Use theme stored in realm

app/src/main/java/com/infomaniak/swisstransfer/ui/theme/Theme.kt

@@ -23,13 +23,18 @@ import androidx.compose.material3.LocalTextStyle
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.runtime.*
 import androidx.compose.ui.graphics.Color
+import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import com.infomaniak.multiplatform_swisstransfer.common.models.Theme
+import com.infomaniak.swisstransfer.ui.screen.main.settings.SettingsViewModel
 
 val LocalCustomTypography = staticCompositionLocalOf { Typography }
 val LocalCustomColorScheme: ProvidableCompositionLocal<CustomColorScheme> = staticCompositionLocalOf { CustomColorScheme() }
 
 @Composable
 fun SwissTransferTheme(
-    darkTheme: Boolean = isDarkTheme(),
+    settingsViewModel: SettingsViewModel = hiltViewModel<SettingsViewModel>(),
+    darkTheme: Boolean = isDarkTheme(settingsViewModel),
     content: @Composable () -> Unit,
 ) {
     val customColors = if (darkTheme) CustomDarkColorScheme else CustomLightColorScheme
@@ -47,10 +52,11 @@ fun SwissTransferTheme(
 }
 
 @Composable
-fun isDarkTheme(): Boolean {
-    // rememberMutableStateOf
-    // TODO check in realm. If system, isSystemDark, otherwise,
-    return isSystemInDarkTheme()
+fun isDarkTheme(settingsViewModel: SettingsViewModel): Boolean {
+    val appSettings by settingsViewModel.appSettingsFlow.collectAsStateWithLifecycle(null)
+    return appSettings?.let {
+        if (it.theme == Theme.SYSTEM) isSystemInDarkTheme() else it.theme == Theme.DARK
+    } ?: isSystemInDarkTheme()
 }
 
 object SwissTransferTheme {