order->get_meta( 'mp_cart_info' );

				$order_coupon_meta = get_post_meta( $order->ID, 'mp_discount_info', true );

				if( is_array( $order_coupon_meta ) && !empty( $order_coupon_meta ) ){

				    foreach( $order_coupon_meta as $coupon=>$discount ){

						$coupon_obj = get_page_by_title( $coupon, OBJECT, 'mp_coupon' );
						$coupon_meta = get_post_meta( $coupon_obj->ID );
						$coupon_discount = $coupon_meta['discount'][0];
						$is_percentage = substr($coupon_discount, -1) == '%' ? true : false;

						$app_price = $app->price;

						if( $is_percentage ){
							$app_price = number_format( $app_price - ( $app_price * $coupon_discount / 100  ), 2 );
						}
						else{
							$app_price = $app_price - $coupon_discount;
						}

				    }

				    $coupon_str = 'Coupon Code: '. $coupon_obj->post_title;
				    $coupon_str = apply_filters( 'WPMUDEV_APPS_Coupon_To_GCal/coupon_str', $coupon_str, $coupon_obj->post_title );

				    $discounted_price_str = 'Discounted Price: '. $app_price;
				    $discounted_price_str = apply_filters( 'WPMUDEV_APPS_Coupon_To_GCal/discounted_price_str', $discounted_price_str, $app_price );
				}
				

			    $replacement = array(
			    	$this->COUPON_PLACEHOLDER => $coupon_str,
			    	$this->DISCOUNTED_PRICE_PLACEHOLDER => $discounted_price_str
				);

			    foreach( $replacement as $macro => $repl ) {
					$description = preg_replace('/\b' . preg_quote($macro, '/') . '\b/U', $repl, $description);
				}

				return $description;

			}
			/*
			* No Order id in apps meta table, but lets check if app id in cart and if there is any coupon applied
			*/
			else{			  	

				$coupons_applied = array();
				$cart_items = mp_cart()->get_items();

				if ( is_multisite() ) {
					$blog_id = mp_cart()->get_blog_id();
					$coupons_applied = mp_get_session_value( "mp_cart_coupons->{$blog_id}", array() );
				} else {
					$coupons_applied = mp_get_session_value( 'mp_cart_coupons', array() );
				}

				if( ! empty( $cart_items ) && ! empty( $coupons_applied ) ){
					foreach( $cart_items as $item_id => $quantity ){
						$app_id = get_post_meta( $item_id, 'app_id', true );

						if( $app->ID == $app_id ){

							$app_price = $app_price_discounted = $app->price;

							foreach( $coupons_applied as $key => $coupon_id ){
								$coupon = new MP_Coupon( $coupon_id );
								$discount = get_post_meta( $coupon->ID, 'discount', true );

								if ( strpos( $discount, '%' ) !== false ){

									$discount = (float)str_replace( '%', '', $discount );
									$app_price_discounted = number_format( $app_price_discounted - ( $app_price_discounted*$discount/100 ), 2 );

								}
								else{
									$app_price_discounted = number_format( $app_price_discounted - $discount, 2 );
								}
							}

							$coupon_str = 'Coupon Code: '. $coupon->post_title;
					    	$coupon_str = apply_filters( 'WPMUDEV_APPS_Coupon_To_GCal/coupon_str', $coupon_str, $coupon->post_title );

							$discounted_price_str = 'Discounted Price: '. $app_price_discounted;
					    	$discounted_price_str = apply_filters( 'WPMUDEV_APPS_Coupon_To_GCal/discounted_price_str', $discounted_price_str, $app_price_discounted );

					    	$replacement = array(
						    	$this->COUPON_PLACEHOLDER => $coupon_str,
						    	$this->DISCOUNTED_PRICE_PLACEHOLDER => $discounted_price_str
							);

						    foreach( $replacement as $macro => $repl ) {
								$description = preg_replace('/\b' . preg_quote($macro, '/') . '\b/U', $repl, $description);
							}

							return $description;
						}
					}
				}				

			}

			/*
			*If no coupon, remove the coupon placeholders
			*/
		  	foreach( $replacement as $macro => $repl ) {
				$description = preg_replace('/\b' . preg_quote($macro, '/') . '\b/U', '', $description);
			}
			  
			return $description;
        }


        public static function is_app_mp_page ($product) {
			$product = get_post($product);
			$result = is_object( $product ) && strpos( $product->post_content, '[app_' ) !== false
			  ? true
			  : false
			;
			// Maybe required for templates
			return apply_filters( 'app_is_mp_page', $result, $product );
		}

    }

    add_action( 'plugins_loaded', function(){
		$GLOBALS['WPMUDEV_APPS_Coupon_To_GCal'] = WPMUDEV_APPS_Coupon_To_GCal::get_instance();
	} );

}