Core: Show browser not supported notification (#19904)

* display appEvent on load

* move to app.ts, create util and tests

* adding case for ie edge

* Updated browser notice text

public/app/app.ts

@@ -18,7 +18,10 @@ import angular from 'angular';
 import config from 'app/core/config';
 // @ts-ignore ignoring this for now, otherwise we would have to extend _ interface with move
 import _ from 'lodash';
+import { AppEvents, setMarkdownOptions, setLocale } from '@grafana/data';
+import appEvents from 'app/core/app_events';
 import { addClassIfNoOverlayScrollbar } from 'app/core/utils/scrollbar';
+import { checkBrowserCompatibility } from 'app/core/utils/browser';
 import { importPluginModule } from 'app/features/plugins/plugin_loader';
 
 // add move to lodash for backward compatabiltiy
@@ -34,8 +37,6 @@ import { setupAngularRoutes } from 'app/routes/routes';
 
 import 'app/routes/GrafanaCtrl';
 import 'app/features/all';
-import { setLocale } from '@grafana/data';
-import { setMarkdownOptions } from '@grafana/data';
 
 // import symlinked extensions
 const extensionsIndex = (require as any).context('.', true, /extensions\/index.ts/);
@@ -146,6 +147,15 @@ export class GrafanaApp {
       });
 
       this.preBootModules = null;
+
+      if (!checkBrowserCompatibility()) {
+        setTimeout(() => {
+          appEvents.emit(AppEvents.alertWarning, [
+            'Your browser is not fully supported',
+            'A newer browser version is recommended',
+          ]);
+        }, 1000);
+      }
     });
 
     // Preload selected app plugins

public/app/core/utils/browser.test.ts

@@ -0,0 +1,74 @@
+import { checkBrowserCompatibility } from './browser';
+
+const setUserAgentString = (userAgentString: string) => {
+  Object.defineProperty(window.navigator, 'userAgent', {
+    value: userAgentString,
+    configurable: true,
+  });
+};
+
+const setVendor = (vendor: string) => {
+  Object.defineProperty(window.navigator, 'vendor', {
+    value: vendor,
+    configurable: true,
+  });
+};
+
+describe('browser', () => {
+  describe('check compatibility', () => {
+    describe('Chrome', () => {
+      it('should be true for chrome version 77', () => {
+        setUserAgentString(
+          'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36'
+        );
+        setVendor('Google Inc.');
+
+        expect(checkBrowserCompatibility()).toBeTruthy();
+      });
+
+      it('should be false for chrome version <= 54', () => {
+        setUserAgentString(
+          'Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.71 Safari/537.36'
+        );
+        setVendor('Google Inc.');
+
+        expect(checkBrowserCompatibility()).toBeFalsy();
+      });
+    });
+    describe('IE', () => {
+      it('should be false for IE 11', () => {
+        setUserAgentString('Mozilla/5.0 (compatible, MSIE 11, Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko');
+        setVendor('Microsoft');
+
+        expect(checkBrowserCompatibility()).toBeFalsy();
+      });
+    });
+    describe('Edge', () => {
+      it('should be false for Edge <= 16', () => {
+        setUserAgentString(
+          'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.79 Safari/537.36 Edge/14.14393'
+        );
+        setVendor('Microsoft');
+
+        expect(checkBrowserCompatibility()).toBeFalsy();
+      });
+
+      it('should be true for Edge version 44', () => {
+        setUserAgentString(
+          'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36 Edg/44.18362.387.0'
+        );
+        setVendor('Microsoft');
+
+        expect(checkBrowserCompatibility()).toBeTruthy();
+      });
+    });
+    describe('Firefox', () => {
+      it('should be true for version 69', () => {
+        setUserAgentString('Mozilla/5.0 (Windows NT 6.1; WOW64; rv:54.0) Gecko/20100101 Firefox/69.0');
+        setVendor('Firefox');
+
+        expect(checkBrowserCompatibility()).toBeTruthy();
+      });
+    });
+  });
+});

public/app/core/utils/browser.ts

@@ -0,0 +1,31 @@
+// Check to see if browser is not supported by Grafana
+export function checkBrowserCompatibility() {
+  const isIE = navigator.userAgent.indexOf('MSIE') > -1;
+  const isEdge = navigator.userAgent.indexOf('Edge/') > -1 || navigator.userAgent.indexOf('Edg/') > -1;
+  const isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') > -1;
+  const isChrome = /Chrome/.test(navigator.userAgent) && /Google Inc/.test(navigator.vendor);
+
+  /* Check for
+   <= IE11 (Trident 7)
+   Edge <= 16
+   Firefox <= 64
+   Chrome <= 54
+  */
+  const isEdgeVersion = /Edge\/([0-9.]+)/.exec(navigator.userAgent);
+
+  if (isIE && parseFloat(/Trident\/([0-9.]+)/.exec(navigator.userAgent)[1]) <= 7) {
+    return false;
+  } else if (
+    isEdge &&
+    ((isEdgeVersion && parseFloat(isEdgeVersion[1]) <= 16) ||
+      parseFloat(/Edg\/([0-9.]+)/.exec(navigator.userAgent)[1]) <= 16)
+  ) {
+    return false;
+  } else if (isFirefox && parseFloat(/Firefox\/([0-9.]+)/.exec(navigator.userAgent)[1]) <= 64) {
+    return false;
+  } else if (isChrome && parseFloat(/Chrome\/([0-9.]+)/.exec(navigator.userAgent)[1]) <= 54) {
+    return false;
+  }
+
+  return true;
+}