Chatbot-DialogFlowV2-Messenger-NodeJS
This is a dialogflow chatbot for facebook messenger using NodeJS
- Download the repo. Run terminal on the project directory.
- Use command 'npm init'. Follow on-screen instrcutions.
- Next run commande 'npm install' to install package-lock.json file
- To install all project dependencies. Run command 'npm install body-parser dialogflow express pg request uuid --save'
- Upload files to a server like heroku or use ngrok.
- I assume you already have a facebook page. Visit developers.facebook.com, create an app. From the product section, add Messenger.
- Inside messenger settings, you need to connect your facebook page to your facebook developers app.
- On access token, link your facebook page and generate an access token, copy it and paste it in your config.js file.
- Scroll down to webhook. To configure the webhook, get the url of your file uploaded on a server. Copy/paste url in callback url section and give any string as a Verify token. Use the same verify token string in your config.js file.
- Inside webhook section, click Edit subscriptions and tick messages, messaging_postbacks.
- Get the facebook app secret from Settings->Basic. Copy/Paste it into your config.js file.
- I will assume you already created a dialogflow agent. Go to agent settings, copy the ProjectID and paste it into GOOGLE_PROJECT_ID of your config.js file.
- To get GOOGLE_CLIENT_EMAIL & GOOGLE_PRIVATE_KEY, click on service account link(under project id). It will redirect you to Google Cloud Platform. Find your service account for your dialogflow agent, Create a key and download the file. Copy the email and private from that file to your config.js file.
If you have done everything correctly, your messenger is now hooked to a dialogflow agent.