<?php

namespace Uncanny_Automator\Integrations\Events_Manager;

use EM_Booking;
use EM_Event;

/**
 * Class ANON_EM_REGISTER
 *
 * @package Uncanny_Automator
 */
class EM_REGISTER {

	/**
	 * Integration code
	 *
	 * @var string
	 */
	public static $integration = 'EVENTSMANAGER';

	private $trigger_code;
	private $trigger_meta;

	/**
	 * Set up Automator trigger constructor.
	 */
	public function __construct() {
		$this->trigger_code = 'EVENTREGISTER';
		$this->trigger_meta = 'EMEVENTS';
		$this->define_trigger();
	}

	/**
	 * Define and register the trigger by pushing it into the Automator object
	 */
	public function define_trigger() {
		$trigger = array(
			'author'              => Automator()->get_author_name( $this->trigger_code ),
			'support_link'        => Automator()->get_author_support_link( $this->trigger_code, 'integration/events-manager/' ),
			'integration'         => self::$integration,
			'code'                => $this->trigger_code,
			/* translators: Logged-in trigger - The Events Manager */
			'sentence'            => sprintf( esc_attr_x( 'A user registers for {{an event:%1$s}}', 'Events Manager', 'uncanny-automator' ), $this->trigger_meta ),
			/* translators: Logged-in trigger - The Events Manager */
			'select_option_name'  => esc_attr_x( 'A user registers for {{an event}}', 'Events Manager', 'uncanny-automator' ),
			'action'              => 'em_bookings_added',
			'priority'            => 99,
			'accepted_args'       => 1,
			'validation_function' => array(
				$this,
				'attendee_registered_for_event',
			),
			'options_callback'    => array( $this, 'load_options' ),
		);

		Automator()->register->trigger( $trigger );
	}

	/**
	 * @return array[]
	 */
	public function load_options() {
		return Automator()->utilities->keep_order_of_options(
			array(
				'options' => array(
					// Call the helper directly — the legacy
					// Automator()->helpers->recipe->events_manager accessor is not
					// wired on the migrated integration (null), so the chain warned.
					( new \Uncanny_Automator\Events_Manager_Helpers() )->all_em_events(
						null,
						$this->trigger_meta,
						array(
							'any_option' => true,
						)
					),
				),
			)
		);
	}

	/**
	 * @param EM_Booking $em_booking_obj
	 *
	 * @return mixed
	 */
	public function attendee_registered_for_event( $em_booking_obj ) {
		$em_event_id        = $em_booking_obj->event_id;
		$user_id            = $em_booking_obj->person_id;
		$recipes            = Automator()->get->recipes_from_trigger_code( $this->trigger_code );
		$required_event     = Automator()->get->meta_from_recipes( $recipes, $this->trigger_meta );
		$matched_recipe_ids = array();

		foreach ( $recipes as $recipe_id => $recipe ) {
			foreach ( $recipe['triggers'] as $trigger ) {
				$trigger_id = $trigger['ID'];//return early for all products
				if ( isset( $required_event[ $recipe_id ][ $trigger_id ] ) ) {
					if ( absint( $required_event[ $recipe_id ][ $trigger_id ] ) === absint( $em_event_id ) || intval( '-1' ) === intval( $required_event[ $recipe_id ][ $trigger_id ] ) ) {
						$matched_recipe_ids[] = array(
							'recipe_id'  => $recipe_id,
							'trigger_id' => $trigger_id,
						);
					}
				}
			}
		}

		if ( ! empty( $matched_recipe_ids ) ) {
			foreach ( $matched_recipe_ids as $matched_recipe_id ) {
				$pass_args = array(
					'code'             => $this->trigger_code,
					'meta'             => $this->trigger_meta,
					'user_id'          => $user_id,
					'recipe_to_match'  => $matched_recipe_id['recipe_id'],
					'trigger_to_match' => $matched_recipe_id['trigger_id'],
					'ignore_post_id'   => true,
				);

				$args = Automator()->maybe_add_trigger_entry( $pass_args, false );

				if ( $args ) {
					foreach ( $args as $result ) {
						if ( true === $result['result'] ) {
							Em_Tokens::em_save_tokens( $this->trigger_meta, $result['args'], $em_booking_obj );
							Automator()->maybe_trigger_complete( $result['args'] );
						}
					}
				}
			}
		}
	}
}
