<?php

namespace App\Api\Exceptions;

use Exception;
use Illuminate\Validation\ValidationException;
use Response;
use Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Symfony\Component\HttpKernel\Exception\UnauthorizedHttpException;
use Tymon\JWTAuth\Exceptions\TokenExpiredException;

class Handler
{

    public static function render($request, Exception $exception)
    {
        $errResponse = [
            'status'      => 'ERROR',
            'status_code' => '404',
            'message'     => $exception->getMessage(),
        ];

        if ($exception instanceof TokenExpiredException) {
            $errResponse = self::unAuthentication($request, $exception->getMessage());
        } elseif ($exception instanceof UnauthorizedHttpException) {
            $errResponse = self::unAuthentication($request, $exception->getMessage());
        } elseif ($exception instanceof MethodNotAllowedHttpException) {
            $errResponse = self::methodNotAllowed($request);
        } elseif ($exception instanceof NotFoundHttpException) {
            $errResponse = self::pageNotFound($request);
        } elseif ($exception instanceof ValidationException) {
            $errors      = $exception->errors();
            $errResponse = [
                'status'      => 'Validation Error',
                'status_code' => '417',
                'message'     => array_shift($errors)[0],
                'api_uri'     => $request->url(),
            ];
        }

        return Response::json($errResponse);
    }

    private static function methodNotAllowed($request)
    {
        return [
            'status'      => 'MethodNotAllowed',
            'status_code' => '405',
            'message'     => '[ ' . $request->method() . ' ] 请求方法不允许',
            'api_uri'     => $request->url(),
        ];
    }

    private static function unAuthentication($request, $message)
    {
        return [
            'status'      => 'UnAuthenticated',
            'status_code' => '401',
            'message'     => '用户未登录',
            'api_uri'     => $request->url(),
        ];
    }

    private static function pageNotFound($request)
    {
        return [
            'status'      => 'Api Url Not Found',
            'status_code' => '404',
            'message'     => '请求的接口不存在',
            'api_uri'     => $request->url(),
        ];
    }
}