<?php

if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly

class Webdados_FB_Public {


	/* Version */
	private $version;

	/* Database options */
	private $options;

	/* Image Size temporary holder */
	private $image_size = false;

	/* BDP Post temporary holder */
	private $post = false;


	/* Construct */
	public function __construct( $options, $version ) {
		$this->options = $options;
		$this->version = $version;
	}


	/* Insert the tags on the header */
	function get_post( $post ) {
		if ( is_singular() ) {
			$this->post = $post;
		}
		return $post;
	}


	/* Insert the tags on the header */
	public function insert_meta_tags() {
		global $webdados_fb, $wp_query;

		//Open tag
		$html='
<!-- START - '.WEBDADOS_FB_PLUGIN_NAME.' '.WEBDADOS_FB_VERSION.' -->
';

		if ( apply_filters('fb_og_enabled', true) ) {
	
			//Also set Title Tag? - Needed??
			$fb_set_title_tag=0;
	
			//Init values
			$fb_locale = '';
			$fb_title = '';
			$fb_url = '';
			$fb_desc = '';
			$fb_image = '';
			$fb_type = 'article';
			$fb_author = '';
			$fb_author_meta = '';
			$fb_author_linkrelgp = '';
			$fb_author_twitter = '';
			$fb_article_pub_date = '';
			$fb_article_mod_date = '';
			$fb_image_additional = array();
			$fb_additional_tags = array(
				'name' => array(),
				'property' => array(),
			);
			$fb_publisher = trim($this->options['fb_publisher']);
			$fb_publisher_schema = trim($this->options['fb_publisher_schema']);
			$fb_publisher_twitteruser = trim($this->options['fb_publisher_twitteruser']);
	
			//Homepage Description
			switch( $this->options['fb_desc_homepage'] ) {
				case 'custom':
					$fb_desc_homepage = $this->options['fb_desc_homepage_customtext'];
					//WPML?
					if ( $webdados_fb->is_wpml_active() ) {
						global $sitepress;
						if ( ICL_LANGUAGE_CODE != $sitepress->get_default_language() ) {
							$fb_desc_homepage = icl_t( 'wd-fb-og', 'wd_fb_og_desc_homepage_customtext', $fb_desc_homepage );
						}
					}
					break;
				default:
					$fb_desc_homepage = get_bloginfo( 'description' );
					break;
			}
	
			if ( is_singular() ) {
	
				global $post;
				// Title
					//It's a Post or a Page or an attachment page - It can also be the homepage if it's set as a page
					$fb_title = esc_attr( wp_strip_all_tags( stripslashes( $post->post_title ), true ) );
					//SubHeading
					if ( isset($this->options['fb_show_subheading']) && intval($this->options['fb_show_subheading'])==1 && $webdados_fb->is_subheading_plugin_active() ) {
						if (isset($this->options['fb_subheading_position']) && $this->options['fb_subheading_position']=='before' ) {
							$fb_title = trim( trim(get_the_subheading()).' - '.trim($fb_title), ' -' );
						} else {
							$fb_title = trim( trim($fb_title).' - '.trim(get_the_subheading()), ' -' );
						}
					}
				// URL
					$fb_url = get_permalink();
				// Type if it's a homepage page
					if ( is_front_page() ) {
						/* Fix homepage type when it's a static page */
						$fb_url = get_option('home' ).(intval($this->options['fb_url_add_trailing'])==1 ? '/' : '' );
						$fb_type = trim($this->options['fb_type_homepage']=='' ? 'website' : $this->options['fb_type_homepage']);
					}
				// Description
					if ( trim($post->post_excerpt) != '' ) {
						//If there's an excerpt that's what we'll use
						$fb_desc = trim($post->post_excerpt);
					} else {
						//If not we grab it from the content
						$fb_desc = trim($post->post_content);
					}
				// Image
					if ( intval($this->options['fb_image_show'])==1 || intval($this->options['fb_image_show_schema'])==1 || intval($this->options['fb_image_show_twitter'])==1 ) {
						$fb_image = $this->get_post_image();
					}
				// Author
					$author_id = $post->post_author;
					if ( $author_id > 0 && ! ( is_page() && intval($this->options['fb_author_hide_on_pages'])==1 ) ) {
						$fb_author = get_the_author_meta('facebook', $author_id);
						$fb_author_meta = get_the_author_meta('display_name', $author_id);
						$fb_author_linkrelgp = get_the_author_meta('googleplus', $author_id);
						$fb_author_twitter = get_the_author_meta('twitter', $author_id);
					}
	
				//Published and Modified time - We should check this out and maybe have it for any kind of post...
					if ( is_singular('post' ) ) {
						$fb_article_pub_date = get_the_date('c' );
						$fb_article_mod_date = get_the_modified_date('c' );
					} else {
						//Reset dates show because we're not on posts
						$this->options['fb_article_dates_show'] = 0;
					}
				//Sections
					if ( is_singular('post' ) ) {
						$cats = get_the_category();
						if ( !is_wp_error($cats) && (is_array($cats) && count($cats)>0) ) {
							$fb_sections = array();
							foreach ($cats as $cat) {
								$fb_sections[] = $cat->name;
							}
						}
					} else {
						$this->options['fb_article_sections_show'] = 0;
					}
				// Business Directory Plugin
					if ( isset( $this->options['fb_show_businessdirectoryplugin'] ) && $webdados_fb->is_business_directory_active() ) {
						global $wpbdp;
						$bdp_action = wpbdp_current_action();
						$bdp_disable_cpt = wpbdp_get_option( 'disable-cpt' );
						$current_view_object = $wpbdp->dispatcher->current_view_object();
						switch( $bdp_action ) {
							case 'show_listing':
								$fb_title = trim( esc_attr( wp_strip_all_tags( stripslashes( $this->post->post_title ), true ) ).' - '.$fb_title, ' -' );
								$fb_set_title_tag = 1;
								$fb_url = get_permalink($this->post->ID);
								if ( trim($this->post->post_excerpt)!='' ) {
									//If there's an excerpt that's what we'll use
									$fb_desc = trim($this->post->post_excerpt);
								} else {
									//If not we grab it from the content
									$fb_desc = trim($this->post->post_content);
								}		
								if (intval($this->options['fb_image_show'])==1 || intval($this->options['fb_image_show_schema'])==1 || intval($this->options['fb_image_show_twitter'])==1) {
									$thumbdone = false;
									if ( intval($this->options['fb_image_use_featured'])==1 ) {
										//Featured
										if ( $id_attachment = get_post_thumbnail_id( $this->post->ID ) ) {
											//There's a featured/thumbnail image for this listing
											$fb_image = wp_get_attachment_url( $id_attachment, false );
											$thumbdone = true;
										} else {
										}
									}
									if ( !$thumbdone ) {
										//Main image loaded
										if ( $thumbnail_id = wpbdp_listings_api()->get_thumbnail_id( $this->post->ID ) ) {
											$fb_image = wp_get_attachment_url( $thumbnail_id, false );
											$thumbdone = true;
										}
									}
								}
						}
					}
				// WooCommerce
					if ( $webdados_fb->is_woocommerce_active() && is_product() ) {
						$fb_type = 'product';
						$product = new WC_Product( $post->ID );
						//Price
						$fb_additional_tags['property']['og_price_amount'] = array(
							$product->get_price_including_tax()
						);
						if ( function_exists('get_woocommerce_currency') ) $fb_additional_tags['property']['og_price_currency'] = array(
							get_woocommerce_currency()
						);
						$fb_additional_tags['name']['twitter_label1'] = array(
							__('Price', 'wd-fb-og')
						);
						if ( function_exists('get_woocommerce_currency') )  $fb_additional_tags['name']['twitter_data1'] = array(
							$product->get_price_including_tax().' '.get_woocommerce_currency()
						);
						//Additional product images?
						if ( intval($this->options['fb_image_show'])==1 && $this->options['fb_wc_useproductgallery']==1 ) {
							if ( $attachment_ids = $product->get_gallery_attachment_ids() ) {
								foreach ( $attachment_ids as $attachment_id ) {
									if ( $image_link = wp_get_attachment_url( $attachment_id ) ) {
										if ( trim($image_link)!='' ) {
											$fb_image_additional[] = array(
												'fb_image' => trim($image_link),
												'png_overlay' => ( intval($this->options['fb_wc_usepg_png_overlay']) ? true : false ),
											);
										}
									}
								}
							}
						}
					}
	
			} else {
	
				//Other pages - Defaults
				$fb_title = esc_attr( wp_strip_all_tags( stripslashes( get_bloginfo( 'name' ) ), true ) );
				$fb_url = ( ( !empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on' ) ? 'https://' : 'http://' ).$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];  //Not really canonical but will work for now
				$fb_image = trim( $this->options['fb_image'] );
	
				$this->options['fb_article_sections_show'] = 0;
				$this->options['fb_article_dates_show'] = 0;
				$this->options['fb_author_show'] = 0;
				$this->options['fb_author_show_meta'] = 0;
				$this->options['fb_author_show_linkrelgp'] = 0;
				$this->options['fb_author_show_twitter'] = 0;
				$this->options['fb_author_show_twitter'] = 0;
	
				//Category
				if ( is_category() ) {
					$fb_title = esc_attr( wp_strip_all_tags( stripslashes( single_cat_title( '', false ) ), true ) );
					$term = $wp_query->get_queried_object();
					$fb_url = get_term_link( $term, $term->taxonomy );
					$cat_desc = trim( esc_attr( wp_strip_all_tags( stripslashes( category_description() ), true ) ) );
					if ( trim($cat_desc)!='' ) $fb_desc = $cat_desc;
				} else {
					if ( is_tag() ) {
						$fb_title = esc_attr( wp_strip_all_tags( stripslashes( single_tag_title( '', false ) ), true ) );
						$term = $wp_query->get_queried_object();
						$fb_url = get_term_link( $term, $term->taxonomy );
						$tag_desc = trim( esc_attr( wp_strip_all_tags( stripslashes( tag_description() ), true ) ) );
						if ( trim($tag_desc)!='' ) $fb_desc = $tag_desc;
					} else {
						if (is_tax()) {
							$fb_title = esc_attr( wp_strip_all_tags( stripslashes( single_term_title( '', false ) ), true ) );
							$term = $wp_query->get_queried_object();
							$fb_url = get_term_link($term, $term->taxonomy);
							$tax_desc = trim( esc_attr( wp_strip_all_tags( stripslashes( term_description() ), true ) ) );
							if ( trim($tax_desc)!='' ) $fb_desc = $tag_desc;
							//WooCommerce
							if ( $webdados_fb->is_woocommerce_active() && intval($this->options['fb_wc_usecategthumb'])==1 && is_product_category() ) {
								if ( intval($this->options['fb_image_show'])==1 || intval($this->options['fb_image_show_schema'])==1 || intval($this->options['fb_image_show_twitter'])==1 ) {
									if ( $thumbnail_id = get_woocommerce_term_meta( $term->term_id, 'thumbnail_id', true ) ) {
										if ( $image = wp_get_attachment_url( $thumbnail_id ) ) {
											$fb_image = $image;
										}
									}
								}
							}
						} else {
							if ( is_search() ) {
								$fb_title = esc_attr( wp_strip_all_tags( stripslashes( __('Search for', 'wd-fb-og').' "'.get_search_query().'"' ), true ) );
								$fb_url = get_search_link();
							} else {
								if (is_author()) {
									$fb_title = esc_attr( wp_strip_all_tags( stripslashes( get_the_author_meta('display_name', get_query_var('author') ) ), true ) );
									$fb_url = get_author_posts_url( get_query_var('author'), get_query_var('author_name') );
								} else {
									if ( is_archive() ) {
										if ( is_day() ) {
											$fb_title = esc_attr( wp_strip_all_tags( stripslashes( get_query_var( 'day' ) . ' ' .single_month_title( ' ', false ) . ' ' . __( 'Archives', 'wd-fb-og' ) ), true ) );
											$fb_url = get_day_link( get_query_var( 'year' ), get_query_var( 'monthnum' ), get_query_var( 'day' ) );
										} else {
											if ( is_month() ) {
												$fb_title = esc_attr( wp_strip_all_tags( stripslashes( single_month_title( ' ', false ) . ' ' . __( 'Archives', 'wd-fb-og' ) ), true ) );
												$fb_url = get_month_link( get_query_var( 'year' ), get_query_var( 'monthnum' ) );
											} else {
												if ( is_year() ) {
													$fb_title = esc_attr( wp_strip_all_tags( stripslashes( get_query_var( 'year' ) . ' ' . __( 'Archives', 'wd-fb-og' ) ), true ) );
													$fb_url = get_year_link( get_query_var( 'year' ) );
												}
											}
										}
									} else {
										if (is_front_page()) {
											$fb_url = get_option('home').(intval($this->options['fb_url_add_trailing'])==1 ? '/' : '');
											$fb_type = trim( $this->options['fb_type_homepage']=='' ? 'website' : $this->options['fb_type_homepage'] );
											$fb_desc = $fb_desc_homepage;
										} else {
											//Others... Defaults already set up there
										}
									}
								}
							}
						}
					}
				}
			}
	
			//og:type for WPML root page?
			if ( $webdados_fb->is_wpml_active() ) {
				if ( class_exists('WPML_Root_Page') ) {
					if ( WPML_Root_Page::is_current_request_root() ) {
						$fb_type = trim( $this->options['fb_type_homepage']=='' ? 'website' : $this->options['fb_type_homepage'] );
					}
				}
			}
	
	
			//Default description, if empty until now
			if ( trim($fb_desc)=='' ) {
				switch( $this->options['fb_desc_default_option'] ) {
					case 'custom':
						$fb_desc = $this->options['fb_desc_default'];
						//WPML?
						if ( $webdados_fb->is_wpml_active() ) {
							global $sitepress;
							if ( ICL_LANGUAGE_CODE != $sitepress->get_default_language() ) {
								$fb_desc = icl_t( 'wd-fb-og', 'wd_fb_og_fb_desc_default', $fb_desc );
							}
						}
						break;
					default:
						$fb_desc = $fb_desc_homepage;
						break;
				}
			}
	
			//Trim description
			$fb_desc = trim( str_replace('&nbsp;', ' ', $fb_desc) ); //Non-breaking spaces are usefull on a meta description. We'll just convert them to normal spaces to really trim it
			$fb_desc = trim(
						intval($this->options['fb_desc_chars'])>0
						?
						mb_substr( wp_strip_all_tags( strip_shortcodes( stripslashes( $fb_desc ), true ) ), 0, intval($this->options['fb_desc_chars']) )
						:
						wp_strip_all_tags( strip_shortcodes( stripslashes( $fb_desc ), true ) )
			);
	
			//YOAST SEO?
			if ( $this->options['fb_show_wpseoyoast']==1 ) {
				if ( $webdados_fb->is_yoast_seo_active() ) {
					$wpseo = WPSEO_Frontend::get_instance();
					//Title
					$fb_title_temp = $wpseo->title(false);
					$fb_title = wp_strip_all_tags( trim($fb_title_temp)!='' ? trim($fb_title_temp) : $fb_title, true);
					//Title - SubHeading plugin
					if ( $fb_title_temp!='' && $this->options['fb_show_subheading']==1 ) {
						if ( $webdados_fb->is_subheading_plugin_active() ) {
							if ( isset($this->options['fb_subheading_position']) && $this->options['fb_subheading_position']=='before' ) {
								$fb_title = trim( trim( get_the_subheading() ).' - '.trim($fb_title), ' -');
							} else {
								$fb_title = trim( trim( $fb_title ).' - '.trim( get_the_subheading() ), ' -');
							}
						}
					}
					//URL
					$fb_url_temp = $wpseo->canonical(false);
					$fb_url = wp_strip_all_tags( trim($fb_url_temp)!='' ? trim($fb_url_temp) : $fb_url, true);
					//Description
					$fb_desc_temp = $wpseo->metadesc(false);
					$fb_desc = wp_strip_all_tags( trim($fb_desc_temp)!='' ? trim($fb_desc_temp) : $fb_desc, true);
				}
			}
	
			//All in One SEO Pack?
			if ( $this->options['fb_show_aioseop']==1 ) {
				if ( $webdados_fb->is_aioseop_active() ) {
					global $aiosp;
					//Title - Why are we getting the first post title on archives and homepage...?!?
					$fb_title_temp = $aiosp->orig_title;
					$fb_title = wp_strip_all_tags( trim($fb_title_temp)!='' ? trim($fb_title_temp) : $fb_title, true);
					//Title - SubHeading plugin
					if ( $fb_title_temp!='' && $this->options['fb_show_subheading']==1 ) {
						if ( $webdados_fb->is_subheading_plugin_active() ) {
							if ( isset($this->options['fb_subheading_position']) && $this->options['fb_subheading_position']=='before' ) {
								$fb_title = trim( trim( get_the_subheading() ).' - '.trim($fb_title), ' -');
							} else {
								$fb_title = trim( trim( $fb_title ).' - '.trim( get_the_subheading() ), ' -');
							}
						}
					}
					//URL - See aioseop_class.php 3898 - We have a problem because wp_query is not the same right now
					/*$fb_url_temp = '';
					$aioseop_options = get_option( 'aioseop_options' );
					$opts = $aiosp->meta_opts;
					var_dump($wp_query);
					$show_page = true;
					if ( ! empty( $aioseop_options['aiosp_no_paged_canonical_links'] ) ) {
						$show_page = false;
					}
					if ( $aioseop_options['aiosp_can'] ) {
						if ( ! empty( $aioseop_options['aiosp_customize_canonical_links'] ) && ! empty( $opts['aiosp_custom_link'] ) ) {
							$fb_url_temp = $opts['aiosp_custom_link'];
						}
						if ( empty( $url ) ) {
							$fb_url_temp = $aiosp->aiosp_mrt_get_url( $wp_query, $show_page );
						}
			
						$fb_url_temp = $aiosp->validate_url_scheme( $fb_url_temp );
			
						$fb_url_temp = apply_filters( 'aioseop_canonical_url', $fb_url_temp );
					}
					var_dump($fb_url_temp);
					$fb_url = wp_strip_all_tags( trim($fb_url_temp)!='' ? trim($fb_url_temp) : $fb_url, true);*/
					//Description - Why are we getting the first post description on archives and homepage...?!?
					if ( is_home() && ! is_front_page() ) {
						$post = aiosp_common::get_blog_page();
					} else {
						$post = $aiosp->get_queried_object();
					}
					$fb_desc_temp = apply_filters( 'aioseop_description', $aiosp->get_main_description( $post ) );
					$fb_desc = wp_strip_all_tags( trim($fb_desc_temp)!='' ? trim($fb_desc_temp) : $fb_desc, true);
	
				}
			}
	
			//Apply Filters
			$fb_locale = apply_filters('fb_og_locale', $fb_locale);
			$fb_title = apply_filters('fb_og_title', $fb_title);
			$fb_url = apply_filters('fb_og_url', $fb_url);
			$fb_type = apply_filters('fb_og_type', $fb_type);
			$fb_desc = apply_filters('fb_og_desc', $fb_desc);
			$fb_image = apply_filters('fb_og_image', $fb_image);
			$fb_image_additional = apply_filters('fb_og_image_additional', $fb_image_additional);
	
			//Image size
			$fb_image_size = false;
			if ( intval($this->options['fb_image_show'])==1 && trim($fb_image)!='' ) {
				if ( intval($this->options['fb_image_size_show'])==1 ) {
					if ( isset($this->image_size) && is_array($this->image_size) ) { //Already fetched
						$fb_image_size = $this->image_size;
					} else {
						$fb_image_size = $this->get_open_graph_image_size($fb_image);
					}
				}
			} else {
				$this->options['fb_image_show'] = 0;
			}
	
			//Image overlay - Single?
			if ( intval($this->options['fb_image_show'])==1 && intval($this->options['fb_image_overlay'])==1 && apply_filters('fb_og_image_overlay', true, $fb_image) ) {
				//Single
				$temp_fb_image_overlay = $this->get_image_with_overlay($fb_image);
				if ( $temp_fb_image_overlay['overlay'] ) {
					$fb_image = $temp_fb_image_overlay['fb_image'];
					//We know the exact size now. We better just show it, right?
					$this->options['fb_image_size_show'] = 1;
					$fb_image_size = array(WEBDADOS_FB_W, WEBDADOS_FB_H);
				}
				//Additional
				if ( isset($fb_image_additional) && is_array($fb_image_additional) && count($fb_image_additional)>0 ) {
					foreach($fb_image_additional as $key => $value ) {
						if ($value['png_overlay']) {
							$temp_fb_image_overlay = $this->get_image_with_overlay($value['fb_image']);
							if ( $temp_fb_image_overlay['overlay'] ) {
								$fb_image_additional[$key]['fb_image'] = $temp_fb_image_overlay['fb_image'];
							}
						}
					}
				}
			}
			
			//No spaces on URLs
			if ( isset($fb_url) && trim($fb_url)!='' )							$fb_url=				str_replace(' ', '%20', trim($fb_url));
			if ( isset($fb_publisher) && trim($fb_publisher)!='' )				$fb_publisher=			str_replace(' ', '%20', trim($fb_publisher));
			if ( isset($fb_publisher_schema) && trim($fb_publisher_schema)!='' )	$fb_publisher_schema=	str_replace(' ', '%20', trim($fb_publisher_schema));
			if ( isset($fb_author) && trim($fb_author)!='' )						$fb_author=				str_replace(' ', '%20', trim($fb_author));
			if ( isset($fb_author_linkrelgp) && trim($fb_author_linkrelgp)!='' )	$fb_author_linkrelgp=	str_replace(' ', '%20', trim($fb_author_linkrelgp));
			if ( isset($fb_image) && trim($fb_image)!='' )						$fb_image=				str_replace(' ', '%20', trim($fb_image));
			if ( isset($fb_image_additional) && is_array($fb_image_additional) && count($fb_image_additional) ) {
				foreach ( $fb_image_additional as $key => $value ) {
					$fb_image_additional[$key]['fb_image'] = str_replace( ' ', '%20', trim($value['fb_image']) );
				}
			}
			
			//If there's still no description let's just add the title as a last resort
			if ( trim($fb_desc)=='' ) $fb_desc = $fb_title;
	
			//Print tags
				// Facebook
			$html.=' <!-- Facebook Open Graph -->
';
				//Locale
				if ( intval($this->options['fb_locale_show'])==1 ) $html.='  <meta property="og:locale" content="'.trim(esc_attr( trim($this->options['fb_locale'])!='' ? trim($this->options['fb_locale']) : trim(get_locale()) )).'"/>
';
				//Site name
				if ( intval($this->options['fb_sitename_show'])==1 ) $html.='  <meta property="og:site_name" content="'.trim(esc_attr(get_bloginfo('name' ))).'"/>
';
				//Title
				if ( intval($this->options['fb_title_show'])==1 && trim($fb_title)!='' ) $html.='  <meta property="og:title" content="'.trim(esc_attr($fb_title)).'"/>
';
				//URL
				if ( intval($this->options['fb_url_show'])==1 && trim($fb_url)!='' ) $html.='  <meta property="og:url" content="'.trim(esc_attr($fb_url)).'"/>
';
				//Type
				if ( intval($this->options['fb_type_show'])==1 && trim($fb_type)!='' ) $html.='  <meta property="og:type" content="'.trim(esc_attr($fb_type)).'"/>
';
				//Description
				if ( intval($this->options['fb_desc_show'])==1 && trim($fb_desc)!='' ) $html.='  <meta property="og:description" content="'.trim(esc_attr($fb_desc)).'"/>
';
				//Image
				if( intval($this->options['fb_image_show'])==1 && trim($fb_image)!='' ) $html.='  <meta property="og:image" content="'.trim(esc_attr($fb_image)).'"/>
';
				//Additional Images
				if( intval($this->options['fb_image_show'])==1  && isset($fb_image_additional) && is_array($fb_image_additional) && count($fb_image_additional)>0 ) {
					foreach ($fb_image_additional as $fb_image_additional_temp) {
						$html.='  <meta property="og:image" content="'.trim(esc_attr($fb_image_additional_temp['fb_image'])).'"/>
';
					}
				} else {
					//Image Size - We only show the image size if we only have one image
					if( intval($this->options['fb_image_size_show'])==1 && isset($fb_image_size) && is_array($fb_image_size) ) $html.='  <meta property="og:image:width" content="'.intval(esc_attr($fb_image_size[0])).'"/>
  <meta property="og:image:height" content="'.intval(esc_attr($fb_image_size[1])).'"/>
';
				}
				//Dates
				if ( intval($this->options['fb_article_dates_show'])==1 && trim($fb_article_pub_date)!='' ) $html.='  <meta property="article:published_time" content="'.trim(esc_attr($fb_article_pub_date)).'"/>
';
				if ( intval($this->options['fb_article_dates_show'])==1 && trim($fb_article_mod_date)!='') $html.='  <meta property="article:modified_time" content="'.trim(esc_attr($fb_article_mod_date)).'" />
  <meta property="og:updated_time" content="'.trim(esc_attr($fb_article_mod_date)).'" />
';
				//Sections
				if (intval($this->options['fb_article_sections_show'])==1 && isset($fb_sections) && is_array($fb_sections) && count($fb_sections)>0) {
					foreach($fb_sections as $fb_section) {
						$html.='  <meta property="article:section" content="'.trim(esc_attr($fb_section)).'"/>
';
					}
				}
				//Author
				if ( intval($this->options['fb_author_show'])==1 && $fb_author!='') $html.='  <meta property="article:author" content="'.trim(esc_attr($fb_author)).'"/>
';
				//Publisher
				if ( intval($this->options['fb_publisher_show'])==1 && trim($fb_publisher)!='') $html.='  <meta property="article:publisher" content="'.trim(esc_attr($fb_publisher)).'"/>
';
				//App ID
				if ( intval($this->options['fb_app_id_show'])==1 && trim($this->options['fb_app_id'])!='' ) $html.='  <meta property="fb:app_id" content="'.trim(esc_attr($this->options['fb_app_id'])).'"/>
';
				//Admins
				if ( intval($this->options['fb_admin_id_show'])==1 && trim($this->options['fb_admin_id'])!='' ) $html.='  <meta property="fb:admins" content="'.trim(esc_attr($this->options['fb_admin_id'])).'"/>
';
			// Schema
		$html.=' <!-- Google+ / Schema.org -->
';
				//Title
				if ( intval($this->options['fb_title_show_schema'])==1 && trim($fb_title)!='' ) $html.='  <meta itemprop="name" content="'.trim(esc_attr($fb_title)).'"/>
';
				//Description
				if ( intval($this->options['fb_desc_show_schema'])==1 && trim($fb_desc)!='' ) $html.='  <meta itemprop="description" content="'.trim(esc_attr($fb_desc)).'"/>
';
				//Image
				if( intval($this->options['fb_image_show_schema'])==1 && trim($fb_image)!='' ) $html.='  <meta itemprop="image" content="'.trim(esc_attr($fb_image)).'"/>
';
				//Author
				if ( intval($this->options['fb_author_show_linkrelgp'])==1 && trim($fb_author_linkrelgp)!='') $html.='  <link rel="author" href="'.trim(esc_attr($fb_author_linkrelgp)).'"/>
';
				//Publisher
				if ( intval($this->options['fb_publisher_show_schema'])==1 && trim($fb_publisher_schema)!='') $html.='  <link rel="publisher" href="'.trim(esc_attr($fb_publisher_schema)).'"/>
';
			// Twitter
		$html.=' <!-- Twitter Cards -->
';
				//Title
				if ( intval($this->options['fb_title_show_twitter'])==1 && trim($fb_title)!='' ) $html.='  <meta name="twitter:title" content="'.trim(esc_attr($fb_title)).'"/>
';
				//URL
				if ( intval($this->options['fb_url_show_twitter'])==1 && trim($fb_url)!='' ) $html.='  <meta name="twitter:url" content="'.trim(esc_attr($fb_url)).'"/>
';
				//Description
				if ( intval($this->options['fb_desc_show_twitter'])==1 && trim($fb_desc)!='' ) $html.='  <meta name="twitter:description" content="'.trim(esc_attr($fb_desc)).'"/>
';
				//Image
				if( intval($this->options['fb_image_show_twitter'])==1 && trim($fb_image)!='' ) $html.='  <meta name="twitter:image" content="'.trim(esc_attr($fb_image)).'"/>
';
				//Twitter Card
				if( intval($this->options['fb_title_show_twitter'])==1 || intval($this->options['fb_url_show_twitter'])==1 || intval($this->options['fb_desc_show_twitter'])==1 || intval($this->options['fb_publisher_show_twitter'])==1 || intval($this->options['fb_image_show_twitter'])==1 ) $html.='  <meta name="twitter:card" content="'.trim(esc_attr($this->options['fb_twitter_card_type'])).'"/>
';
				//Author
				if ( intval($this->options['fb_author_show_twitter'])==1 && trim($fb_author_twitter)!='' ) $html.='  <meta name="twitter:creator" content="@'.trim(esc_attr( $fb_author_twitter )).'"/>
';
				//Publisher
				if ( intval($this->options['fb_publisher_show_twitter'])==1 && trim($fb_publisher_twitteruser)!='') $html.='  <meta name="twitter:site" content="@'.trim(esc_attr($fb_publisher_twitteruser)).'"/>
';
			// SEO
		$html.=' <!-- SEO -->
';
				//Title
				if ( intval($fb_set_title_tag)==1 && trim($fb_title)!='' ) {
					//Does nothing so far. We try to create the <title> tag but it's too late now
					//We should use wp_title(), but do we want to? This is only because Business Directory Plugin and they seem to have it covered by now...
				}
				//URL
				if ( intval($this->options['fb_url_canonical'])==1 ) $html.='  <link rel="canonical" href="'.trim(esc_attr($fb_url)).'"/>
';
				//Description
				if ( intval($this->options['fb_desc_show_meta'])==1 && trim($fb_desc)!='' ) $html.='  <meta name="description" content="'.trim(esc_attr($fb_desc)).'"/>
';
				//Author
				if (intval($this->options['fb_author_show_meta'])==1 && $fb_author_meta!='') $html.='  <meta name="author" content="'.trim(esc_attr($fb_author_meta)).'"/>
';
				//Publisher
				if ( intval($this->options['fb_publisher_show_meta'])==1 ) $html.='  <meta name="publisher" content="'.trim(esc_attr(get_bloginfo('name' ))).'"/>
';
			// SEO
		$html.=' <!-- Misc. tags -->
';
				foreach ($fb_additional_tags as $type => $tags) {
					foreach($tags as $tag => $values) {
						foreach($values as $value) {
							$html.='  <meta '.$type.'="'.str_replace('_', ':', trim($tag)).'" content="'.trim(esc_attr($value)).'"/>
';	
						}
					}
				}
		} else {

			$html.=' <!-- Removed by fb_og_enabled filter -->
';

		}
	
		//Close tag
		$html.='<!-- END - '.WEBDADOS_FB_PLUGIN_NAME.' '.WEBDADOS_FB_VERSION.' -->

';
		echo $html;

	}


	/* Get post image - Singular pages */
	private function get_post_image() {
		global $post;
		$thumbdone = false;
		$fb_image = '';
		$minsize = intval($this->options['fb_image_min_size']);
		//Attachment page? - This overrides the other options
		if ( is_attachment() ) {
			if ( $temp=wp_get_attachment_image_src(null, 'full' ) ) {
				$fb_image = trim($temp[0]);
				$img_size = array(intval($temp[1]), intval($temp[2]));
				if ( trim($fb_image)!='' ) {
					$thumbdone=true;
				}
			}
		}
		//Specific post image
		if ( !$thumbdone ) {
			if ( intval($this->options['fb_image_use_specific'])==1 ) {
				if ( $fb_image = trim(get_post_meta($post->ID, '_webdados_fb_open_graph_specific_image', true)) ) {
					if ( trim($fb_image)!='' ) {
						$thumbdone=true;
					}
				}
			}
		}
		//Featured image
		if ( !$thumbdone ) {
			if ( function_exists('get_post_thumbnail_id' ) ) {
				if ( intval($this->options['fb_image_use_featured'])==1 ) {
					if ( $id_attachment=get_post_thumbnail_id($post->ID) ) {
						//There's a featured/thumbnail image for this post
						$fb_image = wp_get_attachment_url($id_attachment, false);
						$thumbdone = true;
					}
				}
			}
		}
		//From post/page content
		if ( !$thumbdone ) {
			if ( intval($this->options['fb_image_use_content'])==1 ) {
				$imgreg = '/<img .*src=["\']([^ ^"^\']*)["\']/';
				preg_match_all($imgreg, trim($post->post_content), $matches);
				if ($matches[1]) {
					$imagetemp=false;
					foreach($matches[1] as $image) {
						//There's an image on the content
						$pos = strpos($image, site_url());
						if ($pos === false) {
							if (stristr($image, 'http://' ) || stristr($image, 'https://' ) || mb_substr($image, 0, 2)=='//' ) {
								if (mb_substr($image, 0, 2)=='//' ) $image=((!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on' ) ? 'https:' : 'http:' ).$image;
								//Complete URL - offsite
								//if ( intval(ini_get('allow_url_fopen' ))==1 ) {
									$imagetemp=$image;
									$imagetempsize=$imagetemp;
								//} else {
									//If it's offsite we can't getimagesize'it, so we won't use it
									//We could save a temporary version locally and then getimagesize'it but do we want to do this every single time?
								//}
							} else {
								//Partial URL - we guess it's onsite because no http(s)://
								$imagetemp=site_url().$image;
								$imagetempsize=(
									intval(ini_get('allow_url_fopen' ))==1
									?
									(
										intval($this->options['fb_adv_force_local'])==1
										?
										ABSPATH.str_replace(trailingslashit(site_url()), '', $imagetemp)
										:
										$imagetemp
									)
									:
									ABSPATH.str_replace(trailingslashit(site_url()), '', $imagetemp)
								);
							}
						} else {
							//Complete URL - onsite
							$imagetemp=$image;
							$imagetempsize=(
								intval(ini_get('allow_url_fopen' ))==1
								?
								(
									intval($this->options['fb_adv_force_local'])==1
									?
									ABSPATH.str_replace(trailingslashit(site_url()), '', $imagetemp)
									:
									$imagetemp
								)
								:
								ABSPATH.str_replace(trailingslashit(site_url()), '', $imagetemp)
							);
						}
						if ($imagetemp) {
							if ($img_size = $this->get_open_graph_image_size($imagetempsize)) {
								if ($img_size[0] >= $minsize && $img_size[1] >= $minsize) {
									$fb_image = $imagetemp;
									$thumbdone = true;
									break;
								}
							}
						}
					}
				}
			}
		}
		//From media gallery
		if ( !$thumbdone ) {
			if ( intval($this->options['fb_image_use_media'])==1 ) {
				$images = get_posts(array('post_type' => 'attachment','numberposts' => -1,'post_status' => null,'order' => 'ASC','orderby' => 'menu_order','post_mime_type' => 'image','post_parent' => $post->ID));
				if ( $images ) {
					foreach( $images as $image ) {
						$imagetemp = wp_get_attachment_url($image->ID, false);
						$imagetempsize = (
							intval(ini_get('allow_url_fopen' ))==1
							?
							(
								intval($this->options['fb_adv_force_local'])==1
								?
								ABSPATH.str_replace(trailingslashit(site_url()), '', $imagetemp)
								:
								$imagetemp
							)
							:
							ABSPATH.str_replace(trailingslashit(site_url()), '', $imagetemp)
						);
						if ( $img_size = $this->get_open_graph_image_size($imagetempsize) ) {
							if ($img_size[0] >= $minsize && $img_size[1] >= $minsize) {
								$fb_image = $imagetemp;
								$thumbdone = true;
								break;
							}
						}
					}
				}
			}
		}
		//From default
		if ( !$thumbdone ) {
			if ( intval($this->options['fb_image_use_default'])==1 ) {
				//Well... We sure did try. We'll just keep the default one!
				$fb_image = $this->options['fb_image'];
			} else {
				//User chose not to use default on pages/posts
				$fb_image = '';
			}
		}
		//Return
		return $fb_image;

	}


	/* Image with overlay URL */
	private function get_image_with_overlay($fb_image) {
		$fb_image_parsed = parse_url($fb_image);
		//Only if the image is hosted locally
		if ( $fb_image_parsed['host']==$_SERVER['HTTP_HOST'] ) {
			$fb_image = plugins_url('/wonderm00ns-simple-facebook-open-graph-tags/fbimg.php?img='.urlencode($fb_image));
			return array(
				'overlay'	=> true,
				'fb_image'	=> $fb_image,
			);
		}
		return array(
			'overlay'	=> false,
			'fb_image'	=> $fb_image,
		);
	}


	/* Get image size */
	private function get_open_graph_image_size( $image ) {
		$transient_key = 'webdados_og_image_size_' . md5($image);
		$transient_val = get_transient($transient_key);
		if ($transient_val) {
			return $transient_val;
		}
		if ( stristr($image, 'http://' ) || stristr($image, 'https://' ) || mb_substr($image, 0, 2)=='//' ) {
			if ( function_exists('curl_version' ) && function_exists('imagecreatefromstring' ) ) {
				//We'll get just a part of the image to speed things up. From http://stackoverflow.com/questions/4635936/super-fast-getimagesize-in-php
				$headers = array(
					"Range: bytes=0-32768"
				);
				$curl = curl_init($image);
				curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
				curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
				//Set HTTP REFERER and USER AGENT just in case. Some servers may have hotlinking protection
				curl_setopt($curl, CURLOPT_REFERER, ((!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on' ) ? 'https://' : 'http://' ).$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);
				curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
				if ( $data = curl_exec($curl) ) {
					if ( $im = @imagecreatefromstring($data) ) { //Mute errors because we're not loading the all image
						if ( $x=imagesx($im) ) {
							//We have to fake the image type - For RSS
							$ext = pathinfo($image, PATHINFO_EXTENSION);
							switch(strtolower($ext)) {
								case 'gif':
									$type=1;
									break;
								case 'jpg':
								case 'jpeg':
									$type=2;
									break;
								case 'png':
									$type=3;
									break;
								default:
									$type=2;
									break;
							}
							$img_size = array($x, imagesy($im), $type, '' );
						} else {
							$img_size = false;
						}
					} else {
						$img_size = false;
					}
				} else {
					$img_size = false;
				}
				curl_close($curl);
			} else {
				if ( intval(ini_get('allow_url_fopen' ))==1 ) {
					$img_size = getimagesize($image);
				} else {
					//We give up!
					$img_size = false;
				}
			}
		} else {
			//Local path
			$img_size = getimagesize($image);
		}
		if ($img_size) {
			set_transient($transient_key, $img_size, DAY_IN_SECONDS);
		}
		$this->image_size = $img_size;
		return $img_size;
	}


	/* Add Open Graph Namespace */
	public function add_open_graph_namespace($output) {
		if (stristr($output,'xmlns:og' )) {
			//Already there
		} else {
			//Let's add it
			$output=$output . ' xmlns:og="http://ogp.me/ns#"';
		}
		if (stristr($output,'xmlns:fb' )) {
			//Already there
		} else {
			//Let's add it
			$output=$output . ' xmlns:fb="http://ogp.me/ns/fb#"';
		}
		return $output;
	}


	/* Add Schema itemtype */
	public function add_schema_itemtype($output) {
		if ( intval($this->options['fb_type_show_schema'])==1 ) {
			$fb_type_schema = '';
			if ( is_front_page() ) {
				$fb_type_schema = trim($this->options['fb_type_schema_homepage'])=='' ? 'WebSite' : trim($this->options['fb_type_schema_homepage']);
			} else {
				$fb_type_schema = trim($this->options['fb_type_schema_post'])=='' ? 'Article' : trim($this->options['fb_type_schema_post']);
			}
			$fb_type_schema = apply_filters('fb_type_schema', $fb_type_schema );
			if ( $fb_type_schema!='' ) $output=$output . ' itemscope itemtype="http://schema.org/'.esc_attr($fb_type_schema).'"';
		}
		return $output;
	}


	/* Images on feed */
	public function images_on_feed_yahoo_media_tag() {
		if ( intval($this->options['fb_image_rss'])==1 ) {
			//Even if it's comments feed, not a problem
			echo 'xmlns:media="http://search.yahoo.com/mrss/"';
		}
	}
	public function images_on_feed_image() {
		if ( intval($this->options['fb_image_rss'])==1 ) {
			//Only runs on posts feed, not comments, so cool!
			$fb_image = $this->get_post_image();
			if ( $fb_image!='' ) {
				$uploads = wp_upload_dir();
				$url = parse_url($fb_image);
				$path = $uploads['basedir'] . preg_replace( '/.*uploads(.*)/', '${1}', $url['path'] );
				if ( file_exists($path) ) {
					$filesize = filesize($path);
					$url = $path;
				} else {		
					$header = get_headers($fb_image, 1);					   
					$filesize = $header['Content-Length'];	
					$url = $fb_image;				
				}
				list( $width, $height, $type, $attr ) = $this->get_open_graph_image_size( $url );
				echo '<enclosure url="' . $fb_image . '" length="' . $filesize . '" type="'.image_type_to_mime_type($type).'"/>';
				echo '<media:content url="'.$fb_image.'" width="'.$width.'" height="'.$height.'" medium="image" type="'.image_type_to_mime_type($type).'"/>';
			}
		}
	}


}

?>