avia_ajax_search

if( ! function_exists( 'avia_ajax_search' ) )
{
    //now hook into wordpress ajax function to catch any ajax requests
    add_action( 'wp_ajax_avia_ajax_search', 'avia_ajax_search' );
    add_action( 'wp_ajax_nopriv_avia_ajax_search', 'avia_ajax_search' );

    function avia_ajax_search()
    {

        unset( $_REQUEST['action'] );

        if( empty( $_REQUEST['s'] ) )
        {
            $_REQUEST['s'] = array_shift( array_values( $_REQUEST ) );
        }

        if( empty( $_REQUEST['s'] ) )
        {
            die();
        }

        $defaults = array(
                        'numberposts'       => 5,
                        'post_type'         => 'any',
                        'post_status'       => 'publish',
                        'post_password'     => '',
                        'suppress_filters'  => false,
                        'results_hide_fields' => ''
                    );

        /**
         * WP Filter for the contents of the search query variable
         *
         * @param string
         * @return string
         */
        $_REQUEST['s'] = apply_filters( 'get_search_query', $_REQUEST['s'] );

        $search_parameters  = array_merge( $defaults, $_REQUEST );

        if ( $search_parameters['results_hide_fields'] !== '' )
        {
            $search_parameters['results_hide_fields'] = explode( ',', $_REQUEST['results_hide_fields'] );
        }
        else
        {
            $search_parameters['results_hide_fields'] = array();
        }

        /**
         * @used_by             Avia_Custom_Pages       10
         *
         * @param array
         * @return array
         */
        $search_query = apply_filters( 'avf_ajax_search_query', http_build_query( $search_parameters ) );

        /**
         * @used_by         Avia_Relevanssi         10
         *
         * @param string $function_name
         * @param array $search_query
         * @param array $search_parameters
         * @param array $defaults
         * @return string
         */
        $query_function = apply_filters( 'avf_ajax_search_function', 'get_posts', $search_query, $search_parameters, $defaults );

        $posts = ( ( $query_function == 'get_posts') || ! function_exists( $query_function ) ) ? get_posts( $search_query ) : $query_function( $search_query, $search_parameters, $defaults );

        $search_messages = array(
                'no_criteria_matched' => __( 'Sorry, no posts matched your criteria', 'avia_framework' ),
                'another_search_term' => __( 'Please try another search term', 'avia_framework' ),
                'time_format'         => get_option( 'date_format' ),
                'all_results_query'   => http_build_query( $_REQUEST ),
                'all_results_link'    => home_url( '?' . http_build_query( $_REQUEST ) ),
                'view_all_results'    => __( 'View all results', 'avia_framework' )
            );

        $search_messages = apply_filters( 'avf_ajax_search_messages', $search_messages, $search_query );

        if( empty( $posts ) )
        {
            $output  = "<span class='av_ajax_search_entry ajax_not_found'>";
            $output .=      "<span class='av_ajax_search_image " . av_icon_string('info') . "'>";
            $output .=      '</span>';
            $output .=      "<span class='av_ajax_search_content'>";
            $output .=          "<span class='av_ajax_search_title'>";
            $output .=              $search_messages['no_criteria_matched'];
            $output .=          '</span>';
            $output .=          "<span class='ajax_search_excerpt'>";
            $output .=              $search_messages['another_search_term'];
            $output .=          '</span>';
            $output .=      '</span>';
            $output .= '</span>';

            echo $output;
            die();
        }

        //if we got posts resort them by post type
        $output = '';
        $sorted = array();
        $post_type_obj = array();

        foreach( $posts as $post )
        {
            $sorted[ $post->post_type][] = $post;
            if( empty( $post_type_obj[ $post->post_type ] ) )
            {
                $post_type_obj[ $post->post_type ] = get_post_type_object( $post->post_type );
            }
        }

        //now we got everything we need to preapre the output
        foreach( $sorted as $key => $post_type )
        {
            // check if post titles are in the hidden fields list
            if ( ! in_array( 'post_titles', $search_parameters['results_hide_fields'] ) )
            {
                if( isset( $post_type_obj[ $key ]->labels->name ) )
                {
                    $label = apply_filters( 'avf_ajax_search_label_names', $post_type_obj[ $key ]->labels->name );
                    $output .= "<h4>{$label}</h4>";
                }
                else
                {
                    $output .= '<hr />';
                }
            }

            foreach( $post_type as $post )
            {
                $image = '';
                $extra_class = '';

                // check if image is in the hidden fields list
                if ( ! in_array( 'image', $search_parameters['results_hide_fields'] ) )
                {
                    $image = get_the_post_thumbnail( $post->ID, 'thumbnail' );
                    $extra_class = $image ? 'with_image' : '';
                    $post_type = $image ? '' : ( get_post_format( $post->ID ) != '' ? get_post_format( $post->ID ) : 'standard' );
                    $iconfont = $image ? '' : av_icon_string( $post_type );

                }

                $excerpt     = '';

                // check if post meta fields are in the hidden fields list
                if ( ! in_array( 'meta', $search_parameters['results_hide_fields'] ) )
                {
                    if( ! empty($post->post_excerpt ) )
                    {
                        $excerpt =  apply_filters( 'avf_ajax_search_excerpt', avia_backend_truncate( $post->post_excerpt, 70, ' ', '...', true, '', true ) );
                    }
                    else
                    {
                        $excerpt = apply_filters( 'avf_ajax_search_no_excerpt', get_the_time( $search_messages['time_format'], $post->ID ), $post );
                    }
                }

                $link = apply_filters( 'av_custom_url', get_permalink( $post->ID ), $post );

                $output .= "<a class ='av_ajax_search_entry {$extra_class}' href='{$link}'>";

                if ( $image !== '' || $iconfont )
                {
                    $output .= "<span class='av_ajax_search_image' {$iconfont}>";
                    $output .=      $image;
                    $output .= '</span>';
                }
                $output .= "<span class='av_ajax_search_content'>";
                $output .=      "<span class='av_ajax_search_title'>";
                $output .=          get_the_title($post->ID);
                $output .=      '</span>';

                if( $excerpt !== '' )
                {
                    $output .=      "<span class='ajax_search_excerpt'>";
                    $output .=          $excerpt;
                    $output .=      '</span>';
                }
                $output .=  '</span>';
                $output .= '</a>';
            }
        }

        $output .= "<a class='av_ajax_search_entry av_ajax_search_entry_view_all' href='{$search_messages['all_results_link']}'>{$search_messages['view_all_results']}</a>";

        echo $output;
        die();
    }
}