How to automatically delete a user in Firebase?

问题

CODE:

app.js

setInterval(function() {

    console.log("1");
    var pendingRef = admin.database().ref("pending");
    var now = Date.now();
    var cutoff = now - 1 * 60 * 60 * 1000;
    var old = pendingRef.orderByChild('timestamp').endAt(cutoff).limitToLast(1);
    console.log("2");
    var listener = old.on('child_added', function(snapshot) {
        console.log("3");
        console.log("A VALUE:"+snapshot.val());
        snapshot.delete().then(function() {
            snapshot.ref().remove();
        }, function(error) {
            console.log("USER WAS NOT DELETED:"+ snapshot.val().key);
        });
    });
}, 1000 * 10);

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SITUATION:

I call it at the end of my app.js

Nothing happens.

Nothing gets printed to the console after "1" and "2".

---

EDIT:

I cannot call .remove() on a snapshot.

Also, from the docs:

"To delete a user, the user must have signed in recently. See Re-authenticate a user."

How can I delete a user then ?

---

REFERENCE:

Delete firebase data older than 2 hours

https://firebase.google.com/docs/auth/web/manage-users#delete_a_user

回答1:

There is no delete method on the snapshot. Instead, you should just call remove on the snapshot's ref:

var listener = old.on('child_added', function (snapshot) {
  console.log("EXECUTING...");
  console.log("A VALUE:" + snapshot.val());
  snapshot.ref
    .remove()
    .catch(function (error) {
      console.log("USER WAS NOT DELETED:" + snapshot.key);
    });
});

To delete the user account - in addition to the user data you have stored - you also need to call the deleteUser method (as you are running this on Node using firebase-admin):

var listener = old.on('child_added', function (snapshot) {
  console.log("EXECUTING...");
  console.log("A VALUE:" + snapshot.val());
  snapshot.ref
    .remove()
    .then(function () {
      return admin.auth().deleteUser(snapshot.key);
    })
    .catch(function (error) {
      console.log("USER WAS NOT DELETED:" + snapshot.key);
    });
});

来源：https://stackoverflow.com/questions/41696708/how-to-automatically-delete-a-user-in-firebase