if ( ! function_exists( 'kleo_ajax_search' ) ) {
    function kleo_ajax_search() {
        //if "s" input is missing exit
        if ( empty( $_REQUEST['s'] ) && empty( $_REQUEST['bbp_search'] ) ) {
            die();
        }

        if ( ! empty( $_REQUEST['bbp_search'] ) ) {
            $search_string = $_REQUEST['bbp_search'];
        } else {
            $search_string = $_REQUEST['s'];
        }

        $output   = "";
        $context  = "any";
        $defaults = array(
            'numberposts'      => 4,
            'posts_per_page'   => 20,
            'post_type'        => 'any',
            'post_status'      => 'publish',
            'post_password'    => '',
            'suppress_filters' => false,
            's'                => $_REQUEST['s']
        );

        if ( isset( $_REQUEST['context'] ) && $_REQUEST['context'] != '' ) {
            $context               = explode( ",", $_REQUEST['context'] );
            $defaults['post_type'] = $context;
        }
        if ( ! empty( $defaults['post_type'] ) && is_array( $defaults['post_type'] ) ) {
            foreach ( $defaults['post_type'] as $ptk => $ptv ) {
                if ( $ptv == 'forum' ) {
                    unset( $defaults['post_type'][ $ptk ] );
                    break;
                }
            }
        }

        $defaults = apply_filters( 'kleo_ajax_query_args', $defaults );

        $the_query = new WP_Query( $defaults );
        $posts     = $the_query->get_posts();

        $members          = array();
        $members['total'] = 0;
        $groups           = array();
        $groups['total']  = 0;
        $forums           = false;


        if ( function_exists( 'bp_is_active' ) && ( $context == "any" || in_array( "members", $context ) ) ) {
            $members = bp_core_get_users( array(
                'search_terms'    => $search_string,
                'per_page'        => $defaults['numberposts'],
                'populate_extras' => false
            ) );
        }

        if ( function_exists( 'bp_is_active' ) && bp_is_active( "groups" ) && ( $context == "any" || in_array( "groups", $context ) ) ) {
            $groups = groups_get_groups( array(
                'search_terms'    => $search_string,
                'per_page'        => $defaults['numberposts'],
                'populate_extras' => false
            ) );
        }

        if ( class_exists( 'bbPress' ) && ( $context == "any" || in_array( "forum", $context ) ) ) {
            $forums = kleo_bbp_get_replies( $search_string );
        }


        //if there are no posts, groups nor members
        if ( empty( $posts ) && $members['total'] == 0 && $groups['total'] == 0 && ! $forums ) {
            $output = "<div class='kleo_ajax_entry ajax_not_found'>";
            $output .= "<div class='ajax_search_content'>";
            $output .= "<i class='icon icon-attention-circled'></i> ";
            $output .= __( "Sorry, we haven't found anything based on your criteria.", 'kleo_framework' );
            $output .= "<br>";
            $output .= __( "Please try searching by different terms.", 'kleo_framework' );
            $output .= "</div>";
            $output .= "</div>";
            echo $output;
            die();
        }

        /* Forums topics search */
        if ( ! empty( $forums ) ) {
            $output .= '<div class="kleo-ajax-part kleo-ajax-type-forums">';
            $output .= '<h4><span>' . __( "Forums", 'kleo_framework' ) . '</span></h4>';

            $i = 0;
            foreach ( $forums as $fk => $forum ) {

                $i ++;
                if ( $i <= 4 ) {
                    $image = "<i class='icon icon-chat-1'></i>";

                    $output .= "<div class ='kleo_ajax_entry'>";
                    $output .= "<div class='ajax_search_image'>$image</div>";
                    $output .= "<div class='ajax_search_content'>";
                    $output .= "<a href='" . $forum['url'] . "' class='search_title'>";
                    $output .= $forum['name'];
                    $output .= "</a>";
                    //$output .= "<span class='search_excerpt'>";
                    //$output .= $latest_activity;
                    //$output .= "</span>";
                    $output .= "</div>";
                    $output .= "</div>";
                }
            }
            $output .= "<a class='ajax_view_all' href='" . esc_url( bbp_get_search_url() . "?bbp_search=" . $search_string ) . "'>" . __( 'View forum results', 'kleo_framework' ) . "</a>";
            $output .= "</div>";
        }


        //if there are members
        if ( $members['total'] != 0 ) {

            $output .= '<div class="kleo-ajax-part kleo-ajax-type-members">';
            $output .= '<h4><span>' . __( "Members", 'kleo_framework' ) . '</span></h4>';
            foreach ( (array) $members['users'] as $member ) {
                $image = '<img src="' . bp_core_fetch_avatar( array(
                        'item_id' => $member->ID,
                        'width'   => 25,
                        'height'  => 25,
                        'html'    => false
                    ) ) . '" class="kleo-rounded" alt="">';
                if ( $update = bp_get_user_meta( $member->ID, 'bp_latest_update', true ) ) {
                    $latest_activity = char_trim( trim( strip_tags( bp_create_excerpt( $update['content'], 50, "..." ) ) ) );
                } else {
                    $latest_activity = '';
                }
                $output .= "<div class ='kleo_ajax_entry'>";
                $output .= "<div class='ajax_search_image'>$image</div>";
                $output .= "<div class='ajax_search_content'>";
                $output .= "<a href='" . bp_core_get_user_domain( $member->ID ) . "' class='search_title'>";
                $output .= $member->display_name;
                $output .= "</a>";
                $output .= "<span class='search_excerpt'>";
                $output .= $latest_activity;
                $output .= "</span>";
                $output .= "</div>";
                $output .= "</div>";
            }
            $output .= "<a class='ajax_view_all' href='" . esc_url( bp_get_members_directory_permalink() . "?s=" . $search_string ) . "'>" . __( 'View member results', 'kleo_framework' ) . "</a>";
            $output .= "</div>";
        }

        //if there are groups
        if ( $groups['total'] != 0 ) {

            $output .= '<div class="kleo-ajax-part kleo-ajax-type-groups">';
            $output .= '<h4><span>' . __( "Groups", 'kleo_framework' ) . '</span></h4>';
            foreach ( (array) $groups['groups'] as $group ) {
                $image = '<img src="' . bp_core_fetch_avatar( array(
                        'item_id' => $group->id,
                        'object'  => 'group',
                        'width'   => 25,
                        'height'  => 25,
                        'html'    => false
                    ) ) . '" class="kleo-rounded" alt="">';
                $output .= "<div class ='kleo_ajax_entry'>";
                $output .= "<div class='ajax_search_image'>$image</div>";
                $output .= "<div class='ajax_search_content'>";
                $output .= "<a href='" . bp_get_group_permalink( $group ) . "' class='search_title'>";
                $output .= $group->name;
                $output .= "</a>";
                $output .= "</div>";
                $output .= "</div>";
            }
            $output .= "<a class='ajax_view_all' href='" . esc_url( bp_get_groups_directory_permalink() . "?s=" . $search_string ) . "'>" . __( 'View group results', 'kleo_framework' ) . "</a>";
            $output .= "</div>";
        }

        //if there are posts
        if ( ! empty( $posts ) ) {
            $post_types    = array();
            $post_type_obj = array();
            foreach ( $posts as $post ) {
                $post_types[ $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 );
                }
            }

            foreach ( $post_types as $ptype => $post_type ) {
                $output .= '<div class="kleo-ajax-part kleo-ajax-type-' . esc_attr( $post_type_obj[ $ptype ]->name ) . '">';
                if ( isset( $post_type_obj[ $ptype ]->labels->name ) ) {
                    $output .= "<h4><span>" . $post_type_obj[ $ptype ]->labels->name . "</span></h4>";
                } else {
                    $output .= "<hr>";
                }
                $count = 0;
                foreach ( $post_type as $post ) {

                    $count ++;
                    if ( $count > 4 ) {
                        continue;
                    }
                    $format = get_post_format( $post->ID );
                    if ( $img_url = kleo_get_post_thumbnail_url( $post->ID ) ) {
                        $image = aq_resize( $img_url, 44, 44, true, true, true );
                        if ( ! $image ) {
                            $image = $img_url;
                        }
                        $image = '<img src="' . $image . '" class="kleo-rounded">';
                    } else {
                        if ( $format == 'video' ) {
                            $image = "<i class='icon icon-video'></i>";
                        } elseif ( $format == 'image' || $format == 'gallery' ) {
                            $image = "<i class='icon icon-picture'></i>";
                        } else {
                            $image = "<i class='icon icon-link'></i>";
                        }
                    }

                    $excerpt = "";

                    if ( ! empty( $post->post_content ) ) {
                        $excerpt = $post->post_content;
                        $excerpt = preg_replace( "/\[(.*?)(?:(\/))?\](?:(.+?)\[\/\2\])?/s", '', $excerpt );
                        $excerpt = char_trim( trim( strip_tags( $excerpt ) ), 40, "..." );
                    }
                    $link    = apply_filters( 'kleo_custom_url', get_permalink( $post->ID ) );
                    $classes = "format-" . $format;
                    $output .= "<div class ='kleo_ajax_entry $classes'>";
                    $output .= "<div class='ajax_search_image'>$image</div>";
                    $output .= "<div class='ajax_search_content'>";
                    $output .= "<a href='$link' class='search_title'>";
                    $output .= get_the_title( $post->ID );
                    $output .= "</a>";
                    $output .= "<span class='search_excerpt'>";
                    $output .= $excerpt;
                    $output .= "</span>";
                    $output .= "</div>";
                    $output .= "</div>";
                }
                $output .= '</div>';
            }

            $output .= "<a class='ajax_view_all' href='" . esc_url( home_url( '/' ) . '?s=' . $search_string ) . "'>" . __( 'View all results', 'kleo_framework' ) . "</a>";
        }



        echo $output;
        die();
    }
}