feat(InstallScreen): use wakelock while running

app/src/main/AndroidManifest.xml

@@ -2,8 +2,9 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
-  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
   <uses-permission android:name="android.permission.INTERNET" />
+  <uses-permission android:name="android.permission.WAKE_LOCK" />
+  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
   <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
   <uses-permission android:name="android.permission.REQUEST_DELETE_PACKAGES" />
   <uses-permission android:name="android.permission.UPDATE_PACKAGES_WITHOUT_USER_ACTION" />

app/src/main/kotlin/com/aliucord/manager/ui/components/Wakelock.kt

@@ -0,0 +1,39 @@
+package com.aliucord.manager.ui.components
+
+import android.app.Activity
+import android.content.Context
+import android.content.ContextWrapper
+import android.view.WindowManager
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.ui.platform.LocalContext
+
+/**
+ * Maintain an active screen wakelock as long as [active] is true and this component is in scope.
+ */
+@Composable
+fun Wakelock(active: Boolean = false) {
+    val context = LocalContext.current
+    DisposableEffect(active) {
+        val window = context.findActivity()?.window
+
+        if (active) {
+            window?.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+        } else {
+            window?.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+        }
+
+        onDispose {
+            window?.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+        }
+    }
+}
+
+private fun Context.findActivity(): Activity? {
+    var context = this
+    while (context is ContextWrapper) {
+        if (context is Activity) return context
+        context = context.baseContext
+    }
+    return null
+}

app/src/main/kotlin/com/aliucord/manager/ui/screens/install/InstallScreen.kt

@@ -25,6 +25,7 @@ import cafe.adriel.voyager.navigator.LocalNavigator
 import cafe.adriel.voyager.navigator.currentOrThrow
 import com.aliucord.manager.R
 import com.aliucord.manager.installer.steps.StepGroup
+import com.aliucord.manager.ui.components.Wakelock
 import com.aliucord.manager.ui.components.back
 import com.aliucord.manager.ui.components.dialogs.InstallerAbortDialog
 import com.aliucord.manager.ui.screens.install.components.StepGroupCard
@@ -45,6 +46,9 @@ class InstallScreen(private val data: InstallOptions) : Screen {
                 navigator.back(currentActivity = null)
         }
 
+        // Prevent screen from turning off while working
+        Wakelock(active = state.value is InstallScreenState.Working)
+
         // Exit warning dialog (dismiss itself if install process state changes, esp. for Success)
         var showAbortWarning by remember(model.state.collectAsState()) { mutableStateOf(false) }