Some adjustments for status notification.

src/lib/ChargeStation/connection.ts

@@ -135,7 +135,7 @@ class Connection {
       const promise = new Promise<void>((resolve, reject) => {
         const timeoutId = setTimeout(() => {
           this.inflight = undefined;
-          reject(new Error(`Call with message id ${messageId} timed out after ${this.inflightTimeoutMs / 1000} seconds`))
+          reject(new Error(`Call with message id ${messageId} timed out after ${this.inflightTimeoutMs / 1000} seconds`));
         }, this.inflightTimeoutMs);
 
         this.inflight = {

src/lib/ChargeStation/eventHandlers/ocpp-16/send-status-notification-preparing.js

@@ -2,6 +2,10 @@ export default async function sendStatusNotificationPreparing({
   chargepoint,
   session,
 }) {
+  if (chargepoint.currentStatus[session.connectorId] === 'Preparing') {
+    return;
+  }
+
   await chargepoint.writeCall(
     'StatusNotification',
     {

src/lib/ChargeStation/index.ts

@@ -350,6 +350,10 @@ export default class ChargeStation {
       session,
     };
   }
+
+  sendStatusNotification(connectorId: number, status: string) {
+    this.writeCall('StatusNotification', { connectorId, status, errorCode: 'NoError', });
+  }
 }
 
 /*

src/screens/Dashboard/StatusNotificationModal.js

@@ -1,8 +1,6 @@
 import React from 'react';
-import { Modal, Button, Form, Header, Divider } from 'semantic';
+import { Modal, Button, Form, Divider } from 'semantic';
 import modal from 'helpers/modal';
-import { sessionSettingsList } from 'lib/settings';
-import { HelpTip } from 'components';
 
 function selectDefaultConnector(availableConnectors) {
   return ['1', '2'].filter((connectorId) => {

src/screens/Dashboard/index.js

@@ -243,14 +243,13 @@ export default class Home extends React.Component {
               currentStatus={chargeStation.currentStatus}
               session={session}
               onSave={async ({ connectorId, status }) => {
-                await chargeStation.sendStatusNotification(connectorId, status);
+                await chargeStation.sendStatusNotification(parseInt(connectorId), status);
                 this.nextTick();
               }}
               trigger={
                 <Button
                   inverted
                   primary={!!chargeStationIsCharging}
-                  disabled={!chargeStationIsCharging}
                   icon="signal"
                   content="Status"
                 />