<?php

namespace App\MyEp\Api;

use App\BusProNet\Model\Country;
use App\BusProNet\Model\Hotel;
use App\BusProNet\Model\Pickup;
use Psr\Log\LoggerInterface;

/**
 * Turns MyE&P list responses into the BusProNet models the application already works
 * with, keyed the way the data providers expose them.
 *
 * The id MyE&P reports for hotels and pickups is the BusProNet idbuspro, so it fills
 * both the id and the busProId of the models.
 */
class ResponseMapper
{
    public function __construct(private readonly LoggerInterface $logger)
    {
    }

    /**
     * @return array<int, Hotel> keyed by busProId
     */
    public function mapHotels(array $rows): array
    {
        $hotels = [];

        foreach ($rows as $row) {
            if (null === $busProId = $this->readBusProId($row, 'hotel')) {
                continue;
            }

            $hotel = new Hotel();
            $hotel
                ->setBusProId($busProId)
                ->setCode($this->readString($row, 'code'))
                ->setName($this->readString($row, 'name'))
                ->setCountry($this->readString($row, 'country'))
                ->setCountryCode($this->readCountryCode($row))
                ->setCostUnit($this->readString($row, 'costUnit'))
            ;

            $hotels[$busProId] = $hotel;
        }

        return $hotels;
    }

    /**
     * @return array<int, Pickup> keyed by busProId
     */
    public function mapPickups(array $rows): array
    {
        $pickups = [];

        foreach ($rows as $row) {
            if (null === $busProId = $this->readBusProId($row, 'pickup')) {
                continue;
            }

            $pickup = new Pickup();
            $pickup
                ->setId($busProId)
                ->setBusProId($busProId)
                ->setCode($this->readString($row, 'code'))
                ->setCity($this->readString($row, 'city'))
                ->setStreet($this->readString($row, 'street'))
            ;

            // the time is a property of a boarding stop on a date, never of the stop itself
            $pickups[$busProId] = $pickup;
        }

        return $pickups;
    }

    /**
     * @return array<string, Country> keyed by token
     */
    public function mapCountries(array $rows): array
    {
        $countries = [];

        foreach ($rows as $row) {
            $token = is_array($row) ? $this->readString($row, 'token') : null;

            if (null === $token || '' === $token) {
                $this->logger->warning('Skipped a MyE&P country without a token', ['row' => $row]);
                continue;
            }

            $country = new Country();
            $country
                ->setName($this->readString($row, 'name'))
                ->setToken($token)
                ->setNationality($this->readString($row, 'nationality'))
            ;

            $countries[$token] = $country;
        }

        return $countries;
    }

    private function readCountryCode(array $row): ?string
    {
        $countryCode = CountryCode::normalize($row['countryCode'] ?? null);

        if (null === $countryCode && null !== ($row['country'] ?? null)) {
            $this->logger->warning('MyE&P reported a hotel country it could not map to ISO', [
                'id' => $row['id'] ?? null,
                'country' => $row['country'],
                'countryCode' => $row['countryCode'] ?? null,
            ]);
        }

        return $countryCode;
    }

    private function readBusProId(mixed $row, string $type): ?int
    {
        $busProId = is_array($row) ? (int) ($row['id'] ?? 0) : 0;

        if (0 === $busProId) {
            $this->logger->warning(sprintf('Skipped a MyE&P %s without an id', $type), ['row' => $row]);

            return null;
        }

        return $busProId;
    }

    private function readString(array $row, string $key): ?string
    {
        $value = $row[$key] ?? null;

        return null === $value ? null : (string) $value;
    }
}