Share exported files safely and show background transfer progress

tools/chatgui-android/app/src/main/AndroidManifest.xml

@@ -40,6 +40,14 @@
             <meta-data android:name="autoStoreLocales" android:value="true" />
         </service>
 
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="${applicationId}.memberfiles"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data android:name="android.support.FILE_PROVIDER_PATHS" android:resource="@xml/member_files_paths" />
+        </provider>
+
         <activity
             android:name=".MainActivity"
             android:exported="true"

tools/chatgui-android/app/src/main/java/com/utun/chat/headless/HeadlessService.kt

@@ -16,6 +16,7 @@ import com.utun.chat.data.LogManager
 import com.utun.chat.data.NativeLib
 import com.utun.chat.data.NetworkActivityMonitor
 import com.utun.chat.data.NetworkChangeMonitor
+import com.utun.chat.data.fileStatusResource
 
 class HeadlessService : Service() {
     companion object {
@@ -27,6 +28,11 @@ class HeadlessService : Service() {
                 service.getSystemService(NotificationManager::class.java).notify(1, service.notification())
             }
         }
+        fun refreshFiles() {
+            currentService?.let { service ->
+                service.getSystemService(NotificationManager::class.java).notify(1, service.notification())
+            }
+        }
     }
 
     override fun onCreate() {
@@ -67,23 +73,43 @@ class HeadlessService : Service() {
     override fun onBind(intent: Intent?): IBinder? = null
 
     override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        if (intent?.action == "com.utun.chat.CANCEL_FILES") {
+            ChatApplication.instance.memberFiles.cancel()
+            return START_STICKY
+        }
         val source = if (intent == null) "sticky_restart" else intent.action ?: "manual"
         LogManager.addLog("INFO", "SRV", "Service start command: source=$source startId=$startId flags=$flags ready=${NativeLib.isReady()}")
         return START_STICKY
     }
 
     private fun notification(): android.app.Notification {
+        val operation = ChatApplication.instance.memberFiles.operation.value
         val intent = Intent(this, MainActivity::class.java)
+        operation?.let { op ->
+            intent.putExtra("files_group", op.location.group).putExtra("files_server", op.location.server)
+                .putExtra("files_owner", op.location.owner).putExtra("files_path", op.location.path)
+        }
         val pendingIntent = PendingIntent.getActivity(this, 0, intent,
             PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT)
-        return NotificationCompat.Builder(AppLanguage.context(), "utun_channel")
+        val builder = NotificationCompat.Builder(AppLanguage.context(), "utun_channel")
             .setContentTitle("vibechat")
             .setContentText(AppLanguage.text(R.string.service_notification))
             .setSmallIcon(android.R.drawable.ic_dialog_info)
             .setContentIntent(pendingIntent)
             .setOngoing(true)
             .setOnlyAlertOnce(true)
-            .build()
+        if (operation != null) {
+            val detail = operation.status?.let { AppLanguage.text(fileStatusResource(it)) } ?: AppLanguage.text(operation.stage)
+            builder.setContentText("${operation.name}: $detail")
+            if (operation.active) {
+                val percent = if (operation.total == 0L) 0 else (operation.done.toDouble() * 100 / operation.total).toInt()
+                builder.setProgress(100, percent, operation.total == 0L)
+                val cancel = PendingIntent.getService(this, 21, Intent(this, HeadlessService::class.java)
+                    .setAction("com.utun.chat.CANCEL_FILES"), PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT)
+                builder.addAction(android.R.drawable.ic_menu_close_clear_cancel, AppLanguage.text(R.string.cancel), cancel)
+            }
+        }
+        return builder.build()
     }
 
     private fun createNotificationChannel() {

tools/chatgui-android/app/src/main/res/xml/member_files_paths.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths xmlns:android="http://schemas.android.com/apk/res/android">
+    <cache-path name="member_files" path="member_files/" />
+</paths>