Add clear message example

app.js

@@ -266,6 +266,49 @@ app.post('/send-group-message', [
   });
 });
 
+// Clearing message on spesific chat
+app.post('/clear-message', [
+  body('number').notEmpty(),
+], async (req, res) => {
+  const errors = validationResult(req).formatWith(({
+    msg
+  }) => {
+    return msg;
+  });
+
+  if (!errors.isEmpty()) {
+    return res.status(422).json({
+      status: false,
+      message: errors.mapped()
+    });
+  }
+
+  const number = phoneNumberFormatter(req.body.number);
+
+  const isRegisteredNumber = await checkRegisteredNumber(number);
+
+  if (!isRegisteredNumber) {
+    return res.status(422).json({
+      status: false,
+      message: 'The number is not registered'
+    });
+  }
+
+  const chat = await client.getChatById(number);
+  
+  chat.clearMessages().then(status => {
+    res.status(200).json({
+      status: true,
+      response: status
+    });
+  }).catch(err => {
+    res.status(500).json({
+      status: false,
+      response: err
+    });
+  })
+});
+
 server.listen(port, function() {
   console.log('App running on *: ' + port);
 });