First commit of group-ironmen-tracker-master

group-ironmen-tracker-master/src/main/java/men/groupiron/DepositedItems.java

@@ -0,0 +1,45 @@
+package men.groupiron;
+
+import java.util.Map;
+
+public class DepositedItems {
+    private ItemContainerState items = null;
+    private ItemContainerState consumedItems = null;
+
+    public DepositedItems() {
+    }
+
+    public synchronized void update(ItemContainerState deposited) {
+        if (deposited == null) return;
+        if (items == null || !deposited.whoOwnsThis().equals(items.whoOwnsThis())) {
+            items = deposited;
+        } else {
+            items = items.add(deposited);
+        }
+    }
+
+    public synchronized void consumeState(Map<String, Object> output) {
+        if (items != null) {
+            final String whoOwnsThis = items.whoOwnsThis();
+            final String whoIsUpdating = (String) output.get("name");
+            if (whoOwnsThis != null && whoOwnsThis.equals(whoIsUpdating)) output.put("deposited", items.get());
+        }
+        consumedItems = items;
+        items = null;
+    }
+
+    public synchronized void restoreState() {
+        if (consumedItems == null) return;
+        if (items != null) {
+            items = items.add(consumedItems);
+        } else {
+            items = consumedItems;
+        }
+        consumedItems = null;
+    }
+
+    public synchronized void reset() {
+        items = null;
+        consumedItems = null;
+    }
+}