Refresh OTA screen in realtime

android/app/src/main/java/com/hyzq/boss/AboutActivity.java

@@ -19,8 +19,12 @@ import androidx.annotation.Nullable;
 import org.json.JSONArray;
 import org.json.JSONObject;
 
+import java.util.LinkedHashMap;
+import java.util.Map;
+
 public class AboutActivity extends BossScreenActivity {
     private static final long OTA_PROGRESS_POLL_INTERVAL_MS = 1_000L;
+    private static final long REALTIME_RELOAD_THROTTLE_MS = 900L;
     private static final String OTA_UI_PREFS = "boss_native_client";
     private static final String KEY_ACTIVE_DOWNLOAD_ID = "ota_active_download_id";
     private static final String KEY_COMPLETED_DOWNLOAD_ID = "ota_completed_download_id";
@@ -38,6 +42,8 @@ public class AboutActivity extends BossScreenActivity {
     private int lastDownloadStatus = -1;
     private long lastDownloadedBytes = 0L;
     private long lastTotalBytes = -1L;
+    private @Nullable BossRealtimeClient realtimeClient;
+    private final Map<String, Long> recentRealtimeEventTimestamps = new LinkedHashMap<>();
     private final Handler otaProgressHandler = new Handler(Looper.getMainLooper());
     private final Runnable otaProgressPoller = new Runnable() {
         @Override
@@ -68,6 +74,7 @@ public class AboutActivity extends BossScreenActivity {
         super.onCreate(savedInstanceState);
         configureScreen("关于", "版本与 OTA 更新");
         restoreDownloadUiState();
+        realtimeClient = new BossRealtimeClient(apiClient, this::handleRealtimeEvent);
         IntentFilter filter = new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE);
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
             registerReceiver(otaDownloadReceiver, filter, Context.RECEIVER_NOT_EXPORTED);
@@ -77,8 +84,21 @@ public class AboutActivity extends BossScreenActivity {
         reload();
     }
 
+    @Override
+    protected void onResume() {
+        super.onResume();
+        updateRealtimeSubscription();
+    }
+
+    @Override
+    protected void onPause() {
+        stopRealtimeUpdates();
+        super.onPause();
+    }
+
     @Override
     protected void onDestroy() {
+        stopRealtimeUpdates();
         otaProgressHandler.removeCallbacks(otaProgressPoller);
         try {
             unregisterReceiver(otaDownloadReceiver);
@@ -111,6 +131,58 @@ public class AboutActivity extends BossScreenActivity {
         });
     }
 
+    private void updateRealtimeSubscription() {
+        if (apiClient != null && apiClient.hasSessionHints() && realtimeClient != null) {
+            realtimeClient.start();
+            return;
+        }
+        stopRealtimeUpdates();
+    }
+
+    private void stopRealtimeUpdates() {
+        if (realtimeClient != null) {
+            realtimeClient.stop();
+        }
+    }
+
+    void handleRealtimeEvent(BossRealtimeEvent event) {
+        if (event == null || event.eventName.isEmpty()) {
+            return;
+        }
+        if (!"ota.updated".equals(event.eventName)) {
+            return;
+        }
+        String eventFingerprint = BossRealtimeClient.buildEventFingerprint(event);
+        if (eventFingerprint.isEmpty()) {
+            return;
+        }
+        long now = System.currentTimeMillis();
+        if (isDuplicateRealtimeEvent(eventFingerprint, now)) {
+            return;
+        }
+        runOnUiThread(this::reload);
+    }
+
+    private boolean isDuplicateRealtimeEvent(String eventFingerprint, long now) {
+        pruneRecentRealtimeEvents(now);
+        Long previousEventAt = recentRealtimeEventTimestamps.get(eventFingerprint);
+        if (previousEventAt != null && now - previousEventAt < REALTIME_RELOAD_THROTTLE_MS) {
+            return true;
+        }
+        recentRealtimeEventTimestamps.put(eventFingerprint, now);
+        return false;
+    }
+
+    private void pruneRecentRealtimeEvents(long now) {
+        java.util.Iterator<Map.Entry<String, Long>> iterator = recentRealtimeEventTimestamps.entrySet().iterator();
+        while (iterator.hasNext()) {
+            Map.Entry<String, Long> entry = iterator.next();
+            if (now - entry.getValue() >= REALTIME_RELOAD_THROTTLE_MS) {
+                iterator.remove();
+            }
+        }
+    }
+
     private void renderAbout(@Nullable JSONObject user, JSONObject ota) {
         replaceContent();
         otaPayload = ota;