Multi-Chess/fh.fd.ci.server/src/main/java/de/fd/fh/server/user/web/UserController.java

package de.fd.fh.server.user.web;

import com.fasterxml.jackson.databind.ObjectMapper;
import de.fd.fh.server.access.AccessToken;
import de.fd.fh.server.user.User;
import de.fd.fh.server.user.UserId;
import de.fd.fh.server.user.UserService;

import static spark.Spark.get;
import static spark.Spark.post;

public class UserController
{
    private ObjectMapper objectMapper = new ObjectMapper();

    public UserController(final UserService service)
    {
        post("/users",
                ((request, response) ->
                {
                    final UserId userId =
                            ((AccessToken) request.session()
                                    .attribute("userId"))
                                    .getUserId();

                    final ChangeUserRequest message = objectMapper.readValue(request.body(),
                            ChangeUserRequest.class);

                    final User user = service.changePlayer(
                            userId,
                            message);

                    if (user == null)
                    {
                        response.status(400);
                    }
                    else
                    {
                        response.status(200);
                        response.type("application/json");

                        return objectMapper.writeValueAsString(user);
                    }

                    return response;
                }
                ));

        get("/users",
                (request, response) ->
                {
                    final UserId userId =
                            ((AccessToken) request.session()
                                    .attribute("userId"))
                                    .getUserId();

                    final User user = service.getPlayer(userId);

                    if (user == null)
                    {
                        response.status(400);
                    }
                    else
                    {
                        response.status(200);
                        response.type("application/json");

                        return objectMapper.writeValueAsString(user);
                    }

                    return response;
                }
        );

        get("/users/:user_id",
                (request, response) ->
                {
                    final UserId userId = UserId.of(request.params(":user_id"));
                    final UserRequest user = service.getSmallPlayer(userId);

                    if (user == null)
                    {
                        response.status(404);
                    }
                    response.body(objectMapper.writeValueAsString(user));
                    return response;
                });
    }
}