<?php

namespace App\Http\Middleware;

use App\Application;
use App\Classes\SendResponse;
use Closure;
use Illuminate\Http\Request;

class ApplicationsV2
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure(\Illuminate\Http\Request): (\Illuminate\Http\Response|\Illuminate\Http\RedirectResponse)  $next
     * @return \Illuminate\Http\Response|\Illuminate\Http\RedirectResponse
     */
    public function handle(Request $request, Closure $next)
    {
        // Obtém o valor do cabeçalho Authorization
        $authHeader = $request->header('Authorization');
        $clientID = $request->header('X-App-ID'); // todo --- new

        if (!$request->hasHeader('X-App-ID')) return SendResponse::errorResp400('X-Client-ID nao existe', 'X-App-ID does not exists'); // todo --- new

        // Verifica se o cabeçalho Authorization está presente
        if ($authHeader && preg_match('/Bearer\s(\S+)/', $authHeader, $matches)) {
            $token = $matches[1];

            // $apps = Application::query()->select('key', 'private_key')->get();

            $client = Application::query()->whereNotNull('app_id')->where('app_id', $clientID)->select('key', 'private_key', 'app_id')->first();
            if (!$client) return SendResponse::errorResp401unauthenticated('App ID invalido', 'Invalid App ID');

            $client_key = $this->isValidToken($client, $token);
            if (!$client_key) return SendResponse::errorResp401unauthenticated('Chave de encriptação invalida', 'Invalid Encryption Key');

            // $app = Application::query()->where('key', $client_key)->first();
            // if (!$app) return SendResponse::errorResp401unauthenticated();

            if ($client->key !== $client_key) return SendResponse::errorResp401unauthenticated();
        } else {
            return SendResponse::errorResp401unauthorized();
        }

        return $next($request);
    }

    private function isValidToken($client, $token)
    {

        try {
            return $this->decryptString($token, $client->private_key);
        } catch (\Throwable $th) {
            return false;
        }
    }

    public function decryptString($encryptedData, $privateKey)
    {
        openssl_private_decrypt(base64_decode($encryptedData), $decryptedData, $privateKey);
        return $decryptedData;
    }
}