MCP Adapter Example Feb 2026

class-summit-abilities.php

<?php
/**
 * Summit abilities for the WordPress Abilities API.
 *
 * @package Summit
 * @author  Michael Mizner
 * @license GNU General Public License v3
 * @link    https://logocentric.net/
 */

class Summit_Abilities {
	/**
	 * Bootstrap hooks.
	 *
	 * @since 1.0.0
	 *
	 * @return void
	 */
	public static function init() {
		add_action( 'wp_abilities_api_categories_init', array( __CLASS__, 'register_categories' ) );
		add_action( 'wp_abilities_api_init', array( __CLASS__, 'register_abilities' ) );
	}

	/**
	 * Register ability categories.
	 *
	 * @since 1.0.0
	 *
	 * @return void
	 */
	public static function register_categories() {
		wp_register_ability_category(
			'summit-read',
			array(
				'label'       => __( 'Summit Read', 'summit' ),
				'description' => __( 'Read-only abilities for Summit event data.', 'summit' ),
			)
		);

		wp_register_ability_category(
			'summit-manage',
			array(
				'label'       => __( 'Summit Manage', 'summit' ),
				'description' => __( 'Create, update, and delete Summit data.', 'summit' ),
			)
		);
	}

	/**
	 * Register abilities.
	 *
	 * @since 1.0.0
	 *
	 * @return void
	 */
	public static function register_abilities() {
		wp_register_ability(
			'summit/get-event-info',
			array(
				'label'               => __( 'Get Event Info', 'summit' ),
				'description'         => __( 'Retrieves global Summit event settings.', 'summit' ),
				'category'            => 'summit-read',
				'output_schema'       => array(
					'type'       => 'object',
					'properties' => array(
						'event_name'    => array( 'type' => 'string' ),
						'event_tagline' => array( 'type' => 'string' ),
						'event_dates'   => array( 'type' => 'string' ),
						'venue_name'    => array( 'type' => 'string' ),
						'venue_address' => array( 'type' => 'string' ),
						'venue_url'     => array( 'type' => 'string' ),
					),
				),
				'execute_callback'    => array( __CLASS__, 'get_event_info' ),
				'permission_callback' => '__return_true',
				'meta'                => array(
					'mcp'         => array( 'public' => true ),
					'annotations' => array( 'readonly' => true ),
				),
			)
		);

		wp_register_ability(
			'summit/update-event-info',
			array(
				'label'               => __( 'Update Event Info', 'summit' ),
				'description'         => __( 'Updates global Summit event settings.', 'summit' ),
				'category'            => 'summit-manage',
				'input_schema'        => array(
					'type'                 => 'object',
					'properties'           => array(
						'event_name'    => array( 'type' => 'string' ),
						'event_tagline' => array( 'type' => 'string' ),
						'event_dates'   => array( 'type' => 'string' ),
						'venue_name'    => array( 'type' => 'string' ),
						'venue_address' => array( 'type' => 'string' ),
						'venue_url'     => array( 'type' => 'string' ),
					),
					'additionalProperties' => false,
				),
				'output_schema'       => array(
					'type'       => 'object',
					'properties' => array(
						'success' => array( 'type' => 'boolean' ),
						'updated' => array( 'type' => 'array' ),
					),
				),
				'execute_callback'    => array( __CLASS__, 'update_event_info' ),
				'permission_callback' => array( __CLASS__, 'can_manage_options' ),
				'meta'                => array(
					'mcp'         => array( 'public' => true ),
					'annotations' => array( 'destructive' => false, 'idempotent' => true ),
				),
			)
		);

		wp_register_ability(
			'summit/get-speakers',
			array(
				'label'               => __( 'Get Speakers', 'summit' ),
				'description'         => __( 'Retrieves Summit speakers with role and thumbnail.', 'summit' ),
				'category'            => 'summit-read',
				'input_schema'        => array(
					'type'                 => 'object',
					'properties'           => array(
						'limit'   => array( 'type' => 'integer', 'default' => 20 ),
						'orderby' => array( 'type' => 'string', 'default' => 'menu_order' ),
					),
					'additionalProperties' => false,
				),
				'output_schema'       => array(
					'type'  => 'array',
					'items' => array(
						'type'       => 'object',
						'properties' => array(
							'id'        => array( 'type' => 'integer' ),
							'name'      => array( 'type' => 'string' ),
							'role'      => array( 'type' => 'string' ),
							'slug'      => array( 'type' => 'string' ),
							'url'       => array( 'type' => 'string' ),
							'thumbnail' => array( 'type' => 'string' ),
						),
					),
				),
				'execute_callback'    => array( __CLASS__, 'get_speakers' ),
				'permission_callback' => '__return_true',
				'meta'                => array(
					'mcp'         => array( 'public' => true ),
					'annotations' => array( 'readonly' => true ),
				),
			)
		);

		wp_register_ability(
			'summit/get-speaker',
			array(
				'label'               => __( 'Get Speaker', 'summit' ),
				'description'         => __( 'Retrieves a speaker with bio, social links, and role.', 'summit' ),
				'category'            => 'summit-read',
				'input_schema'        => array(
					'type'                 => 'object',
					'properties'           => array(
						'id'   => array( 'type' => 'integer' ),
						'slug' => array( 'type' => 'string' ),
					),
					'additionalProperties' => false,
				),
				'output_schema'       => array(
					'type'       => 'object',
					'properties' => array(
						'id'           => array( 'type' => 'integer' ),
						'name'         => array( 'type' => 'string' ),
						'role'         => array( 'type' => 'string' ),
						'bio'          => array( 'type' => 'string' ),
						'social_links' => array( 'type' => 'array' ),
						'accordions'   => array( 'type' => 'array' ),
						'thumbnail'    => array( 'type' => 'string' ),
						'url'          => array( 'type' => 'string' ),
					),
				),
				'execute_callback'    => array( __CLASS__, 'get_speaker' ),
				'permission_callback' => '__return_true',
				'meta'                => array(
					'mcp'         => array( 'public' => true ),
					'annotations' => array( 'readonly' => true ),
				),
			)
		);

		wp_register_ability(
			'summit/create-speaker',
			array(
				'label'               => __( 'Create Speaker', 'summit' ),
				'description'         => __( 'Creates a new Summit speaker post.', 'summit' ),
				'category'            => 'summit-manage',
				'input_schema'        => array(
					'type'                 => 'object',
					'properties'           => array(
						'name'         => array( 'type' => 'string' ),
						'role'         => array( 'type' => 'string' ),
						'bio'          => array( 'type' => 'string' ),
						'social_links' => array( 'type' => 'array' ),
						'accordions'   => array( 'type' => 'array' ),
					),
					'required'             => array( 'name' ),
					'additionalProperties' => false,
				),
				'output_schema'       => array(
					'type'       => 'object',
					'properties' => array(
						'success' => array( 'type' => 'boolean' ),
						'id'      => array( 'type' => 'integer' ),
						'url'     => array( 'type' => 'string' ),
					),
				),
				'execute_callback'    => array( __CLASS__, 'create_speaker' ),
				'permission_callback' => array( __CLASS__, 'can_edit_posts' ),
				'meta'                => array(
					'mcp' => array( 'public' => true ),
				),
			)
		);

		wp_register_ability(
			'summit/update-speaker',
			array(
				'label'               => __( 'Update Speaker', 'summit' ),
				'description'         => __( 'Updates an existing Summit speaker.', 'summit' ),
				'category'            => 'summit-manage',
				'input_schema'        => array(
					'type'                 => 'object',
					'properties'           => array(
						'id'           => array( 'type' => 'integer' ),
						'name'         => array( 'type' => 'string' ),
						'role'         => array( 'type' => 'string' ),
						'bio'          => array( 'type' => 'string' ),
						'social_links' => array( 'type' => 'array' ),
						'accordions'   => array( 'type' => 'array' ),
					),
					'required'             => array( 'id' ),
					'additionalProperties' => false,
				),
				'output_schema'       => array(
					'type'       => 'object',
					'properties' => array(
						'success' => array( 'type' => 'boolean' ),
					),
				),
				'execute_callback'    => array( __CLASS__, 'update_speaker' ),
				'permission_callback' => array( __CLASS__, 'can_edit_posts' ),
				'meta'                => array(
					'mcp' => array( 'public' => true ),
				),
			)
		);

		wp_register_ability(
			'summit/delete-speaker',
			array(
				'label'               => __( 'Delete Speaker', 'summit' ),
				'description'         => __( 'Deletes a Summit speaker.', 'summit' ),
				'category'            => 'summit-manage',
				'input_schema'        => array(
					'type'                 => 'object',
					'properties'           => array(
						'id' => array( 'type' => 'integer' ),
					),
					'required'             => array( 'id' ),
					'additionalProperties' => false,
				),
				'output_schema'       => array(
					'type'       => 'object',
					'properties' => array(
						'success' => array( 'type' => 'boolean' ),
					),
				),
				'execute_callback'    => array( __CLASS__, 'delete_speaker' ),
				'permission_callback' => array( __CLASS__, 'can_delete_posts' ),
				'meta'                => array(
					'mcp'         => array( 'public' => true ),
					'annotations' => array( 'destructive' => true ),
				),
			)
		);

		wp_register_ability(
			'summit/get-schedule',
			array(
				'label'               => __( 'Get Schedule', 'summit' ),
				'description'         => __( 'Parses the schedule template part and returns structured data.', 'summit' ),
				'category'            => 'summit-read',
				'output_schema'       => array(
					'type'  => 'array',
					'items' => array(
						'type'       => 'object',
						'properties' => array(
							'day'     => array( 'type' => 'string' ),
							'date'    => array( 'type' => 'string' ),
							'entries' => array( 'type' => 'array' ),
						),
					),
				),
				'execute_callback'    => array( __CLASS__, 'get_schedule' ),
				'permission_callback' => '__return_true',
				'meta'                => array(
					'mcp'         => array( 'public' => true ),
					'annotations' => array( 'readonly' => true ),
				),
			)
		);
	}

	/**
	 * Check manage options capability.
	 *
	 * @since 1.0.0
	 *
	 * @return bool
	 */
	public static function can_manage_options() {
		return current_user_can( 'manage_options' );
	}

	/**
	 * Check edit posts capability.
	 *
	 * @since 1.0.0
	 *
	 * @return bool
	 */
	public static function can_edit_posts() {
		return current_user_can( 'edit_posts' );
	}

	/**
	 * Check delete posts capability.
	 *
	 * @since 1.0.0
	 *
	 * @return bool
	 */
	public static function can_delete_posts() {
		return current_user_can( 'delete_posts' );
	}

	/**
	 * Get event info options.
	 *
	 * @since 1.0.0
	 *
	 * @return array
	 */
	public static function get_event_info() {
		return array(
			'event_name'    => get_option( 'summit_event_name', '' ),
			'event_tagline' => get_option( 'summit_event_tagline', '' ),
			'event_dates'   => get_option( 'summit_event_dates', '' ),
			'venue_name'    => get_option( 'summit_venue_name', '' ),
			'venue_address' => get_option( 'summit_venue_address', '' ),
			'venue_url'     => get_option( 'summit_venue_url', '' ),
		);
	}

	/**
	 * Update event info options.
	 *
	 * @since 1.0.0
	 *
	 * @param array $input Input values.
	 * @return array
	 */
	public static function update_event_info( $input ) {
		$allowed = array(
			'event_name'    => 'summit_event_name',
			'event_tagline' => 'summit_event_tagline',
			'event_dates'   => 'summit_event_dates',
			'venue_name'    => 'summit_venue_name',
			'venue_address' => 'summit_venue_address',
			'venue_url'     => 'summit_venue_url',
		);

		$updated = array();

		foreach ( $allowed as $key => $option ) {
			if ( isset( $input[ $key ] ) ) {
				$updated[ $key ] = $input[ $key ];
				update_option( $option, sanitize_text_field( $input[ $key ] ) );
			}
		}

		return array(
			'success' => true,
			'updated' => array_keys( $updated ),
		);
	}

	/**
	 * Get speakers list.
	 *
	 * @since 1.0.0
	 *
	 * @param array|null $input Input args.
	 * @return array
	 */
	public static function get_speakers( $input = null ) {
		if ( ! is_array( $input ) ) {
			$input = array();
		}

		$args = array(
			'post_type'      => 'summit_speaker',
			'posts_per_page' => isset( $input['limit'] ) ? absint( $input['limit'] ) : 20,
			'orderby'        => isset( $input['orderby'] ) ? sanitize_key( $input['orderby'] ) : 'menu_order',
			'order'          => 'ASC',
			'post_status'    => 'publish',
		);

		$posts = get_posts( $args );
		$results = array();

		foreach ( $posts as $post ) {
			$results[] = array(
				'id'        => $post->ID,
				'name'      => $post->post_title,
				'role'      => get_post_meta( $post->ID, '_summit_speaker_role', true ),
				'slug'      => $post->post_name,
				'url'       => get_permalink( $post->ID ),
				'thumbnail' => get_the_post_thumbnail_url( $post->ID, 'full' ),
			);
		}

		return $results;
	}

	/**
	 * Get a single speaker.
	 *
	 * @since 1.0.0
	 *
	 * @param array $input Input args.
	 * @return array|WP_Error
	 */
	public static function get_speaker( $input ) {
		$post = null;

		if ( ! empty( $input['id'] ) ) {
			$post = get_post( absint( $input['id'] ) );
		} elseif ( ! empty( $input['slug'] ) ) {
			$post = get_page_by_path( sanitize_title( $input['slug'] ), OBJECT, 'summit_speaker' );
		}

		if ( ! $post instanceof WP_Post ) {
			return new WP_Error( 'summit_speaker_not_found', __( 'Speaker not found.', 'summit' ) );
		}

		$data = self::parse_speaker_content( $post->post_content );

		return array(
			'id'           => $post->ID,
			'name'         => $post->post_title,
			'role'         => get_post_meta( $post->ID, '_summit_speaker_role', true ),
			'bio'          => $data['bio'],
			'social_links' => $data['social_links'],
			'accordions'   => $data['accordions'],
			'thumbnail'    => get_the_post_thumbnail_url( $post->ID, 'full' ),
			'url'          => get_permalink( $post->ID ),
		);
	}

	/**
	 * Create a speaker post.
	 *
	 * @since 1.0.0
	 *
	 * @param array $input Input values.
	 * @return array|WP_Error
	 */
	public static function create_speaker( $input ) {
		$content = self::build_speaker_content( $input );

		$post_id = wp_insert_post(
			array(
				'post_type'    => 'summit_speaker',
				'post_status'  => 'publish',
				'post_title'   => isset( $input['name'] ) ? sanitize_text_field( $input['name'] ) : '',
				'post_content' => $content,
			)
		);

		if ( is_wp_error( $post_id ) ) {
			return $post_id;
		}

		if ( ! empty( $input['role'] ) ) {
			update_post_meta( $post_id, '_summit_speaker_role', sanitize_text_field( $input['role'] ) );
		}

		return array(
			'success' => true,
			'id'      => $post_id,
			'url'     => get_permalink( $post_id ),
		);
	}

	/**
	 * Update a speaker post.
	 *
	 * @since 1.0.0
	 *
	 * @param array $input Input values.
	 * @return array|WP_Error
	 */
	public static function update_speaker( $input ) {
		$post = get_post( absint( $input['id'] ) );

		if ( ! $post instanceof WP_Post ) {
			return new WP_Error( 'summit_speaker_not_found', __( 'Speaker not found.', 'summit' ) );
		}

		$update = array(
			'ID' => $post->ID,
		);

		if ( ! empty( $input['name'] ) ) {
			$update['post_title'] = sanitize_text_field( $input['name'] );
		}

		if ( ! empty( $input['role'] ) ) {
			update_post_meta( $post->ID, '_summit_speaker_role', sanitize_text_field( $input['role'] ) );
		}

		if ( isset( $input['bio'] ) || isset( $input['social_links'] ) || isset( $input['accordions'] ) ) {
			$current = self::parse_speaker_content( $post->post_content );
			$merged = array(
				'bio'          => isset( $input['bio'] ) ? $input['bio'] : $current['bio'],
				'social_links' => isset( $input['social_links'] ) ? $input['social_links'] : $current['social_links'],
				'accordions'   => isset( $input['accordions'] ) ? $input['accordions'] : $current['accordions'],
			);

			$update['post_content'] = self::build_speaker_content( $merged );
		}

		$result = wp_update_post( $update, true );

		if ( is_wp_error( $result ) ) {
			return $result;
		}

		return array( 'success' => true );
	}

	/**
	 * Delete a speaker.
	 *
	 * @since 1.0.0
	 *
	 * @param array $input Input values.
	 * @return array|WP_Error
	 */
	public static function delete_speaker( $input ) {
		$post_id = absint( $input['id'] );
		$result = wp_delete_post( $post_id, true );

		if ( ! $result ) {
			return new WP_Error( 'summit_speaker_delete_failed', __( 'Unable to delete speaker.', 'summit' ) );
		}

		return array( 'success' => true );
	}

	/**
	 * Parse speaker content blocks.
	 *
	 * @since 1.0.0
	 *
	 * @param string $content Post content.
	 * @return array
	 */
	public static function parse_speaker_content( $content ) {
		$blocks = parse_blocks( $content );
		$bio = '';
		$social_links = array();
		$accordions = array();

		foreach ( $blocks as $block ) {
			if ( 'core/group' === $block['blockName'] && ! empty( $block['attrs']['className'] ) && 'speaker-bio' === $block['attrs']['className'] ) {
				foreach ( $block['innerBlocks'] as $inner_block ) {
					if ( 'core/paragraph' === $inner_block['blockName'] ) {
						$bio = self::block_text( $inner_block );
						break;
					}
				}
			}

			if ( 'core/social-links' === $block['blockName'] ) {
				foreach ( $block['innerBlocks'] as $social_block ) {
					if ( 'core/social-link' === $social_block['blockName'] ) {
						$social_links[] = array(
							'service' => isset( $social_block['attrs']['service'] ) ? $social_block['attrs']['service'] : '',
							'url'     => isset( $social_block['attrs']['url'] ) ? $social_block['attrs']['url'] : '',
						);
					}
				}
			}

			if ( 'core/details' === $block['blockName'] ) {
				$accordions[] = array(
					'summary' => isset( $block['attrs']['summary'] ) ? $block['attrs']['summary'] : '',
					'content' => self::block_text( $block ),
				);
			}
		}

		return array(
			'bio'          => $bio,
			'social_links' => $social_links,
			'accordions'   => $accordions,
		);
	}

	/**
	 * Build speaker block content.
	 *
	 * @since 1.0.0
	 *
	 * @param array $input Content pieces.
	 * @return string
	 */
	public static function build_speaker_content( $input ) {
		$bio = isset( $input['bio'] ) ? $input['bio'] : '';
		$social_links = isset( $input['social_links'] ) ? $input['social_links'] : array();
		$accordions = isset( $input['accordions'] ) ? $input['accordions'] : array();
		$bio_text = esc_html( $bio );
		$bio_html = '<p>' . $bio_text . '</p>';
		$group_inner_html = '<div class="wp-block-group speaker-bio"></div>';
		$social_list_class = 'wp-block-social-links is-style-logos-only';
		$social_inner_html = '<ul class="' . $social_list_class . '"></ul>';
		$heading_text = esc_html__( 'More About This Speaker', 'summit' );
		$heading_html = '<h2>' . $heading_text . '</h2>';

		$blocks = array(
			array(
				'blockName'    => 'core/group',
				'attrs'        => array( 'className' => 'speaker-bio' ),
				'innerBlocks'  => array(
					array(
						'blockName'   => 'core/paragraph',
						'attrs'       => array(),
						'innerBlocks' => array(),
						'innerHTML'   => $bio_html,
						'innerContent' => array( $bio_html ),
					),
				),
				'innerHTML'   => $group_inner_html,
				'innerContent' => array(
					'<div class="wp-block-group speaker-bio">',
					null,
					'</div>',
				),
			),
			array(
				'blockName'   => 'core/social-links',
				'attrs'       => array( 'className' => 'is-style-logos-only' ),
				'innerBlocks' => self::build_social_blocks( $social_links ),
				'innerHTML'   => $social_inner_html,
				'innerContent' => array(
					'<ul class="' . $social_list_class . '">',
					null,
					'</ul>',
				),
			),
			array(
				'blockName'   => 'core/heading',
				'attrs'       => array(
					'level'   => 2,
					'content' => $heading_text,
				),
				'innerBlocks' => array(),
				'innerHTML'   => $heading_html,
				'innerContent' => array( $heading_html ),
			),
		);

		foreach ( self::normalize_accordions( $accordions ) as $accordion ) {
			$summary_text = esc_html( $accordion['summary'] );
			$summary_html = '<details><summary>' . $summary_text . '</summary></details>';
			$summary_content = '<details><summary>' . $summary_text . '</summary>';
			$accordion_content = '<p>' . esc_html( $accordion['content'] ) . '</p>';
			$blocks[] = array(
				'blockName'   => 'core/details',
				'attrs'       => array( 'summary' => $accordion['summary'] ),
				'innerBlocks' => array(
					array(
						'blockName'   => 'core/paragraph',
						'attrs'       => array(),
						'innerBlocks' => array(),
						'innerHTML'   => $accordion_content,
						'innerContent' => array( $accordion_content ),
					),
				),
				'innerHTML'   => $summary_html,
				'innerContent' => array(
					$summary_content,
					null,
					'</details>',
				),
			);
		}

		return serialize_blocks( $blocks );
	}

	/**
	 * Build social link blocks.
	 *
	 * @since 1.0.0
	 *
	 * @param array $links Social links.
	 * @return array
	 */
	public static function build_social_blocks( $links ) {
		$blocks = array();

		if ( empty( $links ) ) {
			$links = array(
				array( 'service' => 'x' ),
				array( 'service' => 'youtube' ),
				array( 'service' => 'instagram' ),
				array( 'service' => 'facebook' ),
			);
		}

		foreach ( $links as $link ) {
			$attrs = array();
			if ( ! empty( $link['service'] ) ) {
				$attrs['service'] = sanitize_key( $link['service'] );
			}
			if ( ! empty( $link['url'] ) ) {
				$attrs['url'] = esc_url_raw( $link['url'] );
			}

			$blocks[] = array(
				'blockName'   => 'core/social-link',
				'attrs'       => $attrs,
				'innerBlocks' => array(),
				'innerHTML'   => '',
				'innerContent' => array(),
			);
		}

		return $blocks;
	}

	/**
	 * Normalize accordion inputs.
	 *
	 * @since 1.0.0
	 *
	 * @param array $accordions Accordion data.
	 * @return array
	 */
	public static function normalize_accordions( $accordions ) {
		if ( empty( $accordions ) ) {
			return array(
				array(
					'summary' => __( 'Books & Publications', 'summit' ),
					'content' => '',
				),
				array(
					'summary' => __( 'Speaking Topics', 'summit' ),
					'content' => '',
				),
			);
		}

		$normalized = array();
		foreach ( $accordions as $accordion ) {
			$normalized[] = array(
				'summary' => isset( $accordion['summary'] ) ? sanitize_text_field( $accordion['summary'] ) : '',
				'content' => isset( $accordion['content'] ) ? sanitize_text_field( $accordion['content'] ) : '',
			);
		}

		return $normalized;
	}

	/**
	 * Extract text from a block.
	 *
	 * @since 1.0.0
	 *
	 * @param array $block Block data.
	 * @return string
	 */
	public static function block_text( $block ) {
		if ( empty( $block['innerHTML'] ) ) {
			return '';
		}

		return trim( wp_strip_all_tags( $block['innerHTML'] ) );
	}

	/**
	 * Parse schedule template part into structured data.
	 *
	 * @since 1.0.0
	 *
	 * @return array
	 */
	public static function get_schedule() {
		$content = self::get_schedule_template_content();
		if ( '' === $content ) {
			return array();
		}

		$blocks = parse_blocks( $content );
		$days = array();

		self::extract_schedule_days( $blocks, $days );

		return $days;
	}

	/**
	 * Get schedule template part content.
	 *
	 * @since 1.0.0
	 *
	 * @return string
	 */
	public static function get_schedule_template_content() {
		$path = get_theme_file_path( 'parts/schedule.html' );
		if ( ! file_exists( $path ) ) {
			return '';
		}

		return (string) file_get_contents( $path );
	}

	/**
	 * Recursively extract schedule days.
	 *
	 * @since 1.0.0
	 *
	 * @param array $blocks Blocks array.
	 * @param array $days Days array passed by reference.
	 * @return void
	 */
	public static function extract_schedule_days( $blocks, &$days ) {
		foreach ( $blocks as $block ) {
			if ( 'core/columns' === $block['blockName'] ) {
				$day = self::parse_schedule_columns( $block );
				if ( ! empty( $day['day'] ) && ! empty( $day['date'] ) ) {
					$days[] = $day;
				}
			}

			if ( ! empty( $block['innerBlocks'] ) ) {
				self::extract_schedule_days( $block['innerBlocks'], $days );
			}
		}
	}

	/**
	 * Parse a schedule columns block.
	 *
	 * @since 1.0.0
	 *
	 * @param array $block Columns block.
	 * @return array
	 */
	public static function parse_schedule_columns( $block ) {
		$columns = isset( $block['innerBlocks'] ) ? $block['innerBlocks'] : array();
		if ( count( $columns ) < 2 ) {
			return array();
		}

		$day_column = $columns[0];
		$detail_column = $columns[1];
		$day_label = self::find_heading_text( $day_column );
		$date_label = self::find_heading_text( $detail_column );
		$entries = self::extract_schedule_entries( $detail_column );

		return array(
			'day'     => $day_label,
			'date'    => $date_label,
			'entries' => $entries,
		);
	}

	/**
	 * Find the first heading text in a block tree.
	 *
	 * @since 1.0.0
	 *
	 * @param array $block Block data.
	 * @return string
	 */
	public static function find_heading_text( $block ) {
		if ( 'core/heading' === $block['blockName'] ) {
			return self::block_text( $block );
		}

		if ( empty( $block['innerBlocks'] ) ) {
			return '';
		}

		foreach ( $block['innerBlocks'] as $inner_block ) {
			$found = self::find_heading_text( $inner_block );
			if ( '' !== $found ) {
				return $found;
			}
		}

		return '';
	}

	/**
	 * Extract schedule entries from a block tree.
	 *
	 * @since 1.0.0
	 *
	 * @param array $block Block data.
	 * @return array
	 */
	public static function extract_schedule_entries( $block ) {
		$entries = array();

		if ( 'core/group' === $block['blockName'] ) {
			$paragraphs = array();
			foreach ( $block['innerBlocks'] as $inner_block ) {
				if ( 'core/paragraph' === $inner_block['blockName'] ) {
					$paragraphs[] = self::block_text( $inner_block );
				}
			}

			if ( count( $paragraphs ) >= 2 ) {
				$entries[] = array(
					'time'        => $paragraphs[0],
					'description' => $paragraphs[1],
				);
			}
		}

		if ( ! empty( $block['innerBlocks'] ) ) {
			foreach ( $block['innerBlocks'] as $inner_block ) {
				$entries = array_merge( $entries, self::extract_schedule_entries( $inner_block ) );
			}
		}

		return $entries;
	}
}

Summit_Abilities::init();