In this tutorial I'll show you how to build your own awkward silence breaker, in the form of an SMS app that will reply to you with terrible festive jokes and one-liners that you can throw out to the table, quickly breaking the tension.
Getting large groups of family members together at any time of year can sometimes get a little awkward. Like when Uncle Bill has been mixing his drinks, and he ultimately says something about cousin Roberta that leaves everyone uncomfortably munching on parsnips.
Awkward. Fire up your code editor and let's get started.
Try Before You Build
My version of this app is live, so you can message it right now and see the results before we dig into the code.
Send an SMS containing the word 'awkward' to
+44 7520619627 if you're in the UK, or
+1 201 844 9627 if you're in the US and bust out laughing at the genius lines you'll be sent in return... maybe.
(The keen of eye will have already spotted that the last 4 digits of each of those numbers spell out X-M-A-S on a telephone keypad.)
One line didn't break the grim, grim silence? Okay, SMS the word 'more' in reply and get another line that might help.
Building The App
- The Nexmo Command Line Interface
- A fresh SMS capable number
- Node.js version 8 or above
- A selection of terrible jokes and one-liners
- An awkward situation
Vonage API Account
To complete this tutorial, you will need a Vonage API account. If you don’t have one already, you can sign up today and start building with free credit. Once you have an account, you can find your API Key and API Secret at the top of the Vonage API Dashboard.
This tutorial also uses a virtual phone number. To purchase one, go to Numbers > Buy Numbers and search for one that meets your needs.
Clone The Repository
In any directory clone a copy of the code from our nexmo-community repository on GitHub:
git clone firstname.lastname@example.org:nexmo-community/xmas-jokes-nodejs.git
Then change to the directory to access the code:
Open this festive package of wonder up in your editor, and we'll get on with the configuration.
Start It Up
To configure this app, it needs to be reachable from the outside world. Use Ngrok to expose port
3000 and note down the
https URL you are given:
ngrok http 3000
The first piece to configure is the
.env.sample file. Start by renaming it to
Add all the following pieces of information:
NEXMO_API_KEY="" # from your account dashboard NEXMO_API_SECRET="" # from your account dashboard
Next up is the application-specific detail. Set that up using the CLI:
nexmo application:create "Xmas Jokes" https://<your_ngrok_url>/inbound https://<your_ngrok_url>/status --keyfile private.key --type messages
This command will set up a new Messages & Dispatch application on your account. It outputs the
Application ID to the screen and will also write a file called
private.key into the directory you're currently in. Both are needed for the next step of the config:
NEXMO_APPLICATION_ID="" # The new App ID you just generated NEXMO_APPLICATION_PRIVATE_KEY="./private.key" # No need to change this unless you called your keyfile something different
Finally, add in your new SMS capable number:
NEXMO_FROM_NUMBER="" # If you have a Non-US number put it here, otherwise blank NEXMO_FROM_NUMBER_US="" # If you have a US number, put it here, otherwise blank
With all those fields filled out you can save your
.env and close it.
Linking Numbers & Setting Callbacks
The app you have cloned has two endpoints in it:
/inboundreceives new SMS messages
/statusis a required URL for any Messages & Dispatch application, it receives read receipts and other information about the messages you send
So that the app can receive SMS messages, your number needs to know about your app. You do this by providing it with a callback URL:
nexmo link:sms <your number> http://<your_ngrok_url>/inbound
Once that is set, connect your application to the number as well:
nexmo link:app <your number> <your application id>
That's it. Set up complete!
Fire Up The Festive Cheer
Nexmo now knows where everything is going and how to route new messages over to your application. There's only one thing left to do:
npm run dev
Once the server is running, ensure that your Ngrok connection is still up and running on the same URL you used in the callbacks and then SMS the word 'awkward' to your new number.
Your next steps are to deploy this app to a server. Heroku is an excellent choice for this and the app won't require any code changes to work there.
Remember, when you deploy the app elsewhere you will need to update the callbacks for the SMS number, and both the URLs for your Messages & Dispatch application.
The CLI commands you need to do this are:
nexmo link:sms <your number> http://<your_new_deployed_url>/inbound
nexmo app:update <your_application_id> "Xmas Jokes" https://<your_new_deployed_url>/inbound https://<your_new_deployed_url>/status
Then you're good to go.
Do You Want It To Be Even Easier?
If you're looking for an even quicker route to playing with the code for this application, you can remix it on Glitch by clicking the button below: