<?php
/**
 * Class WPDesk_Paczkomaty_Select_Machines_Via_Ajax
 *
 * @package WooCommerce InPost
 */

use FS\InPost\PickupPoints\PickupPointsManager;

/**
 * Select Machines via AJAX.
 */
class WPDesk_Paczkomaty_Select_Machines_Via_Ajax {
	/**
	 * .
	 *
	 * @var int
	 */
	const MIN_LENGTH                          = 3;
	const AJAX_ACTION = 'paczkomaty_search_machines_via_ajax';

	/**
	 *  .
	 *
	 * @var WPDesk_Paczkomaty $plugin
	 */
	protected $plugin = null;

	/**
	 * .
	 *
	 * @var array
	 */
	private $machines;

	/**
	 * .
	 *
	 * @var WPDesk_Paczkomaty_Ajax_Request
	 */
	private $requests;

	/**
	 * .
	 *
	 * @var string
	 */
	private $nonce_action_name;

	/**
	 * @var PickupPointsManager
	 */
	private $pickup_points_manager;

	/**
	 * WPDesk_Paczkomaty_Select_Machines_Via_Ajax constructor.
	 *
	 * @param WPDesk_Paczkomaty $plugin            .
	 * @param string            $nonce_action_name .
	 */
	public function __construct( $plugin, $nonce_action_name, PickupPointsManager $pickup_points_manager ) {
		$this->plugin                = $plugin;
		$this->nonce_action_name     = $nonce_action_name;
		$this->pickup_points_manager = $pickup_points_manager;
	}

	/**
	 * Hooks.
	 */
	public function hooks() {
		add_action(
			'wp_ajax_' . self::AJAX_ACTION,
			[
				$this,
				'wp_ajax_paczkomaty_search_machines_via_ajax',
			]
		);

		add_action(
			'wp_ajax_nopriv_' . self::AJAX_ACTION,
			[
				$this,
				'wp_ajax_paczkomaty_search_machines_via_ajax',
			]
		);
	}

	/**
	 * Execute AJAX request
	 *
	 * @return void
	 */
	public function wp_ajax_paczkomaty_search_machines_via_ajax(): void {
		check_ajax_referer( $this->nonce_action_name, 'security' );

		$all_machines = [];

		$this->requests = new WPDesk_Paczkomaty_Ajax_Request( $_POST ); // phpcs:ignore

		$cod = $this->requests->get_cod() === 'TRUE';

		$end_of_week_collection = $this->requests->get_end_of_week_collection() === 'TRUE';

		$point_types = WPDesk_Paczkomaty_ShipX_Cache::PARCEL_LOCKER;
		if ( $cod || $end_of_week_collection ) {
			$point_types = WPDesk_Paczkomaty_ShipX_Cache::PARCEL_LOCKER_ONLY;
		}

		$this->machines = $this->pickup_points_manager->get_points( $point_types );

		if ( $this->requests->get_code() ) {
			$all_machines = $this->get_machines_by_code();
		} elseif ( $this->requests->get_city() ) {
			$all_machines['items'] = $this->get_machines_by_city();
		}

		wp_send_json( $all_machines );
	}

	/**
	 * Filter machines by string.
	 *
	 * @param string $search_string .
	 */
	private function filter_machines_by_string( $search_string ) {
		$map_function = 'trim';
		if ( function_exists( 'mb_strtolower' ) ) {
			$search_string = mb_strtolower( $search_string );
			$map_function  = 'mb_strtolower';
		}
		$machines = [];
		$results  = preg_grep(
			'/' . preg_quote( $search_string, '/' ) . '/i',
			array_map( $map_function, $this->machines )
		);
		foreach ( $results as $key => $item ) {
			$machines[ $key ] = $this->machines[ $key ];
		}
		$this->machines = $machines;
	}

	/**
	 * Return a list of parcels for city request
	 *
	 * @return array
	 */
	public function get_machines_by_city() {
		if ( strlen( $this->requests->get_city() ) >= self::MIN_LENGTH ) {
			foreach ( preg_split( '/[\s,.]+/', $this->requests->get_city() ) as $search_string ) {
				$this->filter_machines_by_string( trim( $search_string, '.,;\'"' ) );
			}
		}
		$items = [];
		foreach ( $this->machines as $key => $item ) {
			$items[] = [
				'id'   => $key,
				'text' => $item,
			];
		}

		return $items;
	}

	/**
	 * Return a list of machines for code request
	 *
	 * @return array
	 */
	public function get_machines_by_code() {
		if ( isset( $this->machines[ $this->requests->getCode() ] ) ) {
			return [
				'id'   => $this->requests->getCode(),
				'text' => $this->machines[ $this->requests->getCode() ],
			];
		}

		return [];
	}
}