Implemented method to delete a namespace

models/namespace_delete.go

@@ -0,0 +1,43 @@
+package models
+
+func DeleteNamespaceByID(namespaceID int64, doer *User) (err error) {
+
+	// Check if the namespace exists
+	namespace, err := GetNamespaceByID(namespaceID)
+	if err != nil {
+		return
+	}
+
+	// Check if the user is namespace admin
+	err = doer.IsNamespaceAdmin(&namespace)
+	if err != nil {
+		return
+	}
+
+	// Delete the namespace
+	_, err = x.ID(namespaceID).Delete(&Namespace{})
+	if err != nil {
+		return
+	}
+
+	// Delete all lists with their items
+	lists, err := GetListsByNamespaceID(namespaceID)
+	var listIDs []int64
+	for _, list := range lists {
+		listIDs = append(listIDs, list.ID)
+	}
+
+	// Delete items
+	_, err = x.In("list_id", listIDs).Delete(&ListItem{})
+	if err != nil {
+		return
+	}
+
+	// Delete the lists
+	_, err = x.In("id", listIDs).Delete(&List{})
+	if err != nil {
+		return
+	}
+
+	return
+}