router.php

<?php

use API\Commons\Error;
use API\Commons\Exceptions\AuthenticationError;
use API\Commons\Exceptions\AuthorizationError;
use API\Commons\Exceptions\ExternalServiceException;
use API\Commons\Exceptions\NotFoundException;
use API\Commons\Exceptions\UnprocessableException;
use API\Commons\Exceptions\ValidationError;
use Exceptions\ValidationError as Model_ValidationError;
use Klein\Klein;

require_once './inc/Bootstrap.php';

Bootstrap::start();

$klein = new Klein();

/**
 * @param string $path
 * @param string $method
 * @param array  $callback
 *
 * @return void
 */
function route( string $path, string $method, array $callback ) {
    global $klein;

    $klein->respond( $method, $path, function () use ( $callback ) {
        $reflect  = new ReflectionClass( $callback[ 0 ] );
        $instance = $reflect->newInstanceArgs( func_get_args() );
        $instance->respond( $callback[ 1 ] );
    } );
}

$klein->onError( function ( Klein $klein, $err_msg, $err_type, Throwable $exception ) {

    $klein->response()->noCache();
    Log::$fileName = 'fatal_errors.txt';

    try {
        throw $exception;
    } catch ( ValidationError|InvalidArgumentException|Model_ValidationError $e ) {
        $klein->response()->code( 400 );
        $klein->response()->json( ( new Error( [ $e ] ) )->render() );
    } catch ( AuthenticationError $e ) {
        $klein->response()->code( 401 );
        $klein->response()->json( ( new Error( [ $e ] ) )->render() );
    } catch ( AuthorizationError|DomainException $e ) {
        $klein->response()->code( 403 );
        $klein->response()->json( ( new Error( [ $e ] ) )->render() );
    } catch ( NotFoundException|Exceptions\NotFoundException $e ) {
        Log::doJsonLog( 'Record Not found error for URI: ' . $_SERVER[ 'REQUEST_URI' ] );
        $klein->response()->code( 404 );
        $klein->response()->json( ( new Error( [ $e ] ) )->render() );
    } catch ( UnprocessableException $e ) {
        $klein->response()->code( 422 );
        $klein->response()->json( ( new Error( [ $e ] ) )->render() );
    } catch ( ExternalServiceException $e ) {
        $klein->response()->code( 503 );
        $klein->response()->json( ( new Error( [ $e ] ) )->render() );
    } catch ( PDOException $e ) {
        $klein->response()->code( 503 );
//        $klein->response()->json( ( new Error( [ $e ]  ) )->render() );
//        Utils::sendErrMailReport( $exception->getMessage() . " " . $exception->getTraceAsString(), 'Generic error' );
        Log::doJsonLog( [ "error" => $exception->getMessage(), "trace" => $exception->getTrace() ] );
    } catch ( Throwable $e ) {
        $klein->response()->code( 500 );
//        Utils::sendErrMailReport( $exception->getMessage() . " " . $exception->getTraceAsString(), 'Generic error' );
        Log::doJsonLog( [ "error" => $exception->getMessage(), "trace" => $exception->getTrace() ] );
        $klein->response()->json( ( new Error( [ $e ] ) )->render() );
    }

} );

require './lib/Routes/api_v1_routes.php';
require './lib/Routes/api_v2_routes.php';
require './lib/Routes/api_v3_routes.php';
require './lib/Routes/gdrive_routes.php';
require './lib/Routes/oauth_routes.php';
require './lib/Routes/utils_routes.php';
Features::loadRoutes( $klein );

$klein->dispatch();