62 lines
1.8 KiB
Dart
62 lines
1.8 KiB
Dart
import 'dart:async';
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import 'dart:convert';
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import '../../../../model/accountData.dart';
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import '../../webuntisApi.dart';
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import 'authenticateParams.dart';
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import 'authenticateResponse.dart';
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class Authenticate extends WebuntisApi {
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AuthenticateParams param;
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Authenticate(this.param) : super('authenticate', param, authenticatedResponse: false);
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@override
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Future<AuthenticateResponse> run() async {
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awaitingResponse = true;
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try {
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var rawAnswer = await query(this);
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AuthenticateResponse response = finalize(AuthenticateResponse.fromJson(jsonDecode(rawAnswer)['result']));
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_lastResponse = response;
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if(!awaitedResponse.isCompleted) awaitedResponse.complete();
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return response;
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} catch (e) {
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// Surface the error to anyone waiting on the current completer, then
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// install a fresh one so a future attempt can succeed. Without this,
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// any later call to getSession() would hang forever on a completer
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// that is already settled with no listeners (or never settles at all).
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if(!awaitedResponse.isCompleted) awaitedResponse.completeError(e);
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awaitedResponse = Completer();
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rethrow;
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} finally {
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awaitingResponse = false;
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}
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}
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static bool awaitingResponse = false;
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static Completer awaitedResponse = Completer();
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static AuthenticateResponse? _lastResponse;
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static Future<void> createSession() async {
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_lastResponse = await Authenticate(
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AuthenticateParams(
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user: AccountData().getUsername(),
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password: AccountData().getPassword(),
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)
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).run();
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}
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static Future<AuthenticateResponse> getSession() async {
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if(awaitingResponse) {
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await awaitedResponse.future;
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}
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if(_lastResponse == null) {
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awaitingResponse = true;
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await createSession();
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}
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return _lastResponse!;
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}
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}
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