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

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import de.fd.fh.server.game.Game;
import de.fd.fh.server.game.GameId;
import de.fd.fh.server.game.GameService;
import de.fd.fh.server.user.UserId;
import de.fd.fh.shared.network.messages.CreateGameRequest;
import lombok.RequiredArgsConstructor;
import spark.Request;
import spark.Response;

import java.io.IOException;
import java.util.List;

@RequiredArgsConstructor
public class GameController
{
    private final ObjectMapper objectMapper = new ObjectMapper();

    private final GameService service;

    public Response createGame(final Request request, final Response response) throws IOException
    {
        final CreateGameRequest createRequest = objectMapper.readValue(request.body(), CreateGameRequest.class);

        final UserId whiteUser = UserId.of(createRequest.getWhiteUserId());
        final UserId blackUser = UserId.of(createRequest.getBlackUserId());

        final GameId gameId = service.createGame(blackUser, whiteUser);

        if (gameId == null)
        {
            response.status(400);
        }
        else
        {
            response.body(objectMapper.writeValueAsString(gameId));
            response.status(201);
        }

        return response;
    }

    public Response findGameById(final Request request, final Response response) throws JsonProcessingException
    {
        final GameId gameId = GameId.of(request.params(":game_id"));

        final Game game = service.findGameById(gameId);

        if (game == null)
        {
            response.status(404);
        }
        else
        {
            response.body(objectMapper.writeValueAsString(game));
            response.status(200);
        }

        return response;
    }

    public Response findRunningGamesOfUser(final Request request, final Response response) throws JsonProcessingException
    {
        final UserId userId = UserId.of(request.params(":user_id"));

        final List<Game> games = service.findRunningGamesOfUser(userId);

        if (games == null)
        {
            response.status(404);
        }
        else
        {
            response.body(objectMapper.writeValueAsString(games));
            response.status(200);
        }

        return response;
    }
}