Add battery optimization badge to Service menu item

Show a theme-colored badge on the Service settings when battery
optimization is not ignored. Also shorten button text to "Ignore".

app/src/main/java/io/nekohasekai/sfa/compose/screen/settings/SettingsScreen.kt

@@ -1,5 +1,7 @@
 package io.nekohasekai.sfa.compose.screen.settings
 
+import android.os.Build
+import android.os.PowerManager
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Column
@@ -31,8 +33,12 @@ import androidx.compose.material3.ListItemDefaults
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
@@ -53,6 +59,15 @@ fun SettingsScreen(navController: NavController) {
     val context = LocalContext.current
     val scope = rememberCoroutineScope()
     val hasUpdate by UpdateState.hasUpdate
+    var isBatteryOptimizationIgnored by remember { mutableStateOf(true) }
+
+    LaunchedEffect(Unit) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+            val pm = context.getSystemService(PowerManager::class.java)
+            isBatteryOptimizationIgnored =
+                pm?.isIgnoringBatteryOptimizations(context.packageName) == true
+        }
+    }
 
     Column(
         modifier =
@@ -140,6 +155,11 @@ fun SettingsScreen(navController: NavController) {
                             tint = MaterialTheme.colorScheme.primary,
                         )
                     },
+                    trailingContent = {
+                        if (!isBatteryOptimizationIgnored) {
+                            Badge(containerColor = MaterialTheme.colorScheme.primary)
+                        }
+                    },
                     modifier = Modifier.clickable { navController.navigate("settings/service") },
                     colors =
                         ListItemDefaults.colors(
@@ -299,17 +319,16 @@ fun SettingsScreen(navController: NavController) {
             }
         }
 
-        // Debug
-        Spacer(modifier = Modifier.height(16.dp))
-
-        Text(
-            text = stringResource(R.string.title_debug),
-            style = MaterialTheme.typography.labelLarge,
-            color = MaterialTheme.colorScheme.primary,
-            modifier = Modifier.padding(horizontal = 32.dp, vertical = 8.dp),
-        )
-
         if (BuildConfig.DEBUG) {
+            // Debug
+            Spacer(modifier = Modifier.height(16.dp))
+
+            Text(
+                text = stringResource(R.string.title_debug),
+                style = MaterialTheme.typography.labelLarge,
+                color = MaterialTheme.colorScheme.primary,
+                modifier = Modifier.padding(horizontal = 32.dp, vertical = 8.dp),
+            )
             Card(
                 modifier =
                     Modifier

app/src/main/res/values/strings.xml

@@ -143,7 +143,7 @@
     <string name="background_permission">Background permission</string>
     <string name="background_permission_description">Apply for the necessary permissions in order for the VPN to function properly.\n\nIf you are using a device made by a Chinese company, the card may not disappear after the permission is granted.</string>
     <string name="read_more">Read More</string>
-    <string name="request_background_permission">Ignore Battery Optimizations</string>
+    <string name="request_background_permission">Ignore</string>
     <string name="import_remote_profile">Import remote profile</string>
     <string name="import_remote_profile_message">Are you sure to import remote profile %1$s? You will connect to %2$s to download the configuration.</string>
     <string name="profile_override">Profile Override</string>