Fix/foreground permissions scanning (#556)

* try catch the foreground location service if not available

* ask for background permissions

* background permissions in onboarding

* small improvements

app/src/main/java/com/bitchat/android/onboarding/PermissionManager.kt

@@ -7,6 +7,7 @@ import android.os.Build
 import android.os.PowerManager
 import android.util.Log
 import androidx.core.content.ContextCompat
+import com.bitchat.android.R
 
 /**
  * Centralized permission management for bitchat app
@@ -40,7 +41,8 @@ class PermissionManager(private val context: Context) {
     }
 
     /**
-     * Get all permissions required by the app
+     * Get required permissions that can be requested together.
+     * Background location is handled separately to ensure correct request order.
      * Note: Notification permission is optional and not included here,
      * so the app works without notification access.
      */
@@ -72,6 +74,27 @@ class PermissionManager(private val context: Context) {
         return permissions
     }
 
+    /**
+     * Background location permission is required on Android 10+ for background BLE scanning.
+     * Must be requested after foreground location permissions are granted.
+     */
+    fun needsBackgroundLocationPermission(): Boolean {
+        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q
+    }
+
+    fun getBackgroundLocationPermission(): String? {
+        return if (needsBackgroundLocationPermission()) {
+            Manifest.permission.ACCESS_BACKGROUND_LOCATION
+        } else {
+            null
+        }
+    }
+
+    fun isBackgroundLocationGranted(): Boolean {
+        val permission = getBackgroundLocationPermission() ?: return true
+        return isPermissionGranted(permission)
+    }
+
     /**
      * Get optional permissions that improve the experience but aren't required.
      * Currently includes POST_NOTIFICATIONS on Android 13+.
@@ -93,9 +116,13 @@ class PermissionManager(private val context: Context) {
     }
 
     /**
-     * Check if all required permissions are granted
+     * Check if all required permissions are granted (background location is optional).
      */
     fun areAllPermissionsGranted(): Boolean {
+        return areRequiredPermissionsGranted()
+    }
+
+    fun areRequiredPermissionsGranted(): Boolean {
         return getRequiredPermissions().all { isPermissionGranted(it) }
     }
 
@@ -131,6 +158,11 @@ class PermissionManager(private val context: Context) {
         return getRequiredPermissions().filter { !isPermissionGranted(it) }
     }
 
+    fun getMissingBackgroundLocationPermission(): List<String> {
+        val permission = getBackgroundLocationPermission() ?: return emptyList()
+        return if (isPermissionGranted(permission)) emptyList() else listOf(permission)
+    }
+
     /**
      * Get categorized permission information for display
      */
@@ -177,6 +209,19 @@ class PermissionManager(private val context: Context) {
             )
         )
 
+        if (needsBackgroundLocationPermission()) {
+            val backgroundPermission = listOf(Manifest.permission.ACCESS_BACKGROUND_LOCATION)
+            categories.add(
+                PermissionCategory(
+                    type = PermissionType.BACKGROUND_LOCATION,
+                    description = context.getString(R.string.perm_background_location_desc),
+                    permissions = backgroundPermission,
+                    isGranted = backgroundPermission.all { isPermissionGranted(it) },
+                    systemDescription = context.getString(R.string.perm_background_location_system)
+                )
+            )
+        }
+
         // Notifications category (if applicable)
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
             categories.add(
@@ -216,7 +261,7 @@ class PermissionManager(private val context: Context) {
             appendLine("Permission Diagnostics:")
             appendLine("Android SDK: ${Build.VERSION.SDK_INT}")
             appendLine("First time launch: ${isFirstTimeLaunch()}")
-            appendLine("All permissions granted: ${areAllPermissionsGranted()}")
+            appendLine("Required permissions granted: ${areAllPermissionsGranted()}")
             appendLine()
             
             getCategorizedPermissions().forEach { category ->
@@ -228,7 +273,7 @@ class PermissionManager(private val context: Context) {
                 appendLine()
             }
             
-            val missing = getMissingPermissions()
+            val missing = getMissingPermissions() + getMissingBackgroundLocationPermission()
             if (missing.isNotEmpty()) {
                 appendLine("Missing permissions:")
                 missing.forEach { permission ->
@@ -260,6 +305,7 @@ data class PermissionCategory(
 enum class PermissionType(val nameValue: String) {
     NEARBY_DEVICES("Nearby Devices"),
     PRECISE_LOCATION("Precise Location"),
+    BACKGROUND_LOCATION("Background Location"),
     MICROPHONE("Microphone"),
     NOTIFICATIONS("Notifications"),
     BATTERY_OPTIMIZATION("Battery Optimization"),