From 5c0d0697feea60601c9b8c4e624c526a451f872f Mon Sep 17 00:00:00 2001
From: Joe Carstairs <65492573+Sycamost@users.noreply.github.com>
Date: Thu, 7 Mar 2024 21:44:48 +0000
Subject: More stuff

---
 src/app.js             | 30 +++++++++++++++++++++++++++++-
 src/db.js              |  9 ++++++++-
 src/sendTextMessage.js | 12 ++++++++++++
 3 files changed, 49 insertions(+), 2 deletions(-)
 create mode 100644 src/sendTextMessage.js

(limited to 'src')

diff --git a/src/app.js b/src/app.js
index 9067aa6..7c7ac83 100644
--- a/src/app.js
+++ b/src/app.js
@@ -1,5 +1,7 @@
 const bodyParser = require('body-parser');
 const express = require('express');
+const { isSubscribed, getSubscriptions, getSubscriptionFromNumber } = require('./db');
+const { sendTextMessage } = require('./sendTextMessage');
 const { MessagingResponse } = require('twilio').twiml;
 
 const app = express();
@@ -8,7 +10,33 @@ app.use(bodyParser.urlencoded({ extended: false }));
 
 app.post('/sms', (req, res) => {
   /** @type {string} */
-  const body = req.body;
+  const body = req.body.Body.trim();
+  /** @type {string} */
+  const senderPhoneNumber = req.body.From;
+  /** @type {string} */
+  const senderCountry = req.body.FromCountry;
+
+  console.debug(`
+    Received a text from ${senderCountry} on number ${senderPhoneNumber}.
+    Message content: ${body}. End of message
+  `);
+
+  if (isSubscribed(senderPhoneNumber)) {
+    const senderSubscription = getSubscriptionFromNumber(senderPhoneNumber);
+    // TODO: enable filter. Just disabling so I can get the forwarded text to my own phone to check it works.
+    const otherSubscriptions = getSubscriptions()/* .filter(sub => sub.number != senderPhoneNumber) */;
+
+    const forwardedMessage = `${senderSubscription.name} said: ${body}`;
+    sendTextMessage(otherSubscriptions, forwardedMessage);
+
+    const abbreviatedBody = body.length() > 10 ? `${body.slice(0, 8)}...` : body;
+    const confirmationMessage = `
+      Your message was forwarded to ${otherSubscriptions.length()}
+      recipients: "${abbreviatedBody}". Only you can see this message.
+    `;
+    sendTextMessage([senderSubscription], confirmationMessage);
+  }
+
   const twiml = new MessagingResponse();
   twiml.message(JSON.stringify(body));
   res.type('text/xml').send(twiml.toString());
diff --git a/src/db.js b/src/db.js
index 145b144..95a9917 100644
--- a/src/db.js
+++ b/src/db.js
@@ -16,7 +16,7 @@ export function subscribe(number, name) {
  * @param {string} number
  */
 export function isSubscribed(number) {
-  return subscriptions.some(s => s.number == number);
+  return subscriptions.some(s => s.number === number);
 }
 
 export function getSubscriptions() {
@@ -26,4 +26,11 @@ export function getSubscriptions() {
     clone.push({ ...subscription });
   }
   return clone;
+}
+
+/**
+ * @param {string} number
+ */
+export function getSubscriptionFromNumber(number) {
+  return subscriptions.find(sub => sub.number === number);
 }
\ No newline at end of file
diff --git a/src/sendTextMessage.js b/src/sendTextMessage.js
new file mode 100644
index 0000000..b53a8a3
--- /dev/null
+++ b/src/sendTextMessage.js
@@ -0,0 +1,12 @@
+/**
+ * @param {Array<{name: string, number: string}>} subscriptions
+ * @param {string} message
+ */
+export function sendTextMessage(subscriptions, message) {
+  for (const subscription of subscriptions) {
+    const recipientNumber = subscription.number;
+    console.warn(`
+      TODO: send text message to ${recipientNumber}. Body: ${message}. End of message
+    `);
+  }
+}
\ No newline at end of file
-- 
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