1 files changed, 25 insertions, 0 deletions
diff --git a/app/javascript/mastodon/reducers/alerts.js b/app/javascript/mastodon/reducers/alerts.js
new file mode 100644
index 000000000..dc0145824
--- /dev/null
+++ b/app/javascript/mastodon/reducers/alerts.js
@@ -0,0 +1,25 @@
+import {
+  ALERT_SHOW,
+  ALERT_DISMISS,
+  ALERT_CLEAR
+} from '../actions/alerts';
+import Immutable from 'immutable';
+
+const initialState = Immutable.List([]);
+
+export default function alerts(state = initialState, action) {
+  switch(action.type) {
+  case ALERT_SHOW:
+    return state.push(Immutable.Map({
+      key: state.size > 0 ? state.last().get('key') + 1 : 0,
+      title: action.title,
+      message: action.message
+    }));
+  case ALERT_DISMISS:
+    return state.filterNot(item => item.get('key') === action.alert.key);
+  case ALERT_CLEAR:
+    return state.clear();
+  default:
+    return state;
+  }
+};