<?php
/**
 * ShipX Points
 *
 * @package WooCommerce Paczkomaty InPost
 */

/**
 * Can get points from API.
 */
class WPDesk_Paczkomaty_ShipX_Points {

	const MAX_PER_PAGE = 500;

	/**
	 * @var WPDesk_Paczkomaty_ShipX
	 */
	private $api_client;

	/**
	 * @param WPDesk_Paczkomaty_ShipX $api_client .
	 */
	public function __construct( $api_client ) {
		$this->api_client = $api_client;
	}

	/**
	 * @param stdClass $item .
	 * @param string   $field_name .
	 *
	 * @return stdClass
	 */
	private function unset_item_field( $item, $field_name ) {
		unset( $item->{$field_name} );

		return $item;
	}

	/**
	 * @param stdClass $item .
	 *
	 * @return stdClass
	 */
	private function unset_item_unnecessary_data( $item ) {
		foreach ( $item as $property => $value ) {
			if ( ! in_array( $property, [ 'name', 'type', 'address', 'payment_available' ], true ) ) {
				$item = $this->unset_item_field( $item, $property );
			}
		}

		return $item;
	}

	/**
	 * Get points from api.
	 *
	 * @param string $type .
	 *
	 * @return array
	 * @throws Exception|WPDesk_Paczkomaty_ShipX_Exception .
	 */
	public function get_points_from_api( $type = 'parcel_locker' ) {
		$params = [
			'per_page' => self::MAX_PER_PAGE,
		];
		if ( $type ) {
			$params['type'] = $type;
		}
		$get_points = true;
		while ( $get_points ) {
			$get_points = false;
			try {
				$api_points = $this->api_client->get_points( $params );
			} catch ( Exception $e ) {
				$per_page = $params['per_page'];
				if ( self::MAX_PER_PAGE === $per_page && WPDesk_Paczkomaty_ShipX::API_PER_PAGE !== $per_page ) {
					$params['per_page'] = WPDesk_Paczkomaty_ShipX::API_PER_PAGE;
					$api_points = $this->api_client->get_points( $params );
				} else {
					throw $e;
				}
			}
			foreach ( $api_points->items as $item ) {
				yield $this->unset_item_unnecessary_data( $item );
			}
			if ( $api_points->page < $api_points->total_pages ) {
				$get_points     = true;
				$params['page'] = intval( $api_points->page ) + 1;
			}
			unset( $api_points );
		}
	}

	/**
	 * Returns point data from API.
	 *
	 * @see https://docs.inpost24.com/display/PL/%5B1.5.2%5D+Points#id-[1.5.2]Points-Informationaboutpoints
	 *
	 * @param string $point_name .
	 *
	 * @return stdClass
	 * @throws Exception .
	 * @throws WPDesk_Paczkomaty_ShipX_Exception .
	 */
	public function get_point_from_api( $point_name ) {
		return $this->api_client->get_point( $point_name );
	}
}