vue-wp/plugins/cia-endpoints/cia-end-points.php

<?php
/**
 * Craft in America Custom Endpoints Plugin
 *
 * @since             1.0.0
 * @package           cia_endpoints
 *
 * @wordpress-plugin
 * Plugin Name:       Craft in America - API Endpoints
 * Plugin URI:
 * Description:       Plugin that adds custom rest interface
 * Version:           1.0.0
 * Author:            TOJ <john@yvvas.com>
 */

// If this file is called directly, abort.
if ( ! defined( 'WPINC' ) ) { die; }

require_once('includes/all-types.php');
require_once('includes/class.make-endpoint.php');
require_once('includes/class.make-sticky.php');
require_once('includes/class.make-sortby.php');

function _unsnake($input) {
    return str_replace('_', '-', $input);
}

function _make_sorts($post_types, $sorts_types) {
    foreach ($sorts_types as $sort) {
        $unsnaked = _unsnake($sort);
        foreach ($post_types as $type) {
            $sort_controller = new Make_Sort_By($type, $sort);
            $sort_controller->register_custom_route("$type/$unsnaked");
        }
    }
}

add_action( 'rest_api_init', function () {
    /**
     * Custom post type endpoints
     */
    $types = get_all_post_types();
    foreach($types as $type) {
        $controller = new Make_Endpoint_For($type);
        $controller->register_custom_route($type);
    }
    
    /**
     * Sticky endpoint
     */
    $sticky_controller = new Make_Sticky_Endpoint();
    $sticky_controller->register_custom_route('sticky');

    /**
     * Craft in America custom sort_types
     */
    $artist_sorts = ['by_alpha'];
    $by_alpha_types = ['artist'];
    _make_sorts($by_alpha_types, $artist_sorts);
    
    $date_sorts = ['by_past', 'by_current_and_upcoming'];
    $by_date_types = ['exhibition', 'event'];
    _make_sorts($by_date_types, $date_sorts);
    
    $episode_sorts = ['by_episode'];
    $by_episode_types = [
        'artist', 'guide', 'short'
    ];
    _make_sorts($by_episode_types, $episode_sorts);
    
    $material_sorts = ['by_material'];
    $by_material_types = [
        'artist', 'guide', 'short',
        'object', 'publication',
    ];
    _make_sorts($by_material_types, $material_sorts);
});

/**
 * Register the /wp-json/craft/v2/<custom endpoint> so it will be cached
 * Depends on: WP REST Cache
 * https://medium.com/@lodewijkm/our-headless-wordpress-journey-part-i-speeding-up-the-rest-api-aef76a898418
 */
add_filter('wp_rest_cache/allowed_endpoints', function () {
    $types = get_all_post_types();
    foreach($types as $type) {
        if ( !isset($allowed_endpoints['craft/v2']) || !in_array($type, $allowed_endpoints['craft/v2']) )
            $allowed_endpoints['craft/v2'][] = $type;
    }
    return $allowed_endpoints;
}, 10, 1);

add_filter('excerpt_length', function ($length) {
    return 30;
});