restructure listIdentities

Now returns a complete dictionary (array of dictionary entries) rather
then a list of one-entry dictionaries.

man/signal-cli-dbus.5.adoc

@@ -193,13 +193,13 @@ setContactName(number<s>,name<>) -> <>::
 
 listIdentities() -> identities<a{sv}>::
 * contactNumber  : Phone number of contact
-* identities     : Array of dictionaries with key contactNumber and values listed below
+* identities     : Array of dictionary entries with key contactNumber and values listed below
 ** trustLevel    : String representation of trust level
 ** dateAdded     : String representation of date added
 ** fingerprint   : String representation of hexadecimal fingerprint
 ** safetyNumber  : String representation of safety number (10 or 11 space-separated six-digit numbers)
 
-Returns an array of dictionaries for all contacts (obtained by listNumbers() and screened to exclude those with no identity information). For each dictionary, the key is the contactNumber and the value is a list of four strings: trustLevel, dateAdded, fingerprint, safetyNumber.
+Returns an array of dictionary entries for all contacts (obtained by listNumbers() and screened to exclude those with no identity information). For each dictionary, the key is the contactNumber and the value is a list of four strings: trustLevel, dateAdded, fingerprint, safetyNumber.
 
 Exceptions: None
 

src/main/java/org/asamk/Signal.java

@@ -65,7 +65,7 @@ public interface Signal extends DBusInterface {
             String emoji, boolean remove, String targetAuthor, long targetSentTimestamp, byte[] groupId
     ) throws Error.GroupNotFound, Error.Failure, Error.InvalidNumber, Error.InvalidGroupId;
 
-    List<Map<String, Variant<?>>> listIdentities();
+    Map<String, Variant<?>> listIdentities();
 
     Map<String, Variant<?>> listIdentities(String number) throws Error.InvalidNumber;
 

src/main/java/org/asamk/signal/dbus/DbusSignalImpl.java

@@ -300,16 +300,17 @@ public class DbusSignalImpl implements Signal {
     }
 
     @Override
-    public List<Map<String, Variant<?>>> listIdentities() {
+    public Map<String, Variant<?>> listIdentities() {
         List<String> numbers = listNumbers();
-        List<Map<String, Variant<?>>> results = new ArrayList<>();
+        Map<String, Variant<?>> result = new HashMap<>();
+        if (numbers.isEmpty()) {return result;}
         for (String number:numbers) {
             Map<String, Variant<?>> identity = listIdentities(number);
             if (! identity.isEmpty()) {
-                results.add(identity);
+                result.put(number, identity.get(number));
             }
         }
-        return results;
+        return result;
     }
 
     @Override