| Current File : /home/kelaby89/muzza.fit/wp-content/plugins/wolf-videos/inc/admin/class-wv-video-thumbnail.php |
<?php
/**
* Videos Video thumbnail generator
*
* Supports vimeo and youtube
*
* @package WordPress
* @subpackage %NAME %
* @since %NAME % 1.0.0
*/
defined( 'ABSPATH' ) || exit;
debug( class_exists( 'Wolf_Videos_Thumbnail_Generator' ) );
if ( ! class_exists( 'Wolf_Videos_Thumbnail_Generator' ) ) {
/**
* Wolf_Videos_Thumbnail_Generator class
*
* Helper class to generate thumbnail from youtube and vimeo videos
*
*/
class Wolf_Videos_Thumbnail_Generator {
/**
* Wolf_Videos_Thumbnail_Generator Constructor.
*
*/
public function __construct() {
// Init.
add_action( 'admin_init', array( $this, 'add_metabox' ) );
// Inline CSS.
add_action( 'admin_head', array( $this, 'add_inline_styles' ) );
// AJAX callback.
add_action( 'wp_ajax_video_thumbnail', array( $this, 'video_thumbnail_callback' ) );
add_action( 'wp_ajax_video_thumbnail_delete', array( $this, 'video_thumbnail_delete_callback' ) );
add_action( 'wp_ajax_wolf_thumbnail_delete', array( $this, 'thumbnail_delete_callback' ) );
// AJAX Searching.
if ( in_array( basename( $_SERVER['PHP_SELF'] ), apply_filters( 'video_thumbnail_editor_pages', array( 'post-new.php', 'page-new.php', 'post.php', 'page.php' ) ) ) ) {
add_action( 'admin_head', array( $this, 'video_thumbnail_script' ) );
}
}
/**
* Get all post types
*
* @return array
*/
public function get_post_types() {
return array( 'video' );
}
/**
* Add inline style
*
* We don't add a whole stylsheet file for only one rule
*/
public function add_inline_styles() {
?>
<style type="text/css">
#video-thumbnail-preview img{
max-width: 100%;
}
#video-thumbnail-delete {
display: inline-block;
border-left: 1px dotted #ccc;
margin-left: 5px;
padding-left: 6px;
}
</style>
<?php
}
/**
* Get Vimeo Info
*
* @param int $id
* @param string $info
* @return array
*/
public function get_vimeo_info( $id, $info = 'thumbnail_large' ) {
if ( ! $id ) {
return;
}
$videoinfo_url = "http://vimeo.com/api/v2/video/$id.php";
$response = wp_remote_get( $videoinfo_url , array( 'timeout' => 10 ) );
if ( is_array( $response ) ) {
$body = $response['body']; // use the content.
$output = unserialize( $body );
$output = $output[0][ $info ];
} else {
$output = sprintf(
wp_kses( __(
'Error retrieving video information from the URL <a href="%1$s">%1$s</a>. If opening that URL in your web browser returns anything else than an error page, the problem may be related to your web server and might be something your host administrator can solve.',
'wolf-videos'
),
array( 'a' => array( 'href' => array() ) )
)
);
}
return $output;
}
/**
* Get the first video URL in the post
*
* @param int $post_id
* @return string/bool
*/
public function get_video_url( $post_id ) {
if ( ! $post_id ) $post_id = get_the_ID();
$content = get_post_field( 'post_content', $post_id );
$has_video_url = preg_match( '#youtube(?:\-nocookie)?\.com/watch\?v=([A-Za-z0-9\-_]+)#', $content, $match )
|| preg_match( '#youtube(?:\-nocookie)?\.com/v/([A-Za-z0-9\-_]+)#', $content, $match )
|| preg_match( '#youtube(?:\-nocookie)?\.com/embed/([A-Za-z0-9\-_]+)#', $content, $match )
|| preg_match( '#youtu.be/([A-Za-z0-9\-_]+)#', $content, $match )
|| preg_match( '#vimeo\.com/([0-9]+)#', $content, $match )
|| preg_match( '#player.vimeo.com/video/([0-9]+)#', $content, $match );
$video_url = ( $has_video_url ) ? esc_url( $match[0] ) : null;
return $video_url;
}
/**
* Retrieve thumbnail from Vimeo
*
* @param int $post_id
* @return string
*/
public function get_vimeo_thumbnail( $post_id ) {
$url = $this->get_video_url( $post_id );
$vimeo_thumbnail = null;
if ( $url ) {
if ( preg_match( '#player\.vimeo\.com/video/([0-9]+)#', $url, $match ) ) {
$url = str_replace( 'player.vimeo.com/video', 'vimeo.com', $url );
}
if (
preg_match( '#vimeo\.com/([A-Za-z0-9\-_]+)#', $url, $match )
) {
if ( $match && isset( $match[1] ) ) {
$vimeo_thumbnail = $this->get_vimeo_info( $match[1], $info = 'thumbnail_large' );
}
}
}
return $vimeo_thumbnail;
}
/**
* Retrieve thumbnail from Youtube
*
* @param int $post_id
* @return string
*/
public function get_youtube_thumbnail( $post_id ) {
$url = $this->get_video_url( $post_id );
$youtube_thumbnail = null;
if ( $url ) {
if (
preg_match( '#youtube(?:\-nocookie)?\.com/watch\?v=([A-Za-z0-9\-_]+)#', $url, $match )
|| preg_match( '#youtube(?:\-nocookie)?\.com/v/([A-Za-z0-9\-_]+)#', $url, $match )
|| preg_match( '#youtube(?:\-nocookie)?\.com/embed/([A-Za-z0-9\-_]+)#', $url, $match )
|| preg_match( '#youtu.be/([A-Za-z0-9\-_]+)#', $url, $match )
) {
if ( $match && isset( $match[1] ) ) {
$youtube_id = $match[1];
$youtube_thumbnail = 'http://img.youtube.com/vi/' . $youtube_id . '/0.jpg';
$image_qualities = array( 'maxresdefault', 'sddefault', '0' );
// Get the best quality available
foreach ( $image_qualities as $image_quality ) {
if ( @getimagesize( ( 'http://i.ytimg.com/vi/'. $youtube_id. '/'.$image_quality.'.jpg' ) ) ) {
$youtube_thumbnail = "http://i.ytimg.com/vi/$youtube_id/$image_quality.jpg";
//debug($image_quality);
return $youtube_thumbnail;
break; //exiting
}
}
}
}
}
return $youtube_thumbnail;
}
/**
* Get video thumbnail from vimeo or youtube
*
* @param int $post_id
* @return string
*/
public function get_video_thumbnail( $post_id ) {
$thumbnail = null;
// if vimeo
if ( $this->get_vimeo_thumbnail( $post_id ) ) {
$thumbnail = $this->get_vimeo_thumbnail( $post_id );
} elseif ( $this->get_youtube_thumbnail( $post_id ) ) {
$thumbnail = $this->get_youtube_thumbnail( $post_id );
}
return $thumbnail;
}
/**
* Set the video thumbnail as featured image
*
* @param int $post_id
* @return string
*/
public function set_video_thumbnail( $post_id = null ) {
$new_thumbnail = null;
$thumbnail_url = null;
$attachment_id = null;
// Get the post ID if none is provided
if ( ! $post_id ) $post_id = get_the_ID();
// check if the thumbnail has already been generated and saved in a post meta
$meta = get_post_meta( $post_id, '_video_thumbnail', true );
// get video thumbnail
$new_thumbnail = $this->get_video_thumbnail( $post_id );
// if we got something from youtube or vimeo
if ( $new_thumbnail ) {
// check if this thumbnail has already been attached to the post using meta
$args = array(
'post_type' => 'attachment',
'numberposts' => null,
'post_status' => null,
'post_parent' => $post_id,
);
$attachments = get_posts( $args );
if ( $attachments ) {
foreach ( $attachments as $attachment ) {
if ( get_post_meta( $attachment->ID, '_video_thumbnail_url', true ) == $new_thumbnail ) {
$attachment_id = $attachment->ID;
break;
}
}
}
// check if the retrieven thumbnail is different from the one saved in the post meta
if ( $meta != $new_thumbnail ) {
// Add hidden custom field with thumbnail origin URL
add_post_meta( $post_id, '_video_thumbnail', $new_thumbnail, true ) or
update_post_meta( $post_id, '_video_thumbnail', $new_thumbnail );
// if not already attached, we upload it in the library
if ( ! $attachment_id ) {
// upload the image and attach it to the post
$file = media_sideload_image( $new_thumbnail , $post_id );
if ( $file && preg_match( '/<img.+src=[\'"]([^\'"]+)[\'"].*>/', $file , $match ) ) {
if ( isset( $match[1] ) ) {
$attachment_url = $match[1];
$attachment_id = $this->get_attachment_id_from_url( $post_id, $attachment_url );
}
}
}
// make sure we got an attachment generated
if ( $attachment_id ) {
// set origin URL post meta to the attachment to avoid to generate the image twice
add_post_meta( $attachment_id, '_video_thumbnail_url', $new_thumbnail, true ) or
update_post_meta( $attachment_id, '_video_thumbnail_url', $new_thumbnail );
// set featured image
add_post_meta( $post_id, '_thumbnail_id', $attachment_id, true ) or
update_post_meta( $post_id, '_thumbnail_id', $attachment_id );
}
// if the retrieven thumbnail is already saved as post meta
} elseif ( $meta == $new_thumbnail ) {
$new_thumbnail = $meta;
if ( $attachment_id && ! get_post_meta( $post_id, '_thumbnail_id', $attachment_id, true ) ) {
update_post_meta( $post_id, '_thumbnail_id', $attachment_id );
}
}
} // endif new_thumbnail
return $new_thumbnail;
}
/**
* Returns attachment id from attachment URL
*
* @param int $post_id
* @param string $attachment_url
* @return int
*/
public function get_attachment_id_from_url( $post_id = null, $attachment_url = null ) {
if ( $post_id && $attachment_url ) {
global $wpdb;
$post_table = $wpdb->prefix.'posts';
$query = $wpdb->prepare( "SELECT $post_table.ID FROM $post_table WHERE $post_table.guid= %s;", $attachment_url );
$attachment = $wpdb->get_col( $query );
return $attachment[0];
}
}
/**
* Echo thumbnail image tag
*
* @param int $post_id
* @return string
*/
public function video_thumbnail( $post_id = null ) {
if ( ( $video_thumbnail = $this->set_video_thumbnail( $post_id ) ) != null ) {
echo wp_kses( $video_thumbnail, array(
'img' => array(
'src' => array(),
'alt' => array(),
'class' => array(),
'id' => array(),
),
)
);
}
}
/**
* Add video thumbnail metabox
*
* @return void
*/
public function add_metabox() {
$post_types = $this->get_post_types();
if ( is_array( $post_types ) ) {
foreach ( $post_types as $type ) {
add_meta_box(
'video_thumbnail',
'Video Thumbnail',
array( $this, 'render_metabox' ),
$type,
'side',
'low'
);
}
}
}
/**
* Render metabox
*
* @return void
*/
public function render_metabox() {
global $post;
$post_id = $post->ID;
$custom = get_post_custom( $post_id );
debug( $custom );
if ( isset( $custom['_video_thumbnail'][0] ) ) {
$video_thumbnail = $custom['_video_thumbnail'][0];
} else {
$video_thumbnail = '';
}
if ( isset( $video_thumbnail ) && $video_thumbnail != '' ) {
echo "<p id='video-thumbnail-preview'><img src='$video_thumbnail'></p>";
}
if ( get_post_status() === 'publish' || get_post_status() === 'private' ) {
if ( isset( $video_thumbnail ) && $video_thumbnail !== '' ) {
echo '<p id="video-thumbnail-action">';
echo '<a href="#" id="video-thumbnail-reset" onClick="video_thumbnail_reset(\'' . $post_id . '\' );return false;">' . $this->get_text( 'reset' ) . '</a>';
echo '<a href="#" id="video-thumbnail-delete" onClick="video_thumbnail_delete(\'' . $post_id . '\' );return false;">' . $this->get_text( 'delete' ) . '</a>';
echo '</p>';
} elseif ( $this->get_video_url( $post_id ) ) {
echo '<p id="video-thumbnail-preview">';
echo sanitize_text_field( $this->get_text( 'has_video' ) );
echo '</p>';
echo '<p id="video-thumbnail-action">';
echo '<a href="#" id="video-thumbnail-reset" onClick="video_thumbnail_reset(\'' . $post_id . '\' );return false;">' . $this->get_text( 'generate' ) . '</a>';
echo '</a></p>';
} else {
echo sanitize_text_field( $this->get_text( 'no_video' ) );
}
} else {
if ( isset( $video_thumbnail ) && $video_thumbnail != '' ) {
echo '<p id="video-thumbnail-action">';
echo '<a href="#" id="video-thumbnail-reset" onClick="video_thumbnail_reset(\'' . $post_id . '\' );return false;">' . esc_html__( 'Reset', 'wolf-videos' ) . '</a>';
echo '<a href="#" id="video-thumbnail-delete" onClick="video_thumbnail_delete(\'' . $post_id . '\' );return false;">' . esc_html__( 'Delete', 'wolf-videos' ) . '</a>';
echo '</p>';
} else {
echo '<p>';
echo sanitize_text_field( $this->get_text( 'not_published' ) );
echo '</p>';
}
}
}
/**
* Add script functions in admin head
*
* @return string
*/
public function video_thumbnail_script() {
$ajax_nonce = wp_create_nonce( 'wolf-video-thumbnail' );
?>
<!-- Video Thumbnails Researching Ajax -->
<script type="text/javascript">
function video_thumbnail_reset( id ) {
var removeFeaturedImg = '<p id="video-custom-remove" class="hide-if-no-js"><a href="#" id="remove-post-thumbnail" onclick="wolf_thumbnail_delete( ' + id + ' );return false;"><?php esc_html_e( 'Remove featured image', 'wolf-videos' ); ?></a></p>';
var resetText = '<?php echo esc_js( $this->get_text( 'reset' ) ); ?>';
var deleteText = '<?php echo esc_js( $this->get_text( 'delete' ) ); ?>';
var deleteLink = "<a href='#' id='video-thumbnail-delete' onClick='video_thumbnail_delete( " + id + " );return false;'>" + deleteText + "</a>";
var data = {
action: 'video_thumbnail',
security: '<?php echo sanitize_text_field( $ajax_nonce ); ?>',
post_id: id
};
document.getElementById( 'video-thumbnail-preview' ).innerHTML= '<?php esc_html_e( 'Working...', 'wolf-videos' ); ?>... <img src="<?php echo admin_url( 'images/loading.gif' ); ?>"/>';
// since 2.8 ajaxurl is always defined in the admin header and points to admin-ajax.php
jQuery.post( ajaxurl, data, function( response ) {
document.getElementById( 'video-thumbnail-preview' ).innerHTML= response;
//jQuery( '#postimagediv .inside #set-post-thumbnail' ).empty().html( response );
jQuery( '#remove-post-thumbnail' ).remove();
jQuery( '#video-thumbnail-delete' ).remove();
//jQuery( '#postimagediv .inside' ).append( removeFeaturedImg );
jQuery( '#video-thumbnail-action' ).append( deleteLink );
jQuery( '#video-thumbnail-reset' ).empty().append( resetText );
} );
}
function video_thumbnail_delete( id ) {
var message = '<?php echo esc_js( $this->get_text( 'has_video' ) ); ?>';
var generateText = '<?php echo esc_js( $this->get_text( 'generate' ) ); ?>';
var deleteLink = "<a href='#' id='video-thumbnail-reset' onClick='video_thumbnail_reset( " + id + " );return false;'>" + generateText + "</a>";
var data = {
action: 'video_thumbnail_delete',
security: '<?php echo sanitize_text_field( $ajax_nonce ); ?>',
post_id: id
};
jQuery.post( ajaxurl, data, function( response ) {
// video-thumbnail-delete
jQuery( '#video-thumbnail-delete' ).remove();
jQuery( '#video-thumbnail-preview' ).empty().append( message );
jQuery( '#video-thumbnail-action' ).empty().append( deleteLink );
} );
}
function wolf_thumbnail_delete( id ) {
var data = {
action: 'wolf_thumbnail_delete',
security: '<?php echo sanitize_text_field( $ajax_nonce ); ?>',
post_id: id
};
jQuery.post( ajaxurl, data, function( response ) {
//jQuery( '#postimagediv .inside #set-post-thumbnail' ).empty().html( '<?php esc_html_e( 'Set featured image', 'wolf-videos' ); ?>' );
//jQuery( '#remove-post-thumbnail' ).remove();
} );
}
</script>
<?php
}
/**
* Delete thumbnail (AJAX)
*
* @return void
*/
public function video_thumbnail_delete_callback() {
check_ajax_referer( 'wolf-video-thumbnail', 'security' );
$post_id = $_POST['post_id'];
delete_post_meta( $post_id, '_video_thumbnail' );
exit();
}
/**
* Delete featured image (AJAX)
*
* @return void
*/
public function thumbnail_delete_callback() {
check_ajax_referer( 'wolf-video-thumbnail', 'security' );
$post_id = $_POST['post_id'];
delete_post_meta( $post_id, '_thumbnail_id' );
exit();
}
/**
* Set thumbnail (AJAX)
*
* @return void
*/
public function video_thumbnail_callback() {
check_ajax_referer( 'wolf-video-thumbnail', 'security' );
$post_id = $_POST['post_id'];
$video_thumbnail = $this->set_video_thumbnail( $post_id );
if ( is_wp_error( $video_thumbnail ) ) {
echo sanitize_text_field( $video_thumbnail->get_error_message() );
} else if ( $video_thumbnail != null ) {
echo '<img src="' . $video_thumbnail . '">';
} else {
echo sanitize_text_field( $this->get_text( 'has_video' ) );
}
exit();
}
/**
* Return translatable string
*
* @param string $string
* @return array
*/
public function get_text( $string ) {
// Translatable string
$text = array(
'no_video' => esc_html__( 'No video URL in the post.', 'wolf-videos' ),
'has_video' => esc_html__( 'A video has been attached to this post. Click on "Generate" to create a thumbnail from this video', 'wolf-videos' ),
'not_published' => esc_html__( 'You will be able to generate a video thumbnail and use it as featured image for this post when it is published.', 'wolf-videos' ),
'generate' => esc_html__( 'Generate', 'wolf-videos' ),
'reset' => esc_html__( 'Reset', 'wolf-videos' ),
'delete' => esc_html__( 'Delete', 'wolf-videos' ),
);
return $text[ $string ];
}
} // end class
return new Wolf_Videos_Thumbnail_Generator;
}