vue-wp/plugins/cia-endpoints/includes/formats.php

<?php
function make_taxonomy_endpoint_for( $terms ) {
    $type_slugs = [];
    foreach ($terms as $type_slug) {
        array_push($type_slugs, $type_slug->slug);
    }
    return $type_slugs;
}


function default_post_format( $item, $include_content ) {
    $filtered = [];
    $filtered[id] = $item->ID;
    $filtered[slug] = $item->post_name;
    $filtered[type] = $item->post_type;
    $filtered[title] = $item->post_title;
    $filtered[excerpt] = $item->post_excerpt;
    $filtered[date] = $item->post_date;
    
    if($include_content) {
        $content = $item->post_content;
        $content = apply_filters('the_content', $content);
        $filtered[content] = wp_specialchars_decode($content);
    }

    if(!$filtered[excerpt]) {
        $excerpt = get_the_excerpt($item);
        $filtered[excerpt] = wp_specialchars_decode($excerpt);
    }

    $filtered[featured] = get_the_post_thumbnail_url($item);
    if(!$filtered[featured]) {
        $thumbnailId = get_post_meta( $item->ID, '_thumbnail_id', true );
        $filtered[featured] = get_post($thumbnailId)->guid;
    }

    $filtered[thumb] = get_the_post_thumbnail_url($item, 'medium');
    if(!$filtered[thumb]) {
        $thumbnailId = get_post_meta( $item->ID, '_thumbnail_id', true );
        $filtered[thumb] = get_post($thumbnailId)->guid;
    }

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

    // Materials + type endpoints
    $posts_with_type = ['artist', 'exhibition', 'event', 'short', 'technique', 'guide', 'object', 'publication' ];
    if( in_array($item->post_type, $posts_with_type) ) {
        $filtered[materials] = make_taxonomy_endpoint_for(get_the_terms( $item, 'material'));
        $filtered[subtypes] = make_taxonomy_endpoint_for(get_the_terms( $item, $item->post_type . '_type' ));
    }

    // Custom fields endpoint
    if($item->post_type === 'episode' && $include_content) $filtered[credits] = get_post_meta( $item->ID, 'credits', true );

    if($item->post_type === 'artist') $filtered[sortname] = get_post_meta( $item->ID, 'artist-sort-name', true );

    $posts_with_date = ['exhibition', 'event'];
    if( in_array($item->post_type, $posts_with_date) ) {
        $key_prefix = $item->post_type;
        $key_suffix = 'time';
        // Exhibition meta key is very old so we change it back to exhibit
        if($item->post_type == 'exhibition') { 
            $key_prefix = 'exhibit';
            $key_suffix = 'date';
        }
        $filtered[start] = get_post_meta($item->ID, $key_prefix . '-start-' . $key_suffix, true);
        $filtered[end] = get_post_meta($item->ID, $key_prefix . '-end-' . $key_suffix, true);
        $filtered[current] = time() <= (int)$filtered[end] && time() >= (int)$filtered[start];
    }

    // Post categories and tags (store just the slugs)
    if($item->post_type === 'post') {
        $filtered[categories] = make_taxonomy_endpoint_for(get_the_terms( $item, 'category' ));
        // $filtered[tags] = make_taxonomy_endpoint_for(get_the_terms( $item, 'post_tag' ));
    }

    if($item->related_episode) {
        $filtered[related_episode] = strtolower($item->related_episode);
    }

    return $filtered;
}

function minimal_post_format( $item ) {
    $filtered = [];
    $filtered[id] = $item->ID;
    $filtered[slug] = $item->post_name;
    $filtered[type] = $item->post_type;
    $filtered[title] = $item->post_title;
    
    $filtered[thumb] = get_the_post_thumbnail_url($item, 'medium');
    if(!$filtered[thumb]) {
        $thumbnailId = get_post_meta( $item->ID, '_thumbnail_id', true );
        $filtered[thumb] = get_post($thumbnailId)->guid;
    }
    
    // Always include a small excerpt for artists
    // because they appear on the episode page
    $posts_with_excerpt = ['artist'];
    if( in_array($item->post_type, $posts_with_excerpt) ) {
        $excerpt = get_the_excerpt($item);
        $filtered[excerpt] = wp_specialchars_decode($excerpt);
    }

    // Always include a date for date based
    $posts_with_date = ['exhbition', 'event'];
    if( in_array($item->post_type, $posts_with_date) ) {
        $filtered[start] = get_post_meta($item->ID, $item->post_type . '-start-time', true);
        $filtered[end] = get_post_meta($item->ID, $item->post_type . '-end-time', true);
        $filtered[current] = time() <= (int)$filtered[end] && time() >= (int)$filtered[start];
    }

    return $filtered;
}

?>