<?php

namespace Koneko\GeolocationApi\Services;

use Illuminate\Support\Facades\Http;

class GeolocationApiService
{
    /**
     * Obtiene la configuración del servicio de geolocalización.
     */
    protected function getConfig()
    {
        return [
            'enabled'  => Setting::getValue('geolocation.enabled', false),
            'provider' => Setting::getValue('geolocation.provider', 'locationiq'),
            'api_keys' => json_decode(Setting::getValue('geolocation.api_keys', '{}'), true),
            'language' => Setting::getValue('geolocation.language', 'es'),
            'country_bias' => Setting::getValue('geolocation.country_bias', 'MX'),
        ];
    }

    /**
     * Obtiene coordenadas a partir de una dirección.
     */
    public function getCoordinates(string $address, ?string $provider = null)
    {
        $config = $this->getConfig();

        if (!$config['enabled']) {
            return null;
        }

        $provider = $provider ?: $config['provider'];
        $apiKey = $config['api_keys'][$provider] ?? null;

        if (!$apiKey) {
            return null;
        }

        return match ($provider) {
            'locationiq' => $this->getLocationIQCoordinates($address, $apiKey, $config),
            'google' => $this->getGoogleCoordinates($address, $apiKey, $config),
            default => null,
        };
    }

    /**
     * Llama a la API de LocationIQ para obtener coordenadas.
     */
    protected function getLocationIQCoordinates(string $address, string $apiKey, array $config)
    {
        $url = "https://us1.locationiq.com/v1/search.php";

        $response = Http::get($url, [
            'key' => $apiKey,
            'q' => $address,
            'format' => 'json',
            'accept-language' => $config['language'],
            'countrycodes' => $config['country_bias']
        ]);

        if ($response->successful()) {
            $data = $response->json();

            return [
                'lat' => $data[0]['lat'] ?? null,
                'lng' => $data[0]['lon'] ?? null,
            ];
        }

        return null;
    }

    /**
     * Llama a la API de Google Maps para obtener coordenadas.
     */
    protected function getGoogleCoordinates(string $address, string $apiKey, array $config)
    {
        $url = "https://maps.googleapis.com/maps/api/geocode/json";

        $response = Http::get($url, [
            'key' => $apiKey,
            'address' => $address,
            'language' => $config['language'],
            'region' => $config['country_bias']
        ]);

        if ($response->successful()) {
            $data = $response->json();

            return [
                'lat' => $data['results'][0]['geometry']['location']['lat'] ?? null,
                'lng' => $data['results'][0]['geometry']['location']['lng'] ?? null,
            ];
        }

        return null;
    }
}