init

app/src/main/java/cc/n0th1ng/tripmoney/viewmodel/SettingsViewModel.kt

@@ -0,0 +1,69 @@
+package cc.n0th1ng.tripmoney.viewmodel
+
+import android.app.UiModeManager
+import android.content.Context
+import android.os.Build
+import androidx.annotation.RequiresApi
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
+import androidx.lifecycle.viewModelScope
+import cc.n0th1ng.tripmoney.data.repository.AppTheme
+import cc.n0th1ng.tripmoney.data.repository.PreferencesRepository
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.stateIn
+import kotlinx.coroutines.launch
+import javax.inject.Inject
+
+@HiltViewModel
+class SettingsViewModel @Inject constructor(
+    private val repo: PreferencesRepository,
+    @ApplicationContext private val context: Context
+) : ViewModel() {
+    private val uiModeManager: UiModeManager =
+        context.getSystemService(Context.UI_MODE_SERVICE) as UiModeManager
+    val theme = repo.themeFlow
+        .stateIn(
+            viewModelScope,
+            SharingStarted.WhileSubscribed(5000),
+            AppTheme.SYSTEM
+        )
+
+    val currentTrip = repo.currentTripFlow.stateIn(
+        viewModelScope, SharingStarted.WhileSubscribed(5000),
+        -1
+    )
+
+    fun setCurrentTrip(tripId: Int) {
+        viewModelScope.launch {
+            repo.saveCurrentTrip(tripId)
+        }
+    }
+
+    @RequiresApi(Build.VERSION_CODES.S)
+    fun setTheme(theme: AppTheme) {
+        applyTheme(theme)
+
+        viewModelScope.launch {
+            repo.saveTheme(theme)
+        }
+    }
+
+    @RequiresApi(Build.VERSION_CODES.S)
+    private fun applyTheme(theme: AppTheme) {
+        when (theme) {
+            AppTheme.LIGHT ->
+                uiModeManager.setApplicationNightMode(UiModeManager.MODE_NIGHT_NO)
+
+            AppTheme.DARK ->
+                uiModeManager.setApplicationNightMode(UiModeManager.MODE_NIGHT_YES)
+
+            AppTheme.SYSTEM ->
+                uiModeManager.setApplicationNightMode(UiModeManager.MODE_NIGHT_AUTO)
+        }
+    }
+}
+
+
+