Adds shortcode in Pay Per View for Elementor builder

wpmudev-ppv-shortcode.php

<?php
/**
* Plugin Name: [Pay Per View] - Elementor Patch
* Plugin URI: https://premium.wpmudev.org/
* Description: Adds shortcode in Pay Per View for Elementor builder
* Author: Panos Lyrakis @ WPMUDEV
* Author URI: https://premium.wpmudev.org/
* License: GPLv2 or later
*/
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}
if ( ! class_exists( 'WPMUDEV_PPV_Shortcode' ) ) {
    
    class WPMUDEV_PPV_Shortcode {

        private static $_instance = null;

        public static function get_instance() {

            if( is_null( self::$_instance ) ){
                self::$_instance = new WPMUDEV_PPV_Shortcode();
            }
            return self::$_instance;
            
        }

        private function __construct() {
        	add_action( 'the_content', array( $this, 'rm_filter' ), 1 );
        	add_shortcode( 'ppw', array( $this, 'shortcode' ) );
        }

        public function rm_filter( $the_content ) {

        	global $ppw;
        	remove_filter( 'the_content', array( $ppw, 'content' ), 8 );
        	return $the_content;
        }

        public function shortcode( $atts, $content ) {
        	//global $ppw;
        	return $this->content( $content );
        }

        private function content( $content ) {
        	global $ppw, $post;
        	$method = false;
        	$out = '';

			// Unsupported post type. Maybe a temporary page, like checkout of MarketPress
			if ( ! is_object( $post ) && ! $content ) {
				return;
			}

			// If caching is allowed no need to continue
			if ( $ppw->is_cachable && ! $force ) {
				return $ppw->clear( $content );
			}

			// Display the admin full content, if selected so
			if ( $ppw->options["admin"] == 'true' && current_user_can( 'administrator' ) ) {
				return $ppw->clear( $content );
			}

			// Display the bot full content, if selected so
			if ( $ppw->options["bot"] == 'true' && $ppw->is_bot() ) {
				return $ppw->clear( $content );
			}

			// Check if current user has been authorized to see full content
			if ( $ppw->is_authorised() ) {
				return $ppw->clear( $content );
			}

			$is_subscription_valid = $ppw->is_subscription_valid( get_current_user_id() );

			// If user has already subscribed content
			if ( is_user_logged_in() && $is_subscription_valid ) {
				return $ppw->clear( $content );
			}

			//PDT Integration
			if ( is_user_logged_in() && ! empty( $_GET['ppw_paypal_subscribe'] ) && ! empty( $_GET['tx'] ) && ! empty( $_GET['st'] ) ) {

				$ppl = $ppw->call_gateway();

				//Get Transaction Details
				$transaction_details = $ppl->pdt_get_transaction_details( $_GET['tx'], $ppw->options['gateways']['paypal-express']['identity_token'] );
				$transaction_details = $ppw->process_pdt_response( $transaction_details );

				//Check Status
				if ( ! empty( $transaction_details['status'] ) && $transaction_details['status'] == 'success' ) {
					//Update Subscription and show the content
					$ppw->update_subscription( $transaction_details );

					//Show the content
					return $ppw->clear( $content );

				} else {
					//Store Payment pending message in $_SESSION, we can use this to display a message
					$_SESSION['ppv_payment_status'] = 'pending';
					$_SESSION['ppv_message']        = ! empty( $transaction_details['message'] ) ? $transaction_details['message'] : '';
				}
			}

			// Find method if it is not forced
			if ( ! $method && is_object( $post ) ) {
				$method = get_post_meta( $post->ID, 'ppw_method', true );
			}

			// Apply default method, if there is none
			if ( ! $method ) {
				$method = $ppw->options["method"];
			}

			//Get content as per the method and permissions
			$result = $ppw->subscription_status( $post, $method );
			if ( $result ) {
				// Visitor did paid for this content!
				return $ppw->clear( $content );
			}



			// Find the price
			if ( ! $price = get_post_meta( $post->ID, "ppw_price", true ) ) {
				$price = $ppw->options["price"];
			} // Apply default price if it is not set for the post/page

			if ( $method == "automatic" ) {

				if ( ! $excerpt_len = get_post_meta( $post->ID, 'ppw_excerpt', true ) ) {
					$excerpt_len = $ppw->options["excerpt"];
				}

				$out = wp_trim_words( $content, $excerpt_len, '...' );

			}
			elseif ( $method == "manual" ) {
				$out =  $post->post_excerpt;
			}
			elseif ( $method == "tool" ) {
				$contents = array();
				if ( preg_match_all( '%\[ppw( +)id="(.*?)"( +)description="(.*?)"( +)price="(.*?)"(.*?)\](.*?)\[( *)\/ppw( *)\]%is', $content, $matches, PREG_SET_ORDER ) ) {
					if ( isset( $_COOKIE["pay_per_view"] ) ) {
						$orders = unserialize( stripslashes( $_COOKIE["pay_per_view"] ) );
						if ( is_array( $orders ) ) {
							foreach ( $orders as $order ) {
								if ( is_object( $post ) && $order["post_id"] == $post->ID ) {
									$contents[] = $order["content_id"];
								} // Take only values related to this post
							}
						}
					}

					// Prepare the content
					foreach ( $matches as $m ) {
						if ( in_array( $m[2], $contents ) ) {
							// This is paid
							$content = str_replace( $m[0], $m[8], $content );
						} else {
							$content = str_replace( $m[0], $ppw->mask( $m[6], $m[2], $m[4] ), $content );
						}
					}
				}

				return $ppw->clear( $content );
			}

			return $out . $ppw->mask( $price );



        }

    }

    if ( ! function_exists( 'wpmudev_ppv_shortcode' ) ) {

    	function wpmudev_ppv_shortcode(){    		
    		return WPMUDEV_PPV_Shortcode::get_instance();
    	};

    	add_action( 'plugins_loaded', 'wpmudev_ppv_shortcode', 10 );
    }

}