<?php

	use Theme\Models\Article;

	/**
	 * Article featured images
	 */
	add_action('rest_api_init', function () {
		register_rest_field('article',
			'featured_media_src',
			[
				'get_callback'    => function ($object) {
					$feat_img_array = wp_get_attachment_image_src($object['featured_media'], 'full');

					return $feat_img_array[0];
				},
				'update_callback' => NULL,
				'schema'          => NULL,
			]
		);
	});

	/**
	 * Article timestamps
	 */
	add_action('rest_api_init', function () {
		register_rest_field('article',
			'date',
			[
				'get_callback'    => function ($object) {
					return get_the_date('F j, Y', $object['id']);
				},
				'update_callback' => NULL,
				'schema'          => NULL,
			]
		);
	});

	/**
	 * Article excerpt
	 */
	add_action('rest_api_init', function () {
		register_rest_field('article',
			'excerpt',
			[
				'get_callback'    => function ($object) {
					return get_the_excerpt($object['id']);
				},
				'update_callback' => NULL,
				'schema'          => NULL,
			]
		);
	});

	/**
	 * Article categories
	 */
	add_action('rest_api_init', function () {
		register_rest_field('article',
			'categories',
			[
				'get_callback'    => function ($object) {
					return get_the_terms($object['id'], 'category');
				},
				'update_callback' => NULL,
				'schema'          => NULL,
			]
		);
	});

	/**
	 * Related articles
	 */
	add_action('rest_api_init', function () {
		register_rest_field('article',
			'related',
			[
				'get_callback'    => function ($object) {
					$terms = get_the_terms($object['id'], 'category');
					$ids   = [];

					if($terms) {
						foreach($terms as $term) {
							$ids[] = $term->term_id;
						}

						$articles = Article::getPostsRest([
							'post_type'    => 'article',
							'post__not_in' => [$object['id']], // exclude self
							'posts_per_page' => 4,
							'tax_query'    => [
								[
									'taxonomy' => 'category',
									'field'    => 'id',
									'terms'    => $ids,
								],
							],
						]);

						return $articles;
					}

					return NULL;
				},
				'update_callback' => NULL,
				'schema'          => NULL,
			]
		);
	});