/**
* Suggests users in a multisite environment.
*
* For input fields where the admin can select a user based on email or
* username, this script shows an autocompletion menu for these inputs. Should
* only be used in a multisite environment. Only users in the currently active
* site are shown.
*
* @since 3.4.0
* @output wp-admin/js/user-suggest.js
*/

/* global ajaxurl, current_site_id, isRtl */

(function( $ ) {
var id = ( typeof current_site_id !== 'undefined' ) ? '&site_id=' + current_site_id : '';
$( function() {
var position = { offset: '0, -1' };
if ( typeof isRtl !== 'undefined' && isRtl ) {
position.my = 'right top';
position.at = 'right bottom';
}

/**
* Adds an autocomplete function to input fields marked with the class
* 'wp-suggest-user'.
*
* A minimum of two characters is required to trigger the suggestions. The
* autocompletion menu is shown at the left bottom of the input field. On
* RTL installations, it is shown at the right top. Adds the class 'open' to
* the input field when the autocompletion menu is shown.
*
* Does a backend call to retrieve the users.
*
* Optional data-attributes:
* - data-autocomplete-type (add, search)
* The action that is going to be performed: search for existing users
* or add a new one. Default: add
* - data-autocomplete-field (user_login, user_email)
* The field that is returned as the value for the suggestion.
* Default: user_login
*
* @see wp-admin/includes/admin-actions.php:wp_ajax_autocomplete_user()
*/
$( '.wp-suggest-user' ).each( function(){
var $this = $( this ),
autocompleteType = ( typeof $this.data( 'autocompleteType' ) !== 'undefined' ) ? $this.data( 'autocompleteType' ) : 'add',
autocompleteField = ( typeof $this.data( 'autocompleteField' ) !== 'undefined' ) ? $this.data( 'autocompleteField' ) : 'user_login';

$this.autocomplete({
source: ajaxurl + '?action=autocomplete-user&autocomplete_type=' + autocompleteType + '&autocomplete_field=' + autocompleteField + id,
delay: 500,
minLength: 2,
position: position,
open: function() {
$( this ).addClass( 'open' );
},
close: function() {
$( this ).removeClass( 'open' );
}
});
});
});
})( jQuery );