import Immutable from 'seamless-immutable';

export const types = {
  UPDATE_GAMES: 'GAME/UPDATE_GAMES',
  REQUEST_CREATE_GAME: 'GAME/REQUEST_CREATE_GAME',
  REQUEST_JOIN_GAME: 'GAME/REQUEST_JOIN_GAME',
  REQUEST_START_GAME: 'GAME/REQUEST_JOIN_GAME',
  ENTER_LOBBY: 'GAME/ENTER_LOBBY',
  ENTER_GAME: 'GAME/ENTER_GAME',
};

export const actions = {
  updateGames: games => ({ type: types.UPDATE_GAMES, games: Immutable(games) }),
  requestJoinGame: gameId => ({ type: types.REQUEST_JOIN_GAME, gameId }),
  requestCreateGame: gameName => ({
    type: types.REQUEST_CREATE_GAME,
    gameName,
  }),
  requestStartGame: () => ({ type: types.REQUEST_START_GAME }),
  enterLobby: lobby => ({ type: types.ENTER_LOBBY, lobby: Immutable(lobby) }),
  enterGame: () => ({ type: types.ENTER_GAME }),
};

const initialState = Immutable.from({
  all: {},
  current: '',
});

export default (state = initialState, action) => {
  switch (action.type) {
    case types.UPDATE_GAMES:
      return Immutable.merge(state, { all: action.games }, { deep: true });
    case types.ENTER_LOBBY:
      return state.set('current', action.lobby.id);
    default:
      return state;
  }
};

export const getAllGamesById = state => state.games.all;
export const getAllGames = state => {
  let gamesById = getAllGamesById(state);
  return Object.keys(gamesById).map(k => gamesById[k]);
};
export const getGame = (state, id) => getAllGamesById(state)[id];
export const getCurrentGame = state => getGame(state, state.games.current);