Update the alert reducer from switch to map

Switch to immutable while we're here

src/public/js/components/alerts/alert.js

@@ -1,17 +1,16 @@
-import React from 'react'
+import React from "react"
-
+import SweetAlert from "react-bootstrap-sweetalert";
-import SweetAlert from 'react-bootstrap-sweetalert';
 
 export default function Alert(props) {
-  if (!props.alerts.show) {
+  if (!props.alerts.get("show")) {
     return null
   }
 
   return (
     <SweetAlert
-      type={props.alerts.type}
+      type={props.alerts.get("type")}
+      title={props.alerts.get("message")}
       onConfirm={props.dismissAlert}
-      title={props.alerts.message}
     />
   )
 }

src/public/js/reducers/alerts.js

@@ -1,30 +1,29 @@
-const defaultState = {
+import { Map } from "immutable"
+
+const defaultState = Map({
   show: false,
   message: "",
   type: "",
-};
+});
 
-export default function Alert(state = defaultState, action) {
+
-  switch (action.type) {
+const handlers = {
-    case 'ADD_ALERT_ERROR':
+  "ADD_ALERT_ERROR": (state, action) => state.merge(Map({
-      return Object.assign({}, state, {
+    message: action.payload.message,
-        message: action.payload.message,
+    show: true,
-        show: true,
+    type: "error",
-        type: "error",
+  })),
-      })
+  "ADD_ALERT_OK": (state, action) => state.merge(Map({
-    case 'ADD_ALERT_OK':
-      return Object.assign({}, state, {
         message: action.payload.message,
         show: true,
         type: "success",
-      })
+  })),
-    case 'DISMISS_ALERT':
+  "DISMISS_ALERT": state => state.merge(Map({
-      return Object.assign({}, state, {
         message: "",
         show: false,
         type: "",
-      })
+  })),
-    default:
-      return state;
-  }
 }
+
+export default (state = defaultState, action) =>
+  handlers[action.type] ? handlers[action.type](state, action) : state;