BuddyPress Bootstrap 5 Pagination

<?php

/**
 * Function for recreating BuddyPress pagination with BootStrap 5 markup
 *
 * @package SystemPress
 */

// Exit if accessed directly.
defined('ABSPATH') || exit;

/**
 * Pagination for loops
 *
 * @param string $position
 *
 * @since 1.0.0
 */
function systmp_bp_pagination($position, $echo = true, $params = [])
{

	//global $wp_query;

	$add_args = [];

	//add query (GET) parameters to generated page URLs
	/*if (isset($_GET[ 'sort' ])) {
        $add_args[ 'sort' ] = (string)$_GET[ 'sort' ];
    }*/

	$screen          = 'dir';
	$pagination_type = bp_current_component();

	$page_max ='';
	$page_cur = '';
	$pag_class = '';

	if (bp_is_user()) {
		$screen = 'user';
	} elseif (bp_is_group()) {
		$screen          = 'group';
		$pagination_type = bp_current_action();

		if (bp_is_group_admin_page()) {
			$pagination_type = bp_action_variable(0);
		}
	}

	switch ($pagination_type) {
		case 'blogs':
			$pag_count   = bp_get_blogs_pagination_count();
			$page_arg    = $GLOBALS['blogs_template']->pag_arg;
			break;

		case 'members':
		case 'friends':
		case 'manage-members':
			$pag_count = bp_get_members_pagination_count();
			$page_arg = $GLOBALS['members_template']->pag_arg;
			$page_cur = $GLOBALS['members_template']->pag_page;
			$page_max 	 = bp_core_number_format(ceil((int) $GLOBALS['members_template']->total_member_count/ (int) $GLOBALS['members_template']->pag_num));
			$pag_class = ' pagination-sm';

			if (bp_is_group()) {
				$pag_class = ' no-ajax';
			}

			break;

	

		case 'friends':
		case 'manage-members':
			$pag_class = ' no-ajax';

			break;

		case 'groups':
			global $groups_template;
			$pag_count   = bp_get_groups_pagination_count();
			$page_arg    = $GLOBALS['groups_template']->pag_arg;
			$page_cur 	 =  $groups_template->pag_page;
			$page_max 	 = bp_core_number_format(ceil((int) $groups_template->total_group_count / (int) $groups_template->pag_num));
			break;

		case 'notifications':
			$pag_count   = bp_get_notifications_pagination_count();
			$page_arg    = buddypress()->notifications->query_loop->pag_arg;
			break;

		case 'membership-requests':
			$pag_count   = bp_get_group_requests_pagination_count();
			$page_arg    = $GLOBALS['requests_template']->pag_arg;
			break;

		default:
			/**
			 * Use this filter to define your custom pagination parameters.
			 * 
			 * @abstract bp_nouveau_pagination_params
			 * @since 1.0.0
			 *
			 * @param array $value {
			 *     An associative array of pagination parameters.
			 *     @type string   $pag_count Information about the pagination count.
			 *                               eg: "Viewing 1 - 10 of 20 items".
			 *     @type string   $pag_links The Pagination links.
			 *     @type string   $page_arg  The argument to use to pass the page number.
			 * }
			 * @param string $pagination_type Information about the pagination type.
			 */
			$pagination_params = apply_filters(
				'systmp_bp_pagination_params',
				array(
					'pag_count' => '',
					'page_arg'  => '',
					'page_cur'  => '',
					'page_max' => '',
				),
				$pagination_type
			);

			list($pag_count, $page_arg, $page_cur, $page_max) = array_values($pagination_params);
			break;
	}
	$count_id = sprintf('%1$s-%2$s-count-%3$s', $pagination_type, $screen, $position);
	$pag_id = sprintf('%1$s-%2$s-pag-%3$s', $pagination_type, $screen, $position);

	//add query (GET) parameters to generated page URLs
	/*if (isset($_GET[ 'sort' ])) {
        $add_args[ 'sort' ] = (string)$_GET[ 'sort' ];
    }*/

	$pages = paginate_links(
		array_merge([
			//	'base'         => str_replace(999999999, '%#%', esc_url(get_pagenum_link(999999999))),
			'base'         => add_query_arg($page_arg, '%#%'),
			'format'       => '',
			'total'        => $page_max,
			'current'      => $page_cur,
			'type'         => 'array',
			'show_all'     => false,
			'end_size'     => 3,
			'mid_size'     => 1,
			'prev_next'    => true,
			'prev_text'    => __('« Prev'),
			'next_text'    => __('Next »'),
			'add_args'     => $add_args,
			'add_fragment' => ''
		], $params)
	);


	$pagination = '';
	$pagination .= '<div id="pag-' . sanitize_html_class($position) . '" class="bp-pagination row row-cols-1 row-cols-md-2 mb-2">';

	if ($pag_count) :
		$pagination .= '	<div id="' . sanitize_html_class($count_id) . '" class="pag-count col">';

		$pagination .= '		<div class="d-flex justify-content-center justify-content-md-start p-2">' . esc_html($pag_count) . '</div>';

		$pagination .= '	</div>';
	endif;

	if (is_array($pages)) :

		$pagination .= '	<nav id="' . sanitize_html_class($pag_id) . '" class="pagination-links col" aria-label="Page navigation">';
		$pagination .= '		<ul class="pagination justify-content-center justify-content-md-end'. $pag_class .'">';

		foreach ($pages as $page) :
			$pagination .= '			<li class="page-item' . (strpos($page, 'current') !== false ? ' active' : '') . '"> ' . str_replace('page-numbers', 'page-numbers page-link', $page) . '</li>';
		endforeach;

		$pagination .= '		</ul>';
		$pagination .= '	</nav>';

	endif;

	$pagination .= '</div>';

	if ($echo) {
		echo $pagination;
	} else {
		return $pagination;
	}

	return null;
}