implemented deletion of times

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

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

@@ -10,6 +10,7 @@ import static de.srsoftware.umbrella.time.Constants.*;
 import static java.lang.System.Logger.Level.ERROR;
 import static java.text.MessageFormat.format;
 
+import de.srsoftware.tools.jdbc.Query;
 import de.srsoftware.umbrella.core.BaseDb;
 import de.srsoftware.umbrella.core.exceptions.UmbrellaException;
 import de.srsoftware.umbrella.core.model.Time;
@@ -77,7 +78,20 @@ CREATE TABLE IF NOT EXISTS {0} (
         }
     }
 
-    @Override
+	@Override
+	public Long delete(long timeId) {
+		try {
+			db.setAutoCommit(false);
+			Query.delete().from(TABLE_TASK_TIMES).where(TIME_ID,equal(timeId)).execute(db);
+			Query.delete().from(TABLE_TIMES).where(ID,equal(timeId)).execute(db);
+			db.setAutoCommit(false);
+			return timeId;
+		} catch (SQLException e) {
+			throw UmbrellaException.databaseException("Failed to delete time with id = {0}",timeId);
+		}
+	}
+
+	@Override
 	public HashMap<Long,Time> listTimes(Collection<Long> taskIds, boolean showClosed) throws UmbrellaException {
 		try {
 			var rs = select(ALL).from(TABLE_TASK_TIMES).where(TASK_ID,in(taskIds.toArray())).exec(db);

time/src/main/java/de/srsoftware/umbrella/time/TimeDb.java

@@ -7,6 +7,8 @@ import java.util.Collection;
 import java.util.HashMap;
 
 public interface TimeDb {
+	Long delete(long timeId);
+
 	HashMap<Long,Time> listTimes(Collection<Long> taskIds, boolean showClosed) throws UmbrellaException;
 
 	HashMap<Long,Time>  listUserTimes(long userId, boolean showClosed);

time/src/main/java/de/srsoftware/umbrella/time/TimeModule.java

@@ -34,6 +34,32 @@ public class TimeModule extends BaseHandler implements TimeService {
 		timeDb = new SqliteDb(connect(dbFile));
 	}
 
+
+	private boolean deleteTime(UmbrellaUser user, long timeId, HttpExchange ex) throws IOException {
+		var time = timeDb.load(timeId);
+		if (time.userId() != user.id()) throw forbidden("You are not allowed to delete this time!");
+		timeDb.delete(timeId);
+		return sendContent(ex,time);
+	}
+
+
+	@Override
+	public boolean doDelete(Path path, HttpExchange ex) throws IOException {
+		addCors(ex);
+		try {
+			Optional<Token> token = SessionToken.from(ex).map(Token::of);
+			var user = userService().loadUser(token);
+			if (user.isEmpty()) return unauthorized(ex);
+			var head = path.pop();
+			var timeId = Long.parseLong(head);
+			return deleteTime(user.get(),timeId,ex);
+		} catch (NumberFormatException e){
+			return send(ex,invalidFieldException(TIME_ID,"long value"));
+		} catch (UmbrellaException e){
+			return send(ex,e);
+		}
+	}
+
 	@Override
 	public boolean doGet(Path path, HttpExchange ex) throws IOException {
 		addCors(ex);