Accept user queries and echo them back.

src/index.js

@@ -68,7 +68,10 @@ app.post('/', async (req, res, next) => {
 
     // slash command
     if (req.body.command) {
-        const channel = req.body.channel_id;
+        const {
+            channel_id,
+            text 
+        } = req.body;
 
         res.sendStatus(200);
 
@@ -76,6 +79,15 @@ app.post('/', async (req, res, next) => {
 
         const endpoint = 'https://slack.com/api/chat.postMessage';
 
+        const punct = /[?.!]/g;
+        const elision = (text || ' ').split('').pop().match(punct)
+            ? ''
+            : '...';
+
+        const responseText = text === ''
+            ? theStrategy
+            : `_${text}_${elision} ${theStrategy}`;
+
         const payload = {
             method: 'POST',
             headers: {
@@ -83,8 +95,8 @@ app.post('/', async (req, res, next) => {
                 'Authorization': `Bearer ${process.env.BOTACCESSTOKEN}`,
             },
             body: JSON.stringify({
-                channel: channel,
+                channel: channel_id,
-                text: theStrategy,
+                text: responseText,
             }),
         };