webmentions/index.php

<?php declare(strict_types=1);

require_once __DIR__ . "/vendor/autoload.php";

use Lewisdale\Webmentions\Api\WebmentionApi;
use Lewisdale\Webmentions\Endpoint;
use Lewisdale\Webmentions\Exceptions\InvalidSourceException;
use Lewisdale\Webmentions\Exceptions\InvalidTargetException;
use Lewisdale\Webmentions\Exceptions\InvalidUrlException;
use Lewisdale\Webmentions\Exceptions\SourceNotFoundException;
use Lewisdale\Webmentions\Exceptions\TargetNotMentionedException;
use Lewisdale\Webmentions\Gateways\SqliteGateway;
use Lewisdale\Webmentions\Router\Request;
use Lewisdale\Webmentions\Router\Response;
use Lewisdale\Webmentions\Router\Router;
use Lewisdale\Webmentions\Router\StatusCode;
use Lewisdale\Webmentions\Webmention;
use Symfony\Component\HttpClient\HttpClient;

$dotenv = Dotenv\Dotenv::createImmutable(__DIR__);
$dotenv->load();

$router = new Router();
$gateway = new SqliteGateway($_ENV["DB"]);

$apiController = new WebmentionApi($gateway);

$router->post("/send", function (Request $req, Response $response) {
    $mentioner = new Webmention();
    $source = $req->query["source"];
    try {
        $mentioner->sendForPage($source);
        return;
    } catch (InvalidSourceException $e) {
        $response->status_code = StatusCode::BadRequest;
        return $e->getMessage();
    }
});

$router->post("/endpoint", function (Request $req, Response $response) use ($gateway) {
    $source = $req->post['source'];
    $target = $req->post['target'];

    $endpoint = new Endpoint(HttpClient::create(), $gateway);

    try {
        $id = $endpoint->receiveWebmention($source, $target);

        $response->header('Location', "/webmention/" . $id);
        $response->status_code = StatusCode::Created;
    } catch (InvalidUrlException) {
        $response->status_code = StatusCode::BadRequest;
        return "Source and target must be valid URLs";
    } catch (InvalidTargetException) {
        $response->status_code = StatusCode::BadRequest;
        return "Target must be on the domain lewisdale.dev";
    } catch (SourceNotFoundException $e) {
        $response->status_code = StatusCode::BadRequest;
        return "Source URL was unreachable";
    } catch (TargetNotMentionedException) {
        $response->status_code = StatusCode::BadRequest;
        return "Source does not mention the target";
    }

});

$router->get('/webmention/(\d+)', [$apiController, "get"]);

$router->get('/', fn($req, $res) => "<h1>Webmention server</h1>");

$router->get('/api/webmentions', [$apiController, "list"]);
$router->get('/api/webmentions/(\d+)', [$apiController, "get"]);

$router->dispatch();