1 files changed, 26 insertions, 0 deletions
diff --git a/service/pixelated/adapter/services/tag_service.py b/service/pixelated/adapter/services/tag_service.py
new file mode 100644
index 00000000..c723b04c
--- /dev/null
+++ b/service/pixelated/adapter/services/tag_service.py
@@ -0,0 +1,26 @@
+#
+# Copyright (c) 2014 ThoughtWorks, Inc.
+#
+# Pixelated is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Pixelated is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with Pixelated. If not, see <http://www.gnu.org/licenses/>.
+from pixelated.adapter.model.tag import Tag
+
+
+class TagService:
+
+    instance = None
+    SPECIAL_TAGS = {Tag('inbox', True), Tag('sent', True), Tag('drafts', True), Tag('trash', True)}
+
+    @classmethod
+    def extract_reserved(cls, tags):
+        return {tag.name for tag in cls.SPECIAL_TAGS if tag.name in tags}