18368: Notification banner first implementation

[arvados-workbench2.git] / src / store / banner / banner-reducer.ts

diff --git a/src/store/banner/banner-reducer.ts b/src/store/banner/banner-reducer.ts
new file mode 100644 (file)
index 0000000..8009f4b
--- /dev/null
+++ b/src/store/banner/banner-reducer.ts
@@ -0,0 +1,26 @@
+// Copyright (C) The Arvados Authors. All rights reserved.
+//
+// SPDX-License-Identifier: AGPL-3.0
+
+import { BannerAction, bannerReducerActions } from "./banner-action";
+
+export interface BannerState {
+    isOpen: boolean;
+}
+
+const initialState = {
+    isOpen: false,
+};
+
+export const bannerReducer = (state: BannerState = initialState, action: BannerAction) =>
+    bannerReducerActions.match(action, {
+        default: () => state,
+        OPEN_BANNER: () => ({
+             ...state,
+             isOpen: true,
+        }),
+        CLOSE_BANNER: () => ({
+            ...state,
+            isOpen: false,
+       }),
+    });