implemented message on transaction creation/update

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

accounting/src/main/java/de/srsoftware/umbrella/accounting/AccountingModule.java

@@ -222,6 +222,7 @@ public class AccountingModule extends BaseHandler implements AccountingService {
 	private boolean patchTransaction(UmbrellaUser user, long transactionId, HttpExchange ex) throws IOException {
 		var transaction = accountDb.loadTransaction(transactionId);
 		LOG.log(WARNING,"Missing permission check in patchTransaction(…)!");
+		var oldData = transaction.toMap();
 		var json = json(ex);
 		if (json.has(Field.AMOUNT)) transaction.amount(json.getDouble(Field.AMOUNT));
 		if (json.has(Field.DATE)) transaction.date(LocalDate.parse(json.getString(Field.DATE)));
@@ -230,7 +231,7 @@ public class AccountingModule extends BaseHandler implements AccountingService {
 		if (json.has(Field.SOURCE)) transaction.source(IdOrString.of(json.getString(Field.SOURCE)));
 		if (json.has(Field.TAG)) transaction.tags().add(json.getString(Field.TAG));
 		var patched = accountDb.save(transaction);
-		messageBus().dispatch(new TransactionEvent(user,patched,UPDATE));
+		messageBus().dispatch(new TransactionEvent(user,patched,oldData));
 		return sendContent(ex,patched);
 	}
 

bus/src/main/java/de/srsoftware/umbrella/messagebus/events/TransactionEvent.java

@@ -1,6 +1,7 @@
 package de.srsoftware.umbrella.messagebus.events;
 
 import de.srsoftware.umbrella.core.ModuleRegistry;
+import de.srsoftware.umbrella.core.constants.Field;
 import de.srsoftware.umbrella.core.constants.Module;
 import de.srsoftware.umbrella.core.constants.Text;
 import de.srsoftware.umbrella.core.model.Transaction;
@@ -10,9 +11,11 @@ import de.srsoftware.umbrella.core.model.UnTranslatable;
 
 import java.util.Collection;
 import java.util.List;
+import java.util.Map;
 
 import static de.srsoftware.umbrella.core.ModuleRegistry.accountingService;
 import static de.srsoftware.umbrella.core.model.Translatable.t;
+import static java.text.MessageFormat.format;
 
 public class TransactionEvent extends Event<Transaction> {
 	private Collection<UmbrellaUser> audience;
@@ -22,6 +25,11 @@ public class TransactionEvent extends Event<Transaction> {
 		audience = null;
 	}
 
+	public TransactionEvent(UmbrellaUser initiator, Transaction transaction, Map<String, Object> oldData){
+		super(initiator,Module.ACCOUNTING,transaction,oldData);
+	}
+
+
 	@Override
 	public Collection<UmbrellaUser> audience() {
 		if (audience == null) audience = accountingService().loadAccount(payload().accountId()).userMap().values();
@@ -30,14 +38,17 @@ public class TransactionEvent extends Event<Transaction> {
 
 	@Override
 	public Translatable describe() {
-		return new UnTranslatable(payload().purpose());
+		return switch (eventType()){
+			case UPDATE -> new UnTranslatable(diff().orElse(""));
+			case null, default -> new UnTranslatable(payload().toString());
+		};
 	}
 
 	@Override
 	public Translatable subject() {
 		return switch (eventType()){
-			case CREATE -> t("user_created_entity",initiator().name(), Text.TRANSACTION);
-			case UPDATE -> t("user_updated_entity",initiator().name(), Text.TRANSACTION);
+			case CREATE -> t("user_created_entity", Field.USER,initiator().name(), Field.ENTITY, t(Text.TRANSACTION));
+			case UPDATE -> t("user_updated_entity", Field.USER,initiator().name(), Field.ENTITY, t(Text.TRANSACTION));
 			case null, default -> t("TODO"); // TODO
 		};
 	}

core/src/main/java/de/srsoftware/umbrella/core/constants/Field.java

@@ -57,6 +57,7 @@ public class Field {
 	public static final String EDITOR     = "editor";
 	public static final String EMAIL      = "email";
 	public static final String END_TIME   = "end_time";
+	public static final String ENTITY     = "entity";
 	public static final String ENTITY_ID  = "entity_id";
 	public static final String EST_TIME   = "est_time";
 	public static final String EVALUATION = "evaluation";