@POST
    @Path("/authenticate")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    public Response authenticateCredentials(@HeaderParam("email") String email,
            @HeaderParam("password") String password, @HeaderParam("accessToken") String accessToken,
            @HeaderParam("type") String loginType)
            throws JsonGenerationException, JsonMappingException, IOException {

        logger.info("Authenticating User Credentials...loginType : " + loginType);

        StatusMessage<Users> statusMessage = null;
        String jweSerialization = null;

        if(loginType == null){
            statusMessage = new StatusMessage();
            statusMessage.setStatus(Status.PRECONDITION_FAILED.getStatusCode());
            statusMessage.setMessage("login type value is missing...");
            return Response.status(Status.PRECONDITION_FAILED.getStatusCode()).entity(statusMessage).build();
        }

        LoginType type = LoginType.valueOf(loginType);

        switch (type) {
        case systems:
            if(email == null){
                statusMessage = new StatusMessage();
                statusMessage.setStatus(Status.PRECONDITION_FAILED.getStatusCode());
                statusMessage.setMessage("email value is missing...");
                return Response.status(Status.PRECONDITION_FAILED.getStatusCode()).entity(statusMessage).build();
            }

            if(password == null){
                statusMessage = new StatusMessage();
                statusMessage.setStatus(Status.PRECONDITION_FAILED.getStatusCode());
                statusMessage.setMessage("password value is missing...");
                return Response.status(Status.PRECONDITION_FAILED.getStatusCode()).entity(statusMessage).build();
            }

            Users user = usersDAO.validate(email, password);
            logger.info("user after validate : " + user);
            if(user == null){
                statusMessage = new StatusMessage();
                statusMessage.setStatus(Status.NOT_FOUND.getStatusCode());
                statusMessage.setMessage("User not found...");
                return Response.status(Status.NOT_FOUND.getStatusCode()).entity(statusMessage).build();
            }
            jweSerialization = getJWEToken(user);
            user.setPassword(null); //not return password and OTP
            user.setOTP(null);
            statusMessage = new StatusMessage<Users>();
            statusMessage.setStatus(Status.OK.getStatusCode());
            statusMessage.setMessage(jweSerialization);
            statusMessage.setData(user);
            logger.info("statusMessage : " + statusMessage);

            return Response.status(Status.OK.getStatusCode()).entity(statusMessage).build();

        case facebook:
            if(email == null){
                statusMessage = new StatusMessage<Users>();
                statusMessage.setStatus(Status.PRECONDITION_FAILED.getStatusCode());
                statusMessage.setMessage("email value is missing...");
                return Response.status(Status.PRECONDITION_FAILED.getStatusCode()).entity(statusMessage).build();
            }
            if(accessToken == null){
                statusMessage = new StatusMessage<Users>();
                statusMessage.setStatus(Status.PRECONDITION_FAILED.getStatusCode());
                statusMessage.setMessage("facebook access token value is missing...");
                return Response.status(Status.PRECONDITION_FAILED.getStatusCode()).entity(statusMessage).build();
            }


            FacebookAuth facebookAuth = new FacebookAuth();
            SocialUser fbUser = facebookAuth.verifySocialUser(accessToken);
            if(fbUser == null){
                statusMessage = new StatusMessage<Users>();
                statusMessage.setStatus(Status.FORBIDDEN.getStatusCode());
                statusMessage.setMessage("Fail while verify facebook user...");
                return Response.status(Status.FORBIDDEN.getStatusCode()).entity(statusMessage).build();
            }

            Users fb_user = usersDAO.validate(fbUser.getEmail(), null);
            if(fb_user == null){
                statusMessage = new StatusMessage<Users>();
                statusMessage.setStatus(Status.NOT_FOUND.getStatusCode());
                statusMessage.setMessage("User not found...");
                return Response.status(Status.NOT_FOUND.getStatusCode()).entity(statusMessage).build();
            }

            jweSerialization = getJWEToken(fb_user);
            fb_user.setPassword(null); //not return password and OTP
            fb_user.setOTP(null);
            statusMessage = new StatusMessage<Users>();
            statusMessage.setStatus(Status.OK.getStatusCode());
            statusMessage.setMessage(jweSerialization);
            statusMessage.setData(fb_user);
            logger.info("statusMessage : " + statusMessage);

            return Response.status(Status.OK.getStatusCode()).entity(statusMessage).build();
        case google:
            if(email == null){
                statusMessage = new StatusMessage<Users>();
                statusMessage.setStatus(Status.PRECONDITION_FAILED.getStatusCode());
                statusMessage.setMessage("email value is missing...");
                return Response.status(Status.PRECONDITION_FAILED.getStatusCode()).entity(statusMessage).build();
            }
            if(accessToken == null){
                statusMessage = new StatusMessage<Users>();
                statusMessage.setStatus(Status.PRECONDITION_FAILED.getStatusCode());
                statusMessage.setMessage("google access token value is missing...");
                return Response.status(Status.PRECONDITION_FAILED.getStatusCode()).entity(statusMessage).build();
            }

            GoogleAuth googleAuth = new GoogleAuth();
            SocialUser ggUser = googleAuth.verifySocialUser(accessToken);
            if(ggUser == null){
                statusMessage = new StatusMessage<Users>();
                statusMessage.setStatus(Status.FORBIDDEN.getStatusCode());
                statusMessage.setMessage("Fail while verify Goolge user...");
                return Response.status(Status.FORBIDDEN.getStatusCode()).entity(statusMessage).build();
            }

            Users gg_User = usersDAO.validate(ggUser.getEmail(), null);
            if(gg_User == null){
                statusMessage = new StatusMessage<Users>();
                statusMessage.setStatus(Status.NOT_FOUND.getStatusCode());
                statusMessage.setMessage("User not found...");
                return Response.status(Status.NOT_FOUND.getStatusCode()).entity(statusMessage).build();
            }

            jweSerialization = getJWEToken(gg_User);
            gg_User.setPassword(null); //not return password and OTP
            gg_User.setOTP(null);
            statusMessage = new StatusMessage<Users>();
            statusMessage.setStatus(Status.OK.getStatusCode());
            statusMessage.setMessage(jweSerialization);
            statusMessage.setData(gg_User);
            logger.info("statusMessage : " + statusMessage);

            return Response.status(Status.OK.getStatusCode()).entity(statusMessage).build();

        default:
            statusMessage = new StatusMessage<Users>();
            statusMessage.setStatus(Status.FORBIDDEN.getStatusCode());
            statusMessage.setMessage("Wrong login type...");
            return Response.status(Status.FORBIDDEN.getStatusCode()).entity(statusMessage).build();
        }
    }