feat(Flash): Add initial redux logic

common/app/Flash/Flash.jsx

@@ -1,15 +1,28 @@
 import React from 'react';
+import PropTypes from 'prop-types';
 import { CloseButton } from 'react-bootstrap';
+import { connect } from 'react-redux';
+import { createSelector } from 'reselect';
 
 import ns from './ns.json';
+import { alertTypes, latestMessageSelector } from './redux';
 
-const propTypes = {};
+const propTypes = {
-export default function Flash() {
+  alertType: PropTypes.oneOf(Object.keys(alertTypes)),
+  message: PropTypes.string
+};
+const mapStateToProps = latestMessageSelector;
+const mapDispatchToProps = null;
+
+export function Flash({ alertType, message }) {
+  if (!message) {
+    return null;
+  }
   return (
-    <div className={`${ns}-container bg-info`}>
+    <div className={`${ns}-container bg-${alertType}`}>
       <div className={`${ns}-content`}>
         <div>
-          Content
+          { message }
         </div>
         <CloseButton />
       </div>
@@ -19,3 +32,8 @@ export default function Flash() {
 
 Flash.displayName = 'Flash';
 Flash.propTypes = propTypes;
+
+export default connect(
+  mapStateToProps,
+  mapDispatchToProps
+)(Flash);

common/app/Flash/redux/index.js

@@ -1 +1,54 @@
+import { composeReducers } from 'berkeleys-redux-utils';
+import _ from 'lodash/fp';
 
+import ns from '../ns.json';
+
+export const alertTypes = _.keyBy(_.identity)([
+  'success',
+  'info',
+  'warning',
+  'danger'
+]);
+
+export const getFlashAction = _.flow(
+  _.property('meta'),
+  _.property('flash')
+);
+
+export const isFlashAction = _.flow(
+  getFlashAction,
+  Boolean
+);
+
+const defaultState = {
+  stack: [{ alertType: 'danger', message: 'foo bar' }]
+};
+
+const getNS = _.property(ns);
+
+export const latestMessageSelector = _.flow(
+  getNS,
+  _.property('stack'),
+  _.head,
+  _.defaultTo(_.stubObject)
+);
+
+export default composeReducers(
+  ns,
+  function metaReducer(state = defaultState, action) {
+    if (isFlashAction(action)) {
+      const { payload: { alertType, message } } = getFlashAction(action);
+      return {
+        ...state,
+        stack: [
+          ...state.stack,
+          {
+            alertType: alertTypes[alertType] || 'info',
+            message: _.escape(message)
+          }
+        ]
+      };
+    }
+    return state;
+  }
+);

common/app/reducer.js

@@ -8,6 +8,7 @@ import nav from './Nav/redux';
 import routes from './routes/redux';
 import toasts from './Toasts/redux';
 import files from './files';
+import flash from './Flash/redux';
 // not ideal but should go away once we move to react-redux-form
 import { projectNormalizer } from './routes/Challenges/redux';
 
@@ -22,5 +23,6 @@ export default combineReducers(
   routes,
   toasts,
   files,
+  flash,
   _formReducer
 );