Fix system bar colors for dark theme (#368)

* Add computed properties for ThemePreference enum

* Fix system bar colors for dark theme

app/src/main/java/com/bitchat/android/ui/AboutSheet.kt

@@ -153,17 +153,17 @@ fun AboutSheet(
                         )
                         Row(horizontalArrangement = Arrangement.spacedBy(8.dp)) {
                             FilterChip(
-                                selected = themePref == com.bitchat.android.ui.theme.ThemePreference.System,
+                                selected = themePref.isSystem,
                                 onClick = { com.bitchat.android.ui.theme.ThemePreferenceManager.set(context, com.bitchat.android.ui.theme.ThemePreference.System) },
                                 label = { Text("system", fontFamily = FontFamily.Monospace) }
                             )
                             FilterChip(
-                                selected = themePref == com.bitchat.android.ui.theme.ThemePreference.Light,
+                                selected = themePref.isLight,
                                 onClick = { com.bitchat.android.ui.theme.ThemePreferenceManager.set(context, com.bitchat.android.ui.theme.ThemePreference.Light) },
                                 label = { Text("light", fontFamily = FontFamily.Monospace) }
                             )
                             FilterChip(
-                                selected = themePref == com.bitchat.android.ui.theme.ThemePreference.Dark,
+                                selected = themePref.isDark,
                                 onClick = { com.bitchat.android.ui.theme.ThemePreferenceManager.set(context, com.bitchat.android.ui.theme.ThemePreference.Dark) },
                                 label = { Text("dark", fontFamily = FontFamily.Monospace) }
                             )

app/src/main/java/com/bitchat/android/ui/theme/Theme.kt

@@ -1,13 +1,20 @@
 package com.bitchat.android.ui.theme
 
+import android.app.Activity
+import android.os.Build
+import android.view.View
+import android.view.WindowInsetsController
 import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.darkColorScheme
 import androidx.compose.material3.lightColorScheme
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.SideEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.toArgb
+import androidx.compose.ui.platform.LocalView
 
 // Colors that match the iOS bitchat theme
 private val DarkColorScheme = darkColorScheme(
@@ -55,6 +62,27 @@ fun BitchatTheme(
 
     val colorScheme = if (shouldUseDark) DarkColorScheme else LightColorScheme
 
+    val view = LocalView.current
+    SideEffect {
+        (view.context as? Activity)?.window?.let { window ->
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+                window.insetsController?.setSystemBarsAppearance(
+                    if (!shouldUseDark) WindowInsetsController.APPEARANCE_LIGHT_STATUS_BARS else 0,
+                    WindowInsetsController.APPEARANCE_LIGHT_STATUS_BARS
+                )
+            } else {
+                @Suppress("DEPRECATION")
+                window.decorView.systemUiVisibility = if (!shouldUseDark) {
+                    View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR
+                } else 0
+            }
+            window.navigationBarColor = colorScheme.background.toArgb()
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+                window.isNavigationBarContrastEnforced = false
+            }
+        }
+    }
+
     MaterialTheme(
         colorScheme = colorScheme,
         typography = Typography,

app/src/main/java/com/bitchat/android/ui/theme/ThemePreference.kt

@@ -8,7 +8,13 @@ import kotlinx.coroutines.flow.StateFlow
  * App theme preference: System default, Light, or Dark.
  */
 enum class ThemePreference {
-    System, Light, Dark
+    System,
+    Light,
+    Dark;
+
+    val isSystem : Boolean get() = this == System
+    val isLight : Boolean get() = this == Light
+    val isDark : Boolean get() = this == Dark
 }
 
 /**