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<?php

/**
 * The template for displaying image attachments
 *
 * @package WordPress
 * @subpackage Twenty_Twenty_One
 * @since 1.0.0
 */

get_header();

// Start the loop.
while ( have_posts() ) {
  the_post();
  ?>
	<article id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
		<header class="entry-header alignwide">
			<?php the_title( '<h1 class="entry-title">', '</h1>' ); ?>
		</header><!-- .entry-header -->

		<div class="entry-content">
			<figure class="wp-block-image">
				<?php
        
/**
 * Filter the default image attachment size.
 *
 * @param string $image_size Image size. Default 'large'.
 */
        $image_size = apply_filters( 'twenty_twenty_one_attachment_size', 'full' );
        echo wp_get_attachment_image( get_the_ID(), $image_size );
        ?>

				<?php if ( wp_get_attachment_caption() ) : ?>
					<figcaption class="wp-caption-text"><?php echo wp_kses_post( wp_get_attachment_caption() ); ?></figcaption>
				<?php endif; ?>
			</figure><!-- .wp-block-image -->

			<?php
      the_content();

      wp_link_pages(
        array(
          'before'   => '<nav class="page-links" aria-label="' . esc_attr__( 'Page', 'twentytwentyone' ) . '">',
          'after'    => '</nav>',
          /* translators: %: page number. */
          'pagelink' => esc_html__( 'Page %', 'twentytwentyone' ),
        )
      );
      ?>
		</div><!-- .entry-content -->

		<footer class="entry-footer default-max-width">
			<?php
      // Check if there is a parent, then add the published in link.
      if ( wp_get_post_parent_id( $post ) ) {
        echo '<span class="posted-on">';
        printf(
          /* translators: %s: parent post. */
          esc_html__( 'Published in %s', 'twentytwentyone' ),
          '<a href="' . esc_url( get_the_permalink( wp_get_post_parent_id( $post ) ) ) . '">' . esc_html( get_the_title( wp_get_post_parent_id( $post ) ) ) . '</a>'
        );
        echo '</span>';
      } else {
        // Edit post link.
        edit_post_link(
          sprintf(
            /* translators: %s: Name of current post. Only visible to screen readers. */
            esc_html__( 'Edit %s', 'twentytwentyone' ),
            '<span class="screen-reader-text">' . get_the_title() . '</span>'
          ),
          '<span class="edit-link">',
          '</span>'
        );
      }

      // Retrieve attachment metadata.
      $metadata = wp_get_attachment_metadata();
      if ( $metadata ) {
        printf(
          '<span class="full-size-link"><span class="screen-reader-text">%1$s</span><a href="%2$s">%3$s &times; %4$s</a></span>',
          esc_html_x( 'Full size', 'Used before full size attachment link.', 'twentytwentyone' ), // phpcs:ignore WordPress.Security.EscapeOutput
          esc_url( wp_get_attachment_url() ),
          absint( $metadata['width'] ),
          absint( $metadata['height'] )
        );
      }

      if ( wp_get_post_parent_id( $post ) ) {
        // Edit post link.
        edit_post_link(
          sprintf(
            /* translators: %s: Name of current post. Only visible to screen readers. */
            esc_html__( 'Edit %s', 'twentytwentyone' ),
            '<span class="screen-reader-text">' . get_the_title() . '</span>'
          ),
          '<span class="edit-link">',
          '</span><br>'
        );

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