Changes dark mode in the main activity based on the settings

app/build.gradle.kts

@@ -136,7 +136,7 @@ dependencies {
         exclude(group = "com.google.firebase", module = "firebase-crashlytics")
     }
 
-    implementation(projects.feature.settingsCore)
+    implementation(projects.feature.main)
 }
 
 

app/src/main/kotlin/com/mobiledevpro/app/MainActivity.kt

@@ -3,14 +3,31 @@ package com.mobiledevpro.app
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
 import androidx.core.view.WindowCompat
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import com.mobiledevpro.app.di.mainModule
 import com.mobiledevpro.app.ui.MainApp
+import com.mobiledevpro.di.koinScope
+import com.mobiledevpro.main.view.state.MainUIState
+import com.mobiledevpro.main.view.vm.MainViewModel
 import com.mobiledevpro.ui.theme.AppTheme
 import org.koin.compose.KoinContext
+import org.koin.core.context.loadKoinModules
+import kotlin.getValue
 
 class MainActivity : ComponentActivity() {
 
+    private val viewModel: MainViewModel by koinScope<MainActivity>().inject()
+
+    init {
+        loadKoinModules(mainModule)
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         installSplashScreen()
         super.onCreate(savedInstanceState)
@@ -19,9 +36,17 @@ class MainActivity : ComponentActivity() {
         WindowCompat.setDecorFitsSystemWindows(window, false)
 
         setContent {
-            // val darkModeState by darkModeState.collectAsStateWithLifecycle()
+            val uiState by viewModel.uiState.collectAsStateWithLifecycle()
+
+            var darkMode by remember { mutableStateOf(true) }
+
+            if (uiState is MainUIState.Success) {
+                (uiState as MainUIState.Success).settings.let {
+                    darkMode = it.darkMode
+                }
+            }
 
-            AppTheme(darkTheme = true) {
+            AppTheme(darkTheme = darkMode) {
                 KoinContext {
                     MainApp()
                 }

app/src/main/kotlin/com/mobiledevpro/app/di/Module.kt

@@ -17,12 +17,24 @@
  */
 package com.mobiledevpro.app.di
 
+import com.mobiledevpro.app.MainActivity
+import com.mobiledevpro.main.view.vm.MainViewModel
 import com.mobiledevpro.settings.core.datastore.AppSettingsManager
 import com.mobiledevpro.settings.core.datastore.ImplAppSettingsManager
+import com.mobiledevpro.settings.core.usecase.GetAppSettingsUseCase
 import org.koin.core.module.dsl.bind
+import org.koin.core.module.dsl.scopedOf
 import org.koin.core.module.dsl.singleOf
+import org.koin.core.module.dsl.viewModelOf
 import org.koin.dsl.module
 
 val coreModule = module {
     singleOf(::ImplAppSettingsManager) { bind<AppSettingsManager>() }
-}
+}
+
+val mainModule = module {
+    scope<MainActivity> {
+        viewModelOf(::MainViewModel)
+        scopedOf(::GetAppSettingsUseCase)
+    }
+}

feature/main/build.gradle.kts

@@ -1,3 +1,7 @@
 plugins {
     id("feature-module")
+}
+
+dependencies {
+    api(projects.feature.settingsCore)
 }

feature/main/src/main/AndroidManifest.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest />

feature/main/src/main/kotlin/com/mobiledevpro/main/view/state/MainUIState.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2023 | Dmitri Chernysh | https://mobile-dev.pro
+ *
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+package com.mobiledevpro.main.view.state
+
+import com.mobiledevpro.settings.core.model.Settings
+import com.mobiledevpro.ui.state.UIState
+
+
+sealed interface MainUIState : UIState {
+    data object Empty : MainUIState
+
+    data class Success(
+        val settings: Settings
+    ) : MainUIState
+}

feature/main/src/main/kotlin/com/mobiledevpro/main/view/vm/MainViewModel.kt

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2023 | Dmitri Chernysh | https://mobile-dev.pro
+ *
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+package com.mobiledevpro.main.view.vm
+
+import androidx.lifecycle.viewModelScope
+import com.mobiledevpro.main.view.state.MainUIState
+import com.mobiledevpro.settings.core.usecase.GetAppSettingsUseCase
+import com.mobiledevpro.ui.vm.BaseViewModel
+import kotlinx.coroutines.flow.collectLatest
+import kotlinx.coroutines.launch
+import kotlin.onSuccess
+
+
+class MainViewModel(
+    private val getAppSettingsUseCase: GetAppSettingsUseCase
+) : BaseViewModel<MainUIState>() {
+
+    override fun initUIState(): MainUIState = MainUIState.Empty
+
+    init {
+        observeSettings()
+    }
+
+    private fun observeSettings() {
+        viewModelScope.launch {
+            getAppSettingsUseCase.execute()
+                .collectLatest { result ->
+                    result.onSuccess { settings ->
+                        _uiState.value = MainUIState.Success(settings)
+                    }
+                }
+        }
+    }
+}