<?php
/**
 * Addifect Studio Client REST API - Posts Endpoint.
 *
 * Handles the retrieval of custom post types and pages
 * used by the Addifect studio client.
 *
 * @package Addifect
 * @version 1.0.2
 */

defined( 'ABSPATH' ) || exit;

add_action(
	'rest_api_init',
	function () {
		register_rest_route(
			'addifect-client/v1',
			'/load-posts',
			array(
				'methods'             => 'GET',
				'callback'            => 'addifect_get_custom_posts',
				'permission_callback' => 'addifect_can_view_post_type',
				'args'                => array(
					'post_type' => array(
						'required'          => true,
						'type'              => 'string',
						'sanitize_callback' => 'sanitize_key',
					),
				),
			)
		);
	}
);

/**
 * Retrieve custom posts for Addifect studio with additional metadata.
 *
 * Checks user permissions dynamically based on post type capabilities.
 *
 * @param WP_REST_Request $request The REST request object.
 * @return WP_REST_Response|WP_Error REST response with posts or error.
 */
function addifect_get_custom_posts( $request ) {
	$post_type = $request->get_param( 'post_type' );
	$user      = wp_get_current_user();

	$args = array(
		'post_type'      => $post_type,
		'posts_per_page' => 100,
		'post_status'    => 'publish',
		'fields'         => 'ids',
		'no_found_rows'  => true,
	);

	// Determine which capability to check based on the post type.
	$cap = ( 'addifect_design' === $post_type ) ? 'edit_others_addifect_designs' : 'edit_others_posts';

	// Apply the author filter if the user lacks the permission.
	if ( ! current_user_can( $cap ) ) {
		$args['author'] = $user->ID;
	}

	$posts = get_posts( $args );

	if ( empty( $posts ) ) {
		return new WP_REST_Response( array(), 200 );
	}

	$data = array();

	foreach ( $posts as $post_id ) {
		$thumbnail_url = get_the_post_thumbnail_url( $post_id, 'medium' );
		$title         = esc_html( get_the_title( $post_id ) );

		$data[] = array(
			'id'              => $post_id,
			'title'           => $title,
			'thumb'           => $thumbnail_url ? esc_url_raw( $thumbnail_url ) : '',
			'addifect_edited' => (bool) get_post_meta( $post_id, '_addifect_edited', true ),
		);
	}

	return new WP_REST_Response( $data, 200 );
}