Display conversations in unified inbox widget

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

@@ -274,6 +274,8 @@ public interface DaoMessage {
     LiveData<List<TupleMessageEx>> liveUnseenNotify();
 
     String widget = "SELECT message.*, account.name AS accountName" +
+            ", SUM(1 - message.ui_seen) AS unseen" +
+            ", MAX(message.received) AS dummy" +
             " FROM message" +
             " JOIN account ON account.id = message.account" +
             " JOIN folder ON folder.id = message.folder" +
@@ -281,12 +283,15 @@ public interface DaoMessage {
             " AND folder.unified" +
             " AND message.ui_hide = 0" +
             " AND message.ui_snoozed IS NULL" +
+            " GROUP BY account.id, CASE WHEN message.thread IS NULL THEN message.id ELSE message.thread END" +
             " ORDER BY message.received DESC";
 
     @Query(widget)
+    @SuppressWarnings(RoomWarnings.CURSOR_MISMATCH)
     LiveData<List<TupleMessageWidget>> liveWidgetUnified();
 
     @Query(widget)
+    @SuppressWarnings(RoomWarnings.CURSOR_MISMATCH)
     List<TupleMessageWidget> getWidgetUnified();
 
     @Query("SELECT COUNT(message.id) FROM message" +

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

@@ -202,7 +202,7 @@ public class ServiceSynchronize extends ServiceBase {
                                 !MessageHelper.equal(m1.from, m2.from) ||
                                 !m1.received.equals(m2.received) ||
                                 !Objects.equals(m1.subject, m2.subject) ||
-                                !(m1.ui_seen == m2.ui_seen) ||
+                                !(m1.unseen == m2.unseen) ||
                                 !Objects.equals(m1.accountName, m2.accountName)) {
                             changed = true;
                             break;

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

@@ -23,12 +23,15 @@ import java.util.Objects;
 
 public class TupleMessageWidget extends EntityMessage {
     public String accountName;
+    public int unseen;
 
     @Override
     public boolean equals(Object obj) {
         if (obj instanceof TupleMessageEx) {
             TupleMessageEx other = (TupleMessageEx) obj;
-            return (super.equals(obj) && Objects.equals(this.accountName, other.accountName));
+            return (super.equals(obj) &&
+                    Objects.equals(this.accountName, other.accountName) &&
+                    this.unseen == other.unseen);
         }
         return false;
     }

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

@@ -81,7 +81,11 @@ public class WidgetUnifiedRemoteViewsFactory implements RemoteViewsService.Remot
             thread.putExtra("id", message.id);
             views.setOnClickFillInIntent(R.id.llMessage, thread);
 
-            SpannableString from = new SpannableString(MessageHelper.formatAddressesShort(message.from));
+            String froms = MessageHelper.formatAddressesShort(message.from);
+            if (message.unseen > 1)
+                froms = context.getString(R.string.title_name_count, froms, Integer.toString(message.unseen));
+
+            SpannableString from = new SpannableString(froms);
             SpannableString time = new SpannableString(Helper.getRelativeTimeSpanString(context, message.received));
             SpannableString subject = new SpannableString(TextUtils.isEmpty(message.subject) ? "" : message.subject);
             SpannableString account = new SpannableString(TextUtils.isEmpty(message.accountName) ? "" : message.accountName);