Fixed widget update in some circumstances

app/src/main/java/eu/faircode/email/DaoMessage.java

@@ -332,13 +332,15 @@ public interface DaoMessage {
             " ORDER BY message.received")
     LiveData<List<TupleMessageEx>> liveUnseenNotify();
 
-    @Query("SELECT COUNT(*) AS total" +
+    @Query("SELECT folder, COUNT(*) AS total" +
             ", SUM(ui_seen) AS seen" +
             ", SUM(ui_flagged) AS flagged" +
             " FROM message" +
             " WHERE NOT ui_hide" +
-            " AND message.ui_snoozed IS NULL")
-    LiveData<TupleMessageWidgetCount> liveWidgetUnified();
+            " AND message.ui_snoozed IS NULL" +
+            " GROUP BY folder" +
+            " ORDER BY folder")
+    LiveData<List<TupleMessageWidgetCount>> liveWidgetUnified();
 
     @Query("SELECT message.*" +
             ", account.name AS accountName" +

app/src/main/java/eu/faircode/email/ServiceSynchronize.java

@@ -247,13 +247,25 @@ public class ServiceSynchronize extends ServiceBase {
             }
         });
 
-        db.message().liveWidgetUnified().observe(this, new Observer<TupleMessageWidgetCount>() {
-            private TupleMessageWidgetCount last = null;
+        db.message().liveWidgetUnified().observe(this, new Observer<List<TupleMessageWidgetCount>>() {
+            private List<TupleMessageWidgetCount> last = null;
 
             @Override
-            public void onChanged(TupleMessageWidgetCount current) {
-                Log.i("Widget total=" + current.total + " seen=" + current.seen + " flagged=" + current.flagged);
-                if (last == null || !last.equals(current))
+            public void onChanged(List<TupleMessageWidgetCount> current) {
+                if (current == null)
+                    current = new ArrayList<>();
+
+                boolean changed = false;
+                if (last == null || last.size() != current.size())
+                    changed = true;
+                else
+                    for (int i = 0; i < current.size(); i++)
+                        if (!current.get(i).equals(last.get(i))) {
+                            changed = true;
+                            break;
+                        }
+
+                if (changed)
                     WidgetUnified.update(ServiceSynchronize.this);
 
                 last = current;

app/src/main/java/eu/faircode/email/TupleMessageWidgetCount.java

@@ -22,6 +22,7 @@ package eu.faircode.email;
 import androidx.annotation.Nullable;
 
 public class TupleMessageWidgetCount {
+    public long folder;
     public int total;
     public int seen;
     public int flagged;
@@ -30,7 +31,8 @@ public class TupleMessageWidgetCount {
     public boolean equals(@Nullable Object obj) {
         if (obj instanceof TupleMessageWidgetCount) {
             TupleMessageWidgetCount other = (TupleMessageWidgetCount) obj;
-            return (this.total == other.total &&
+            return (this.folder == other.folder &&
+                    this.total == other.total &&
                     this.seen == other.seen &&
                     this.flagged == other.flagged);
         } else