/**
* Generate Twitter Cards metadata for the content pages.
*/
function amt_add_twitter_cards_metadata_head($post, $attachments, $embedded_media, $options)
{
if (apply_filters('amt_exclude_twitter_cards_metadata', false)) {
return array();
}
$do_auto_twitter = $options["auto_twitter"] == "1" ? true : false;
if (!$do_auto_twitter) {
return array();
}
$metadata_arr = array();
// Custom content override
if (amt_is_custom($post, $options)) {
// Return metadata with:
// add_filter( 'amt_custom_metadata_twitter_cards', 'my_function', 10, 5 );
// Return an array of meta tags. Array item format: ['key_can_be_whatever'] = '<meta name="foo" content="bar" />'
$metadata_arr = apply_filters('amt_custom_metadata_twitter_cards', $metadata_arr, $post, $options, $attachments, $embedded_media);
return $metadata_arr;
}
// Front page and archives
if (!is_singular() && !amt_is_static_home() && !amt_is_static_front_page() || amt_is_default_front_page() || is_category() || is_tag() || is_tax() || is_post_type_archive()) {
// Note1: is_front_page() is used for the case in which a static page is used as the front page.
// Note2: product groups should pass the is_tax() validation, so no need for
// amt_is_product_group(). We do not support other product groups.
// Default front page containing latest posts
// Add a basic Twitter Card to the default home page that contains latest posts.
// If static pages are used as the front page or the latest-posts page,
// then they are treated as content and are processed below.
if (amt_is_default_front_page()) {
// Generate the card only if a publisher username has been set in the publisher settings
if (!empty($options['social_main_twitter_publisher_username'])) {
// Type
$metadata_arr[] = '<meta name="twitter:card" content="' . amt_get_default_twitter_card_type($options) . '" />';
// Creator
$metadata_arr[] = '<meta name="twitter:creator" content="@' . esc_attr($options['social_main_twitter_publisher_username']) . '" />';
// Publisher
$metadata_arr[] = '<meta name="twitter:site" content="@' . esc_attr($options['social_main_twitter_publisher_username']) . '" />';
// Title
// Note: Contains multipage information
$metadata_arr['twitter:title'] = '<meta name="twitter:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// Site description - Note: Contains multipage information through amt_process_paged()
$site_description = amt_get_site_description($options);
if (empty($site_description)) {
$site_description = get_bloginfo('description');
}
if (!empty($site_description)) {
$metadata_arr[] = '<meta name="twitter:description" content="' . esc_attr(amt_process_paged($site_description)) . '" />';
}
// Image. Use the default image (if set).
$image_data = amt_get_default_image_data();
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_index', 'full');
$image_meta_tags = amt_get_twitter_cards_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
}
//$image_url = apply_filters( 'amt_twitter_cards_image_url_index', $options["default_image_url"] );
//$metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw( $image_url ) . '" />';
}
// Taxonomy archives
// Note: product groups should pass the is_tax() validation, so no need for
// amt_is_product_group(). We do not support other product groups.
} elseif (is_category() || is_tag() || is_tax()) {
// Taxonomy term object.
// When viewing taxonomy archives, the $post object is the taxonomy term object. Check with: var_dump($post);
$tax_term_object = $post;
//var_dump($tax_term_object);
// Generate the card only if a publisher username has been set in the publisher settings
if (!empty($options['social_main_twitter_publisher_username'])) {
// Type
$metadata_arr[] = '<meta name="twitter:card" content="' . amt_get_default_twitter_card_type($options) . '" />';
// Creator
$metadata_arr[] = '<meta name="twitter:creator" content="@' . esc_attr($options['social_main_twitter_publisher_username']) . '" />';
// Publisher
$metadata_arr[] = '<meta name="twitter:site" content="@' . esc_attr($options['social_main_twitter_publisher_username']) . '" />';
// Title
// Note: Contains multipage information
$metadata_arr['twitter:title'] = '<meta name="twitter:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// Description
// If set, the description of the custom taxonomy term is used in the 'description' metatag.
// Otherwise, a generic description is used.
// Here we sanitize the provided description for safety
$description_content = sanitize_text_field(amt_sanitize_description(term_description($tax_term_object->term_id, $tax_term_object->taxonomy)));
// Note: Contains multipage information through amt_process_paged()
if (empty($description_content)) {
// Add a filtered generic description.
// Filter name
if (is_category()) {
$generic_description = apply_filters('amt_generic_description_category_archive', __('Content filed under the %s category.', 'add-meta-tags'));
} elseif (is_tag()) {
$generic_description = apply_filters('amt_generic_description_tag_archive', __('Content tagged with %s.', 'add-meta-tags'));
} elseif (is_tax()) {
// Construct the filter name. Template: ``amt_generic_description_TAXONOMYSLUG_archive``
$taxonomy_description_filter_name = sprintf('amt_generic_description_%s_archive', $tax_term_object->taxonomy);
// var_dump($taxonomy_description_filter_name);
// Generic description
$generic_description = apply_filters($taxonomy_description_filter_name, __('Content filed under the %s taxonomy.', 'add-meta-tags'));
}
// Final generic description
$generic_description = sprintf($generic_description, single_term_title($prefix = '', $display = false));
$metadata_arr[] = '<meta name="twitter:description" content="' . esc_attr(amt_process_paged($generic_description)) . '" />';
} else {
$metadata_arr[] = '<meta name="twitter:description" content="' . esc_attr(amt_process_paged($description_content)) . '" />';
}
// Image
// Use an image from the 'Global image override' field.
// Otherwise, use a user defined image via filter.
// Otherwise use default image.
$image_data = amt_get_image_data(amt_get_term_meta_image_url($tax_term_object->term_id));
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_index', 'full');
$image_meta_tags = amt_get_twitter_cards_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
} else {
// First filter using a term/taxonomy agnostic filter name.
$taxonomy_image_url = apply_filters('amt_taxonomy_force_image_url', '', $tax_term_object);
if (empty($taxonomy_image_url)) {
// Second filter (term/taxonomy dependent).
// Construct the filter name. Template: ``amt_taxonomy_image_url_TAXONOMYSLUG_TERMSLUG``
$taxonomy_image_url_filter_name = sprintf('amt_taxonomy_image_url_%s_%s', $tax_term_object->taxonomy, $tax_term_object->slug);
//var_dump($taxonomy_image_url_filter_name);
// The default image, if set, is used by default.
$taxonomy_image_url = apply_filters($taxonomy_image_url_filter_name, $options["default_image_url"]);
}
if (!empty($taxonomy_image_url)) {
$image_data = amt_get_image_data($taxonomy_image_url);
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_index', 'full');
$image_meta_tags = amt_get_twitter_cards_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
}
//$metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw( $taxonomy_image_url ) . '" />';
}
}
}
// Custom Post type Archives
} elseif (is_post_type_archive()) {
// Custom post type object.
// When viewing custom post type archives, the $post object is the custom post type object. Check with: var_dump($post);
$post_type_object = $post;
//var_dump($post_type_object);
// Generate the card only if a publisher username has been set in the publisher settings
if (!empty($options['social_main_twitter_publisher_username'])) {
// Type
$metadata_arr[] = '<meta name="twitter:card" content="' . amt_get_default_twitter_card_type($options) . '" />';
// Creator
$metadata_arr[] = '<meta name="twitter:creator" content="@' . esc_attr($options['social_main_twitter_publisher_username']) . '" />';
// Publisher
$metadata_arr[] = '<meta name="twitter:site" content="@' . esc_attr($options['social_main_twitter_publisher_username']) . '" />';
// Title
// Note: Contains multipage information
$metadata_arr['twitter:title'] = '<meta name="twitter:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// Description
// Note: Contains multipage information through amt_process_paged()
// Add a filtered generic description.
// Construct the filter name. Template: ``amt_generic_description_posttype_POSTTYPESLUG_archive``
$custom_post_type_description_filter_name = sprintf('amt_generic_description_posttype_%s_archive', $post_type_object->name);
// var_dump($custom_post_type_description_filter_name);
// Generic description
$generic_description = apply_filters($custom_post_type_description_filter_name, __('%s archive.', 'add-meta-tags'));
// Final generic description
$generic_description = sprintf($generic_description, post_type_archive_title($prefix = '', $display = false));
$metadata_arr[] = '<meta name="twitter:description" content="' . esc_attr(amt_process_paged($generic_description)) . '" />';
// Image
// Use a user defined image via filter. Otherwise use default image.
// First filter using a term/taxonomy agnostic filter name.
$posttype_image_url = apply_filters('amt_posttype_force_image_url', '', $post_type_object);
if (empty($posttype_image_url)) {
// Second filter (post type dependent).
// Construct the filter name. Template: ``amt_posttype_image_url_POSTTYPESLUG``
$posttype_image_url_filter_name = sprintf('amt_posttype_image_url_%s', $post_type_object->name);
//var_dump($posttype_image_url_filter_name);
// The default image, if set, is used by default.
$posttype_image_url = apply_filters($posttype_image_url_filter_name, $options["default_image_url"]);
}
if (!empty($posttype_image_url)) {
$image_data = amt_get_image_data($posttype_image_url);
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_index', 'full');
$image_meta_tags = amt_get_twitter_cards_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
}
//$metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw( $posttype_image_url ) . '" />';
}
}
}
return $metadata_arr;
}
// Further check (required in some reported cases)
// Go no further if the content type does not validate is_singular().
if (!is_singular()) {
return array();
}
// Products
// A 'product' Twitter Card is generated. See: https://dev.twitter.com/cards/types/product
if (amt_is_product()) {
// Type
$metadata_arr[] = '<meta name="twitter:card" content="product" />';
// Author and Publisher
$metadata_arr = array_merge($metadata_arr, amt_get_twitter_cards_author_publisher_metatags($options, $post));
// Title
// Note: Contains multipage information
//$metadata_arr[] = '<meta name="twitter:title" content="' . esc_attr( amt_process_paged( strip_tags( get_the_title($post->ID) ) ) ) . '" />';
$metadata_arr['twitter:title'] = '<meta name="twitter:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// Description - We use the description defined by Add-Meta-Tags
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr[] = '<meta name="twitter:description" content="' . esc_attr(amt_process_paged($content_desc)) . '" />';
}
// Image
// Use the featured image or the default image as a fallback.
// Set to true if image meta tags have been added to the card, so that it does not
// search for any more images.
$image_metatags_added = false;
// First check if a global image override URL has been entered.
// If yes, use this image URL and override all other images.
$image_data = amt_get_image_data(amt_get_post_meta_image_url($post->ID));
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_product', 'full');
$image_meta_tags = amt_get_twitter_cards_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
//$global_image_override_url = amt_get_post_meta_image_url($post->ID);
//if ( $image_metatags_added === false && ! empty( $global_image_override_url ) ) {
// $metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw( $global_image_override_url ) . '" />';
// Images have been found.
$image_metatags_added = true;
}
// Set the image size to use
$image_size = apply_filters('amt_image_size_product', 'full');
// If the content has a featured image, then we use it.
if ($image_metatags_added === false && function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
$main_size_meta = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), $image_size);
$metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw($main_size_meta[0]) . '" />';
if (apply_filters('amt_extended_image_tags', true)) {
$metadata_arr[] = '<meta name="twitter:image:width" content="' . esc_attr($main_size_meta[1]) . '" />';
$metadata_arr[] = '<meta name="twitter:image:height" content="' . esc_attr($main_size_meta[2]) . '" />';
}
// Images have been found.
$image_metatags_added = true;
}
// If an image is still missing, then use the default image (if set).
if ($image_metatags_added === false) {
$image_data = amt_get_default_image_data();
if (!empty($image_data)) {
//$image_size = apply_filters( 'amt_image_size_index', 'full' );
$image_meta_tags = amt_get_twitter_cards_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
}
//$metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw( $options["default_image_url"] ) . '" />';
}
//
// The Product Twitter Card needs to be extended with the following required
// in order to be valid: label1, data1, label2, data2
//
// For instance:
//<meta name="twitter:label1" content="Genre">
//<meta name="twitter:data1" content="Classic Rock">
//<meta name="twitter:label2" content="Location">
//<meta name="twitter:data2" content="National">
//
// The following filter is provided.
// Filtering of the generated Twitter Cards metadata. $post is also passed.
$metadata_arr = apply_filters('amt_product_data_twitter_cards', $metadata_arr, $post);
// Attachments
} elseif (is_attachment()) {
$mime_type = get_post_mime_type($post->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
// Images
if ('image' == $attachment_type) {
// $post is an image attachment
// Image attachments
//$image_meta = wp_get_attachment_metadata( $post->ID ); // contains info about all sizes
// We use wp_get_attachment_image_src() since it constructs the URLs
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_attachment', 'full');
$main_size_meta = wp_get_attachment_image_src($post->ID, $image_size);
// Type
$metadata_arr[] = '<meta name="twitter:card" content="photo" />';
// Author and Publisher
$metadata_arr = array_merge($metadata_arr, amt_get_twitter_cards_author_publisher_metatags($options, $post));
// Title
$metadata_arr['twitter:title'] = '<meta name="twitter:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// Description - We use the description defined by Add-Meta-Tags
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr[] = '<meta name="twitter:description" content="' . esc_attr($content_desc) . '" />';
}
// Image
$metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw($main_size_meta[0]) . '" />';
if (apply_filters('amt_extended_image_tags', true)) {
$metadata_arr[] = '<meta name="twitter:image:width" content="' . esc_attr($main_size_meta[1]) . '" />';
$metadata_arr[] = '<meta name="twitter:image:height" content="' . esc_attr($main_size_meta[2]) . '" />';
}
// Audio & Video
} elseif ($options["tc_enable_player_card_local"] == "1" && in_array($attachment_type, array('video', 'audio'))) {
// Create player card for local video and audio attachments.
// $post is an audio or video attachment
// Type
$metadata_arr[] = '<meta name="twitter:card" content="player" />';
// Author and Publisher
$metadata_arr = array_merge($metadata_arr, amt_get_twitter_cards_author_publisher_metatags($options, $post));
// Title
$metadata_arr['twitter:title'] = '<meta name="twitter:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// Description - We use the description defined by Add-Meta-Tags
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr[] = '<meta name="twitter:description" content="' . esc_attr($content_desc) . '" />';
}
// twitter:player
$metadata_arr[] = sprintf('<meta name="twitter:player" content="%s" />', esc_url_raw(amt_make_https(amt_embed_get_container_url($post->ID))));
// Player size
if ('video' == $attachment_type) {
// Player size (this should be considered irrelevant of the video size)
$player_size = apply_filters('amt_twitter_cards_video_player_size', array(640, 480));
} elseif ('audio' == $attachment_type) {
$player_size = apply_filters('amt_twitter_cards_audio_player_size', array(320, 30));
}
// twitter:player:width
$metadata_arr[] = sprintf('<meta name="twitter:player:width" content="%d" />', esc_attr($player_size[0]));
// twitter:player:height
$metadata_arr[] = sprintf('<meta name="twitter:player:height" content="%d" />', esc_attr($player_size[1]));
// twitter:image
$preview_image_url = amt_embed_get_preview_image($post->ID);
if (!empty($preview_image_url)) {
$metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw(amt_make_https($preview_image_url)) . '" />';
}
// twitter:player:stream
$metadata_arr[] = '<meta name="twitter:player:stream" content="' . esc_url_raw(amt_make_https(amt_embed_get_stream_url($post->ID))) . '" />';
// twitter:player:stream:content_type
$metadata_arr[] = '<meta name="twitter:player:stream:content_type" content="' . esc_attr($mime_type) . '" />';
//$metadata_arr[] = '<meta name="twitter:player:stream:content_type" content="video/mp4; codecs="avc1.42E01E1, mp4a.40.2"">';
}
// Content
// - standard format (post_format === false), aside, link, quote, status, chat (create summary card or summary_large_image if enforced)
// - photo format (creates (summary_large_image card)
} elseif (get_post_format($post->ID) === false || in_array(get_post_format($post->ID), array('image', 'aside', 'link', 'quote', 'status', 'chat'))) {
// Render a summary card if standard format (or summary_large_image if enforced).
// Render a summary_large_image card if image format.
// Type
if (get_post_format($post->ID) === false || in_array(get_post_format($post->ID), array('aside', 'link', 'quote', 'status', 'chat'))) {
$metadata_arr[] = '<meta name="twitter:card" content="' . amt_get_default_twitter_card_type($options) . '" />';
// Set the image size to use
$image_size = apply_filters('amt_image_size_content', 'full');
} elseif (get_post_format($post->ID) == 'image') {
$metadata_arr[] = '<meta name="twitter:card" content="summary_large_image" />';
// Set the image size to use
// Since we need a bigger image, here we filter the image size through 'amt_image_size_attachment',
// which typically returns a size bigger than 'amt_image_size_content'.
$image_size = apply_filters('amt_image_size_attachment', 'full');
}
// Author and Publisher
$metadata_arr = array_merge($metadata_arr, amt_get_twitter_cards_author_publisher_metatags($options, $post));
// Title
// Note: Contains multipage information
$metadata_arr['twitter:title'] = '<meta name="twitter:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// Description - We use the description defined by Add-Meta-Tags
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr[] = '<meta name="twitter:description" content="' . esc_attr(amt_process_paged($content_desc)) . '" />';
}
// Image
// Use the FIRST image ONLY
// Set to true if image meta tags have been added to the card, so that it does not
// search for any more images.
$image_metatags_added = false;
// First check if a global image override URL has been entered.
// If yes, use this image URL and override all other images.
$image_data = amt_get_image_data(amt_get_post_meta_image_url($post->ID));
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_content', 'full');
$image_meta_tags = amt_get_twitter_cards_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
//$global_image_override_url = amt_get_post_meta_image_url($post->ID);
//if ( $image_metatags_added === false && ! empty( $global_image_override_url ) ) {
// $metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw( $global_image_override_url ) . '" />';
// Images have been found.
$image_metatags_added = true;
}
// If the content has a featured image, then we use it.
if ($image_metatags_added === false && function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
$main_size_meta = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), $image_size);
$metadata_arr[] = '<meta name="twitter:image:src" content="' . esc_url_raw($main_size_meta[0]) . '" />';
if (apply_filters('amt_extended_image_tags', true)) {
$metadata_arr[] = '<meta name="twitter:image:width" content="' . esc_attr($main_size_meta[1]) . '" />';
$metadata_arr[] = '<meta name="twitter:image:height" content="' . esc_attr($main_size_meta[2]) . '" />';
}
// Images have been found.
$image_metatags_added = true;
}
// If a featured image is not set for this content, try to find the first image
if ($image_metatags_added === false) {
// Process all attachments and add metatags for the first image.
foreach ($attachments as $attachment) {
$mime_type = get_post_mime_type($attachment->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
if ('image' == $attachment_type) {
// Image tags
$main_size_meta = wp_get_attachment_image_src($attachment->ID, $image_size);
$metadata_arr[] = '<meta name="twitter:image:src" content="' . esc_url_raw($main_size_meta[0]) . '" />';
if (apply_filters('amt_extended_image_tags', true)) {
$metadata_arr[] = '<meta name="twitter:image:width" content="' . esc_attr($main_size_meta[1]) . '" />';
$metadata_arr[] = '<meta name="twitter:image:height" content="' . esc_attr($main_size_meta[2]) . '" />';
}
// Images have been found.
$image_metatags_added = true;
// If an image is added, break.
break;
}
}
}
// If a local image-attachment is not set, try to find any embedded images
if ($image_metatags_added === false) {
// Embedded Media
foreach ($embedded_media['images'] as $embedded_item) {
if (get_post_format($post->ID) === false || in_array(get_post_format($post->ID), array('aside', 'link', 'quote', 'status', 'chat'))) {
$metadata_arr[] = '<meta name="twitter:image:src" content="' . esc_url_raw($embedded_item['thumbnail']) . '" />';
if (apply_filters('amt_extended_image_tags', true)) {
$metadata_arr[] = '<meta name="twitter:image:width" content="150" />';
$metadata_arr[] = '<meta name="twitter:image:height" content="150" />';
}
} elseif (get_post_format($post->ID) == 'image') {
$metadata_arr[] = '<meta name="twitter:image:src" content="' . esc_url_raw($embedded_item['image']) . '" />';
if (apply_filters('amt_extended_image_tags', true)) {
$metadata_arr[] = '<meta name="twitter:image:width" content="' . esc_attr($embedded_item['width']) . '" />';
$metadata_arr[] = '<meta name="twitter:image:height" content="' . esc_attr($embedded_item['height']) . '" />';
}
}
// Images have been found.
$image_metatags_added = true;
// If an image is added, break.
break;
}
}
// If an image is still missing, then use the default image (if set).
if ($image_metatags_added === false) {
$image_data = amt_get_default_image_data();
if (!empty($image_data)) {
// Image size already set
//$image_size = apply_filters( 'amt_image_size_index', 'full' );
$image_meta_tags = amt_get_twitter_cards_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
}
//$metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw( $options["default_image_url"] ) . '" />';
}
// Content
// - gallery format (creates gallery card)
} elseif (get_post_format($post->ID) == 'gallery') {
// Render a gallery card if gallery format.
// Type
$metadata_arr[] = '<meta name="twitter:card" content="gallery" />';
// Author and Publisher
$metadata_arr = array_merge($metadata_arr, amt_get_twitter_cards_author_publisher_metatags($options, $post));
// Title
// Note: Contains multipage information
$metadata_arr['twitter:title'] = '<meta name="twitter:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// Description - We use the description defined by Add-Meta-Tags
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr[] = '<meta name="twitter:description" content="' . esc_attr(amt_process_paged($content_desc)) . '" />';
}
// Image
// Set to true if image meta tags have been added to the card, so that it does not
// search for any more images.
$image_metatags_added = false;
// First check if a global image override URL has been entered.
// If yes, use this image URL and override all other images.
$image_data = amt_get_image_data(amt_get_post_meta_image_url($post->ID));
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_content', 'full');
$image_meta_tags = amt_get_twitter_cards_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
//$global_image_override_url = amt_get_post_meta_image_url($post->ID);
//if ( $image_metatags_added === false && ! empty( $global_image_override_url ) ) {
// Note 'image0'
// $metadata_arr[] = '<meta name="twitter:image0" content="' . esc_url_raw( $global_image_override_url ) . '" />';
// Images have been found.
$image_metatags_added = true;
}
// Build the gallery
if ($image_metatags_added === false) {
// Image counter
$k = 0;
// Process all attachments and add metatags for the first image
foreach ($attachments as $attachment) {
$mime_type = get_post_mime_type($attachment->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
if ('image' == $attachment_type) {
// Image tags
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_content', 'full');
$main_size_meta = wp_get_attachment_image_src($attachment->ID, $image_size);
$metadata_arr[] = '<meta name="twitter:image' . $k . '" content="' . esc_url_raw($main_size_meta[0]) . '" />';
// Increment the counter
$k++;
}
}
// Embedded Media
foreach ($embedded_media['images'] as $embedded_item) {
$metadata_arr[] = '<meta name="twitter:image' . $k . '" content="' . esc_url_raw($embedded_item['image']) . '" />';
// Increment the counter
$k++;
}
}
// Content
// - video/audio format (creates player card)
// Note: The ``tc_enable_player_card_local`` option is checked after this initial check,
// because 'player' twitter cards are always generated for embedded audio and video.
} elseif (get_post_format($post->ID) == 'video' || get_post_format($post->ID) == 'audio') {
$post_format = get_post_format($post->ID);
$audio_video_metatags_complete = false;
// Process local media only if it is allowed by the user.
if ($audio_video_metatags_complete === false && $options["tc_enable_player_card_local"] == "1") {
// Local media - Process all attachments and add metatags for the first video
foreach ($attachments as $attachment) {
$mime_type = get_post_mime_type($attachment->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
// Get attachment metadata from WordPress
$attachment_metadata = wp_get_attachment_metadata($attachment->ID);
// We create player cards for video and audio attachments.
// The post might have attachments of other types.
if (!in_array($attachment_type, array('video', 'audio'))) {
continue;
} elseif ($attachment_type != $post_format) {
continue;
}
// Render a player card for the first attached audio or video.
// twitter:card
$metadata_arr[] = '<meta name="twitter:card" content="player" />';
// Author and Publisher
$metadata_arr = array_merge($metadata_arr, amt_get_twitter_cards_author_publisher_metatags($options, $post));
// twitter:title
// Title - Note: Contains multipage information
$metadata_arr['twitter:title'] = '<meta name="twitter:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// twitter:description
// Description - We use the description defined by Add-Meta-Tags
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr[] = '<meta name="twitter:description" content="' . esc_attr(amt_process_paged($content_desc)) . '" />';
}
// twitter:player
$metadata_arr[] = sprintf('<meta name="twitter:player" content="%s" />', esc_url_raw(amt_make_https(amt_embed_get_container_url($attachment->ID))));
// Player size
if ($post_format == 'video') {
// Player size (this should be considered irrelevant of the video size)
$player_size = apply_filters('amt_twitter_cards_video_player_size', array(640, 480));
} elseif ($post_format == 'audio') {
$player_size = apply_filters('amt_twitter_cards_audio_player_size', array(320, 30));
}
// twitter:player:width
$metadata_arr[] = sprintf('<meta name="twitter:player:width" content="%d" />', esc_attr($player_size[0]));
// twitter:player:height
$metadata_arr[] = sprintf('<meta name="twitter:player:height" content="%d" />', esc_attr($player_size[1]));
// twitter:player:stream
$metadata_arr[] = '<meta name="twitter:player:stream" content="' . esc_url_raw(amt_make_https(amt_embed_get_stream_url($attachment->ID))) . '" />';
// twitter:player:stream:content_type
$metadata_arr[] = '<meta name="twitter:player:stream:content_type" content="' . esc_attr($mime_type) . '" />';
//$metadata_arr[] = '<meta name="twitter:player:stream:content_type" content="video/mp4; codecs="avc1.42E01E1, mp4a.40.2"">';
// twitter:image
// First check if a global image override URL has been set in the post's metabox.
// If yes, use this image URL and override all other images.
$image_data = amt_get_image_data(amt_get_post_meta_image_url($post->ID));
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_content', 'full');
$image_meta_tags = amt_get_twitter_cards_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
//$global_image_override_url = amt_get_post_meta_image_url($post->ID);
//if ( ! empty( $global_image_override_url ) ) {
// $metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw( $global_image_override_url ) . '" />';
// Else use the featured image if it exists
} elseif (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
// Set the image size to use
$image_size = apply_filters('amt_image_size_content', 'full');
$main_size_meta = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), $image_size);
$metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw($main_size_meta[0]) . '" />';
//if ( apply_filters( 'amt_extended_image_tags', true ) ) {
// $metadata_arr[] = '<meta name="twitter:image:width" content="' . esc_attr( $main_size_meta[1] ) . '" />';
// $metadata_arr[] = '<meta name="twitter:image:height" content="' . esc_attr( $main_size_meta[2] ) . '" />';
//}
// Else use the attachment's featured image, if set.
} else {
// Else use the attachment's featured image, if set.
$image_data = amt_embed_get_preview_image($attachment->ID);
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_content', 'full');
$image_meta_tags = amt_get_twitter_cards_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
}
//$preview_image_url = amt_embed_get_preview_image( $attachment->ID );
//if ( ! empty( $preview_image_url ) ) {
// $metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw( amt_make_https( $preview_image_url ) ) . '" />';
//}
}
$audio_video_metatags_complete = true;
break;
}
}
// Process embedded media only if a twitter player card has not been generated.
if ($audio_video_metatags_complete === false) {
// Determine the relevant array (videos or sounds)
if ($post_format == 'video') {
$embedded_items = $embedded_media['videos'];
} elseif ($post_format == 'audio') {
$embedded_items = $embedded_media['sounds'];
}
// Embedded Media
foreach ($embedded_items as $embedded_item) {
// Render a player card for the first embedded video.
// twitter:card
$metadata_arr[] = '<meta name="twitter:card" content="player" />';
// Author and Publisher
$metadata_arr = array_merge($metadata_arr, amt_get_twitter_cards_author_publisher_metatags($options, $post));
// twitter:title
// Title - Note: Contains multipage information
$metadata_arr['twitter:title'] = '<meta name="twitter:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// twitter:description
// Description - We use the description defined by Add-Meta-Tags
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr[] = '<meta name="twitter:description" content="' . esc_attr(amt_process_paged($content_desc)) . '" />';
}
// twitter:player
$metadata_arr[] = '<meta name="twitter:player" content="' . esc_url_raw($embedded_item['player']) . '" />';
// Player size
// Alt Method: Size uses $content_width
//global $content_width;
//$width = $content_width;
//$height = absint(absint($content_width)*3/4);
//$metadata_arr[] = '<meta name="twitter:width" content="' . esc_attr( $width ) . '" />';
//$metadata_arr[] = '<meta name="twitter:height" content="' . esc_attr( $height ) . '" />';
// twitter:player:width
$metadata_arr[] = sprintf('<meta name="twitter:player:width" content="%d" />', esc_attr($embedded_item['width']));
// twitter:player:height
$metadata_arr[] = sprintf('<meta name="twitter:player:height" content="%d" />', esc_attr($embedded_item['height']));
// twitter:image
// First check if a global image override URL has been set in the post's metabox.
// If yes, use this image URL and override all other images.
$image_data = amt_get_image_data(amt_get_post_meta_image_url($post->ID));
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_content', 'full');
$image_meta_tags = amt_get_twitter_cards_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
//$global_image_override_url = amt_get_post_meta_image_url($post->ID);
//if ( ! empty( $global_image_override_url ) ) {
// $metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw( $global_image_override_url ) . '" />';
// Else use the featured image if it exists
} elseif (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
// Set the image size to use
$image_size = apply_filters('amt_image_size_content', 'full');
$main_size_meta = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), $image_size);
$metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw($main_size_meta[0]) . '" />';
//if ( apply_filters( 'amt_extended_image_tags', true ) ) {
// $metadata_arr[] = '<meta name="twitter:image:width" content="' . esc_attr( $main_size_meta[1] ) . '" />';
// $metadata_arr[] = '<meta name="twitter:image:height" content="' . esc_attr( $main_size_meta[2] ) . '" />';
//}
// Else use the attachment's featured image, if set.
} else {
$image_data = amt_get_image_data($embedded_item['thumbnail']);
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_content', 'full');
$image_meta_tags = amt_get_twitter_cards_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
}
}
// Else use the discovered preview image, if any.
//} elseif ( ! empty( $embedded_item['thumbnail'] ) ) {
// $metadata_arr[] = '<meta name="twitter:image" content="' . esc_url_raw( $embedded_item['thumbnail'] ) . '" />';
//}
//
$audio_video_metatags_complete = true;
break;
}
}
}
// Filtering of the generated Twitter Card metadata
$metadata_arr = apply_filters('amt_twitter_cards_metadata_head', $metadata_arr);
return $metadata_arr;
}
function amt_embed_template_redirect()
{
if (is_amtembed()) {
// The container page with the embedded audio/video has been requested.
if (!is_ssl() && apply_filters('amt_embed_enforce_ssl', true)) {
// Here we explicitly want an HTTPS URL and that's why `amt_make_https()` is used instead of `amt_embed_make_https()`.
$location = amt_make_https(amt_embed_get_container_url(amt_embed_get_id()));
//$location = 'https://' . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'];
wp_redirect($location, 301);
exit;
} else {
// Make it compatible with WooCommerce
// It has been brought to my attention that WooCommerce has an option that forces
// a redirection from the HTTPS version of the page back to the HTTP version.
// This happens only if the `woocommerce_unforce_ssl_checkout` option is checked.
// Fortunatelly the WooCommerce developers have added a filter for easy resolution
// of any issues. See the `class-wc-https.php` of the WooCommerce plugin.
add_filter('woocommerce_unforce_ssl_checkout', 'amt_return_false');
}
}
}