feat(app): add Ktor HTTP client and SyncService for inventory sync
domain/model/SyncError.kt:
- Sealed class with ConnectionError, Timeout, AuthError, ServerError,
NotConfigured, Unknown subtypes for typed error handling
domain/repository/SyncService.kt:
- Interface with downloadInventory() and uploadInventory() returning
Result<InventoryDto> for clean error propagation
data/sync/SyncServiceImpl.kt:
- Ktor Client implementation using OkHttp engine
- GET /api/inventory and PUT /api/inventory endpoints
- X-API-Key header authentication matching server contract
- Server URL and API key read from SettingsRepository
- withContext(Dispatchers.IO) for network calls
- Catches SocketTimeoutException, ConnectException specifically
di/NetworkModule.kt:
- Hilt module providing singleton HttpClient with OkHttp engine
- ContentNegotiation with kotlinx.serialization JSON
- Configurable connect/read/write timeouts (10s/30s/30s)
- Binds SyncServiceImpl to SyncService interface
Dependencies:
- ktor-client-core, ktor-client-okhttp,
ktor-client-content-negotiation, ktor-client-mock (test)
- ktor-serialization-kotlinx-json (shared with server)
- INTERNET permission added to AndroidManifest.xml
Tests: 9 tests with Ktor MockEngine covering success, 401, 500,
missing config, trailing slash URL normalization
Closes #44
215790d68e