<?php

declare(strict_types=1);

use App\Db\Connection;
use App\Db\Migrator;
use App\Http\Request;
use App\Http\Response;
use App\Http\Router;
use App\Http\View;

define('APP_ROOT', dirname(__DIR__));

// ---------------------------------------------------------------------------
// Autoload
// ---------------------------------------------------------------------------
$autoload = APP_ROOT . '/vendor/autoload.php';
if (!is_file($autoload)) {
    http_response_code(500);
    header('Content-Type: text/plain; charset=utf-8');
    echo "Composer dependencies are not installed.\n";
    echo "Run: composer install (or rebuild the container).\n";
    exit;
}
require $autoload;

// ---------------------------------------------------------------------------
// Environment
// ---------------------------------------------------------------------------
if (is_file(APP_ROOT . '/.env')) {
    $dotenv = Dotenv\Dotenv::createImmutable(APP_ROOT);
    $dotenv->safeLoad();
}

$appEnv = getenv('APP_ENV') ?: 'production';
if ($appEnv !== 'production') {
    ini_set('display_errors', '1');
    error_reporting(E_ALL);
} else {
    ini_set('display_errors', '0');
}

// ---------------------------------------------------------------------------
// Migrations — cheap no-op when already current
// ---------------------------------------------------------------------------
try {
    $pdo = Connection::pdo();
    (new Migrator($pdo))->migrate();
} catch (\Throwable $e) {
    http_response_code(500);
    header('Content-Type: text/plain; charset=utf-8');
    echo "Database bootstrap failed.\n";
    if ($appEnv !== 'production') {
        echo $e->getMessage() . "\n";
    }
    exit;
}

// ---------------------------------------------------------------------------
// Routing
// ---------------------------------------------------------------------------
$view   = new View(APP_ROOT . '/views');
$router = new Router();

$router->get('/', function (Request $req) use ($view, $pdo): Response {
    $version = (int) $pdo->query('SELECT COALESCE(MAX(version), 0) FROM schema_version')->fetchColumn();
    return Response::html($view->render('home', [
        'title'         => 'Sprint Planner',
        'schemaVersion' => $version,
        'dbPath'        => Connection::path(),
        'appEnv'        => $appEnv,
    ]));
});

$router->get('/healthz', function (): Response {
    return Response::text('ok');
});

// ---------------------------------------------------------------------------
// Dispatch
// ---------------------------------------------------------------------------
$request  = Request::fromGlobals();
$response = $router->dispatch($request);
$response->send();