header_meta_twitter

<?php
/**
 * @author : Jegtheme
 */

class JNews_Meta_Twitter extends JNews_Meta_Abstract {


    public function get_post_title() {
        $title = vp_metabox( 'jnews_social_meta.twitter_title', null, $this->post_id );

        if ( ! $title ) {
            $title = get_the_title();
        }

        return wp_strip_all_tags( $title );
    }

    public function get_post_description() {
        $description = vp_metabox( 'jnews_social_meta.twitter_description', null, $this->post_id );

        if ( ! $description ) {
            $description = $this->get_excerpt();
        }

        return wp_strip_all_tags( $description );
    }

    public function get_post_image() {
        $attachment_id = vp_metabox( 'jnews_social_meta.twitter_image', null, $this->post_id );

        if ( ! $attachment_id ) {
            $attachment_id = get_post_thumbnail_id( $this->post_id );
        }

        return $attachment_id ? wp_get_attachment_image_src( $attachment_id, 'full' ) : null;
    }

    public function get_post_author() {
        $post     = get_post( $this->post_id );
        $name     = get_the_author_meta( 'display_name', $post->post_author );
        $profiles = get_the_author_meta( 'url', $post->post_author );

        if ( get_the_author_meta( 'twitter', $post->post_author ) ) {
            $profiles = get_the_author_meta( 'twitter', $post->post_author );
        }

        return array(
            'display_name' => $name,
            'profiles'     => $profiles,
        );
    }

    public function get_site_twitter_profile() {
        $social_icon = get_theme_mod(
            'jnews_social_icon',
            array(
                array(
                    'social_icon' => 'facebook',
                    'social_url'  => 'http://facebook.com',
                ),
                array(
                    'social_icon' => 'twitter',
                    'social_url'  => 'http://twitter.com',
                ),
            )
        );

        foreach ( $social_icon as $social ) {
            if ( $social['social_icon'] === 'twitter' ) {
                return $social['social_url'];
            }
        }
    }

    public function render_post_meta() {
        $meta   = array();
        $author = $this->get_post_author();

        $meta[] = array(
            'name'    => 'twitter:card',
            'content' => 'summary_large_image',
        );

        $meta[] = array(
            'name'    => 'twitter:title',
            'content' => $this->get_post_title(),
        );

        $meta[] = array(
            'name'    => 'twitter:description',
            'content' => $this->get_post_description(),
        );

        $meta[] = array(
            'name'    => 'twitter:url',
            'content' => $this->get_post_url(),
        );

        $meta[] = array(
            'name'    => 'twitter:site',
            'content' => $author['profiles'],
        );

        // set image
        $image = $this->get_post_image();

        if ( $image ) {
            $meta[] = array(
                'name'    => 'twitter:image',
                'content' => $image[0],
            );

            $meta[] = array(
                'name'    => 'twitter:image:width',
                'content' => $image[1],
            );

            $meta[] = array(
                'name'    => 'twitter:image:height',
                'content' => $image[2],
            );
        }

        $meta_html = $this->generate_meta( $meta );
        $this->print_meta( $meta_html );
    }


    public function render_site_meta() {
        $meta = array();

        $meta[] = array(
            'name'    => 'twitter:card',
            'content' => 'summary',
        );

        $meta[] = array(
            'name'    => 'twitter:url',
            'content' => $this->get_post_url(),
        );

        $title = $this->get_post_title();
        if ( $title ) {
            $meta[] = array(
                'name'    => 'twitter:title',
                'content' => $this->get_post_title(),
            );
        } else {
            $meta[] = array(
                'name'    => 'twitter:title',
                'content' => $this->get_site_title(),
            );
        }

        $description = $this->get_post_description();
        if ( $description ) {
            $meta[] = array(
                'name'    => 'twitter:description',
                'content' => $this->get_post_description(),
            );
        } else {
            $meta[] = array(
                'name'    => 'twitter:description',
                'content' => $this->get_site_description(),
            );
        }

        $image = $this->get_post_image();
        if ( $image ) {
            $meta[] = array(
                'name'    => 'twitter:image',
                'content' => $image[0],
            );

            $meta[] = array(
                'name'    => 'twitter:image:width',
                'content' => $image[1],
            );

            $meta[] = array(
                'name'    => 'twitter:image:height',
                'content' => $image[2],
            );
        }

        $twitter_profile = $this->get_site_twitter_profile();

        if ( $twitter_profile ) {
            $meta[] = array(
                'name'    => 'twitter:site',
                'content' => $this->get_site_twitter_profile(),
            );
        }

        $meta_html = $this->generate_meta( $meta );
        $this->print_meta( $meta_html );
    }


}