<?php

add_action( 'jet-engine/register-macros', function(){ 
  
	class Current_Meta_Array_Keys extends \Jet_Engine_Base_Macros {

		public function macros_tag() {
			return 'get_array_keys';
		}

		public function macros_name() {
			return 'Array keys';
		}

		public function macros_args() {
			return array(
				'meta_key'    => array(
					'label'   => 'Meta key',
					'type'    => 'text',
					'default' => '',
				),
				'to_regexp'    => array(
					'label'   => 'To REGEXP',
					'type'    => 'select',
					'options' => array(
						'no'  => 'No',
						'yes' => 'Yes',
					),
					'default' => '',
				),
			);
		}

		public function macros_callback( $args = array() ) {

			$object = $this->get_macros_object();
			
			$meta_key  = ! empty( $args['meta_key'] ) ? $args['meta_key'] : null;
			$to_regexp = ! empty( $args['to_regexp'] ) ? $args['to_regexp'] : 'no';
			
			if ( ! $meta_key ) {
				return;
			}

			$meta = jet_engine()->listings->macros->get_current_meta( $field_value, $meta_key );

			if ( ! is_array( $meta ) ) {
				return;
			}
			
			$result = array_keys( $meta );
			
			$delimiter = ',';
			
			if ( $to_regexp === 'yes' ) {
				$result = array_map( function( $item ) {
					return sprintf( '"%s"', $item );
				}, $result );
				$delimiter = '|';
			}
			
			return implode( $delimiter, $result );
		}
	}
	
	new Current_Meta_Array_Keys();
	
} );