<?php
/**
 * Coordinator for the tracking module.
 *
 * @package Careback
 */

namespace Careback;

defined( 'ABSPATH' ) || exit;

/**
 * The one line Plugin::init() has to know about.
 *
 * The admin screen is always registered so the module can be switched on from
 * inside WordPress; everything customer-facing stays behind the flag, so an
 * install that never enables it behaves exactly as it did before the module
 * existed.
 */
class Track_Module {

	private $settings;
	private $requests;
	private $events;
	private $security;

	public function __construct( Settings $settings, Requests_Repository $requests, Events_Repository $events, Security $security ) {
		$this->settings = $settings;
		$this->requests = $requests;
		$this->events   = $events;
		$this->security = $security;
	}

	public function init() {
		( new Track_Admin( $this->settings ) )->init();

		// The panel on the order screen is what writes the parcel number, so it
		// is registered whether or not the customer page is switched on: an
		// operator recording parcels before the page goes live is the normal
		// order of things, not an edge case.
		if ( is_admin() ) {
			( new Track_Order_Box( $this->settings ) )->init();
		}

		$timeline = new Track_Timeline( $this->settings, $this->requests );
		$rest     = new Track_Rest( $this->settings, $this->events, $this->security, $timeline );

		// The cache headers guard the whole namespace, including the returns
		// portal's own lookup, so they are attached whether or not this module is
		// switched on. A privacy control must not depend on an unrelated flag.
		add_filter( 'rest_post_dispatch', array( $rest, 'no_store' ), 10, 3 );

		// The shortcode is registered unconditionally and returns an empty string
		// while the module is off. Registering it behind the flag would print the
		// literal [careback_tracking] on a live page the moment somebody switched the
		// module off — which is exactly when nobody is watching the page.
		( new Track_Frontend( $this->settings, $this->security ) )->init();

		if ( empty( $this->settings->get( 'track_enabled' ) ) ) {
			return;
		}

		$rest->init();
	}
}