<?php

declare(strict_types=1);

namespace App\Tests\Shared\Geocoding;

use App\Shared\Infrastructure\Geocoding\BanGeocoder;
use PHPUnit\Framework\TestCase;
use Psr\Log\NullLogger;
use Symfony\Component\HttpClient\MockHttpClient;
use Symfony\Component\HttpClient\Response\MockResponse;

/**
 * Mapping de la reponse BAN (api-adresse.data.gouv.fr/search/) vers le value
 * object Coordinates (M6.1, spec § 7) — via MockHttpClient, sans reseau.
 *
 * Contrat teste : GeoJSON [longitude, latitude] inverse en (latitude,
 * longitude), arrondi NUMERIC(10,7), score minimal, et tolerance aux pannes
 * (toute erreur -> null, jamais d'exception).
 *
 * @internal
 */
final class BanGeocoderTest extends TestCase
{
    public function testGeocodeMapsBanFeatureToCoordinates(): void
    {
        $geocoder = $this->geocoderReturning([
            'features' => [[
                'geometry'   => ['coordinates' => [0.3404333, 46.5802596]],
                'properties' => ['score' => 0.97],
            ]],
        ]);

        $coordinates = $geocoder->geocode('1 rue du Test, 86100 Châtellerault');

        self::assertNotNull($coordinates);
        // GeoJSON = [longitude, latitude] : l'ordre doit etre inverse.
        self::assertSame('46.5802596', $coordinates->latitude);
        self::assertSame('0.3404333', $coordinates->longitude);
    }

    public function testGeocodeRoundsToSevenDecimals(): void
    {
        $geocoder = $this->geocoderReturning([
            'features' => [[
                'geometry'   => ['coordinates' => [0.34043337777, 46.58025961111]],
                'properties' => ['score' => 0.9],
            ]],
        ]);

        $coordinates = $geocoder->geocode('1 rue du Test');

        self::assertNotNull($coordinates);
        self::assertSame('46.5802596', $coordinates->latitude);
        self::assertSame('0.3404334', $coordinates->longitude);
    }

    public function testGeocodeReturnsNullWhenScoreTooLow(): void
    {
        // Score < 0.4 : resultat juge non fiable (adresse etrangere, lieu-dit
        // inconnu) -> pas de coordonnees plutot qu'une position fantaisiste.
        $geocoder = $this->geocoderReturning([
            'features' => [[
                'geometry'   => ['coordinates' => [0.34, 46.58]],
                'properties' => ['score' => 0.12],
            ]],
        ]);

        self::assertNull($geocoder->geocode('Bahnhofstrasse 1, Zürich'));
    }

    public function testGeocodeReturnsNullWhenNoFeature(): void
    {
        $geocoder = $this->geocoderReturning(['features' => []]);

        self::assertNull($geocoder->geocode('zzz introuvable'));
    }

    public function testGeocodeReturnsNullOnServerError(): void
    {
        $client   = new MockHttpClient(new MockResponse('oops', ['http_code' => 500]));
        $geocoder = new BanGeocoder($client, new NullLogger());

        self::assertNull($geocoder->geocode('1 rue du Test'));
    }

    public function testGeocodeReturnsNullOnBlankAddressWithoutHttpCall(): void
    {
        $client   = new MockHttpClient(static function (): never {
            self::fail('Aucun appel HTTP attendu pour une adresse vide.');
        });
        $geocoder = new BanGeocoder($client, new NullLogger());

        self::assertNull($geocoder->geocode('   '));
    }

    /** Fabrique un BanGeocoder repondant le payload JSON donne (HTTP 200). */
    private function geocoderReturning(array $payload): BanGeocoder
    {
        $client = new MockHttpClient(new MockResponse(
            json_encode($payload, JSON_THROW_ON_ERROR),
            ['response_headers' => ['content-type' => 'application/json']],
        ));

        return new BanGeocoder($client, new NullLogger());
    }
}