fix(daemon): check if old daemon is running in case of relaunch

app/components/with-daemon-status-check.js

@@ -24,7 +24,7 @@ export const withDaemonStatusCheck = <PassedProps: {}>(
     state = {
       isRunning: false,
       progress: 0,
-      message: 'ZEC Wallet Starting',
+      message: 'Zepio Wallet Starting',
     };
 
     componentDidMount() {
@@ -64,7 +64,7 @@ export const withDaemonStatusCheck = <PassedProps: {}>(
           }
         })
         .catch((error) => {
-          const statusMessage = error.message === 'Something went wrong' ? 'ZEC Wallet Starting' : error.message;
+          const statusMessage = error.message === 'Something went wrong' ? 'Zepio Wallet Starting' : error.message;
 
           const isRpcOff = Math.trunc(error.statusCode / 100) === 5;
 

app/containers/settings.js

@@ -52,7 +52,9 @@ const mapDispatchToProps = (dispatch: Dispatch): MapDispatchToProps => ({
   updateZcashNetwork: (newNetwork) => {
     electronStore.set(ZCASH_NETWORK, newNetwork);
 
-    electron.remote.app.relaunch();
+    electron.remote.app.relaunch({
+      args: Array.from(new Set(electron.remote.process.argv.slice(1).concat(['--relaunch']))),
+    });
     electron.remote.app.quit();
   },
 });

config/daemon/wait-for-daemon-close.js

@@ -0,0 +1,15 @@
+// @flow
+import eres from 'eres';
+import processExists from 'process-exists';
+
+// eslint-disable-next-line
+export default (processName: string): Promise<void> => new Promise((resolve) => {
+  const interval = setInterval(async () => {
+    const [, isRunning] = await eres(processExists(processName));
+
+    if (!isRunning) {
+      clearInterval(interval);
+      resolve();
+    }
+  }, 500);
+});

config/daemon/zcashd-child-process.js

@@ -12,7 +12,7 @@ import uuid from 'uuid/v4';
 import findProcess from 'find-process';
 /* eslint-disable-next-line import/named */
 import { mainWindow } from '../electron';
-
+import waitForDaemonClose from './wait-for-daemon-close';
 import getBinariesPath from './get-binaries-path';
 import getOsFolder from './get-os-folder';
 import getDaemonName from './get-daemon-name';
@@ -71,10 +71,16 @@ const runDaemon: () => Promise<?ChildProcess> = () => new Promise(async (resolve
     return reject(new Error(err));
   }
 
-  if (!mainWindow.isDestroyed()) mainWindow.webContents.send('zcashd-params-download', 'ZEC Wallet Starting');
+  if (!mainWindow.isDestroyed()) mainWindow.webContents.send('zcashd-params-download', 'Zepio Wallet Starting');
   log('Fetch Params finished!');
   store.set('DAEMON_FETCHING_PARAMS', false);
 
+  // In case of --relaunch on argv, we need wait to close the old zcash daemon
+  // a workaround is use a interval to check if there is a old process running
+  if (process.argv.find(arg => arg === '--relaunch')) {
+    await waitForDaemonClose(ZCASHD_PROCESS_NAME);
+  }
+
   const [, isRunning] = await eres(processExists(ZCASHD_PROCESS_NAME));
 
   // This will parse and save rpcuser and rpcpassword in the store