# WristCode watch app

SwiftUI, watch only, Swift 6 with strict concurrency, and no dependencies. It talks to the gateway
over HTTPS + JSON as described in [docs/api.md](../docs/api.md); `WristCode/API/Models.swift`
mirrors [gateway/src/contract.ts](../gateway/src/contract.ts).

## Build and test

```sh
cd watch
xcodegen generate            # the .xcodeproj is generated and gitignored
xcodebuild -scheme WristCode -destination 'platform=watchOS Simulator,name=Apple Watch Series 12 (46mm)' build
xcodebuild -scheme WristCode -destination 'platform=watchOS Simulator,name=Apple Watch Series 12 (46mm)' test
```

## TestFlight

The App Store only takes a watch-only app inside an empty iOS stub, so `project.yml` has two app
targets, the same pair Xcode's "Watch-only App" template makes:

| Target | Bundle ID | Job |
| --- | --- | --- |
| `WristCodeContainer` | `org.gbrown.wristcode` | iOS stub that owns the App Store Connect record and embeds the watch app |
| `WristCode` | `org.gbrown.wristcode.watchkitapp` | The watch app, and the APNs topic |
| `WristCodeWidget` | `org.gbrown.wristcode.watchkitapp.widget` | The complication, embedded in the watch app |

```sh
scripts/testflight.sh              # archive, export and upload to App Store Connect
scripts/testflight.sh --no-upload  # archive and export an .ipa to build/export-<n> only
```

The build number defaults to a `YYYYMMDDHHMM` timestamp (override it with `BUILD_NUMBER`). Signing is
automatic through the App Store Connect API key in `ASC_KEY_PATH`, `ASC_KEY_ID` and `ASC_ISSUER_ID`,
which default to the key in `~/.appstoreconnect/private_keys`. The entitlements file says
`aps-environment: development`; the App Store export re-signs it as `production`. Release builds
register their token with the gateway as `production`, Debug builds as `sandbox`.

## Demo mode

`DemoGateway` serves fixture data shaped like the docs/api.md examples, and it reacts to writes:
Allow moves a thread to working, a reply restarts a finished thread. The SwiftUI previews use it,
the pairing screen has a "Try the demo" button, and launch arguments open a screen directly:

```sh
xcrun simctl launch <udid> org.gbrown.wristcode.watchkitapp -demo                                # feed
xcrun simctl launch <udid> org.gbrown.wristcode.watchkitapp -demo -thread littleman/t-next       # thread
xcrun simctl launch <udid> org.gbrown.wristcode.watchkitapp -demo -screen new                    # new thread
```

`screenshots/` holds the screens captured this way. The complication and the multi-select question
are rendered by `SnapshotTests` instead, which only run when given a directory:

```sh
TEST_RUNNER_WC_SCREENSHOT_DIR=$PWD/screenshots xcodebuild -scheme WristCode \
  -destination 'platform=watchOS Simulator,name=Apple Watch Series 12 (46mm)' test \
  -only-testing:WristCodeTests/SnapshotTests
```

In demo mode the complication shows the demo counts too.

## Complication

`WristCodeWidget` shows how many threads wait on you, from `GET /v1/summary`, in the circular,
rectangular, inline and corner families. Tapping it opens the app, at the longest-waiting thread when
there is one (`wristcode://thread/<hostId>/<threadId>`). WidgetKit refreshes it about every 15 minutes;
the app reloads it sooner when its feed counts change, when a push arrives in the foreground, and
after a notification action.

The app and the extension share the App Group `group.org.gbrown.wristcode`. The device token and
gateway URL live in that group's Keychain access group, and the demo flag and last summary in its
defaults. Builds before the complication kept the token in the app's own Keychain group;
`DeviceStore.migrateToSharedGroup()` moves it on launch, so a paired watch stays paired.

To add it: long-press the watch face, Edit, swipe to Complications, pick a slot, then WristCode.

## Layout

| Path | Job |
| --- | --- |
| `WristCodeApp.swift` | App entry, root navigation, `WKApplicationDelegate` for APNs registration |
| `AppModel.swift` | Paired, demo or unpaired; navigation path; the feed; 401 sends you back to pairing |
| `API/GatewayClient.swift` | `GatewayAPI` protocol and the URLSession client |
| `API/Models.swift` | Codable mirror of the contract |
| `API/Route.swift` | Screens the app can open, and their `wristcode://` URLs |
| `Auth/DeviceStore.swift` | Device token and gateway URL in the shared Keychain group |
| `Shared/SharedState.swift` | Demo flag and last summary in the App Group, for the complication |
| `Demo/DemoGateway.swift` | In-memory gateway with fixtures |
| `Views/` | Pair, Feed, Thread, New thread, and the mock B theme |
| `Notifications/NotificationHandler.swift` | Categories `approval`, `finished`, `failed`, `input`, `host` and their actions |
| `../WristCodeWidget/` | The complication: timeline provider, and one view per family |