feat(chat): add configurable message stats (#1134)

app/src/main/java/com/m57/hermescontrol/ui/settings/SettingsSubPages.kt

@@ -199,6 +199,14 @@ internal fun SettingsChatPage(
                 onTypingEffectDelayMsChange = viewModel::onTypingEffectDelayMsChange,
                 chatFontScale = state.chatFontScale,
                 onChatFontScaleChange = viewModel::onChatFontScaleChange,
+                messageStatsEnabled = state.messageStatsEnabled,
+                onMessageStatsEnabledChange = viewModel::onMessageStatsEnabledChange,
+                showUserMessageTokens = state.showUserMessageTokens,
+                onUserMessageTokensChange = viewModel::onUserMessageTokensChange,
+                showAssistantMessageTokens = state.showAssistantMessageTokens,
+                onAssistantMessageTokensChange = viewModel::onAssistantMessageTokensChange,
+                showTokensPerSecond = state.showTokensPerSecond,
+                onTokensPerSecondChange = viewModel::onTokensPerSecondChange,
             )
         }
     }

app/src/main/java/com/m57/hermescontrol/ui/settings/SettingsViewModel.kt

@@ -38,6 +38,10 @@ data class SettingsUiState(
     val typingEffectEnabled: Boolean = false,
     val typingEffectDelayMs: Int = 30,
     val chatFontScale: Float = 1.0f,
+    val messageStatsEnabled: Boolean = false,
+    val showUserMessageTokens: Boolean = true,
+    val showAssistantMessageTokens: Boolean = true,
+    val showTokensPerSecond: Boolean = true,
     val profiles: List<ConnectionProfile> = emptyList(),
     val selectedProfileId: String? = null,
     val renameProfileName: String = "",
@@ -80,6 +84,10 @@ class SettingsViewModel(
         val typingEffectEnabled = AuthManager.isTypingEffectEnabled()
         val typingEffectDelayMs = AuthManager.getTypingEffectDelayMs()
         val chatFontScale = AuthManager.getChatFontScale()
+        val messageStatsEnabled = AuthManager.isMessageStatsEnabled()
+        val showUserMessageTokens = AuthManager.isUserMessageTokensEnabled()
+        val showAssistantMessageTokens = AuthManager.isAssistantMessageTokensEnabled()
+        val showTokensPerSecond = AuthManager.isTokensPerSecondEnabled()
         val profiles = AuthManager.getConnectionProfiles()
         val appLanguage = AuthManager.getAppLanguage()
         val renameProfileName =
@@ -101,6 +109,10 @@ class SettingsViewModel(
                 typingEffectEnabled = typingEffectEnabled,
                 typingEffectDelayMs = typingEffectDelayMs,
                 chatFontScale = chatFontScale,
+                messageStatsEnabled = messageStatsEnabled,
+                showUserMessageTokens = showUserMessageTokens,
+                showAssistantMessageTokens = showAssistantMessageTokens,
+                showTokensPerSecond = showTokensPerSecond,
                 profiles = profiles,
                 selectedProfileId = selectedId,
                 renameProfileName = renameProfileName,
@@ -327,6 +339,26 @@ class SettingsViewModel(
         AuthManager.setChatFontScale(scale)
     }
 
+    fun onMessageStatsEnabledChange(enabled: Boolean) {
+        _uiState.update { it.copy(messageStatsEnabled = enabled, isSaved = false) }
+        AuthManager.setMessageStatsEnabled(enabled)
+    }
+
+    fun onUserMessageTokensChange(enabled: Boolean) {
+        _uiState.update { it.copy(showUserMessageTokens = enabled, isSaved = false) }
+        AuthManager.setUserMessageTokensEnabled(enabled)
+    }
+
+    fun onAssistantMessageTokensChange(enabled: Boolean) {
+        _uiState.update { it.copy(showAssistantMessageTokens = enabled, isSaved = false) }
+        AuthManager.setAssistantMessageTokensEnabled(enabled)
+    }
+
+    fun onTokensPerSecondChange(enabled: Boolean) {
+        _uiState.update { it.copy(showTokensPerSecond = enabled, isSaved = false) }
+        AuthManager.setTokensPerSecondEnabled(enabled)
+    }
+
     /** Clear all auth credentials — logs out and returns to landing screen. */
     fun logout() {
         AuthManager.setToken(null)
@@ -355,6 +387,10 @@ class SettingsViewModel(
         AuthManager.setThemePreset(state.themePreset)
         AuthManager.setTypingEffectEnabled(state.typingEffectEnabled)
         AuthManager.setTypingEffectDelayMs(state.typingEffectDelayMs)
+        AuthManager.setMessageStatsEnabled(state.messageStatsEnabled)
+        AuthManager.setUserMessageTokensEnabled(state.showUserMessageTokens)
+        AuthManager.setAssistantMessageTokensEnabled(state.showAssistantMessageTokens)
+        AuthManager.setTokensPerSecondEnabled(state.showTokensPerSecond)
         ApiClient.rebuild()
 
         viewModelScope.launch(ioDispatcher) {

app/src/main/java/com/m57/hermescontrol/ui/settings/components/AppearanceSection.kt

@@ -32,6 +32,7 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.Density
@@ -204,6 +205,14 @@ internal fun ChatSection(
     onTypingEffectDelayMsChange: (Int) -> Unit,
     chatFontScale: Float = 1.0f,
     onChatFontScaleChange: (Float) -> Unit = {},
+    messageStatsEnabled: Boolean = false,
+    onMessageStatsEnabledChange: (Boolean) -> Unit = {},
+    showUserMessageTokens: Boolean = true,
+    onUserMessageTokensChange: (Boolean) -> Unit = {},
+    showAssistantMessageTokens: Boolean = true,
+    onAssistantMessageTokensChange: (Boolean) -> Unit = {},
+    showTokensPerSecond: Boolean = true,
+    onTokensPerSecondChange: (Boolean) -> Unit = {},
 ) {
     val fontScaleOptions = listOf(0.85f, 1.0f, 1.15f, 1.30f, 1.50f)
     val currentIndex =
@@ -369,6 +378,53 @@ internal fun ChatSection(
 
         Spacer(modifier = Modifier.height(20.dp))
 
+        Text(
+            text = stringResource(R.string.settings_item_message_stats),
+            style = MaterialTheme.typography.titleMedium,
+        )
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.SpaceBetween,
+            verticalAlignment = Alignment.CenterVertically,
+        ) {
+            Text(
+                text = stringResource(R.string.settings_desc_message_stats),
+                modifier = Modifier.weight(1f),
+                style =
+                    MaterialTheme.typography.bodySmall.copy(
+                        color = MaterialTheme.colorScheme.onSurfaceVariant,
+                    ),
+            )
+            Switch(
+                checked = messageStatsEnabled,
+                onCheckedChange = onMessageStatsEnabledChange,
+                modifier = Modifier.testTag("settings_message_stats"),
+            )
+        }
+        MessageStatsOption(
+            label = stringResource(R.string.settings_item_user_message_tokens),
+            checked = showUserMessageTokens,
+            enabled = messageStatsEnabled,
+            onCheckedChange = onUserMessageTokensChange,
+            testTag = "settings_user_message_tokens",
+        )
+        MessageStatsOption(
+            label = stringResource(R.string.settings_item_assistant_message_tokens),
+            checked = showAssistantMessageTokens,
+            enabled = messageStatsEnabled,
+            onCheckedChange = onAssistantMessageTokensChange,
+            testTag = "settings_assistant_message_tokens",
+        )
+        MessageStatsOption(
+            label = stringResource(R.string.settings_item_tokens_per_second),
+            checked = showTokensPerSecond,
+            enabled = messageStatsEnabled,
+            onCheckedChange = onTokensPerSecondChange,
+            testTag = "settings_tps",
+        )
+
+        Spacer(modifier = Modifier.height(20.dp))
+
         Row(
             modifier = Modifier.fillMaxWidth(),
             horizontalArrangement = Arrangement.SpaceBetween,
@@ -440,3 +496,37 @@ internal fun ChatSection(
         }
     }
 }
+
+@Composable
+private fun MessageStatsOption(
+    label: String,
+    checked: Boolean,
+    enabled: Boolean,
+    onCheckedChange: (Boolean) -> Unit,
+    testTag: String,
+) {
+    Row(
+        modifier = Modifier.fillMaxWidth().padding(start = 12.dp),
+        horizontalArrangement = Arrangement.SpaceBetween,
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        Text(
+            text = label,
+            style =
+                MaterialTheme.typography.bodyMedium.copy(
+                    color =
+                        if (enabled) {
+                            MaterialTheme.colorScheme.onSurface
+                        } else {
+                            MaterialTheme.colorScheme.onSurface.copy(alpha = 0.38f)
+                        },
+                ),
+        )
+        Switch(
+            checked = checked,
+            enabled = enabled,
+            onCheckedChange = onCheckedChange,
+            modifier = Modifier.testTag(testTag),
+        )
+    }
+}