implemented creating new stock items

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

core/src/main/java/de/srsoftware/umbrella/core/model/DbLocation.java

@@ -90,6 +90,7 @@ public class DbLocation extends Location {
 	@Override
 	public Map<String, Object> toMap() {
 		var map = super.toMap();
+		if (description == null) description = "";
 		map.put(OWNER,owner.toMap());
 		map.put(NAME,name);
 		map.put(DESCRIPTION,Map.of(SOURCE,description,RENDERED,markdown(description)));

core/src/main/java/de/srsoftware/umbrella/core/model/Item.java

@@ -18,7 +18,7 @@ public class Item implements Mappable {
 	private Collection<Property> properties;
 	private Set<String> dirtyFields = new HashSet<>();
 
-	private Item(long id, Owner owner, long ownerNumber, Location location, String code, String name) {
+	public Item(long id, Owner owner, long ownerNumber, Location location, String code, String name) {
 		this.id = id;
 		this.owner = owner;
 		this.ownerNumber = ownerNumber;
@@ -45,6 +45,11 @@ public class Item implements Mappable {
 		return id;
 	}
 
+	public Item id(long newVal) {
+		id = newVal;
+		return this;
+	}
+
 	public Location location(){
 		return location;
 	}
@@ -73,6 +78,10 @@ public class Item implements Mappable {
 		return owner;
 	}
 
+	public long ownerNumber(){
+		return ownerNumber;
+	}
+
 	public Item patch(JSONObject json) {
 		for (var field : json.keySet()){
 			var known = true;
@@ -103,6 +112,7 @@ public class Item implements Mappable {
 		map.put(LOCATION,location.toMap());
 		map.put(CODE,code);
 		map.put(NAME,name);
+		map.put(OWNER_NUMBER,ownerNumber);
 		if (properties != null) map.put(PROPERTIES,properties.stream().map(Property::toMap).toList());
 		return map;
 	}

frontend/src/routes/stock/ItemList.svelte

@@ -8,11 +8,13 @@
 
     async function saveNewItem(){
         newItem.location = location;
-        console.log(JSON.parse(JSON.stringify(newItem)));
         const url = api('stock/item');
-        const res = post(url,newItem);
+        const res = await post(url,newItem);
         if (res.ok) {
             yikes();
+            const it = await res.json();
+            console.log(it);
+            items = [...items, it];
         } else error(res);
     }
 </script>
@@ -27,7 +29,7 @@
     <tbody>
     {#each items as item}
     <tr onclick={ev => selected = item} ondragstart={e => drag_start(item)} draggable="true">
-        <td>{item.id}</td>
+        <td title={`db id: ${item.id}`}>{item.owner_number}</td>
         <td>{item.code}</td>
         <td>{item.name}</td>
     </tr>

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

@@ -16,6 +16,7 @@ import static java.text.MessageFormat.format;
 
 import de.srsoftware.tools.jdbc.Query;
 import de.srsoftware.umbrella.core.BaseDb;
+import de.srsoftware.umbrella.core.api.Owner;
 import de.srsoftware.umbrella.core.model.*;
 import de.srsoftware.umbrella.core.model.Location;
 import java.sql.Connection;
@@ -272,6 +273,18 @@ public class SqliteDb extends BaseDb implements StockDb {
 		}
 	}
 
+	@Override
+	public long nextItemNumberFor(Owner owner) {
+		try {
+			var rs = select("max(owner_number)").from(TABLE_ITEMS).where(OWNER,equal(owner.dbCode())).exec(db);
+			long number = rs.next() ? rs.getLong(1) : 0;
+			rs.close();
+			return number +1L;
+		} catch (SQLException e) {
+			throw databaseException("Failed to read last item number for {0}",owner);
+		}
+	}
+
 	private void replaceItemsTable() throws SQLException {
 		db.prepareStatement(format("DROP TABLE {0}",TABLE_ITEMS)).execute();
 		db.prepareStatement(format("ALTER TABLE {0} RENAME TO {1}","items_temp",TABLE_ITEMS)).execute();
@@ -320,8 +333,17 @@ public class SqliteDb extends BaseDb implements StockDb {
 
 	@Override
 	public Item save(Item item) {
-		if (item.id() == 0){ // TODO
+		if (item.id() == 0){
-			LOG.log(ERROR,"StockDb.save(…) not implemented!");
+			try {
+				var rs = insertInto(TABLE_ITEMS, OWNER, OWNER_NUMBER, CODE, NAME, LOCATION_ID)
+						.values(item.owner().dbCode(), item.ownerNumber(), item.code(), item.name(), item.location().id())
+						.execute(db).getGeneratedKeys();
+				if (rs.next()) item.id(rs.getLong(1));
+				rs.close();
+				return item;
+			} catch (SQLException e) {
+				throw databaseException("Failed to save new item to database!");
+			}
 		} else if (item.isDirty()) {
 			try {
 				var location = item.location();

stock/src/main/java/de/srsoftware/umbrella/stock/StockDb.java

@@ -1,6 +1,7 @@
 /* © SRSoftware 2025 */
 package de.srsoftware.umbrella.stock;
 
+import de.srsoftware.umbrella.core.api.Owner;
 import de.srsoftware.umbrella.core.model.*;
 import de.srsoftware.umbrella.core.model.Location;
 import java.util.Collection;
@@ -18,4 +19,6 @@ public interface StockDb {
 	DbLocation save(DbLocation location);
 	Item       save(Item item);
 	Property   setProperty(long itemId, long existingPropId, Object value);
+
+	long nextItemNumberFor(Owner owner);
 }

stock/src/main/java/de/srsoftware/umbrella/stock/StockModule.java

@@ -267,7 +267,13 @@ public class StockModule extends BaseHandler implements StockService {
 		var json = json(ex);
 		if (!json.has(NAME) || !(json.get(NAME) instanceof String name)) throw missingFieldException(NAME);
 		if (!json.has(CODE) || !(json.get(CODE) instanceof String code)) throw missingFieldException(CODE);
-
+		if (!json.has(LOCATION) || !(json.get(LOCATION) instanceof JSONObject locationData)) throw missingFieldException(LOCATION);
+		var location = stockDb.loadLocation(locationData.getLong(ID));
+		var owner = location.owner().resolve();
+		if (!assigned(owner,user)) throw forbidden("You are not allowed to add items to {0}!",location);
+		var number = stockDb.nextItemNumberFor(owner);
+		var newItem = new Item(0,owner,number,location,code,name);
+		return sendContent(ex,stockDb.save(newItem));
 	}
 
 	private boolean postLocation(UmbrellaUser user, HttpExchange ex) throws IOException {