implemented transaction propagation via event bus

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

accounting/build.gradle.kts

@@ -1,5 +1,6 @@
 description = "Umbrella : Accounting"
 
 dependencies{
+    implementation(project(":bus"))
     implementation(project(":core"))
 }

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

@@ -10,6 +10,9 @@ import static de.srsoftware.umbrella.core.Util.mapValues;
 import static de.srsoftware.umbrella.core.constants.Path.*;
 import static de.srsoftware.umbrella.core.exceptions.UmbrellaException.invalidField;
 import static de.srsoftware.umbrella.core.exceptions.UmbrellaException.missingField;
+import static de.srsoftware.umbrella.messagebus.MessageBus.messageBus;
+import static de.srsoftware.umbrella.messagebus.events.Event.EventType.CREATE;
+import static de.srsoftware.umbrella.messagebus.events.Event.EventType.UPDATE;
 import static java.lang.System.Logger.Level.WARNING;
 
 import com.sun.net.httpserver.HttpExchange;
@@ -27,6 +30,9 @@ import java.io.IOException;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.util.*;
+
+import de.srsoftware.umbrella.messagebus.events.Event;
+import de.srsoftware.umbrella.messagebus.events.TransactionEvent;
 import org.json.JSONArray;
 import org.json.JSONObject;
 
@@ -177,6 +183,14 @@ public class AccountingModule extends BaseHandler implements AccountingService {
 
 	private boolean getAccount(UmbrellaUser user, long accountId, HttpExchange ex) throws IOException {
 		LOG.log(WARNING,"Missing authorization check in AccountingModule.getAccount(…)!");
+		return sendContent(ex, loadAccount(accountId));
+	}
+
+	private boolean getAccounts(UmbrellaUser user, HttpExchange ex) throws IOException {
+		return sendContent(ex,accountDb.listAccounts(user.id()).stream().map(Account::toMap));
+	}
+
+	public AccountData loadAccount(long accountId){
 		var account      = accountDb.loadAccount(accountId);
 		var transactions = accountDb.loadTransactions(account);
 		var userMap      = new HashMap<Long,UmbrellaUser>();
@@ -193,20 +207,9 @@ public class AccountingModule extends BaseHandler implements AccountingService {
 				if (!userMap.containsKey(userId)) userMap.put(destination.id(),userService().loadUser(userId));
 			}
 		}
-
-		return sendContent(ex, Map.of(
-				Field.ACCOUNT,account.toMap(),
-				Field.TRANSACTIONS,transactions.stream().map(Transaction::toMap).toList(),
-				Field.USER_LIST,mapValues(userMap)
-		));
+		return AccountData.of(account, transactions, userMap);
 	}
 
-	private boolean getAccounts(UmbrellaUser user, HttpExchange ex) throws IOException {
-		return sendContent(ex,accountDb.listAccounts(user.id()).stream().map(Account::toMap));
-	}
-
-
-
 	private static boolean noNumbers(String s){
 		try {
 			Long.parseLong(s);
@@ -226,7 +229,9 @@ public class AccountingModule extends BaseHandler implements AccountingService {
 		if (json.has(Field.PURPOSE)) transaction.purpose(json.getString(Field.PURPOSE));
 		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));
-		return sendContent(ex,accountDb.save(transaction));
+		var patched = accountDb.save(transaction);
+		messageBus().dispatch(new TransactionEvent(user,patched,UPDATE));
+		return sendContent(ex,patched);
 	}
 
 	private boolean postEntry(UmbrellaUser user, HttpExchange ex) throws IOException {
@@ -291,7 +296,7 @@ public class AccountingModule extends BaseHandler implements AccountingService {
 
 
 		var transaction = accountDb.save(new Transaction(0,accountId,dateTime,source,destination,amount.doubleValue(),purpose,tags));
-
+		messageBus().dispatch(new TransactionEvent(user,transaction, CREATE));
 		return sendContent(ex,newAccount != null ? newAccount : transaction);
 	}
 

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

@@ -10,6 +10,8 @@ import static de.srsoftware.umbrella.accounting.Constants.*;
 import static de.srsoftware.umbrella.core.constants.Field.*;
 import static de.srsoftware.umbrella.core.exceptions.UmbrellaException.*;
 import static de.srsoftware.umbrella.core.model.Translatable.t;
+import static de.srsoftware.umbrella.messagebus.MessageBus.messageBus;
+import static de.srsoftware.umbrella.messagebus.events.Event.EventType.UPDATE;
 import static java.text.MessageFormat.format;
 
 import de.srsoftware.tools.jdbc.Condition;
@@ -19,6 +21,8 @@ import de.srsoftware.umbrella.core.constants.Field;
 import de.srsoftware.umbrella.core.constants.Text;
 import de.srsoftware.umbrella.core.model.Account;
 import de.srsoftware.umbrella.core.model.Transaction;
+import de.srsoftware.umbrella.messagebus.events.TransactionEvent;
+
 import java.sql.Connection;
 import java.sql.SQLException;
 import java.time.ZoneOffset;