OpenFrontIO/src/client/LocalPersistantStats.ts

import { consolex } from "../core/Consolex";
import { GameConfig, GameID, GameRecord } from "../core/Schemas";

export interface LocalStatsData {
  [key: GameID]: {
    lobby: GameConfig;
    // Only once the game is over
    gameRecord?: GameRecord;
  };
}

let _startTime: number;

function getStats(): LocalStatsData {
  const statsStr = localStorage.getItem("game-records");
  return statsStr ? JSON.parse(statsStr) : {};
}

function save(stats: LocalStatsData) {
  // To execute asynchronously
  setTimeout(
    () => localStorage.setItem("game-records", JSON.stringify(stats)),
    0,
  );
}

// The user can quit the game anytime so better save the lobby as soon as the
// game starts.
export function startGame(id: GameID, lobby: GameConfig) {
  if (typeof localStorage === "undefined") {
    return;
  }

  _startTime = Date.now();
  const stats = getStats();
  stats[id] = { lobby };
  save(stats);
}

export function startTime() {
  return _startTime;
}

export function endGame(gameRecord: GameRecord) {
  if (typeof localStorage === "undefined") {
    return;
  }

  const stats = getStats();
  const gameStat = stats[gameRecord.id];

  if (!gameStat) {
    consolex.log("LocalPersistantStats: game not found");
    return;
  }

  gameStat.gameRecord = gameRecord;
  save(stats);
}