Add event id for BSOD email url

src/components/ui/bsod/BSoD.js

@@ -1,9 +1,8 @@
 // @flow
 import React from 'react';
-
 import { FormattedMessage as Message } from 'react-intl';
-
 import { IntlProvider } from 'components/i18n';
+import logger from 'services/logger';
 import appInfo from 'components/auth/appInfo/AppInfo.intl.json';
 
 import styles from './styles.scss';
@@ -12,7 +11,38 @@ import messages from './BSoD.intl.json';
 
 // TODO: probably it is better to render this view from the App view
 // to remove dependencies from store and IntlProvider
-export default function BSoD({store}: {store: *}) {
+export default class BSoD extends React.Component<{
+    store: Object
+}, {
+    lastEventId?: string,
+}> {
+    state = {};
+
+    componentDidMount() {
+        // poll for event id
+        const timer = setInterval(() => {
+            if (!logger.getLastEventId()) {
+                return;
+            }
+
+            clearInterval(timer);
+
+            this.setState({
+                lastEventId: logger.getLastEventId()
+            });
+        }, 500);
+    }
+
+    render() {
+        const {store} = this.props;
+        const {lastEventId} = this.state;
+
+        let emailUrl = 'mailto:support@ely.by';
+
+        if (lastEventId) {
+            emailUrl += `?subject=Bug report for #${lastEventId}`;
+        }
+
         return (
             <IntlProvider store={store}>
                 <div className={styles.body}>
@@ -30,7 +60,7 @@ export default function BSoD({store}: {store: *}) {
                         <div className={styles.line}>
                             <Message {...messages.reloadPageOrContactUs} />
                         </div>
-                    <a href="mailto:support@ely.by" className={styles.support}>
+                        <a href={emailUrl} className={styles.support}>
                             support@ely.by
                         </a>
                         <div className={styles.easterEgg}>
@@ -40,4 +70,5 @@ export default function BSoD({store}: {store: *}) {
                 </div>
             </IntlProvider>
         );
+    }
 }

src/services/logger/logger.js

@@ -66,6 +66,10 @@ class Logger {
     warn(message: string | Error, context: Object) {
         log('warning', message, context);
     }
+
+    getLastEventId(): string | void {
+        return Raven.lastEventId();
+    }
 }
 
 function log(