Build native UI shell foundation

shared/src/androidMain/kotlin/com/vnidrop/app/logging/PlatformLogStore.android.kt

@@ -0,0 +1,56 @@
+package com.vnidrop.app.logging
+
+import java.io.File
+import java.nio.charset.StandardCharsets
+
+actual fun createPlatformLogStore(appDataDir: String, policy: LogRotationPolicy): PlatformLogStore =
+	AndroidPlatformLogStore(appDataDir, policy)
+
+actual fun platformNowMillis(): Long = System.currentTimeMillis()
+
+private class AndroidPlatformLogStore(
+	appDataDir: String,
+	private val policy: LogRotationPolicy,
+) : PlatformLogStore {
+	private val directory = File(appDataDir, "logs")
+	private val activeFile = File(directory, "app.log")
+
+	override val logDirectory: String = directory.absolutePath
+
+	@Synchronized
+	override fun append(line: String) {
+		directory.mkdirs()
+		val bytes = line.toByteArray(StandardCharsets.UTF_8)
+		if (policy.shouldRotate(activeFile.length(), bytes.size.toLong())) {
+			rotate()
+		}
+		activeFile.appendBytes(bytes)
+	}
+
+	@Synchronized
+	override fun listLogFiles(): List<LogFileInfo> {
+		directory.mkdirs()
+		return directory
+			.listFiles { file -> file.isFile && file.name.startsWith("app") && file.name.endsWith(".log") }
+			.orEmpty()
+			.sortedByDescending { it.lastModified() }
+			.map { file -> LogFileInfo(file.name, file.absolutePath, file.length(), file.lastModified()) }
+	}
+
+	private fun rotate() {
+		if (policy.maxFiles == 0) {
+			activeFile.delete()
+			return
+		}
+		File(directory, "app.${policy.maxFiles}.log").delete()
+		for (index in policy.maxFiles - 1 downTo 1) {
+			val source = File(directory, "app.$index.log")
+			if (source.exists()) {
+				source.renameTo(File(directory, "app.${index + 1}.log"))
+			}
+		}
+		if (activeFile.exists()) {
+			activeFile.renameTo(File(directory, "app.1.log"))
+		}
+	}
+}

shared/src/androidMain/kotlin/com/vnidrop/app/platform/PlatformSystemAppearance.android.kt

@@ -0,0 +1,40 @@
+package com.vnidrop.app.platform
+
+import android.app.Activity
+import android.os.Build
+import android.view.View
+import android.view.WindowInsetsController
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.SideEffect
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.toArgb
+import androidx.compose.ui.platform.LocalView
+
+@Composable
+actual fun PlatformSystemAppearance(isDarkTheme: Boolean) {
+	val view = LocalView.current
+	if (view.isInEditMode) return
+
+	SideEffect {
+		val window = (view.context as? Activity)?.window ?: return@SideEffect
+		window.statusBarColor = Color.Transparent.toArgb()
+		window.navigationBarColor = Color.Transparent.toArgb()
+		val useDarkIcons = systemBarIconModeForTheme(isDarkTheme) == SystemBarIconMode.DarkIcons
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+			val lightBars = WindowInsetsController.APPEARANCE_LIGHT_STATUS_BARS or
+				WindowInsetsController.APPEARANCE_LIGHT_NAVIGATION_BARS
+			window.insetsController?.setSystemBarsAppearance(if (useDarkIcons) lightBars else 0, lightBars)
+		} else {
+			var flags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
+				View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN or
+				View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+			if (useDarkIcons) {
+				flags = flags or View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR
+				if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+					flags = flags or View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR
+				}
+			}
+			window.decorView.systemUiVisibility = flags
+		}
+	}
+}