add_action( 'init', 'pz_child_page_featured_image' );

function pz_child_page_featured_image() {
    add_action( 'pizzaro_page', 'pizzaro_page_header',    10 );
}

if ( ! function_exists( 'pizzaro_page_header' ) ) {
    /**
     * Display the post header with a link to the single post
     *
     * @since 1.0.0
     */
    function pizzaro_page_header() {
        global $post;
        $page_meta_values = get_post_meta( $post->ID, '_pizzaro_page_metabox', true );

        if ( isset( $page_meta_values['page_title'] ) && ! empty( $page_meta_values['page_title'] ) ) {
            $page_title = $page_meta_values['page_title'];
        } else {
            $page_title = get_the_title();
        }

        if( apply_filters( 'pizzaro_show_page_header', true ) ) {


            $header_image_url = pizzaro_get_page_header_image();
            if( $header_image_url != '' ) {
                ?>
                <header class="entry-header header-with-cover-image stretch-full-width" style="background-image: url(<?php echo esc_url( $header_image_url ) ?>);">
                    <div class="caption">
                        <h1 class="entry-title"><?php echo apply_filters( 'pizzaro_page_title', wp_kses_post( $page_title ) ); ?></h1>
                        <?php pizzaro_page_subtitle(); ?>
                    </div>
                </header>
                <?php
            } else {
                ?>
                <header class="entry-header">
                    <h1 class="entry-title"><?php echo apply_filters( 'pizzaro_page_title', wp_kses_post( $page_title ) ); ?></h1>
                    <?php pizzaro_page_subtitle(); ?>
                </header>
                <?php
            }
        }
    }
}

if( ! function_exists( 'pizzaro_get_page_header_image' ) ) {

    function pizzaro_get_page_header_image() {
        global $post;

        $image_url = apply_filters( 'pizzaro_default_page_header_image', '' );

        if( ! is_front_page() ) {

            $image_width = apply_filters( 'pizzaro_page_header_image_width', 1170 );

            if( $post ){
                $image_id = get_post_thumbnail_id( $post->ID );
                $image = wp_get_attachment_image_src( $image_id, array( $image_width, $image_width ) );
                if ( is_page() && has_post_thumbnail( $post->ID ) && $image[1] >= $image_width ) {
                    $image_url = $image[0];
                }
            }
        }
        return $image_url;
    }
}