login_api

    public function login($data)
    {
        $username = $data['username'];
        $password = $data['password'];

        $executive = Executive::whereRaw("username LIKE '$username' AND password='$password'")->first();

        if(is_null($executive)) {
            return response()->json([
                'code' => '403',
                'app_message' => 'login unsuccessful, credentials mismatch'
            ]);
        }

        else {
            $executive->access_token = str_random(50);
            $executive->access_time = Carbon::now();
            $executive->save();

            return response()->json([
                'code' => '403',
                'app_message' => 'login success',
                'access_token' => $executive->access_token,
                'access_time' => $executive->access_time
            ]);
        }

    }