Obtaining the Unix timestamp within Firebase: A step-by-step guide

Within my chess application, I utilize Firebase.ServerValue.TIMESTAMP to document the timing of each move.

If a user fails to make a move within 24 hours, they forfeit the game. It is important for me to indicate how much time the user has left to make their move. To achieve this, I must have access to the current unix timestamp and then execute the following calculation:

time left = (last move unix timestamp) + (24 hours) - (current unix timestamp)

Relying on the accuracy of the user's machine time may not be the most reliable approach.

Is there a method to attain the unix timestamp directly from Firebase servers?

Related inquiry

javascriptfirebase

Answer №1

One way to determine the time difference between local and server is by using the method .info/serverTimeOffset:

var calculateTimeDifference = (function() {
  var OFFSET = 0;

  fbUtility.reference("/.info/serverTimeOffset").on('value', function(snapshot) {
    OFFSET = snapshot.val()||0;
  });

  return function() {
     return Date.now() + OFFSET;
  }
})();

var currentLocalTime = calculateTimeDifference();
var timeDelta = currentLocalTime - timestamp;

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