<?php

/**
 * The public-facing functionality of the plugin.
 *
 * @package       advanced-classifieds-and-directory-pro
 * @subpackage    advanced-classifieds-and-directory-pro/public
 * @copyright     Copyright (c) 2015, PluginsWare
 * @license       http://opensource.org/licenses/gpl-2.0.php GNU Public License
 * @since         1.0.0
 */
 
// Exit if accessed directly
if( ! defined( 'WPINC' ) ) {
	die;
}

/**
 * ACADP_Public Class
 *
 * @since    1.0.0
 * @access   public
 */
class ACADP_Public {

	/**
	 * Always keep using our Custom Pages for ACADP Post Types & Taxonomies.
	 *
	 * @since    1.5.0
	 * @access   public
	 */
	public function template_redirect() {
	
		$redirect_url = '';
		
		if( ! is_feed() ) {
		
			// If ACADP Listings Page
			if( is_post_type_archive( 'acadp_listings' ) ) {			
				$redirect_url = acadp_get_listings_page_link();				
			}

			// If ACADP Locations Page
			else if( is_tax( 'acadp_locations' ) ) {
			
				$term = get_queried_object();
				$redirect_url = acadp_get_location_page_link( $term );
				
			}	
			 
			// If ACADP Categories Page
			else if( is_tax( 'acadp_categories' ) ) {
			
				$term = get_queried_object();
				$redirect_url = acadp_get_category_page_link( $term );
				
			}
			
			// If other custom ACADP pages those require login
			else if( ! is_user_logged_in() ) {
				global $post;								
				if( ! isset( $post ) ) return;
		
				$page_settings = get_option( 'acadp_page_settings' );
				$registration_settings = get_option( 'acadp_registration_settings', array() );
				
				$user_only_pages = array(
					$page_settings['user_dashboard'],
					$page_settings['listing_form'],
					$page_settings['manage_listings'],
					$page_settings['favourite_listings'],
					$page_settings['checkout'],
					$page_settings['payment_receipt'],
					$page_settings['payment_history']
				);
				
				if( in_array( $post->ID, $user_only_pages ) && ! empty( $registration_settings['engine'] ) && 'others' == $registration_settings['engine'] ) {
					
					if( ! filter_var( $registration_settings['custom_login'], FILTER_VALIDATE_URL ) === FALSE ) {
						$redirect_url = $registration_settings['custom_login'];
					}
					
				}
			}
		
		}

		// Redirect
		if( ! empty( $redirect_url ) ) {
		
			wp_redirect( $redirect_url );
        	exit();
			
		}
	
	}
	
	/**
	 * Output buffer.
	 *
	 * @since    1.0.0
	 * @access   public
	 */
	public function output_buffer() {
	
		if( 'POST' == $_SERVER['REQUEST_METHOD'] ) {
		
			if( ( isset( $_POST['acadp_listing_nonce'] )  && wp_verify_nonce( $_POST['acadp_listing_nonce'], 'acadp_save_listing' ) ) ||
				( isset( $_POST['acadp_checkout_nonce'] ) && wp_verify_nonce( $_POST['acadp_checkout_nonce'], 'acadp_process_payment' ) ) ) {
				ob_start();
			}
			
		}
	
	}
	
	/**
	 * Add rewrite rules.
	 *
	 * @since    1.0.0
	 * @access   public
	 */
	public function add_rewrites() {

		$page_settings = get_option( 'acadp_page_settings' );
		$url = home_url();
		
		// Listings Page
		$id = $page_settings['listings'];
		if( $id > 0 ) {
			$link = str_replace( $url, '', get_permalink( $id ) );			
			$link = trim( $link, '/' );		
			
			add_rewrite_rule( "$link/page/?([0-9]{1,})/?$", 'index.php?page_id='.$id.'&paged=$matches[1]', 'top' );
		}
		
		// Single Location Page
		$id = $page_settings['location'];
		if( $id > 0 ) {
			$link = str_replace( $url, '', get_permalink( $id ) );			
			$link = trim( $link, '/' );		
			
			add_rewrite_rule( "$link/([^/]+)/page/?([0-9]{1,})/?$", 'index.php?page_id='.$id.'&acadp_location=$matches[1]&paged=$matches[2]', 'top' );
			add_rewrite_rule( "$link/([^/]+)/?$", 'index.php?page_id='.$id.'&acadp_location=$matches[1]', 'top' );
		}
		
		// Single Category Page
		$id = $page_settings['category'];
		if( $id > 0 ) {
			$link = str_replace( $url, '', get_permalink( $id ) );			
			$link = trim( $link, '/' );		
			
			add_rewrite_rule( "$link/([^/]+)/page/?([0-9]{1,})/?$", 'index.php?page_id='.$id.'&acadp_category=$matches[1]&paged=$matches[2]', 'top' );
			add_rewrite_rule( "$link/([^/]+)/?$", 'index.php?page_id='.$id.'&acadp_category=$matches[1]', 'top' );
		}

		// User Listings Page
		$id = $page_settings['user_listings'];
		if( $id > 0 ) {
			$link = str_replace( $url, '', get_permalink( $id ) );			
			$link = trim( $link, '/' );		
			
			add_rewrite_rule( "$link/([^/]+)/page/?([0-9]{1,})/?$", 'index.php?page_id='.$id.'&acadp_user=$matches[1]&paged=$matches[2]', 'top' );
			add_rewrite_rule( "$link/([^/]+)/?$", 'index.php?page_id='.$id.'&acadp_user=$matches[1]', 'top' );
		}
		
		// Listings Edit, Delete (or) Renew Pages
		$id = $page_settings['listing_form'];
		if( $id > 0 ) {
			$link = str_replace( $url, '', get_permalink( $id ) );			
			$link = trim( $link, '/' );		
			
			add_rewrite_rule( "$link/([^/]+)/([0-9]{1,})/?$", 'index.php?page_id='.$id.'&acadp_action=$matches[1]&acadp_listing=$matches[2]', 'top' );
		}
		
		// Remove from Favourites Page
		$id = $page_settings['favourite_listings'];
		if( $id > 0 ) {
			$link = str_replace( $url, '', get_permalink( $id ) );			
			$link = trim( $link, '/' );		
			
			add_rewrite_rule( "$link/([^/]+)/([0-9]{1,})/?$", 'index.php?page_id='.$id.'&acadp_action=$matches[1]&acadp_listing=$matches[2]', 'top' );
		}
		
		// Checkout page
		$id = $page_settings['checkout'];
		if( $id > 0 ) {
			$link = str_replace( $url, '', get_permalink( $id ) );			
			$link = trim( $link, '/' );		
			
			add_rewrite_rule( "$link/submission/([0-9]{1,})/?$", 'index.php?page_id='.$id.'&acadp_action=submission&acadp_listing=$matches[1]', 'top' );
			add_rewrite_rule( "$link/promote/([0-9]{1,})/?$", 'index.php?page_id='.$id.'&acadp_action=promote&acadp_listing=$matches[1]', 'top' );
			add_rewrite_rule( "$link/([^/]+)/([0-9]{1,})/?$", 'index.php?page_id='.$id.'&acadp_action=$matches[1]&acadp_order=$matches[2]', 'top' );
		}
		
		// Payment success page
		$id = $page_settings['payment_receipt'];
		if( $id > 0 ) {
			$link = str_replace( $url, '', get_permalink( $id ) );			
			$link = trim( $link, '/' );		
			
			add_rewrite_rule( "$link/order/([0-9]{1,})/?$", 'index.php?page_id='.$id.'&acadp_action=order&acadp_order=$matches[1]', 'top' );
		}
		
		// Payment failure page
		$id = $page_settings['payment_failure'];
		if( $id > 0 ) {
			$link = str_replace( $url, '', get_permalink( $id ) );			
			$link = trim( $link, '/' );		
			
			add_rewrite_rule( "$link/order/([0-9]{1,})/?$", 'index.php?page_id='.$id.'&acadp_action=order&acadp_order=$matches[1]', 'top' );
		}
		
		// Rewrite tags
		add_rewrite_tag( '%acadp_location%', '([^/]+)' );
		add_rewrite_tag( '%acadp_category%', '([^/]+)' );
		add_rewrite_tag( '%acadp_user%', '([^/]+)' );
		add_rewrite_tag( '%acadp_listing%', '([0-9]{1,})' );
		add_rewrite_tag( '%acadp_action%', '([^/]+)' );
		add_rewrite_tag( '%acadp_order%', '([0-9]{1,})' );
	
	}
	
	/**
	 * Flush rewrite rules when it's necessary.
	 *
	 * @since    1.0.0
	 * @access   public
	 */
	 public function maybe_flush_rules() {

		$rewrite_rules = get_option( 'rewrite_rules' );
				
		if( $rewrite_rules ) {
		
			global $wp_rewrite;
			
			foreach( $rewrite_rules as $rule => $rewrite ) {
				$rewrite_rules_array[$rule]['rewrite'] = $rewrite;
			}
			$rewrite_rules_array = array_reverse( $rewrite_rules_array, true );
		
			$maybe_missing = $wp_rewrite->rewrite_rules();
			$missing_rules = false;		
		
			foreach( $maybe_missing as $rule => $rewrite ) {
				if( ! array_key_exists( $rule, $rewrite_rules_array ) ) {
					$missing_rules = true;
					break;
				}
			}
		
			if( true === $missing_rules ) {
				flush_rewrite_rules();
			}
		
		}
	
	}
	 
	/**
	 * Registers and enqueues the stylesheets for the public-facing side of the site.
	 *
	 * @since    1.0.0
	 * @access   public
	 */
	public function register_enqueue_styles() {

		$general_settings = get_option( 'acadp_general_settings' );
		
		$deps = array();
		
		wp_register_style( ACADP_PLUGIN_NAME.'-slick', ACADP_PLUGIN_URL.'public/css/slick.css', array(), '1.6.0', 'all' );
		
		if( isset( $general_settings['load_bootstrap'] ) && in_array( 'css' , $general_settings['load_bootstrap'] ) ) {
			wp_register_style( ACADP_PLUGIN_NAME.'-bootstrap', ACADP_PLUGIN_URL.'public/css/acadp-bootstrap.css', array(), '3.3.5', 'all' );
			$deps[] = ACADP_PLUGIN_NAME.'-bootstrap';
		}
		
		wp_register_style( ACADP_PLUGIN_NAME, ACADP_PLUGIN_URL.'public/css/acadp-public.css', $deps, ACADP_VERSION_NUM, 'all' );
		
		// Enqueue style dependencies
		if( is_singular('acadp_listings') ) {
			if( ! empty( $general_settings['has_images'] ) ) {
				wp_enqueue_style( ACADP_PLUGIN_NAME.'-slick' );
			}
			wp_enqueue_style( ACADP_PLUGIN_NAME );
		}			

	}

	/**
	 * Registers and enqueues javascript for the public-facing side of the site.
	 *
	 * @since    1.0.0
	 * @access   public
	 */
	public function register_enqueue_scripts() {
	
		$general_settings   = get_option( 'acadp_general_settings' );
		$map_settings       = get_option( 'acadp_map_settings' );
		$recaptcha_settings = get_option( 'acadp_recaptcha_settings' );

		wp_register_script( ACADP_PLUGIN_NAME.'-slick', ACADP_PLUGIN_URL.'public/js/slick.min.js', array( 'jquery' ), '1.6.0', true );
		
		if( isset( $general_settings['load_bootstrap'] ) && in_array( 'javascript' , $general_settings['load_bootstrap'] ) ) {
			wp_register_script( ACADP_PLUGIN_NAME.'-bootstrap', ACADP_PLUGIN_URL.'public/js/bootstrap.min.js', array( 'jquery' ), '3.3.5', true );
		}
		
		wp_register_script( ACADP_PLUGIN_NAME.'-validator', ACADP_PLUGIN_URL.'public/js/validator.min.js', array( 'jquery' ), '0.9.0', true );
		
		wp_register_script( ACADP_PLUGIN_NAME, ACADP_PLUGIN_URL.'public/js/acadp-public.js', array( 'jquery' ), ACADP_VERSION_NUM, true );
		
		if( ! empty( $recaptcha_settings['site_key'] ) && ! empty( $recaptcha_settings['forms'] ) ) {
			$recaptcha_site_key     = $recaptcha_settings['site_key'];
			$recaptcha_registration = in_array( 'registration', $recaptcha_settings['forms'] ) ? 1 : 0;
			$recaptcha_listing      = in_array( 'listing', $recaptcha_settings['forms'] ) ? 1 : 0;
			$recaptcha_contact      = ! empty( $general_settings['has_contact_form'] ) && in_array( 'contact', $recaptcha_settings['forms'] ) ? 1 : 0;
			$recaptcha_report_abuse = ! empty( $general_settings['has_report_abuse'] ) && in_array( 'report_abuse', $recaptcha_settings['forms'] ) ? 1 : 0;
		} else {
			$recaptcha_site_key     = '';
			$recaptcha_registration = 0;
			$recaptcha_listing      = 0;
			$recaptcha_contact      = 0;
			$recaptcha_report_abuse = 0;
		}
		
		wp_localize_script( ACADP_PLUGIN_NAME, 'acadp', array(
				'is_rtl'                       => is_rtl(),
				'plugin_url'                   => ACADP_PLUGIN_URL,
				'ajax_url'                     => admin_url( 'admin-ajax.php' ),
				'ajax_nonce'                   => wp_create_nonce( 'acadp_ajax_nonce' ),
				'maximum_images_per_listing'   => $general_settings['maximum_images_per_listing'],
				'zoom_level'                   => $map_settings['zoom_level'],
				'recaptcha_registration'       => $recaptcha_registration,
				'recaptcha_site_key'           => $recaptcha_site_key,				
				'recaptcha_listing'            => $recaptcha_listing,
				'recaptcha_contact'            => $recaptcha_contact,
				'recaptcha_report_abuse'       => $recaptcha_report_abuse,
				'recaptchas'                   => array( 'registration' => 0, 'listing' => 0, 'contact' => 0, 'report_abuse' => 0 ),
				'recaptcha_invalid_message'    => __( "You can't leave Captcha Code empty", 'advanced-classifieds-and-directory-pro' ),
				'user_login_alert_message'     => __( 'Sorry, you need to login first.', 'advanced-classifieds-and-directory-pro' ),				
				'upload_limit_alert_message'   => __( 'Sorry, you have only %d images pending.', 'advanced-classifieds-and-directory-pro' ),
				'delete_label'                 => __( 'Delete Permanently', 'advanced-classifieds-and-directory-pro' ),
				'proceed_to_payment_btn_label' => __( 'Proceed to payment', 'advanced-classifieds-and-directory-pro' ),
				'finish_submission_btn_label'  => __( 'Finish submission', 'advanced-classifieds-and-directory-pro' )				
			)
		);
		
		$map_api_key = ! empty( $map_settings['api_key'] ) ? '&key='.$map_settings['api_key'] : '';
		wp_register_script( ACADP_PLUGIN_NAME.'-google-map', 'https://maps.googleapis.com/maps/api/js?v=3.exp'.$map_api_key, array( ACADP_PLUGIN_NAME ), '', true );
		wp_register_script( ACADP_PLUGIN_NAME.'-markerclusterer', ACADP_PLUGIN_URL.'public/js/markerclusterer.js', array( ACADP_PLUGIN_NAME.'-google-map' ), '1.0.0', true );
		
		wp_register_script( ACADP_PLUGIN_NAME."-recaptcha", "https://www.google.com/recaptcha/api.js?onload=acadp_on_recaptcha_load&render=explicit", array( ACADP_PLUGIN_NAME ), '', true );
		
		// Enqueue script dependencies
		if( is_singular('acadp_listings') ) {
			if( ! empty( $general_settings['has_images'] ) ) {
				wp_enqueue_script( ACADP_PLUGIN_NAME.'-slick' );
			}
			if( wp_script_is( ACADP_PLUGIN_NAME.'-bootstrap', 'registered' ) ) {
				wp_enqueue_script( ACADP_PLUGIN_NAME.'-bootstrap' );				
			}
			wp_enqueue_script( ACADP_PLUGIN_NAME.'-validator' );
			wp_enqueue_script( ACADP_PLUGIN_NAME );
			wp_enqueue_script( ACADP_PLUGIN_NAME.'-google-map' );
			if( $recaptcha_contact > 0 || $recaptcha_report_abuse > 0 ) {
				wp_enqueue_script( ACADP_PLUGIN_NAME . "-recaptcha" );
			}
		}
		
	}
	
	/**
	 * Dequeue scripts.
	 *
	 * @since    1.5.6
	 * @access   public
	 */
	public function dequeue_scripts() {
		
		$page_settings = get_option( 'acadp_page_settings' );
		
		if( ( is_user_logged_in() && is_page( (int) $page_settings['listing_form'] ) ) || is_singular('acadp_listings') ) {
			wp_dequeue_script( 'recaptcha' );
		}
	
	}
	
	/**		 
	 * Override the default post/page title depending on the ACADP view.
	 *		
	 * @since    1.5.5
	 * @access   public
	 * 
	 * @param    string    $title          The document title.	 
     * @param    string    $sep            Title separator.
     * @param    string    $seplocation    Location of the separator (left or right).		 
	 * @return   string                    The filtered title.		 
	*/
	public function wp_title( $title, $sep, $seplocation ) {
		
		global $post;
		
		if( ! isset( $post ) ) return $title;
		
		$page_settings = get_option( 'acadp_page_settings' );
		$custom_title = '';
		$site_name = get_bloginfo( 'name' );
		
		// Get Location page title
		if( $post->ID == $page_settings['location'] ) {
		
			if( $slug = get_query_var( 'acadp_location' ) ) {
				$term = get_term_by( 'slug', $slug, 'acadp_locations' );
				$custom_title = $term->name;			
			}
			
		}
		
		// Get Category page title
		if( $post->ID == $page_settings['category'] ) {
			
			if( $slug = get_query_var( 'acadp_category' ) ) {
				$term = get_term_by( 'slug', $slug, 'acadp_categories' );
				$custom_title = $term->name;			
			}
				
		}

		// Get User Listings page title
		if( $post->ID == $page_settings['user_listings'] ) {
		
			if( $slug = acadp_get_user_slug() ) {
				$user = get_user_by( 'slug', $slug );
				$custom_title = $user->display_name;		
			}
			
		}
		
		// ...
		if( ! empty( $custom_title ) ) {
			$title = ( 'left' == $seplocation ) ? "$site_name $sep $custom_title" : "$custom_title $sep $site_name";
		}
		
		return $title;
		
	}
	
	/**
	 * Override the default post/page title depending on the ACADP view.
	 *
	 * @since    1.5.6
	 * @access   public
	 *
	 * @param    array    $title    The document title parts.
	 * @return                      Filtered title parts.
	 */
	public function document_title_parts( $title ) {
	
		global $post;
		
		if( ! isset( $post ) ) return $title;
		
		$page_settings = get_option( 'acadp_page_settings' );
		
		// Get Category page title
		if( $post->ID == $page_settings['category'] ) {
			
			if( $slug = get_query_var( 'acadp_category' ) ) {
				$term = get_term_by( 'slug', $slug, 'acadp_categories' );
				 $title['title'] = $term->name;			
			}
				
		}
		
		// Get Location page title
		if( $post->ID == $page_settings['location'] ) {
		
			if( $slug = get_query_var( 'acadp_location' ) ) {
				$term = get_term_by( 'slug', $slug, 'acadp_locations' );
				 $title['title'] = $term->name;			
			}
			
		}
		
		// Get User Listings page title
		if( $post->ID == $page_settings['user_listings'] ) {
		
			if( $slug = acadp_get_user_slug() ) {
				$user = get_user_by( 'slug', $slug );
				 $title['title'] = $user->display_name;		
			}
			
		}
		
		// ...
		return $title;
	
	}

	/**
	 * Construct Yoast SEO title for our category, location & user_listings pages.
	 *
	 * @since     1.6.1
	 * @param     array    $title    The Yoast title.
	 * @return                       Modified title.
	 */
	public function wpseo_title( $title ) {

		global $post;
		
		if( ! isset( $post ) ) return $title;

		$page_settings = get_option( 'acadp_page_settings' );

		if( $post->ID != $page_settings['category'] && $post->ID != $page_settings['location'] && $post->ID != $page_settings['user_listings'] ) {
			return $title;
		}

		$wpseo_titles = get_option( 'wpseo_titles' );

		$sep_options = WPSEO_Option_Titles::get_instance()->get_separator_options();

		if( isset( $wpseo_titles['separator'] ) && isset( $sep_options[ $wpseo_titles['separator'] ] ) ) {
			$sep = $sep_options[ $wpseo_titles['separator'] ];
		} else {
			$sep = '-'; // Setting default separator if Admin didn't set it from backed
		}

		$replacements = array(
			'%%sep%%'              => $sep,						
			'%%page%%'             => '',
			'%%primary_category%%' => '',
			'%%sitename%%'         => get_bloginfo( 'name' )
		);

		$title_template = '';

		// Category page
		if( $post->ID == $page_settings['category'] ) {
			
			if( $slug = get_query_var( 'acadp_category' ) ) {

				$term = get_term_by( 'slug', $slug, 'acadp_categories' );			
				$replacements['%%term_title%%'] = $term->name;
				
				// Get Archive SEO title
				if( array_key_exists( 'title-tax-acadp_categories', $wpseo_titles ) ) {
					$title_template = $wpseo_titles['title-tax-acadp_categories'];
				}				

				// Get Term SEO title
				$meta = get_option( 'wpseo_taxonomy_meta' );

				if( array_key_exists( 'acadp_categories', $meta ) ) {

					if( array_key_exists( $term->term_id, $meta['acadp_categories'] ) ) {

						if( array_key_exists( 'wpseo_title', $meta['acadp_categories'][ $term->term_id ] ) ) {
							$title_template = $meta['acadp_categories'][ $term->term_id ]['wpseo_title'];
						}

					}

				}

			}
				
		}

		// Location page
		if( $post->ID == $page_settings['location'] ) {
			
			if( $slug = get_query_var( 'acadp_location' ) ) {

				$term = get_term_by( 'slug', $slug, 'acadp_locations' );			
				$replacements['%%term_title%%'] = $term->name;
				
				// Get Archive SEO title
				if( array_key_exists( 'title-tax-acadp_locations', $wpseo_titles ) ) {
					$title_template = $wpseo_titles['title-tax-acadp_locations'];
				}				

				// Get Term SEO title
				$meta = get_option( 'wpseo_taxonomy_meta' );

				if( array_key_exists( 'acadp_locations', $meta ) ) {

					if( array_key_exists( $term->term_id, $meta['acadp_locations'] ) ) {

						if( array_key_exists( 'wpseo_title', $meta['acadp_locations'][ $term->term_id ] ) ) {
							$title_template = $meta['acadp_locations'][ $term->term_id ]['wpseo_title'];
						}

					}

				}

			}
				
		}

		// User listings page
		if( $post->ID == $page_settings['user_listings'] ) {
		
			if( $slug = acadp_get_user_slug() ) {

				$user = get_user_by( 'slug', $slug );
				$replacements['%%title%%'] = $user->display_name;
				
				// Get Archive SEO title
				if( array_key_exists( 'title-page', $wpseo_titles ) ) {
					$title_template = $wpseo_titles['title-page'];
				}		
				
				// Get page meta title
				$meta = get_post_meta( $post->ID, '_yoast_wpseo_title', true );

				if( ! empty( $meta ) ) {
					$title_template = $meta;
				}

			}
			
		}

		// Return
		if( ! empty( $title_template ) ) {
			$title = strtr( $title_template, $replacements );
		}

		return $title;

	}

	/**
	 * Construct Yoast SEO description for our category, location & user_listings pages.
	 *
	 * @since     1.6.1
	 * @param     array    $desc    The Yoast description.
	 * @return                      Modified description.
	 */
	public function wpseo_metadesc( $desc ) {

		global $post;

		if( ! isset( $post ) ) return $desc;

		$page_settings = get_option( 'acadp_page_settings' );

		if( $post->ID != $page_settings['category'] && $post->ID != $page_settings['location'] && $post->ID != $page_settings['user_listings'] ) {
			return $desc;
		}

		$wpseo_titles = get_option( 'wpseo_titles' );

		$sep_options = WPSEO_Option_Titles::get_instance()->get_separator_options();

		if( isset( $wpseo_titles['separator'] ) && isset( $sep_options[ $wpseo_titles['separator'] ] ) ) {
			$sep = $sep_options[ $wpseo_titles['separator'] ];
		} else {
			$sep = '-'; // Setting default separator if Admin didn't set it from backed
		}

		$replacements = array(
			'%%sep%%'              => $sep,						
			'%%page%%'             => '',
			'%%primary_category%%' => '',
			'%%sitename%%'         => get_bloginfo( 'name' )
		);

		$desc_template = '';

		// Category page
		if( $post->ID == $page_settings['category'] ) {
			
			if( $slug = get_query_var( 'acadp_category' ) ) {

				$term = get_term_by( 'slug', $slug, 'acadp_categories' );
				$replacements['%%term_title%%'] = $term->name;	
				
				// Get Archive SEO desc
				if( array_key_exists( 'metadesc-tax-acadp_categories', $wpseo_titles ) ) {
					$desc_template = $wpseo_titles['metadesc-tax-acadp_categories'];
				}				

				// Get Term SEO desc
				$meta = get_option( 'wpseo_taxonomy_meta' );

				if( array_key_exists( 'acadp_categories', $meta ) ) {

					if( array_key_exists( $term->term_id, $meta['acadp_categories'] ) ) {

						if( array_key_exists( 'wpseo_desc', $meta['acadp_categories'][ $term->term_id ] ) ) {
							$desc_template = $meta['acadp_categories'][ $term->term_id ]['wpseo_desc'];
						}

					}

				}

			}
				
		}

		// Location page
		if( $post->ID == $page_settings['location'] ) {
			
			if( $slug = get_query_var( 'acadp_location' ) ) {

				$term = get_term_by( 'slug', $slug, 'acadp_locations' );
				$replacements['%%term_title%%'] = $term->name;	
				
				// Get Archive SEO desc
				if( array_key_exists( 'metadesc-tax-acadp_locations', $wpseo_titles ) ) {
					$desc_template = $wpseo_titles['metadesc-tax-acadp_locations'];
				}				

				// Get Term SEO desc
				$meta = get_option( 'wpseo_taxonomy_meta' );

				if( array_key_exists( 'acadp_locations', $meta ) ) {

					if( array_key_exists( $term->term_id, $meta['acadp_locations'] ) ) {

						if( array_key_exists( 'wpseo_desc', $meta['acadp_locations'][ $term->term_id ] ) ) {
							$desc_template = $meta['acadp_locations'][ $term->term_id ]['wpseo_desc'];
						}

					}

				}

			}
				
		}

		// User listings page
		if( $post->ID == $page_settings['user_listings'] ) {
		
			if( $slug = acadp_get_user_slug() ) {

				$user = get_user_by( 'slug', $slug );
				$replacements['%%title%%'] = $user->display_name;
				
				// Get Archive SEO desc				
				if( array_key_exists( 'metadesc-page', $wpseo_titles ) ) {
					$desc_template = $wpseo_titles['metadesc-page'];
				}		
				
				// Get page meta desc
				$meta = get_post_meta( $post->ID, '_yoast_wpseo_metadesc', true );

				if( ! empty( $meta ) ) {
					$desc_template = $meta;
				}

			}
			
		}

		// Return
		if( ! empty( $desc_template ) ) {
			$desc = strtr( $desc_template, $replacements );
		}

		return $desc;
	}

	/**
	 * Override the Yoast SEO canonical URL on our category, location & user_listings pages.
	 *
	 * @since     1.6.1
	 * @param     array    $url    The Yoast canonical URL.
	 * @return                     Modified canonical URL.
	 */
	public function wpseo_canonical( $url ) {

		global $post;

		if( ! isset( $post ) ) return $url;

		$page_settings = get_option( 'acadp_page_settings' );

		// Category page
		if( $post->ID == $page_settings['category'] ) {
			
			if( $slug = get_query_var( 'acadp_category' ) ) {

				$term = get_term_by( 'slug', $slug, 'acadp_categories' );
				$url = acadp_get_category_page_link( $term );

			}
				
		}

		// Location page
		if( $post->ID == $page_settings['location'] ) {
			
			if( $slug = get_query_var( 'acadp_location' ) ) {

				$term = get_term_by( 'slug', $slug, 'acadp_locations' );
				$url = acadp_get_location_page_link( $term );

			}
				
		}

		// User listings page
		if ( $post->ID == $page_settings['user_listings'] ) {
		
			if ( $slug = acadp_get_user_slug() ) {

				$user = get_user_by( 'slug', $slug );
				$url = acadp_get_user_page_link( $user->ID );			

			}
			
		}

		return $url;

	}
	
	/**
	 * Adds the Facebook OG tags and Twitter Cards.
	 *
	 * @since    1.0.0
	 * @access   public
	 */
	public function og_metatags() {
	
		global $post;
		
		if( ! isset( $post ) ) return;
		
		$page_settings        = get_option( 'acadp_page_settings' );
		$socialshare_settings = get_option( 'acadp_socialshare_settings' );
			
		$page = '';
		if( is_singular('acadp_listings') ) {
			
			$page = 'listing';
				
		} else {
			
			if( $page_settings['locations'] == $post->ID ) {
				$page = 'locations';
			}
			
			if( $page_settings['categories'] == $post->ID ) {
				$page = 'categories';
			}
				
			if( in_array( $post->ID, array( $page_settings['listings'], $page_settings['user_listings'], $page_settings['location'], $page_settings['category'], $page_settings['search'] ) ) ) {
				$page = 'listings';
			}
				
		}
			
		if( isset( $socialshare_settings['pages'] ) && in_array( $page, $socialshare_settings['pages'] ) ) {
			
			$title = get_the_title();
			
			// Get Location page title
			if( $post->ID == $page_settings['location'] ) {
			
				if( $slug = get_query_var( 'acadp_location' ) ) {
					$term = get_term_by( 'slug', $slug, 'acadp_locations' );
					$title = $term->name;			
				}
				
			}
			
			// Get Category page title
			if( $post->ID == $page_settings['category'] ) {
			
				if( $slug = get_query_var( 'acadp_category' ) ) {
					$term = get_term_by( 'slug', $slug, 'acadp_categories' );
					$title = $term->name;			
				}
				
			}

			// Get User Listings page title
			if( $post->ID == $page_settings['user_listings'] ) {
			
				if( $slug = acadp_get_user_slug() ) {
					$user = get_user_by( 'slug', $slug );
					$title = $user->display_name;		
				}
				
			}
			
			echo '<meta property="og:url" content="'.acadp_get_current_url().'" />';
			echo '<meta property="og:type" content="article" />';	
			echo '<meta property="og:title" content="'.$title.'" />';				
			if( 'listing' == $page ) {
				if( ! empty( $post->post_content ) ) {
					echo '<meta property="og:description" content="'.wp_trim_words( $post->post_content, 150 ).'" />';
				}
					
				$images = get_post_meta( $post->ID, 'images', true );			
				if( ! empty( $images ) ) { 
					$thumbnail = wp_get_attachment_image_src( $images[0], 'full' );
					if( ! empty( $thumbnail ) ) echo '<meta property="og:image" content="'.$thumbnail[0].'" />';
				}					
			}
			echo '<meta property="og:site_name" content="'.get_bloginfo( 'name' ).'" />';
			echo '<meta name="twitter:card" content="summary">';
				
		}
		
	}
	
	/**
	 * Force Specific Pages to load with the SSL Certificate.
	 *
	 * @since    1.0.0
	 * @access   public
	 *
	 * @params	 boolean    $force_ssl    Whether to force SSL in current page.
	 * @params	 int        $post_id      Page ID.
	 * @return	 boolean    		      True to force SSL, false if not.
	 */
	public function force_ssl_https( $force_ssl, $post_id ) {
	
		$page_settings = get_option( 'acadp_page_settings' );
		
		if( $post_id == ( int ) $page_settings['checkout'] ) {
		
			$gateway_settings = get_option( 'acadp_gateway_settings' );
			
			if( ! empty( $gateway_settings['use_https'] ) ) {
        		return true;
			}
			
    	}
		
    	return $force_ssl;
	
	}
	
	/**
	 * Change the current page title if applicable.
	 *
	 * @since    1.0.0
	 * @access   public
	 *
	 * @params	 string    $title    Current page title.
	 * @return	 string    $title    Modified page title.
	 */
	public function the_title( $title ) {

		if( ! in_the_loop() || ! is_main_query() ) {
			return $title;
		}
		
		if( is_singular('acadp_listings') ) {
			return '';
		}
		
		global $post;
		
		$page_settings = get_option( 'acadp_page_settings' );
		
		// Change Location page title
		if( $post->ID == $page_settings['location'] ) {
		
			if( $slug = get_query_var( 'acadp_location' ) ) {
				$term = get_term_by( 'slug', $slug, 'acadp_locations' );
				$title = $term->name;			
			}
			
		}
		
		// Change Category page title
		if( $post->ID == $page_settings['category'] ) {
		
			if( $slug = get_query_var( 'acadp_category' ) ) {
				$term = get_term_by( 'slug', $slug, 'acadp_categories' );
				$title = $term->name;			
			}
			
		}
		
		// Change User Listings page title
		if( $post->ID == $page_settings['user_listings'] ) {
		
			if( $slug = acadp_get_user_slug() ) {
				$user = get_user_by( 'slug', $slug );
				$title = $user->display_name;		
			}
			
		}	
		
		// Change Search page title
		if( $post->ID == $page_settings['search'] ) {
		
			if( isset( $_GET['q'] ) && ! empty( $_GET['q'] ) ) {
				$title = sprintf( __( 'You have searched for "%s"...', 'advanced-classifieds-and-directory-pro' ), sanitize_text_field( $_GET['q'] ) );			
			}
			
		}		
		
		return $title;
	
	}
	
	/**
	 * Outputs ACADP child terms dropdown.
	 *
	 * @since    1.5.5
	 * @access   public
	 */
	public function ajax_callback_dropdown_terms() {

		check_ajax_referer( 'acadp_ajax_nonce', 'security' );

		if( isset( $_POST['taxonomy'] ) && isset( $_POST['parent'] ) ) {

			$args = array( 
				'taxonomy'  => sanitize_text_field( $_POST['taxonomy'] ),
				'base_term' => 0,
				'parent'    => (int) $_POST['parent']
			);
			
			if( 'acadp_locations' == $args['taxonomy'] ) {
				$general_settings = get_option( 'acadp_general_settings' );
				$locations_settings = get_option( 'acadp_locations_settings' );
				
				$args['base_term'] = max( 0, $general_settings['base_location'] );
				$args['orderby'] = $locations_settings['orderby'];
				$args['order'] = $locations_settings['order'];
			}
			
			if( 'acadp_categories' == $args['taxonomy'] ) {
				$categories_settings = get_option( 'acadp_categories_settings' );
				
				$args['orderby'] = $categories_settings['orderby'];
				$args['order'] = $categories_settings['order'];
			}
			
			if( isset( $_POST['class'] ) && '' != trim( $_POST['class'] ) ) {
				$args['class'] = sanitize_text_field( $_POST['class'] );
			}
			
			if( $args['parent'] != $args['base_term'] ) {
				ob_start();
				acadp_dropdown_terms( $args );
				$output = ob_get_clean();			
				print $output;
			}
			
		}

		wp_die();
	
	}

	/**
	 * Always use our custom page for ACADP locations and categories.
	 *
	 * @since     1.0.0
	 * @param     string    $url         The term URL.
	 * @param     object    $term        The term object.
	 * @param     string    $taxonomy    The taxonomy slug.
	 * @return    string    $url         Filtered term URL.
	 */
	public function term_link( $url, $term, $taxonomy ) {
	
		// If ACADP Locations
		if ( 'acadp_locations' == $taxonomy ) {
			$url = acadp_get_location_page_link( $term );
		}

		// If ACADP Categories
		if ( 'acadp_categories' == $taxonomy ) {
			$url = acadp_get_category_page_link( $term );
		}
		
		return $url;
		
	}

}