Fix WebSocket events being silently dropped on buffer overflow (#313)

* Fix WebSocket events being silently dropped on buffer overflow

Increases the MutableSharedFlow `extraBufferCapacity` from 64 to 256
and changes the `onBufferOverflow` policy to `BufferOverflow.DROP_OLDEST`
in `HermesWsClient.kt`. This fixes an issue where the slow collection
(e.g., due to DB writes) caused the buffer to fill up and silently drop
incoming real-time WebSocket events.

By setting `DROP_OLDEST`, `tryEmit()` remains functional without
suspending, allowing real-time events to be retained and prioritized.

Fixes #275

* Fix ktlint formatting issues in HermesWsClient.kt

The formatting changes adhere to ktlint rules required by the CI pipeline:
- Removed a trailing comma in MutableSharedFlow initialization to avoid multiline expression wrapping errors.
- Sorted imports to be in lexicographical order.

These formatting changes fix the failing CI check.

Fixes #275

* Fix WebSocket events being silently dropped on buffer overflow

Increases the MutableSharedFlow `extraBufferCapacity` from 64 to 256
and changes the `onBufferOverflow` policy to `BufferOverflow.DROP_OLDEST`
in `HermesWsClient.kt`. This fixes an issue where the slow collection
(e.g., due to DB writes) caused the buffer to fill up and silently drop
incoming real-time WebSocket events.

By setting `DROP_OLDEST`, `tryEmit()` remains functional without
suspending, allowing real-time events to be retained and prioritized.

Fixes #275

* Fix WebSocket events being silently dropped on buffer overflow

Increases the MutableSharedFlow extraBufferCapacity from 64 to 256
and changes the onBufferOverflow policy to BufferOverflow.DROP_OLDEST
in HermesWsClient.kt. This fixes an issue where the slow collection
(e.g., due to DB writes) caused the buffer to fill up and silently drop
incoming real-time WebSocket events.

By setting DROP_OLDEST, tryEmit() remains functional without
suspending, allowing real-time events to be retained and prioritized.

Fixes #275

* Fix WebSocket events being silently dropped on buffer overflow

Increases the MutableSharedFlow extraBufferCapacity from 64 to 256
and changes the onBufferOverflow policy to BufferOverflow.DROP_OLDEST
in HermesWsClient.kt. This fixes an issue where the slow collection
(e.g., due to DB writes) caused the buffer to fill up and silently drop
incoming real-time WebSocket events.

By setting DROP_OLDEST, tryEmit() remains functional without
suspending, allowing real-time events to be retained and prioritized.

Fixes #275

* Fix WebSocket events being silently dropped on buffer overflow

Increases the MutableSharedFlow extraBufferCapacity from 64 to 256
and changes the onBufferOverflow policy to BufferOverflow.DROP_OLDEST
in HermesWsClient.kt. This fixes an issue where the slow collection
(e.g., due to DB writes) caused the buffer to fill up and silently drop
incoming real-time WebSocket events.

By setting DROP_OLDEST, tryEmit() remains functional without
suspending, allowing real-time events to be retained and prioritized.

Fixes #275

---------

Co-authored-by: M57 <hy4ri@users.noreply.github.com>

app/src/test/java/com/m57/hermescontrol/ui/connect/ConnectViewModelTest.kt

@@ -220,6 +220,35 @@ class ConnectViewModelTest {
             viewModel.connect()
             advanceUntilIdle()
 
+            verify { AuthManager.setToken(null) }
+
+            val state = viewModel.uiState.value
+            assertFalse(state.isConnecting)
+            assertFalse(state.connectionSuccess)
+            assertEquals("Invalid token (401 Unauthorized)", state.errorMessage)
+        }
+
+    @Test
+    fun testConnect_failure_unauthorized_clearsProfileToken() =
+        runTest {
+            every { AuthManager.getSelectedProfileId() } returns "prof-1"
+
+            val viewModel = ConnectViewModel(mockApp)
+            viewModel.onTokenChange("invalid-token")
+            viewModel.onHostChange("127.0.0.1")
+            viewModel.onPortChange("9119")
+
+            val mockResponse = mockk<Response<StatusResponse>>()
+            every { mockResponse.isSuccessful } returns false
+            every { mockResponse.code() } returns 401
+            coEvery { mockApiService.getStatus() } returns mockResponse
+
+            viewModel.connect()
+            advanceUntilIdle()
+
+            verify { AuthManager.setToken(null) }
+            verify { AuthManager.setProfileToken("prof-1", null) }
+
             val state = viewModel.uiState.value
             assertFalse(state.isConnecting)
             assertFalse(state.connectionSuccess)
@@ -584,12 +613,14 @@ class ConnectViewModelTest {
             val viewModel = ConnectViewModel(mockApp)
             viewModel.onPairingString("hermes://connect?host=192.168.1.1&port=8888&token=abc123")
 
+            // Wait for parsing coroutine to finish
+            advanceUntilIdle()
+
             val state = viewModel.uiState.value
             assertEquals("192.168.1.1", state.host)
             assertEquals("8888", state.port)
             assertEquals("abc123", state.token)
             // Should have triggered connect
-            advanceUntilIdle()
             assertTrue("connection should succeed after pairing", viewModel.uiState.value.connectionSuccess)
         }
 }