Get current Date and Time using Firebase Cloud functions

user_7307315 0
Viewed 6161

I'm pretty much new to Firebase Cloud Functions, so I don't know whether the question I'm going to ask is valid/not.

So basically I'm working on an android fantasy game (which uses firebase database) which has several contests to be started and ended based on the contest's date and time validity. So I want to get the current date and time so that I can calculate the time remaining to participate in the contest and save that in the database (using CLoud functions)

So to get the current time, should I use APIs like 'https://timezonedb.com/api' or is there anything else I can do to get the time.

Also, how can I calculate the remaining time given the deadline and the current time (in TypeScript language)?

I went through a lot of videos and docs, but couldn't figure out any approach. A short explanation and some useful links would be of great help.

google-cloud-functions google-cloud-firestore firebase-realtime-database firebase android
2 Answers

With code running in Cloud Functions, you can trust that the server's sense of time is accurate. For JavaScript running in a node environment, simply run Date.now() to return a timestamp in milliseconds since unix epoch. There is nothing more to do.

user_8071260

You can get the current time from the Firebase by using ServerValue.TIMESTAMP without the need to use Cloud Functions since you have already use Realtime db.

Example code snippet:

DatabaseReference ref = FirebaseDatabase.getInstance().getReference();
String key = ref.push().getKey(); // this will create a new unique key
Map<String, Object> value = new HashMap<>();
value.put("name", "shesh");
value.put("address", "lucknow");
value.put("timestamp", ServerValue.TIMESTAMP);
ref.child(key).setValue(value);
user_101915540
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