<?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 {

	/**
	 * 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 = network_home_url();
		
		// 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' );
		}
		
		// 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' );
		}
		
		// 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( "$link/promote/([0-9]{1,})/?$", 'index.php?page_id='.$id.'&acadp_action=promote&acadp_order=$matches[1]', 'top' );
			add_rewrite_rule( "$link/([^/]+)/([0-9]{1,})/?$", 'index.php?page_id='.$id.'&acadp_action=$matches[1]&acadp_order=$matches[2]', 'top' );
			add_rewrite_rule( "$link/([0-9]{1,})/?$", 'index.php?page_id='.$id.'&acadp_listing=$matches[1]', '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( "$link/([0-9]{1,})/?$", 'index.php?page_id='.$id.'&acadp_order=$matches[1]', 'top' );
		}
		
		// Rewrite tags
		add_rewrite_tag( '%acadp_category%', '([^/]+)' );
		add_rewrite_tag( '%acadp_location%', '([^/]+)' );
		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();
		
		if( isset( $general_settings['load_bootstrap'] ) && in_array( 'css' , $general_settings['load_bootstrap'] ) ) {
			wp_register_style( ACADP_PLUGIN_NAME.'-bootstrap', ACADP_PLUGIN_URL . 'includes/libraries/bootstrap/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') ) {
			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' );
		$recaptcha_settings = get_option( 'acadp_recaptcha_settings' );

		if( isset( $general_settings['load_bootstrap'] ) && in_array( 'javascript' , $general_settings['load_bootstrap'] ) ) {
			wp_register_script( ACADP_PLUGIN_NAME.'-bootstrap', ACADP_PLUGIN_URL.'includes/libraries/bootstrap/bootstrap.min.js', array( 'jquery' ), '3.3.5', false );
		}
		
		wp_register_script( ACADP_PLUGIN_NAME.'-validator', ACADP_PLUGIN_URL.'includes/libraries/bootstrap/validator.min.js', array( 'jquery' ), '0.9.0', false );
		
		wp_register_script( ACADP_PLUGIN_NAME, ACADP_PLUGIN_URL.'public/js/acadp-public.js', array( 'jquery' ), ACADP_VERSION_NUM, false );
		
		if( ! empty( $recaptcha_settings['site_key'] ) && ! empty( $recaptcha_settings['forms'] ) ) {
			$recaptcha_site_key     = $recaptcha_settings['site_key'];
			$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_listing      = 0;
			$recaptcha_contact      = 0;
			$recaptcha_report_abuse = 0;
		}
		
		wp_localize_script( ACADP_PLUGIN_NAME, 'acadp', array(
				'ajax_url'                   => admin_url( 'admin-ajax.php' ),
				'maximum_images_per_listing' => $general_settings['maximum_images_per_listing'],
				'recaptcha_site_key'         => $recaptcha_site_key,				
				'recaptcha_listing'          => $recaptcha_listing,
				'recaptcha_contact'          => $recaptcha_contact,
				'recaptcha_report_abuse'     => $recaptcha_report_abuse,
				'recaptchas'                 => array( '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' )
			)
		);
		
		wp_register_script( ACADP_PLUGIN_NAME.'-google-map', 'https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false', array( ACADP_PLUGIN_NAME ), '', false );
		
		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 ), '', false );
		
		// Enqueue script dependencies
		if( is_singular('acadp_listings') ) {
			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( isset( $recaptcha_settings['forms'] ) && in_array( 'listing', $recaptcha_settings['forms'] ) ) {
				wp_enqueue_script( ACADP_PLUGIN_NAME . "-recaptcha" );
			}
		}
		
	}
	
	/**
	 * Adds the Facebook OG tags and Twitter Cards.
	 *
	 * @since    1.0.0
	 * @access   public
	 */
	public function og_metatags() {
	
		global $post;
		
		if( is_page() ) {					
			
			$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['categories'] == $post->ID ) {
					$page = 'categories';
				}
				
				if( $page_settings['locations'] == $post->ID ) {
					$page = 'locations';
				}
				
				if( in_array( $post->ID, array( $page_settings['listings'], $page_settings['user_listings'], $page_settings['category'], $page_settings['location'], $page_settings['search'] ) ) ) {
					$page = 'listings';
				}
				
			}
			
			if( isset( $socialshare_settings['pages'] ) && in_array( $page, $socialshare_settings['pages'] ) ) {
			
				echo '<meta property="og:url" content="'.get_permalink().'" />';
				echo '<meta property="og:type" content="article" />';	
				echo '<meta property="og:title" content="'.get_the_title().'" />';				
				if( 'listing' == $page ) {
					echo '<meta property="og:description" content="'.wp_trim_words( get_the_content(), 150 ).'" />';
					
					$images = get_post_meta( $post->ID, 'images', true );			
					if( isset( $images ) ) { 
						$thumbnail = wp_get_attachment_image_src( $images[0], 'full' );
						echo '<meta property="og:image" content="'.$thumbnail.'" />';
					}					
				}
				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 ) {

		global $id, $post;
		
		if( $id && $post ) return $title;
		
		if( is_singular('acadp_listings') && 'acadp_listings' == $post->post_type ) return $title;
		
		if( is_page() && in_the_loop() ) {
		
			$page_settings = get_option( 'acadp_page_settings' );
			
			// Change Category page title
			if( $id == $page_settings['category'] ) {
			
				if( $slug = get_query_var( 'acadp_category' ) ) {
					$term = get_term_by( 'slug', $slug, 'acadp_categories' );
					$title = $term->name;			
				}
				
			}
			
			// Change Location page title
			if( $id == $page_settings['location'] ) {
			
				if( $slug = get_query_var( 'acadp_location' ) ) {
					$term = get_term_by( 'slug', $slug, 'acadp_locations' );
					$title = $term->name;			
				}
				
			}
			
			// Change User Listings page title
			if( $id == $page_settings['user_listings'] ) {
			
				if( $slug = get_query_var( 'acadp_user' ) ) {
					$user = get_user_by( 'slug', $slug );
					$title = $user->display_name;		
				}
				
			}			
			
		}
		
		return $title;
	
	}
	
	/**
	 * Set the email content type.
	 *
	 * @since    1.0.0
	 * @access   public
	 *
	 * @params	 string    $content_type    Default content type.
	 */
	public function set_content_type( $content_type ) {
	
		return 'text/html';
	
	}

}