/**
 * Extends topic shortcode for BuddyBoss to allow filtering by author.
 */
class BBP_Extended_Shortcode {

    /**
     * Cached attributes for the current shortcode instance.
     *
     * @var array Attributes
     */
    private array $atts = array();

    /**
     * Sets up shortcode.
     */
    public function setup() {
        add_shortcode( 'bbp-topic-index-extended', array( $this, 'shortcode' ) );

    }

    /**
     * Extended bbPress topic index shortcode.
     *
     * @param array $atts Attributes.
     * @param string $content Content.
     *
     * @return string
     */
    public function shortcode( $atts = array(), $content = null ) {


        $atts = shortcode_atts( array(
            'author' => bp_displayed_user_id(),
        ), $atts );

        $this->atts = $atts;
        if ( ! function_exists( 'bbpress' ) ) {
            return '';
        }

        $bbp_shortcodes = bbpress()->shortcodes;

        // Bail if shortcodes are unset somehow
        if ( ! is_a( $bbp_shortcodes, 'BBP_Shortcodes' ) ) {
            return '';
        }

        $this->enable_pagination_filter();
        // hook our author filter.
        if ( ! bbp_is_topic_archive() ) {
            add_filter( 'bbp_before_has_topics_parse_args', array( $this, 'update_query' ), 200 );
        }

        if ( ! is_callable( array( $bbp_shortcodes, 'display_topic_index' ) ) ) {
            return '';
        }

        //$this->disable_pagination_filter();

        return $bbp_shortcodes->display_topic_index();
    }


    /**
     * Updates bbPress topic query
     *
     * @param array $args args.
     *
     * @return array
     */
    public function update_query( $args = array() ) {

        if ( ! empty( $this->atts['author'] ) ) {
            $args['author'] = $this->atts['author'];
            unset( $this->atts['author'] );
        }

        $args['posts_per_page'] = 1;
        return $args;
    }

    /**
     * Adds pagination base url filter for the topic index.
     */
    public function enable_pagination_filter() {
        add_filter( 'bbp_get_topics_pagination_base', array( $this, 'filter_pagination_bae_url' ), 200 );
    }

    /**
     * Disables the pagination base url filter for the topic list.
     */
    public function disable_pagination_filter() {
        remove_filter( 'bbp_get_topics_pagination_base', array( $this, 'filter_pagination_bae_url' ), 200 );
    }

    public function filter_pagination_bae_url( $base_url ) {
        $base_url = trailingslashit( bp_displayed_user_domain() ) . "forums/mes-discussions/";

        return $base_url . user_trailingslashit( bbp_get_paged_slug() . '/%#%/' );
    }
}

( new BBP_Extended_Shortcode() )->setup();