<?php

/*
 * Add your own functions here.
 * You can also copy some of the theme functions into this file.
 * Wordpress will use those functions instead of the original functions then.
 */


if ( !function_exists( 'write_log' ) ) {
  function write_log( $log )  {
#   if ( true === WP_DEBUG ) {
      if ( is_array( $log ) || is_object( $log ) ) {
        error_log( print_r( $log, true ), 3, '/tmp/manuel.cillero.errors.log' );
      }
      else {
        error_log( "$log\n", 3, '/tmp/manuel.cillero.errors.log' );
      }
#   }
  }
}

/*
 * Force URLs in srcset attributes into HTTPS scheme.
 * See http://wptavern.com/how-to-fix-images-not-loading-in-wordpress-4-4-while-using-ssl
 */
add_filter( 'wp_calculate_image_srcset', 'ssl_srcset' );
function ssl_srcset( $sources ) {
  foreach ( $sources as &$source ) {
    $source['url'] = set_url_scheme( $source['url'], 'https' );
  }
  return $sources;
}

/*
 * Add EXIF data only in photoblog posts using a filter.
 * See https://ithemes.com/2011/03/20/automatically-add-content-to-your-wordpress-posts-and-pages#Using_Filters
 */
add_filter( 'the_content', 'add_exif_data' );
function add_exif_data( $content ) {
  if ( function_exists('exifography_display_exif') && is_single() && has_category( 976 ) ) {
    $content .= exifography_display_exif();
  }
  return $content;
}

/*
 * Visual consolidation of tag clouds.
 * See https://codex.wordpress.org/Function_Reference/wp_tag_cloud
 */
add_filter( 'widget_tag_cloud_args', 'custom_tag_cloud_widget' );
function custom_tag_cloud_widget( $args ) {
	$args['number'] = 0;     // Adding a 0 will display all tags.
	$args['largest'] = 26;   // Largest tag.
	$args['smallest'] = 11;  // Smallest tag.
	$args['unit'] = 'px';    // Tag font unit.
	return $args;
}
add_filter( 'wp_generate_tag_cloud', 'xf_tag_cloud', 10, 3 );
function xf_tag_cloud( $tag_string ) {
  return preg_replace( "/style='font-size:.+px/", "$0 !important", $tag_string );
}

/*
 * Remove Pingbacks from Recent Comments Widget.
 * http://ronangelo.com/remove-pingbacks-on-recent-comments-widget
 */
 add_filter( 'widget_comments_args', 'remove_pingbacks_recent_comments' );
function remove_pingbacks_recent_comments( $array ) {
	$array['type'] = 'comment';
	return $array;
}

/*
 * Force avia_post_nav() to cycling categories.
 * See http://www.kriesi.at/support/topic/avia_post_nav-function-not-cycling-categories-even-when-set-to-true
 */
add_filter( 'avia_post_nav_settings', 'avia_same_category_filter', 10, 1 );
function avia_same_category_filter( $settings ) {
  $settings['same_category'] = true;
  return $settings;
}

/*
 * By default the post single page title will be “Blog – Latest News”. This
 * function alter this title to reflect the post category instead.
 * See http://www.kriesi.at/documentation/enfold/replace-the-default-blog-latest-news-title
 */
add_filter( 'avf_title_args', 'fix_single_post_title', 10, 2 );
function fix_single_post_title( $args, $id ) {
  $category = get_the_category();
  if ( $args['title'] == __( 'Blog - Latest News', 'avia_framework' ) && !empty( $category ) ) {
    // Social title for Twitter, Facebook & LinkedIn categories:
    $args['title'] = in_array( $category[0]->term_id, array( 1562, 1563, 1564 ) ) ? 'Social' : $category[0]->name;
    $args['link'] = NULL;
    $args['heading'] = 'h1';
  }
  return $args;
}

/*
 * Tag page with excerpt and featured image.
 * See http://www.kriesi.at/support/topic/archive-page-with-excerpt-and-featured-image/
 */
add_filter( 'avf_blog_style', 'avia_change_tag_page_layout', 10, 2 );
function avia_change_tag_page_layout( $layout, $context ) {
  if ( is_tag() ) {
    $layout = 'single-small';
  }
  return $layout;
}

/*
 * Add new class in Social, Twitter, Facebook & LinkedIn posts.
 * See https://tommcfarlin.com/add-class-to-single-post/
 */
add_filter( 'post_class', 'add_social_class' );
function add_social_class( $classes ) {
  $category = get_the_category();
  if ( !empty( $category ) && in_array( $category[0]->term_id, array( 1561, 1562, 1563, 1564 ) ) ) {
    $classes[] = 'post-entry-social';
  }
  return $classes;
}

/*
 * Breadcrumb formatting for social and categories content.
 * See http://www.kriesi.at/support/topic/how-to-modify-in-child_theme-the-function-avia_breadcrumbs-finished-with-s
 */
add_filter( 'avia_breadcrumbs_trail', 'avia_change_breadcrumb', 50, 2 );
function avia_change_breadcrumb( $trail, $args ) {
  if ( is_single() ) {
    $category = get_the_category();
  	if ( !empty( $category ) ) {
      // Correct breadcrumb for Blog, Bloc de notas & Fotoblog single posts:
      if ( in_array( $category[0]->term_id, array( 982, 978, 976 ) ) && strpos( $trail[1], 'social' ) ) {
        switch ( $category[0]->term_id ) {
          case 982:   // Blog
            array_splice( $trail, 1, 2, array( '<a href="/blog/category/blog">Blog</a>' ) );
            break;
          case 978:   // Bloc de notas
            array_splice( $trail, 1, 2, array( '<a href="/blog/category/notebook">Bloc de notas</a>' ) );
            break;
          case 976:   // Fotoblog
            array_splice( $trail, 1, 2, array( '<a href="/blog/category/photoblog">Fotoblog</a>' ) );
        }
      }
      // Social breadcrumb for Twitter, Facebook & LinkedIn content:
      elseif ( in_array( $category[0]->term_id, array( 1562, 1563, 1564 ) ) ) {
        unset ( $trail[2] );
      }
  	}
  }
  elseif ( is_tag() || is_category( array( 982, 978, 976 ) ) ) {
    // Posts breadcrumb for Blog, Bloc de notas & Fotoblog categories:
    array_splice( $trail, 1, 0, array( '<a href="/posts" title="Todas las entradas">Entradas</a>' ) );
  }
	return $trail;
}

/*
 * Auto generate the post title if it's empty and post has content.
 */
add_filter( 'wp_insert_post_data', 'autogenerate_title', 1, 2 );
function autogenerate_title( $data, $postarr ) {
  $title = preg_replace( '!\s+!', ' ', str_replace( '&nbsp;', ' ', $data['post_title'] ) );
  $text_title = trim( strip_tags( $title ) );

  if ( empty( $text_title ) ) {
    $content = preg_replace( '!\s+!', ' ', str_replace( '&nbsp;', ' ', $data['post_content'] ) );
    $text_content = trim( strip_tags( $content ) );

    if ( ! empty( $text_content ) ) {
      $content_words = explode( ' ', $text_content );
      $text_title = implode( ' ', array_slice( $content_words, 0, 4 ) );
      $data['post_title'] = count( $content_words ) > 4 ? "$text_title …" : $text_title;
    }
  }

  return $data;
}

/*
 * Sharing content in social networks if required.
 */
add_action( 'save_post', 'share_post', 1, 2 );
function share_post( $post_id, $post ) {
  // Count post categories:
  $post_categories = get_the_category( $post_id );
  $categories = array_values( array_column( $post_categories, 'name' ) );
  $num_categories = count( $categories );

  // Review post only for Social, Twitter, Facebook & LinkedIn categories:
  $num_social_categories = count( array_intersect( array( 'Social', 'Twitter', 'Facebook', 'LinkedIn' ), $categories ) );

  // Nothing to do if there aren't social categories:
  if ( $num_social_categories > 0 ) {
    // Get cleaned post title:
    $title = preg_replace( '!\s+!', ' ', str_replace( '&nbsp;', ' ', $post->post_title ) );
    $text_title = trim( strip_tags( $title ) );
    if ( mb_strrpos( $text_title, ' …' ) == mb_strlen( $text_title ) - 2 ) {
      $text_title = mb_substr( $text_title, 0, mb_strlen( $text_title ) - 2 );
    }

    // Get cleaned post content:
    $content = preg_replace( '!\s+!', ' ', str_replace( '&nbsp;', ' ', $post->post_content ) );
    $text_content = trim( strip_tags( $content ) );

    // Adapting content for pure social posts:
    if ( $num_categories == $num_social_categories ) {
      $post_content = trim( strip_tags( $content, '<p><a><strong><b><em><i><br />' ) );
      /*
          Remove html attributes except for anchor tag:

          /              Start Pattern
           <             Match '<' at beginning of tags
           (             Start Capture Group $1 - Tag Name
            [a-z]        Match 'a' through 'z'
            [a-z0-9]+    Match 'a' through 'z' or '0' through '9' one or more times
           )             End Capture Group
           [^>]*?        Match anything other than '>', Zero or More times, not-greedy (wont eat the /)
           (\/?)         Capture Group $2 - '/' if it is there
           >             Match '>'
          /i             End Pattern - Case Insensitive
      */
      $post_content = preg_replace( "/<([a-z][a-z0-9]+)[^>]*?(\/?)>/i", '<$1$2>', $post_content );
      $post->post_content = str_replace( array( '<b>', '</b>', '<i>', '</i>' ), array( '<strong>', '</strong>', '<em>', '</em>' ), $post_content );
    }

    // Preparing post excerpt for Twitter:
    $text_excerpt = $text_content;
    if ( mb_strpos( $text_content, $text_title ) !== 0 ) {
      $post_excerpt = $text_title;
      $post_excerpt .= empty( $text_content ) ? '.' : ". $text_content";
    }
    $post_excerpt = html_entity_decode( $text_excerpt );
    $limit = has_post_thumbnail( $post ) ? 140 - 25 : 140;
    if ( mb_strlen( $post_excerpt ) > $limit ) {
      preg_match_all( '#\bhttps?://[^\s()<>]+(?:\([\w\d]+\)|([^[:punct:]\s]|/))#', $post_excerpt, $matches );
      for ( $i = 0; $i < count( $matches[0] ); $i++ ) {
        $post_excerpt = str_replace( $matches[0][$i], shorten_url( $matches[0][$i] ), $post_excerpt );
      }
      if ( mb_strlen( $post_excerpt ) > $limit ) {
        $post_excerpt = mb_substr( $post_excerpt, 0, $limit - 25 );
        $post_excerpt = mb_substr( $post_excerpt, 0, mb_strrpos( $post_excerpt, ' ' ) ) . '… ';
        $permalink = get_permalink( $post );
        $post_excerpt .= ( mb_strlen( $post_excerpt ) + mb_strlen( $permalink ) ) <= $limit ? $permalink : shorten_url( $permalink );
      }
    }
    $post->post_excerpt = $post_excerpt;

    // Unhook this function so it doesn't loop infinitely:
    remove_action( 'save_post', 'share_post', 1, 2 );

    // Update the post, which calls save_post again:
    wp_update_post( $post );

    // Re-hook this function:
    add_action( 'save_post', 'share_post', 1, 2 );
  }
}

function shorten_url( $long_url ) {
  $bitly_login = 'o_7sko9rcpp7';
  $bitly_apikey = 'R_f414bf78d22443c6a6bad3c58921fd96';
  $bitly_shorten = "http://api.bit.ly/v3/shorten?login=" . $bitly_login . "&apiKey=" . $bitly_apikey . "&longUrl=" . $long_url . "&format=json";
  return json_decode( file_get_contents( $bitly_shorten ) )->data->url;
}

/*
 * Default image fallback.
 * See https://www.artifaktdigital.com/use-yoast-seo-ogimage-as-a-fallback-featured-image-a-tutorial/
 *
# add_filter( 'post_thumbnail_html', 'social_post_defautl_thumbnail', 20, 5 );
function social_post_defautl_thumbnail( $html, $post_id, $post_thumbnail_id, $size, $attr ) {
  global $wpdb;

  if ( empty( $html ) ) {
    // Return you Yoast SEO default image if the post thumbnail html is empty:
    $opt = get_option( 'wpseo_social' );
    $url = $opt['og_default_image'];
    if ( $id !== '' ) {
      // Retrieves the attachment ID from the file URL:
      $attachment = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE guid = '%s';", $url ) );
      $id = $attachment[0];
      return wp_get_attachment_image( $id, $size );
    }
  }
  return $html;
} */

/*
 * Add a button to display the number of characters in Title and Content editor;
 * and also add a character counter to the Excerpt box (with no limit).
 * See https://premium.wpmudev.org/blog/character-counter-excerpt-box
 */
add_action( 'admin_head-post.php', 'char_counter_js' );
add_action( 'admin_head-post-new.php', 'char_counter_js' );
function char_counter_js() {
  if ( get_post_type() == 'post' ) { echo '
<script>
jQuery(document).ready(function(){
  var urls_regexp = new RegExp(/https?:\/\/(www\.)?[-a-zA-Z0-9@:%_\+.~#?&//=]{2,256}\.[a-z]{2,4}\b(\/[-a-zA-Z0-9@:%_\+.~#?&//=]*)?/gi);

  function htmlDecode(input){
    input = input.replace(/(<[a-zA-Z\/][^<>]*>|\[([^\]]+)\])/ig,"");
    // https://stackoverflow.com/a/34064434
    var doc = new DOMParser().parseFromString(input, "text/html");
    return doc.documentElement.textContent;
  }
  function get_content_length(){
    var title_length = htmlDecode(jQuery("#title").val()).length;
    var content = "";
    // Are we using visual editor?
    if ((typeof tinyMCE != "undefined") && tinyMCE.activeEditor && !tinyMCE.activeEditor.isHidden()){
      content = htmlDecode(tinyMCE.activeEditor.getContent());
    }
    // Or html editor?
    else {
      content = htmlDecode(jQuery("#content").val());
    }
    var content_length = content.length;
    var tuit_length = content_length;
    var urls = content.match(urls_regexp);
    if (urls) for (i = 0; i < urls.length; i++) tuit_length = tuit_length - urls[i].length + 23;
    var return_text = "El título tiene " + title_length.toString() + " caracteres.";
    return_text += " Y el contenido " + content_length.toString();
    return_text += content_length != tuit_length ? " (" + tuit_length.toString() + " en Twitter)." : ".";
    return return_text;
  }
  jQuery("#wp-content-media-buttons").after("<button id=\"content-counter\" class=\"button\" title=\"Número de caracteres\" href=\"javascript:;\"><strong>#</strong></button>");
  jQuery("#content-counter").click(function(e){ alert(get_content_length()); e.preventDefault(); });

  function get_excerpt_length(){
    var excerpt_length = jQuery("#excerpt").val().length;
    var tuit_length = excerpt_length;
    var urls = jQuery("#excerpt").val().match(urls_regexp);
    if (urls) for (i = 0; i < urls.length; i++) tuit_length = tuit_length - urls[i].length + 23;
    tuit_length = 140 - tuit_length;
    return excerpt_length.toString() + " / " + tuit_length.toString() + " (Twitter)";
  }
  jQuery("#postexcerpt .handlediv").after("<div style=\"position:absolute;top:12px;right:34px;color:#666;\"><span id=\"excerpt_counter\"></span></div>");
  jQuery("span#excerpt_counter").text(get_excerpt_length());
  jQuery("#excerpt").keyup(function(){ jQuery("span#excerpt_counter").text(get_excerpt_length()); });
});
</script>';
  }
}

/*
 * Ensure that AccessPress Social Auto Post works in all cases.
 *
add_action( 'publish_post', 'publish_social_post', 10, 2 );
function publish_social_post( $ID, $post ) {
  $auto_post = $_POST['asap_auto_post'];
  if ( $auto_post == 'yes' || $auto_post == '' ) {
    $plugin_asap_dir = ABSPATH . 'wp-content/plugins/accesspress-social-auto-post/';
    // Only Facebook and LinkedIn:
    include_once( $plugin_asap_dir . 'api/facebook/facebook.php' );
#   include_once( $plugin_asap_dir . 'api/twitter/codebird.php' );
#   include_once( $plugin_asap_dir . 'api/tumblr/TumblrAPIClient.php' );
    include_once( $plugin_asap_dir . 'api/linkedin/liOAuth.php' );
    include( $plugin_asap_dir . 'inc/cores/auto-post.php' );
    $check = update_post_meta( $post->ID, 'asap_auto_post', 'no' );
    $_POST['asap_auto_post'] = 'no';
  }
} */

/*
 * Remove Avia Framework debug information in child theme.
 * See http://www.kriesi.at/support/topic/removal-of-theme-debug-info/#post-386207
 */
add_action( 'init', 'avia_remove_debug' );
function avia_remove_debug() {
  remove_action( 'wp_head', 'avia_debugging_info', 1000 );
}

/*
 * Disable the W3 Total Cache Footer Comment.
 * See https://www.dylanbarlett.com/2014/01/disabling-w3-total-cache-footer-comment/
 */
add_filter( 'w3tc_can_print_comment', '__return_false', 10, 1 );

/*
 * Adding a dynamic current year to socket.
 * See http://www.kriesi.at/support/topic/how-do-i-add-a-dynamic-current-year-to-socket
 */
add_shortcode( 'y', 'current_year_func' );
function current_year_func( $atts ) {
	return date( 'Y' );
}