From 0f1d9e7f391e793d33270d36171a3483d6a32b2f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marko=20Markovi=C4=87?= <okram@civokram.com>
Date: Sun, 22 Apr 2018 20:57:24 +0200
Subject: [PATCH] Add simple intents

---
 bot/facebook/conversation.js | 53 ++++++++++++++++++++++++++++++++++++
 bot/facebook/index.js        | 15 +++++-----
 2 files changed, 61 insertions(+), 7 deletions(-)
 create mode 100644 bot/facebook/conversation.js

diff --git a/bot/facebook/conversation.js b/bot/facebook/conversation.js
new file mode 100644
index 0000000..1fede93
--- /dev/null
+++ b/bot/facebook/conversation.js
@@ -0,0 +1,53 @@
+const fbTemplate = require('claudia-bot-builder/lib/facebook/format-message')
+const fbReply = require('claudia-bot-builder/lib/facebook/reply')
+
+const normalize = str => str.toLowerCase()
+
+const send = (recipientId, message) =>
+  fbReply(recipientId, message, process.env.FB_ACCESS_TOKEN)
+
+const intents = {
+  default: {
+    keywords: [],
+    run(msg, recipient) {
+      const reply = new fbTemplate.Text(
+        `Sorry, ${
+          recipient.first_name
+        }. I am a young Bot and still learning. Type "Start" to show the start over.`
+      ).get()
+      send(recipient.id, reply)
+    },
+  },
+  start: {
+    keywords: ['start', 'menu', 'help'],
+    run(msg, recipient) {
+      const reply = new fbTemplate.Text(`
+      This is your menu. You can reach it by writing Menu, or Help, or Start
+      `).get()
+      send(recipient.id, reply)
+    },
+  },
+  drink: {
+    keywords: ['dring', 'water', 'gimmme'],
+    run(msg, recipient) {
+      const reply = new fbTemplate.Text(`
+    So, you'd like to drink?
+    `).get()
+      send(recipient.id, reply)
+    },
+  },
+}
+
+const getIntent = msg =>
+  Object.keys(intents).find(k => intents[k].keywords.indexOf(msg) !== -1)
+
+module.exports = async (message, recipient) => {
+  const intent = getIntent(normalize(message.text))
+
+  // Fallthrough
+  if (!intent) {
+    return intents.default.run(message, recipient)
+  }
+
+  intents[intent].run(message, recipient)
+}
diff --git a/bot/facebook/index.js b/bot/facebook/index.js
index 0a7c2c0..d4c48e4 100644
--- a/bot/facebook/index.js
+++ b/bot/facebook/index.js
@@ -5,9 +5,9 @@ const FB = require('fb')
 FB.setAccessToken(process.env.FB_ACCESS_TOKEN)
 
 const fbParser = require('claudia-bot-builder/lib/facebook/parse')
-const fbReply = require('claudia-bot-builder/lib/facebook/reply')
 const fbValidate = require('claudia-bot-builder/lib/facebook/validate-integrity')
-const fbTemplate = require('claudia-bot-builder/lib/facebook/format-message')
+
+const conversation = require('./conversation')
 
 /**
  * In-Memory cache for FB graph results
@@ -62,11 +62,12 @@ const respond = async (req, res) => {
     // Cache recipients
     recipients[message.sender] = recipient
 
-    const replyMessage = new fbTemplate.Text(
-      `${recipient.first_name} said: "${message.text}"`
-    ).get()
-
-    fbReply(recipient.id, replyMessage, process.env.FB_ACCESS_TOKEN)
+    try {
+      await conversation(message, recipient)
+    } catch (err) {
+      console.error(err)
+      res.end(err.message)
+    }
 
     res.end()
   } else {