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<?php

/**
 * The functions to display Content or Excerpt in a theme.
 */


/**
 * If the theme doesn't support 'jetpack-content-options', don't continue.
 */
if ( ! current_theme_supports( 'jetpack-content-options' ) ) {
  return;
}


/**
 * Get the Blog Display setting.
 * If theme is using both 'Content' and 'Excerpt' then this setting will be called 'Mixed'.
 */
$options      = get_theme_support( 'jetpack-content-options' );
$blog_display = ( ! empty( $options[0]['blog-display'] ) ) ? $options[0]['blog-display'] : null;
$blog_display = preg_grep( '/^(content|excerpt)$/', (array) $blog_display );
sort( $blog_display );
$blog_display = implode( ', ', $blog_display );
$blog_display = ( 'content, excerpt' === $blog_display ) ? 'mixed' : $blog_display;


/**
 * If the theme doesn't support 'jetpack-content-options[ 'blog-display' ]', don't continue.
 */
if ( ! in_array( $blog_display, array( 'content', 'excerpt', 'mixed' ) ) ) {
  return;
}

/* function jetpack_blog_display_custom_excerpt() – Apply Content filters. */

/* function jetpack_the_content_to_the_excerpt() – Display Excerpt instead of Content. */

/* function jetpack_the_excerpt_to_the_content() – Display Content instead of Excerpt. */

/* function jetpack_the_content_customizer() – Display both Content and Excerpt instead of Content in the Customizer so live preview can switch between them. */

/* function jetpack_the_excerpt_customizer() – Display both Content and Excerpt instead of Excerpt in the Customizer so live preview can switch between them. */

/* function jetpack_the_excerpt_mixed_customizer() – Display Content instead of Excerpt in the Customizer when theme uses a ‘Mixed’ display. */

/* function jetpack_the_content_customizer_class() – Returns a class value, `output-the-content` by default. */

if ( is_customize_preview() ) {
  /*
	 * Display Content and Excerpt if the default Blog Display is 'Content'
	 * and we are in the Customizer.
	 */
  if ( 'content' === $blog_display ) {
    add_filter( 'the_content', 'jetpack_the_content_customizer' );
  }

  /*
	 * Display Content and Excerpt if the default Blog Display is 'Excerpt'
	 * and we are in the Customizer.
	 */
  if ( 'excerpt' === $blog_display ) {
    add_filter( 'the_excerpt', 'jetpack_the_excerpt_customizer' );
  }

  /*
	 * Display Content and Excerpt if the default Blog Display is 'Mixed'
	 * and we are in the Customizer.
	 */
  if ( 'mixed' === $blog_display ) {
    add_filter( 'the_content', 'jetpack_the_content_customizer' );
    add_filter( 'the_excerpt', 'jetpack_the_excerpt_mixed_customizer' );
  }
} else {
  $display_option = get_option( 'jetpack_content_blog_display', $blog_display );

  /*
	 * Display Excerpt if the default Blog Display is 'Content'
	 * or default Blog Display is 'Mixed'
	 * and the Option picked is 'Post Excerpt'
	 * and we aren't in the Customizer.
	 */
  if ( ( 'content' === $blog_display || 'mixed' === $blog_display ) && 'excerpt' === $display_option ) {
    add_filter( 'the_content', 'jetpack_the_content_to_the_excerpt' );
  }

  /*
	 * Display Content if the default Blog Display is 'Excerpt'
	 * or default Blog Display is 'Mixed'
	 * and the Option picked is 'Full Post'
	 * and we aren't in the Customizer.
	 */
  if ( ( 'excerpt' === $blog_display || 'mixed' === $blog_display ) && 'content' === $display_option ) {
    add_filter( 'the_excerpt', 'jetpack_the_excerpt_to_the_content' );
  }
}
 

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