<?
add_theme_support( 'post-thumbnails' );
add_theme_support( 'menus' );
add_theme_support( 'woocommerce' );
add_theme_support( 'html5', array( 'search-form' ) );
add_editor_style();

define('ME_V', 0.07);
define('ME_IMG', get_stylesheet_directory_uri() . '/img/');

global $isl;
$isl = 0;

add_image_size( 'banner', 1600, 800, true);

function isl_init() {

  $args = [
    'public' => true,
    'has_archive' => true,
    'label'  => 'Artists',
    'show_ui' => true,
    'supports' => ['title', 'editor', 'thumbnail'],
    'rewrite' => [
      'slug' => 'artists'
    ]
  ];
  register_post_type('isl_artist', $args);

  register_taxonomy(
    'isl_type',
    ['isl_artwork'],
    array(
      'label' => __( 'Type' ),
      'public' => true,
      'hierarchical' => true,
      'rewrite' => [
        'slug' => 'type'
      ]
    )
  );

  register_taxonomy(
    'isl_feature',
    ['isl_artist'],
    array(
      'label' => __( 'Feature' ),
      'public' => true,
      'hierarchical' => true,
      'rewrite' => [
        'slug' => 'feature'
      ]
    )
  );

  $args = [
    'public' => true,
    'has_archive' => true,
    'label'  => 'Artwork',
    'show_ui' => true,
    'supports' => ['title', 'editor', 'thumbnail'],
    'rewrite' => [
      'slug' => 'artwork'
    ]
  ];
  register_post_type('isl_artwork', $args);

  $args = [
    'public' => true,
    'has_archive' => true,
    'label'  => 'Exhibitions',
    'show_ui' => true,
    'supports' => ['title', 'content', 'editor', 'thumbnail'],
    'rewrite' => [
      'slug' => 'exhibition'
    ]
  ];
  register_post_type('isl_event', $args);
}
add_action('init', 'isl_init');


function new_excerpt_more($more) {
  return '...';
}
add_filter('excerpt_more', 'new_excerpt_more');

function isl_excerpt_length( $length ) {
  return 30;
}
add_filter( 'excerpt_length', 'isl_excerpt_length', 999 );

function get_post_thumbnail_url($id, $size = 'large')
{
  $thumb_url = false;
  if( has_post_thumbnail($id) )
  {
    $thumb_id = get_post_thumbnail_id($id);
    $thumb_url_array = wp_get_attachment_image_src($thumb_id, $size, true);
    $thumb_url = $thumb_url_array[0];
  }
  return $thumb_url;
}

require_once('functions/admin.php');

function pr($d) {
  echo '<pre>';
  var_dump($d);
  echo '</pre>';
}

function bidirectional_acf_update_value( $value, $post_id, $field  ) {
  
  // vars
  $field_name = $field['name'];
  $field_key = $field['key'];
  $global_name = 'is_updating_' . $field_name;
  
  
  // bail early if this filter was triggered from the update_field() function called within the loop below
  // - this prevents an inifinte loop
  if( !empty($GLOBALS[ $global_name ]) ) return $value;
  
  
  // set global variable to avoid inifite loop
  // - could also remove_filter() then add_filter() again, but this is simpler
  $GLOBALS[ $global_name ] = 1;
  
  
  // loop over selected posts and add this $post_id
  if( is_array($value) ) {
  
    foreach( $value as $post_id2 ) {
      
      // load existing related posts
      $value2 = get_field($field_name, $post_id2, false);
      
      
      // allow for selected posts to not contain a value
      if( empty($value2) ) {
        
        $value2 = array();
        
      }
      
      
      // bail early if the current $post_id is already found in selected post's $value2
      if( in_array($post_id, $value2) ) continue;
      
      
      // append the current $post_id to the selected post's 'related_posts' value
      $value2[] = $post_id;
      
      
      // update the selected post's value (use field's key for performance)
      update_field($field_key, $value2, $post_id2);
      
    }
  
  }
  
  
  // find posts which have been removed
  $old_value = get_field($field_name, $post_id, false);
  
  if( is_array($old_value) ) {
    
    foreach( $old_value as $post_id2 ) {
      
      // bail early if this value has not been removed
      if( is_array($value) && in_array($post_id2, $value) ) continue;
      
      
      // load existing related posts
      $value2 = get_field($field_name, $post_id2, false);
      
      
      // bail early if no value
      if( empty($value2) ) continue;
      
      
      // find the position of $post_id within $value2 so we can remove it
      $pos = array_search($post_id, $value2);
      
      
      // remove
      unset( $value2[ $pos] );
      
      
      // update the un-selected post's value (use field's key for performance)
      update_field($field_key, $value2, $post_id2);
      
    }
    
  }
  
  
  // reset global varibale to allow this filter to function as per normal
  $GLOBALS[ $global_name ] = 0;
  
  
  // return
    return $value;
    
}

// add_filter('acf/update_value/name=art', 'bidirectional_acf_update_value', 10, 3);
// add_filter('acf/update_value/name=event', 'bidirectional_acf_update_value', 10, 3);

add_action( 'admin_init', 'posts_order_wpse_91866' );

function posts_order_wpse_91866() 
{
    add_post_type_support( 'isl_artist', 'page-attributes' );
}

// options
if( function_exists('acf_add_options_page') ) {
  acf_add_options_page(array(
		'page_title' 	=> 'Theme General Settings',
		'menu_title'	=> 'Theme Settings',
		'menu_slug' 	=> 'theme-general-settings',
		'capability'	=> 'edit_posts',
		'redirect'		=> false
	));
  
  acf_add_options_sub_page(array(
    'page_title'  => 'Archive Pages',
    'menu_title'  => 'Archive Pages',
    'parent_slug' => 'theme-general-settings',
  ));
}

// function order_by_surname ($orderby_statement) {
//   $orderby_statement = "RIGHT(post_title, LOCATE(' ', REVERSE(post_title)) - 1)";
//     return $orderby_statement;
// }

// add_filter( 'posts_orderby', 'order_by_surname' );

add_filter( 'posts_orderby', function( $orderby, \WP_Query $q )
{
    if( 'isl_last_word' === $q->get( 'orderby' ) && $get_order =  $q->get( 'order' ) )
    {
        if( in_array( strtoupper( $get_order ), ['ASC', 'DESC'] ) )
        {
            global $wpdb;
            $orderby = " SUBSTRING_INDEX( {$wpdb->posts}.post_title, ' ', -1 ) " . $get_order;
        }
    }
    return $orderby;
}, PHP_INT_MAX, 2 );

function isl_mce_before_init( $settings ) {
  $custom_colours = ' "98002E", "Red",
                      "347C2C", "Green",
                      "000000", "Black",
                      "A59687", "Grey"';

  $settings['textcolor_map'] = '['.$custom_colours.']';
  $settings['textcolor_rows'] = 1;

  return $settings;
}
add_filter( 'tiny_mce_before_init', 'isl_mce_before_init' );
?>