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This commit introduces the core functionality for the Man Overboard (MOB) alarm.
Key changes include:
- Added a persistent, high-contrast red MOB Floating Action Button to the UI.
- Implemented dynamic location permission requests and initialization of LocationService.
- Created a MobWaypoint data class to store MOB location and timestamp.
- Developed the activateMob() function to:
- Capture current GPS coordinates.
- Set the active MOB waypoint and mark MOB as activated.
- Switch to a dedicated MOB navigation view, hiding other UI elements.
- Start a continuous, looping audible alarm (assumes R.raw.mob_alarm exists).
- Log the MOB event to the console (placeholder for future logbook integration).
- Implemented a MOB navigation view (ConstraintLayout) with real-time distance to MOB and elapsed time display.
- Added a recoverMob() function, triggered by a 'Recovered' button, to:
- Deactivate MOB mode.
- Stop and release the audible alarm.
- Restore the main UI visibility.
- Location updates are observed to continuously update the MOB navigation display.
- Ensured MediaPlayer resources are properly released on activity destruction.
Future enhancements (not part of this commit) include:
- Implementing a bearing arrow in the MOB navigation view.
- Integrating with a persistent logbook system.
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Implements the wind/current map overlay and 7-day weather forecast
display that loads on application launch:
Data layer:
- Open-Meteo API (free, no key): WeatherApiService + MarineApiService
- Moshi-annotated response models (WeatherResponse, MarineResponse)
- WeatherRepository: parallel async fetch, Result<T> error propagation
- Domain models: WindArrow (with beaufortScale/isCalm) + ForecastItem
(with weatherDescription/isRainy via WMO weather codes)
Presentation layer:
- MainViewModel: StateFlow<UiState> (Loading/Success/Error),
windArrow and forecast streams
- MainActivity: runtime location permission, FusedLocationProvider
GPS fetch on startup, falls back to SF Bay default
- MapFragment: MapLibre GL map with wind-arrow SymbolLayer;
icon rotated by wind direction, size scaled by speed in knots
- ForecastFragment + ForecastAdapter: RecyclerView ListAdapter
showing 7-day hourly forecast (time, description, wind, temp, precip)
Resources:
- ic_wind_arrow.xml vector drawable (north-pointing, rotated by MapLibre)
- BottomNavigationView: Map / Forecast tabs
- ViewBinding enabled throughout
Tests (TDD — written before implementation):
- WindArrowTest: calm detection, direction normalisation, Beaufort scale
- ForecastItemTest: weatherDescription, isRainy for WMO codes
- WeatherApiServiceTest: MockWebServer request params + response parsing
- WeatherRepositoryTest: MockK service mocks, data mapping, error paths
- MainViewModelTest: Turbine StateFlow assertions for all state transitions
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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