60 lines
2.1 KiB
Dart
60 lines
2.1 KiB
Dart
import 'dart:async';
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import 'package:http/http.dart' as http;
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import '../../models/trackers/device_code.dart';
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import '../../utils/platform_http_client_stub.dart'
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if (dart.library.io) '../../utils/platform_http_client_io.dart'
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as platform;
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import 'device_code_poller.dart' as poller;
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/// Base for RFC 8628 device-code auth services.
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///
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/// Owns the HTTP client lifecycle and the full "request code → invoke UI →
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/// poll → build session" dance. Subclasses only implement the three
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/// service-specific hooks: [createDeviceCode], [probe], [buildSession].
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abstract class DeviceCodeAuthServiceBase<T> {
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final http.Client httpClient;
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DeviceCodeAuthServiceBase({http.Client? httpClient})
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: httpClient = httpClient ?? platform.createPlatformClient();
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void dispose() => httpClient.close();
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/// Service-specific device-code request.
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Future<DeviceCode> createDeviceCode();
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/// One service-specific poll attempt — called at each interval tick.
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Future<DevicePollEvent> probe(DeviceCode code);
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/// Build the session object from a successful token response.
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T buildSession(Map<String, dynamic> tokenResponse);
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/// Drive the full flow. Invokes [onCodeReady] once with the code so the UI
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/// can render the dialog, then polls until the user authorizes, denies, or
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/// the code expires. Returns null on denied/expired/cancel.
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Future<T?> authorize({
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required void Function(DeviceCode code) onCodeReady,
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bool Function()? shouldCancel,
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}) async {
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final code = await createDeviceCode();
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onCodeReady(code);
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await for (final event in poller.pollDeviceCode(
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code,
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shouldCancel: shouldCancel,
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probe: () => probe(code),
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)) {
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if (event is DevicePollSuccess) return buildSession(event.tokenResponse);
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if (event is DevicePollDenied || event is DevicePollExpired) return null;
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}
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return null;
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}
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}
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class DeviceCodeAuthFlowException implements Exception {
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final String message;
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const DeviceCodeAuthFlowException(this.message);
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@override
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String toString() => 'DeviceCodeAuthFlowException: $message';
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}
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