wpgraphql-get-tag-url-paths.php

<?php

// Get all tag url paths for sitemap.
add_action('graphql_register_types', function () {
    register_graphql_field('RootQuery', 'getTagUrlPaths', [
        'type' => ['list_of' => 'String'],
        'args' => [
            'pageNo' => [
                'type'        => 'Int',
                'description' => __('Page number', 'text-domain'),
            ],
            'perPage' => [
                'type'        => 'Int',
                'description' => __('Number of tag URLs per page', 'text-domain'),
            ],
        ],
        'description' => __('This function returns tag urls, It takes pageNo and PerPage as optional args.', 'text-domain'),
        'resolve' => function ($source, $args, $context, $info): array {
            $paged    = $args['pageNo'] ?? 1;
            $per_page = $args['perPage'] ?? 10;
            $offset   = ($paged - 1) * $per_page;
            $number   = $per_page + $offset;

            $tag_ids = get_tags([
                'orderby' => 'name',
                'order'   => 'ASC',
                'number'  => $number,
                'offset'  => $offset,
                'fields'  => 'ids',
            ]);

            $home_url = home_url();
            $tag_urls = array_map(fn ($tag_id) => get_tag_link($tag_id), $tag_ids);
            $tag_url_paths = array_map(fn ($tag_url) => str_replace($home_url, '', $tag_url), $tag_urls);

            return $tag_url_paths;
        },
    ]);
});