<?php

namespace App\Helpers;

use Exception;
use GeoIp2\Database\Reader;
use GeoIp2\Exception\AddressNotFoundException;
use Illuminate\Support\Facades\Log;
use Psr\Log\LoggerInterface;

class GeoHelper
{

    const LOG_CHANNEL = 'geoIp';

    private LoggerInterface $logger;

    private string $path;
    private ?string $error = null;

    public function __construct()
    {
        $this->logger = Log::channel(self::LOG_CHANNEL);

        $this->path = env('MAX_MIND_PATH');
    }

    private function error(string $error, array $data = []): void
    {
        $this->error = $error;
        $this->logger->error($error, $data);
    }

    public function getError(): ?string
    {
        return $this->error;
    }

    public function getGeo(): ?string
    {
        $IP = $_SERVER['REMOTE_ADDR'] ?? null;
        if (empty($IP)) {
            $this->error('IP not found', $_SERVER);

            return null;
        }

        if (empty($this->path) || !file_exists($this->path)) {
            $this->error('Database not found', ['path' => $this->path]);

            return null;
        }

        if (AppHelper::isTest() && str_starts_with($IP, '192.168.')) {
            return 'BR';
        }

        try {
            $record = (new Reader($this->path))->city($IP);
        } catch (AddressNotFoundException) {
            $this->error('Address not found in database', ['ip' => $IP]);

            return null;
        } catch (Exception $exception) {
            $this->error(AppHelper::isTest() ? $exception->getMessage() : 'Unexpected exception');

            return null;
        }

        return $record->country->isoCode;
    }

}