processMetaCreds method

@override void processMetaCreds(List<Credential> creds, bool update)

Called by Tinode when meta.sub is received.

Implementation

@override
void processMetaCreds(List<Credential> creds, bool update) {
  // ignore: unrelated_type_equality_checks
  if (creds.length == 1 && creds[0] == DEL_CHAR) {
    creds = [];
  }

  if (update) {
    creds.forEach((cr) {
      // Adding a credential.
      var idx = _credentials.indexWhere((el) {
        return el.meth == cr.meth && el.val == cr.val;
      });

      if (cr.val != null) {
        if (idx < 0) {
          // Not found.
          if (cr.done == false || cr.done == null) {
            // Unconfirmed credential replaces previous unconfirmed credential of the same method.
            idx = _credentials.indexWhere((el) {
              return el.meth == cr.meth &&
                  (el.done == false || cr.done == null);
            });
            if (idx >= 0) {
              // Remove previous unconfirmed credential.
              _credentials.removeAt(idx);
            }
          }
          _credentials.add(cr);
        } else {
          // Found. Maybe change 'done' status.
          _credentials[idx].done = cr.done;
        }
      } else if (cr.resp != null) {
        // Handle credential confirmation.
        idx = _credentials.indexWhere((el) {
          return el.meth == cr.meth && (el.done == false || cr.done == null);
        });

        if (idx >= 0) {
          _credentials[idx].done = true;
        }
      }
    });
  } else {
    _credentials = creds;
  }

  onCredsUpdated.add(_credentials);
}