OAuth device limit flow updates - #9019
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Included review availability: Your plan provides up to 10 included reviews per hour; 8 remain after this review. 📝 WalkthroughWalkthroughThe PR adds OAuth device-limit callback support across native bridges, Lantern Core, Flutter services, deep links, WebViews, and authentication flows. It loads the affected account identity, removes a selected device, and retries the original operation. ChangesOAuth device-limit authentication
Dependency updates
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🟠 High · up to The OAuth device-limit flow currently calls a native method that is not defined, preventing the native core from compiling and making the pull request unsafe to merge until the interface mismatch is fixed. Sequence Diagram(s)sequenceDiagram
participant OAuthProvider
participant OAuthLogin
participant LanternService
participant LanternCore
participant DeviceLimitReached
OAuthProvider-->>OAuthLogin: OAuth callback with token or result
OAuthLogin->>LanternService: oAuthDeviceLimitCallback(token)
LanternService->>LanternCore: OAuthDeviceLimitCallback(token)
LanternCore-->>LanternService: Account identity loaded
OAuthLogin->>DeviceLimitReached: Show account devices
DeviceLimitReached-->>OAuthLogin: Device removed
OAuthLogin->>OAuthProvider: Retry OAuth
Suggested reviewers: 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 35.71% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 14 functions across 6 files. (2 skipped: 2 unsupported.) ✨ Finishing Touches🧪 Generate unit tests (beta)
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Pull request overview
This PR adds end-to-end support for handling “device limit reached” during OAuth authentication by introducing a dedicated “device-limit callback” to load account identity (without logging in), then reusing the existing device-removal UI flow and retrying OAuth login after a device is removed.
Changes:
- Added a new
OAuthDeviceLimitCallbackAPI in Go core, exposed via FFI and platform channels (Android/iOS/macOS), and wired through the Flutter service layer. - Updated OAuth UI flow to detect device-limit callback payloads, authorize device removal via the new callback, run the shared device-removal flow, and then restart OAuth login.
- Centralized device-limit device-removal handling into
startDeviceLimitFlowand reused it in password sign-in and purchase restoration.
Reviewed changes
Copilot reviewed 18 out of 20 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
| macos/Runner/Handlers/MethodHandler.swift | Adds macOS method-channel handling for oauthDeviceLimitCallback and calls into gomobile. |
| macos/Podfile.lock | Updates CocoaPods checksums after dependency resolution changes. |
| lib/lantern/lantern_service.dart | Routes oAuthDeviceLimitCallback to FFI vs platform implementation based on platform support. |
| lib/lantern/lantern_platform_service.dart | Adds method-channel invocation for oauthDeviceLimitCallback. |
| lib/lantern/lantern_ffi_service.dart | Adds FFI call path for oAuthDeviceLimitCallback with API-error checking. |
| lib/lantern/lantern_core_service.dart | Extends the core service interface with oAuthDeviceLimitCallback and documents intent. |
| lib/lantern_app.dart | Updates deep-link auth handling to accept OAuth device-limit callback payloads. |
| lib/features/plans/restore_purchase_mixin.dart | Reuses the new shared startDeviceLimitFlow for restore-purchase device-limit handling. |
| lib/features/auth/sign_in_password.dart | Reuses the new shared startDeviceLimitFlow for password sign-in device-limit handling. |
| lib/features/auth/provider/auth_notifier.dart | Adds notifier wrapper for oAuthDeviceLimitCallback and reformats method signatures for consistency. |
| lib/features/auth/device_limit_flow.dart | Introduces shared device-limit flow helper (navigate → delay → callback). |
| lib/core/widgets/oauth_login.dart | Adds OAuth device-limit parsing/handling and restarts OAuth after device removal. |
| lib/core/widgets/app_webview.dart | Updates OAuth callback detection and suppresses benign non-HTTP(S) navigation errors. |
| lib/core/utils/deeplink_utils.dart | Adds isOAuthCallbackResult helper to detect OAuth callback query payloads robustly. |
| lantern-core/mobile/mobile.go | Exposes OAuthDeviceLimitCallback to mobile bindings without logging the user in. |
| lantern-core/ffi/ffi.go | Exports oAuthDeviceLimitCallback for Dart FFI bindings. |
| lantern-core/core.go | Extends the Core interface and implements OAuthDeviceLimitCallback via the client. |
| ios/Runner/Handlers/MethodHandler.swift | Adds iOS method-channel handling for oauthDeviceLimitCallback and calls into gomobile. |
| android/app/src/main/kotlin/org/getlantern/lantern/handler/MethodHandler.kt | Adds Android method-channel handling for oauthDeviceLimitCallback and calls into gomobile. |
Suppressed comments (1)
lib/core/widgets/oauth_login.dart:132
- _handleOAuthPayload is async but is invoked from onWebviewResult, whose callback type is synchronous (Function(T)). This leaves the Future unawaited and can result in analyzer warnings or unhandled exceptions. Wrap the call with unawaited(...).
onWebviewResult: (p0) {
appLogger.debug('WebView result: $p0');
_handleOAuthPayload(type, ref, context, p0);
},
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Inline comments:
In `@lantern-core/core.go`:
- Around line 1018-1019: Update LanternCore.OAuthDeviceLimitCallback to use a
callback method supported by the pinned ipc.Client API; either add the matching
OAuthDeviceLimitCallback method to Radiance or delegate to the existing
OAuthLoginCallback API, ensuring the selector compiles and preserves the
device-limit callback behavior.
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⛔ Files ignored due to path filters (1)
macos/Podfile.lockis excluded by!**/*.lock
📒 Files selected for processing (19)
android/app/src/main/kotlin/org/getlantern/lantern/handler/MethodHandler.ktios/Runner/Handlers/MethodHandler.swiftlantern-core/core.golantern-core/ffi/ffi.golantern-core/mobile/mobile.golib/core/utils/deeplink_utils.dartlib/core/widgets/app_webview.dartlib/core/widgets/oauth_login.dartlib/features/auth/device_limit_flow.dartlib/features/auth/provider/auth_notifier.dartlib/features/auth/sign_in_password.dartlib/features/plans/restore_purchase_mixin.dartlib/lantern/lantern_core_service.dartlib/lantern/lantern_ffi_service.dartlib/lantern/lantern_generated_bindings.dartlib/lantern/lantern_platform_service.dartlib/lantern/lantern_service.dartlib/lantern_app.dartmacos/Runner/Handlers/MethodHandler.swift
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This pull request introduces comprehensive support for handling OAuth login flows that encounter device limits. The changes ensure that when a user hits the device limit during OAuth authentication, the app can prompt for device removal, authorize the removal action, and then restart the OAuth flow seamlessly. The implementation spans backend (Go core and FFI), mobile platform channels (Android/iOS), and Flutter UI/logic.
OAuth Device Limit Handling
OAuthDeviceLimitCallback) and exposed it through FFI and mobile interfaces, allowing the app to authorize device removal without logging the user in. [1] [2] [3] [4] [5] [6] [7]AuthNotifierand the platform channels now support invoking this callback, enabling the UI to authenticate device removal after an OAuth device-limit response. [1] [2]Flutter UI and Deep Link Handling
oauth_login.dart) to detect device-limit responses, extract device info, invoke the new callback, and trigger the device-removal UI, then retry OAuth login after a device is removed. [1] [2] [3]isOAuthCallbackResult) to robustly detect OAuth callback results, including device-limit cases, and updated WebView/deep link handling to use it. [1] [2] [3] [4]Device Limit Flow Refactoring
startDeviceLimitFlowfunction, now used in OAuth, password sign-in, and purchase restoration flows for consistency and maintainability. [1] [2] [3]Code Quality and Consistency
AuthNotifierfor clarity and consistency, improving code readability and maintainability. [1] [2] [3]These changes provide a robust, user-friendly experience for handling device limits during OAuth authentication and unify device-removal logic across the app.
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