<?php
/**
 * Core class for Plugin Groups.
 *
 * @package plugin_groups
 */

namespace Plugin_Groups;

/**
 * Rest Class.
 */
class Rest {

	/**
	 * The single instance of the class.
	 *
	 * @var Plugin_Groups
	 */
	protected $plugin_groups = null;

	/**
	 * Initiate the bulk_actions object.
	 *
	 * @param Plugin_Groups $plugin_groups The instance of the main plugin.
	 */
	public function __construct( Plugin_Groups $plugin_groups ) {

		$this->plugin_groups = $plugin_groups;
		// Start hooks.
		$this->setup_hooks();
	}

	/**
	 * Setup and register WordPress hooks.
	 */
	protected function setup_hooks() {

		add_action( 'rest_api_init', array( $this, 'register_routes' ) );
	}

	/**
	 * Register REST Endpoint for saving config.
	 */
	public function register_routes() {

		register_rest_route(
			Plugin_Groups::$slug,
			'save',
			array(
				'methods'             => \WP_REST_Server::CREATABLE,
				'args'                => array(),
				'callback'            => array( $this, 'rest_save_config' ),
				'permission_callback' => function( \WP_REST_Request $request ) {

					if ( is_multisite() ) {
						$data = $request->get_json_params();
						$can  = $this->plugin_groups->can_manage_site_config( $data['siteID'] ?? get_current_blog_id() );
					} else {
						$can = current_user_can( 'manage_options' );
					}

					return $can;
				},
			)
		);

		register_rest_route(
			Plugin_Groups::$slug,
			'load',
			array(
				'methods'             => \WP_REST_Server::READABLE,
				'args'                => array(),
				'callback'            => array( $this, 'rest_load_config' ),
				'permission_callback' => function( \WP_REST_Request $request ) {

					$id = $request->get_param( 'siteID' );

					return $this->plugin_groups->can_manage_site_config( $id );
				},
			)
		);

		register_rest_route(
			Plugin_Groups::$slug,
			'add',
			array(
				'methods'             => \WP_REST_Server::CREATABLE,
				'args'                => array(),
				'callback'            => array( $this, 'rest_add_to_group' ),
				'permission_callback' => function( \WP_REST_Request $request ) {

					if ( is_multisite() ) {
						$data = $request->get_json_params();
						$can  = $this->plugin_groups->can_manage_site_config( $data['siteID'] ?? get_current_blog_id() );
					} else {
						$can = current_user_can( 'manage_options' );
					}

					return $can;
				},
			)
		);
	}

	/**
	 * Endpoint to allow adding to a group.
	 *
	 * @param \WP_REST_Request $request The original request.
	 *
	 * @return \WP_Error|\WP_HTTP_Response|\WP_REST_Response
	 */
	public function rest_add_to_group( \WP_REST_Request $request ) {

		$data = $request->get_json_params();

		wp_parse_str( wp_parse_url( $data['url'], PHP_URL_QUERY ), $query );

		$return = array(
			'success' => $this->plugin_groups->add_to_group( $data['id'], array( $query['plugin'] ) ),
		);

		return rest_ensure_response( $return );
	}

	/**
	 * Load a config for a specific site.
	 *
	 * @param \WP_REST_Request $request
	 *
	 * @return \WP_Error|\WP_HTTP_Response|\WP_REST_Response
	 */
	public function rest_load_config( \WP_REST_Request $request ) {

		$id   = $request->get_param( 'siteID' );
		$json = $this->plugin_groups->build_config_object( $id );

		return rest_ensure_response( json_decode( $json ) );
	}

	/**
	 * Save endpoint.
	 *
	 * @param \WP_REST_Request $request The request.
	 *
	 * @return \WP_Error|\WP_HTTP_Response|\WP_REST_Response
	 */
	public function rest_save_config( \WP_REST_Request $request ) {

		$data    = $request->get_json_params();
		$site_id = get_current_blog_id();
		if ( is_multisite() ) {
			if ( ! empty( $data['siteID'] ) ) {
				$site_id = (int) $data['siteID'];
				unset( $data['siteID'] );
			}
			if ( isset( $data['sitesEnabled'] ) ) {
				// Ensure we have the same types.
				$data['sitesEnabled'] = array_map( 'intval', $data['sitesEnabled'] );
				$main_site_id         = get_main_site_id();
				$this->plugin_groups->save_sites_enabled( $data['sitesEnabled'] );

				if ( $main_site_id !== $site_id ) {
					unset( $data['sitesEnabled'] );
				}
			}
		}

		$config = wp_parse_args( $data, $this->plugin_groups->load_config( $site_id ) );
		$this->plugin_groups->set_config( $config, $site_id );
		$success = $this->plugin_groups->save_config( $site_id );

		return rest_ensure_response( array( 'success' => $success ) );
	}
}