From a2e63de966c70f9f16d9ccac71b256f63195a9e1 Mon Sep 17 00:00:00 2001
From: "Carol A. Scott" <carol@buoyant.io>
Date: Thu, 14 Mar 2019 09:55:09 -0700
Subject: [PATCH] Add "Community" menu item to dashboard that displays
 linkerd.io content (#2476)

Closes #2327.

This PR creates a "Community" menu item on the dashboard sidebar that, when clicked, displays an iFrame of a page on linkerd.io. A yellow badge appears on the menu item if there has been an update since the user last clicked the "Community" menu item. This is calculated by comparing a date in the user's localStorage to a JSON feed at linkerd.io.
---
 web/app/js/components/BreadcrumbHeader.jsx |  1 +
 web/app/js/components/Community.jsx        | 15 +++++++
 web/app/js/components/Navigation.jsx       | 52 +++++++++++++++++++++-
 web/app/js/index.js                        |  4 ++
 web/app/package.json                       |  1 +
 web/app/yarn.lock                          | 22 +++++++++
 web/srv/server.go                          |  1 +
 7 files changed, 95 insertions(+), 1 deletion(-)
 create mode 100644 web/app/js/components/Community.jsx

diff --git a/web/app/js/components/BreadcrumbHeader.jsx b/web/app/js/components/BreadcrumbHeader.jsx
index d61d670d5..4b5c1b0db 100644
--- a/web/app/js/components/BreadcrumbHeader.jsx
+++ b/web/app/js/components/BreadcrumbHeader.jsx
@@ -13,6 +13,7 @@ const routeToCrumbTitle = {
   "tap": "Tap",
   "top": "Top",
   "routes": "Top Routes",
+  "community": "Community",
   "debug": "Debug"
 };
 
diff --git a/web/app/js/components/Community.jsx b/web/app/js/components/Community.jsx
new file mode 100644
index 000000000..72bf43003
--- /dev/null
+++ b/web/app/js/components/Community.jsx
@@ -0,0 +1,15 @@
+import Iframe from 'react-iframe';
+import React from 'react';
+
+const Community = () => {
+  return (
+    <Iframe
+      url="https://linkerd.io/dashboard/"
+      position="inherit"
+      display="block"
+      height="100vh"
+      border="none" />
+  );
+};
+
+export default Community;
diff --git a/web/app/js/components/Navigation.jsx b/web/app/js/components/Navigation.jsx
index bdb82b1e6..b8f3acef9 100644
--- a/web/app/js/components/Navigation.jsx
+++ b/web/app/js/components/Navigation.jsx
@@ -1,5 +1,6 @@
 import { githubIcon, linkerdWordLogo, slackIcon } from './util/SvgWrappers.jsx';
 import AppBar from '@material-ui/core/AppBar';
+import Badge from '@material-ui/core/Badge';
 import BreadcrumbHeader from './BreadcrumbHeader.jsx';
 import BuildIcon from '@material-ui/icons/Build';
 import ChevronLeftIcon from '@material-ui/icons/ChevronLeft';
@@ -22,12 +23,18 @@ import NavigationResources from './NavigationResources.jsx';
 import PropTypes from 'prop-types';
 import React from 'react';
 import ReactRouterPropTypes from 'react-router-prop-types';
+import SentimentVerySatisfiedIcon from '@material-ui/icons/SentimentVerySatisfied';
 import Toolbar from '@material-ui/core/Toolbar';
 import Typography from '@material-ui/core/Typography';
 import Version from './Version.jsx';
+import _maxBy from 'lodash/maxBy';
 import classNames from 'classnames';
 import { withContext } from './util/AppContext.jsx';
 import { withStyles } from '@material-ui/core/styles';
+import yellow from '@material-ui/core/colors/yellow';
+
+const jsonFeedUrl = "https://linkerd.io/dashboard/index.json";
+const localStorageKey = "linkerd-updates-last-clicked";
 
 const styles = theme => {
   const drawerWidth = theme.spacing.unit * 31;
@@ -122,6 +129,9 @@ const styles = theme => {
       fontSize: "18px",
       paddingLeft: "3px",
       paddingRight: "3px",
+    },
+    badge: {
+      backgroundColor: yellow[500],
     }
   };
 };
@@ -131,6 +141,7 @@ class NavigationBase extends React.Component {
     super(props);
     this.api = this.props.api;
     this.handleApiError = this.handleApiError.bind(this);
+    this.handleCommunityClick = this.handleCommunityClick.bind(this);
 
     this.state = this.getInitialState();
   }
@@ -139,6 +150,7 @@ class NavigationBase extends React.Component {
     return {
       drawerOpen: true,
       helpMenuOpen: false,
+      hideUpdateBadge: true,
       latestVersion: '',
       isLatest: true,
       namespaceFilter: "all"
@@ -147,6 +159,7 @@ class NavigationBase extends React.Component {
 
   componentDidMount() {
     this.fetchVersion();
+    this.fetchLatestCommunityUpdate();
   }
 
   fetchVersion() {
@@ -166,12 +179,39 @@ class NavigationBase extends React.Component {
       }).catch(this.handleApiError);
   }
 
+  fetchLatestCommunityUpdate() {
+    this.communityUpdatesPromise = fetch(jsonFeedUrl)
+      .then(rsp => rsp.json())
+      .then(rsp => rsp.data.date)
+      .then(rsp => {
+        if (rsp.length > 0) {
+          let lastClicked = localStorage[localStorageKey];
+          if (!lastClicked) {
+            this.setState({ hideUpdateBadge: false });
+          } else {
+            let lastClickedDateObject = new Date(lastClicked);
+            let latestArticle = _maxBy(rsp, update => update.date);
+            let latestArticleDateObject = new Date(latestArticle);
+            if (latestArticleDateObject > lastClickedDateObject) {
+              this.setState({ hideUpdateBadge: false });
+            }
+          }
+        }
+      }).catch(this.handleApiError);
+  }
+
   handleApiError(e) {
     this.setState({
       error: e
     });
   }
 
+  handleCommunityClick = () => {
+    let lastClicked = new Date();
+    localStorage.setItem(localStorageKey, lastClicked);
+    this.setState({ hideUpdateBadge: true });
+  }
+
   handleDrawerClick = () => {
     this.setState(state => ({ drawerOpen: !state.drawerOpen }));
   };
@@ -180,7 +220,7 @@ class NavigationBase extends React.Component {
     this.setState(state => ({ helpMenuOpen: !state.helpMenuOpen }));
   }
 
-  menuItem(path, title, icon) {
+  menuItem(path, title, icon, onClick) {
     const { classes, api } = this.props;
     let normalizedPath = this.props.location.pathname.replace(this.props.pathPrefix, "");
     let isCurrentPage = path => path === normalizedPath;
@@ -188,6 +228,7 @@ class NavigationBase extends React.Component {
     return (
       <MenuItem
         component={Link}
+        onClick={onClick}
         to={api.prefixLink(path)}
         className={classes.navMenuItem}
         selected={isCurrentPage(path)}>
@@ -196,6 +237,7 @@ class NavigationBase extends React.Component {
       </MenuItem>
     );
   }
+
   render() {
     const { classes, ChildComponent, ...otherProps } = this.props;
 
@@ -245,6 +287,14 @@ class NavigationBase extends React.Component {
               <ListItemIcon><LibraryBooksIcon /></ListItemIcon>
               <ListItemText primary="Documentation" />
             </ListItem>
+            { this.menuItem("/community", "Community",
+              <Badge
+                classes={{ badge: classes.badge }}
+                invisible={this.state.hideUpdateBadge}
+                badgeContent="1">
+                <SentimentVerySatisfiedIcon />
+              </Badge>, this.handleCommunityClick
+              ) }
             <ListItem component="a" href="https://lists.cncf.io/g/cncf-linkerd-users" target="_blank" className={classes.helpMenuItem}>
               <ListItemIcon><EmailIcon /></ListItemIcon>
               <ListItemText primary="Join the Mailing List" />
diff --git a/web/app/js/index.js b/web/app/js/index.js
index 39dc9c3dd..fba9a2e31 100644
--- a/web/app/js/index.js
+++ b/web/app/js/index.js
@@ -6,6 +6,7 @@ import { MuiThemeProvider, createMuiTheme } from '@material-ui/core/styles';
 
 import ApiHelpers from './components/util/ApiHelpers.jsx';
 import AppContext from './components/util/AppContext.jsx';
+import Community from './components/Community.jsx';
 import CssBaseline from '@material-ui/core/CssBaseline';
 import Debug from './components/Debug.jsx';
 import Namespace from './components/Namespace.jsx';
@@ -114,6 +115,9 @@ let applicationHtml = (
               <Route
                 path={`${pathPrefix}/debug`}
                 render={props => <Navigation {...props} ChildComponent={Debug} />} />
+              <Route
+                path={`${pathPrefix}/community`}
+                render={props => <Navigation {...props} ChildComponent={Community} />} />
               <Route component={NoMatch} />
             </Switch>
           </RouterToUrlQuery>
diff --git a/web/app/package.json b/web/app/package.json
index 13c5de6d8..ddf144d24 100644
--- a/web/app/package.json
+++ b/web/app/package.json
@@ -17,6 +17,7 @@
     "prop-types": "15.6.1",
     "react": "16.5.0",
     "react-dom": "16.5.0",
+    "react-iframe": "^1.5.0",
     "react-router": "4.2.0",
     "react-router-dom": "4.2.2",
     "react-router-prop-types": "^1.0.4",
diff --git a/web/app/yarn.lock b/web/app/yarn.lock
index 760973c15..f89decf9a 100644
--- a/web/app/yarn.lock
+++ b/web/app/yarn.lock
@@ -7198,6 +7198,15 @@ prop-types@^15.5.4, prop-types@^15.5.9, prop-types@^15.6.0, prop-types@^15.6.1,
     loose-envify "^1.3.1"
     object-assign "^4.1.1"
 
+prop-types@^15.6.x:
+  version "15.7.2"
+  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.7.2.tgz#52c41e75b8c87e72b9d9360e0206b99dcbffa6c5"
+  integrity sha512-8QQikdH7//R2vurIJSutZ1smHYTcLpRWEOlHnzcWHmBYrOGUysKwSsrC89BCiFj3CbrfJ/nXFdJepOVrY1GCHQ==
+  dependencies:
+    loose-envify "^1.4.0"
+    object-assign "^4.1.1"
+    react-is "^16.8.1"
+
 proxy-addr@~2.0.4:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.4.tgz#ecfc733bf22ff8c6f407fa275327b9ab67e48b93"
@@ -7394,11 +7403,24 @@ react-event-listener@^0.6.2:
     prop-types "^15.6.0"
     warning "^4.0.1"
 
+react-iframe@^1.5.0:
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/react-iframe/-/react-iframe-1.5.0.tgz#20778988cb2782d32663a4537ef0da704dd2b9b2"
+  integrity sha512-hHPK0Os1iQIGD5YVM4N7DMZB9mcWHm+BmY+pSauuaX+NofilONnWUrVbCbrzy0gW6NkDW1ETAmUqlY4mrE9cxg==
+  dependencies:
+    object-assign "^4.1.1"
+    prop-types "^15.6.x"
+
 react-is@^16.3.2, react-is@^16.5.2, react-is@^16.6.3, react-is@^16.7.0:
   version "16.7.0"
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.7.0.tgz#c1bd21c64f1f1364c6f70695ec02d69392f41bfa"
   integrity sha512-Z0VRQdF4NPDoI0tsXVMLkJLiwEBa+RP66g0xDHxgxysxSoCUccSten4RTF/UFvZF1dZvZ9Zu1sx+MDXwcOR34g==
 
+react-is@^16.8.1:
+  version "16.8.3"
+  resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.8.3.tgz#4ad8b029c2a718fc0cfc746c8d4e1b7221e5387d"
+  integrity sha512-Y4rC1ZJmsxxkkPuMLwvKvlL1Zfpbcu+Bf4ZigkHup3v9EfdYhAlWAaVyA19olXq2o2mGn0w+dFKvk3pVVlYcIA==
+
 react-lifecycles-compat@^3.0.2, react-lifecycles-compat@^3.0.4:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/react-lifecycles-compat/-/react-lifecycles-compat-3.0.4.tgz#4f1a273afdfc8f3488a8c516bfda78f872352362"
diff --git a/web/srv/server.go b/web/srv/server.go
index 5ee013ead..8f0e4f9d3 100644
--- a/web/srv/server.go
+++ b/web/srv/server.go
@@ -107,6 +107,7 @@ func NewServer(
 	server.router.GET("/namespaces/:namespace/replicationcontrollers/:replicationcontroller", handler.handleIndex)
 	server.router.GET("/tap", handler.handleIndex)
 	server.router.GET("/top", handler.handleIndex)
+	server.router.GET("/community", handler.handleIndex)
 	server.router.GET("/debug", handler.handleIndex)
 	server.router.GET("/routes", handler.handleIndex)
 	server.router.GET("/profiles/new", handler.handleProfileDownload)