townsquare/src/store/modules/session.js

// helper functions
const set = key => (state, val) => {
  state[key] = val;
};

/**
 * Handle a vote request.
 * If the vote is from a seat that is already locked, ignore it.
 * @param state session state
 * @param index seat of the player in the circle
 * @param vote true or false
 */
const handleVote = (state, [index, vote]) => {
  if (!state.nomination) return;
  state.votes = [...state.votes];
  state.votes[index] = vote === undefined ? !state.votes[index] : vote;
};

const state = () => ({
  sessionId: "",
  isSpectator: false,
  isReconnecting: false,
  playerCount: 0,
  ping: 0,
  playerId: "",
  claimedSeat: -1,
  nomination: false,
  votes: [],
  lockedVote: 0,
  votingSpeed: 3000,
  isVoteInProgress: false,
  voteHistory: [],
  isRolesDistributed: false
});

const getters = {};

const actions = {};

const mutations = {
  setPlayerId: set("playerId"),
  setSpectator: set("isSpectator"),
  setReconnecting: set("isReconnecting"),
  setPlayerCount: set("playerCount"),
  setPing: set("ping"),
  setVotingSpeed: set("votingSpeed"),
  setVoteInProgress: set("isVoteInProgress"),
  claimSeat: set("claimedSeat"),
  distributeRoles: set("isRolesDistributed"),
  setSessionId(state, sessionId) {
    state.sessionId = sessionId
      .toLocaleLowerCase()
      .replace(/[^0-9a-z]/g, "")
      .substr(0, 10);
  },
  nomination(
    state,
    { nomination, votes, votingSpeed, lockedVote, isVoteInProgress } = {}
  ) {
    state.nomination = nomination || false;
    state.votes = votes || [];
    state.votingSpeed = votingSpeed || state.votingSpeed;
    state.lockedVote = lockedVote || 0;
    state.isVoteInProgress = isVoteInProgress || false;
  },
  /**
   * Create an entry in the vote history log. Requires current player array because it might change later in the game.
   * Only stores votes that were completed.
   * @param state
   * @param players
   */
  addHistory(state, players) {
    if (!state.nomination || state.lockedVote <= players.length) return;
    const isBanishment = players[state.nomination[1]].role.team === "traveler";
    state.voteHistory.push({
      timestamp: new Date(),
      nominator: players[state.nomination[0]].name,
      nominee: players[state.nomination[1]].name,
      type: isBanishment ? "Banishment" : "Execution",
      majority: Math.ceil(
        players.filter(player => !player.isDead || isBanishment).length / 2
      ),
      votes: players
        .filter((player, index) => state.votes[index])
        .map(({ name }) => name)
    });
  },
  clearVoteHistory(state) {
    state.voteHistory = [];
  },
  /**
   * Store a vote with and without syncing it to the live session.
   * This is necessary in order to prevent infinite voting loops.
   * @param state
   * @param vote
   */
  vote: handleVote,
  voteSync: handleVote,
  lockVote(state, lock) {
    state.lockedVote = lock !== undefined ? lock : state.lockedVote + 1;
  }
};

export default {
  namespaced: true,
  state,
  getters,
  actions,
  mutations
};