<?php

namespace App\Helpers;


use Firebase\JWT\JWT;
use Firebase\JWT\Key;
use Firebase\JWT\ExpiredException;
use Firebase\JWT\BeforeValidException;
use Firebase\JWT\SignatureInvalidException;
// use Psr\Http\Message\RequestInterface;
use CodeIgniter\HTTP\RequestInterface;
use ReflectionClass;


class JWTToken
{
    public static function encode($data =null)
    {
        $secret_Key="secret";
        $iat = time();
        $exp = $iat + 36000;
        $request_data = [
            "iat" => $iat, 
            "exp" => $exp,
        ];
        if ($data !== null) {
            $request_data = array_merge($request_data, (array)$data);
        }
        try{
        $token =  JWT::encode($request_data ,$secret_Key,'HS512');

        return $token;
        // return ['status' => true,'token' => $token];
        }
        catch (Exception $e) {
            return ['status' => false,'message' => $e->getMessage()];
        }
    }

    public static function validateJWT($jwt)
    {
            $jwtParts = explode(' ', $jwt);

            // print_r($jwtParts);
            if (count($jwtParts) != 2 || $jwtParts[0] == 'Bearer') {
                return false;
            }

            $token = $jwtParts[1];

            try {
                $decoded = JWT::decode($token, new Key("secret", 'HS512'));
                return json_encode(['status' => true, 'message' => 'Token is valid', 'decoded' => (array) $decoded]);
            } catch (ExpiredException $e) {
                return json_encode(['status' => false, 'message' => 'Token has expired']);
            } catch (BeforeValidException $e) {
                return json_encode(['status' => false, 'message' => 'Token is not yet valid']);
            } catch (SignatureInvalidException $e) {
                return json_encode(['status' => false, 'message' => 'Token signature is invalid']);
            } catch (\Exception $e) {
                return json_encode(['status' => false, 'message' => 'An error occurred while decoding the token']);
            }           

    }


    public static function getIdFromToken($jwt)
    {

            $jwtParts = explode(' ', $jwt);

            $token = $jwtParts[0];

            try {
                $decoded = JWT::decode($token, new Key("secret", 'HS512'));
                return json_encode(['status' => true, 'message' => 'Token is valid', 'data' =>$decoded->data->id ]);
            } catch (ExpiredException $e) {
                return json_encode(['status' => false, 'message' => 'Token has expired']);
            } catch (BeforeValidException $e) {
                return json_encode(['status' => false, 'message' => 'Token is not yet valid']);
            } catch (SignatureInvalidException $e) {
                return json_encode(['status' => false, 'message' => 'Token signature is invalid']);
            } catch (\Exception $e) {
                return json_encode(['status' => false, 'message' => 'An error occurred while decoding the token']);
            }           


    }

    public static function getUserIdFromToken()
    {
        $request = \Config\Services::request();
        $jwt = $request->getHeader('Authorization');
        $jwtParts = explode(' ', $jwt);
        $token = $jwtParts[1];    
        
        $decoded = JWT::decode($token, new Key("secret", 'HS512'));
        return $decoded->id;
    }

    public static function getUserRoleFromToken()
    {
        $request = \Config\Services::request();
        $jwt = $request->getHeader('Authorization');
        $jwtParts = explode(' ', $jwt);
        $token = $jwtParts[1];    
        
        $decoded = JWT::decode($token, new Key("secret", 'HS512'));
        return $decoded->role;
    }


    public static function decodeToken()
    {
        $request = \Config\Services::request();
        $jwt = $request->getHeader('Authorization');
        $jwtParts = explode(' ', $jwt);
        $token = $jwtParts[1];    
        
        $decoded = JWT::decode($token, new Key("secret", 'HS512'));
        return $decoded;
    }

}