백그라운드 작업 #

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let InitModule: nkruntime.InitModule = function (ctx: nkruntime.Context, logger: nkruntime.Logger, nk: nkruntime.Nakama, initializer: nkruntime.Initializer) {
  initializer.registerAfterAuthenticateDevice(afterAuthenticateDevice)
}

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let afterAuthenticateDevice : AfterHookFunction<Session, AuthenticateDeviceRequest> = function (ctx: nkruntime.Context, logger: nkruntime.Logger, nk: nkruntime.Nakama, session: nkruntime.Session, request: nkruntime.AuthenticateDeviceRequest) {
  // Define a constant for how many milliseconds are in a day
  const msInADay = 1000 * 60 * 60 * 24;

  // Get previous midnight
  const previousMidnight = new Date().setHours(0, 0, 0, 0);

  // Get the user's account so that we can check their metadata for a lastLoginTimestamp
  const account = nk.accountGetId(ctx.userId);
  const lastLoginTimestamp : number = account.user.metadata.lastLoginTimestamp;

  let rewardCoins = 0;

  if (!lastLoginTimestamp) {
    // If the user has never logged in, give them 100 coins
    rewardCoins = 100;
    logger.debug("Player has never logged in before, giving them 100 coins.");
  } else if(lastLoginTimestamp < previousMidnight) {
    // If the user's last login was before midnight, we're going to give them at least 100 coins
    rewardCoins = 100;

    // Calculate how many full days have passed since midnight and the time they last logged in
    const timeBetweenMidnightAndLastLogin = previousMidnight - account.user.metadata.lastLoginTimestamp;
    const totalFullDaysSinceLastLogin = Math.floor(timeBetweenMidnightAndLastLogin / msInADay);

    // Increase the reward by 100 for each full day since last login
    rewardCoins += totalFullDaysSinceLastLogin * 100;

    logger.debug(`Player has logged in for the first time today and it has been a further ${totalFullDaysSinceLastLogin} days; giving them ${rewardCoins} coins.`);
  } else {
    logger.debug("Player has already logged in today, no coins are being rewarded.");
  }

  // Update the user's lastLoginTimestamp
  const metadata = account.user.metadata;
  metadata.lastLoginTimestamp = Date.now();
  nk.accountUpdateId(ctx.userId, null, null, null, null, null, null, metadata);

  // Give the player their coins
  nk.walletUpdate(ctx.userId, { coins: rewardCoins });
};