vue-wp/plugins/cia-endpoints/includes/class.make-endpoint.php

<?php
include('settings.php');
include('reformat-blocks.php');
include('related-items.php');
include('formats.php');

class Make_Endpoint_For extends WP_REST_Controller {
    private $post_type;
    function __construct($post_type) {
        $this->post_type = $post_type;
    }
    /**
     * Register the routes for the objects of the controller.
     */
    public function register_custom_route($route) {
        $version = '2';
        $namespace = 'craft/v' . $version;

        register_rest_route( $namespace, '/' . $route, [
            array(
                'methods'  => WP_REST_Server::READABLE,
                'callback' => array( $this, 'get_all_items' )
            ),
        ]);

        register_rest_route( $namespace, '/' . $route . '/(?P<id>[\d]+)', [
            array(
                'methods'  => WP_REST_Server::READABLE,
                'callback' => array( $this, 'get_single_item' )
            ),
        ]);
    }
    public function get_single_item( $request ) {
        $args = array(
            'numberposts' => 1,
            'post_type' => $this->post_type
        );

        $params = $request->get_params();
        if(intval($params['limit']) > 0) { $args['numberposts'] = intval($params['limit']); }
        if(intval($params['id']) > 0) { $args['include'] = array($params['id']); }

        return new WP_REST_Response( $this->prepare_single_item_for_response($args), 200 );
    }
    public function get_all_items( $request ) {
        $args = array(
            'numberposts' => 999999,
            'post_type' => $this->post_type,
            // Order DOES NOT WORK because you're
            // returning the posts by id - DUH
            // 'orderby' => 'date',
            // 'order' => 'DESC'
        );

        // Get parameters from request
        // /<id>?limit=<num>
        $params = $request->get_params();
        if(intval($params['limit']) > 0) { $args['numberposts'] = intval($params['limit']); }
        if(intval($params['id']) > 0) { $args['include'] = array($params['id']); }
        // !: Add order asc/desc
        // !: Add orderby

        return new WP_REST_Response( $this->prepare_all_items_for_response($args), 200 );
    }
    public function prepare_single_item_for_response( $args ) {
        $collection = array();

        // https://developer.wordpress.org/reference/functions/get_posts/
        foreach( get_posts($args) as $item ) {
            $filtered = default_post_format( $item, false );

            $filtered[galleries] = get_ids_from_gallery_block(
                parse_blocks($item->post_content)
            );

            $filtered[attached] = get_images_from_content($item->post_content);

            // For your hero URL
            $filtered[hero] = get_post_meta( $item->ID, 'hero_header', true );

            $filtered[relatedto] = p2p_related_to( $item->ID, $item->post_type );
            
            $content = $item->post_content;
            $content = apply_filters('the_content', $content);
            $filtered[content] = str_replace(']]>', ']]&gt;', $content);
            
            if($item->post_type === 'episode') $filtered[credits] = get_post_meta( $item->ID, 'credits', true );

            $collection[$item->ID] = $filtered;
        }
        wp_reset_postdata();

        return $collection;
    }
    public function prepare_all_items_for_response( $args ) {
        $collection = array();
        $alphabet_section = 'a';

        // https://developer.wordpress.org/reference/functions/get_posts/
        foreach( get_posts($args) as $item ) {
            // print_r($args);
            // print_r($item);
            $filtered = default_post_format( $item, true );

            // For your hero URL
            $filtered[hero] = get_post_meta( $item->ID, 'hero_header', true );

            // Sticky
            $filtered[sticky] = get_post_meta( $item->ID, 'is_sticky', true );

            if($item->post_type == 'page') {
                $filtered[content] = $item->post_content;
            }
            
            if($item->post_type == 'artist') {
                // This is where you add to your letter counter
            }

            array_push($collection, $filtered);
        }
        wp_reset_postdata();

        return $collection;
    }
}

?>