Dexcom Test Application

This is a basic application aimed at the newly released (as of Sept 19, 2017) Dexcom API.

Application Set Up

Execute npm install to download and install dependencies. See package.json for further information.
You will need to create a .env file with the following entries:

CLIENT_ID: Your Dexcom client ID.

CLIENT_SECRET: Your Dexcom client secret.

DEXCOM_API_HOST: Which Dexcom environment you want to use. This can be either sandbox-api.dexcom or api.dexcom.com.

PORT: The port on which you want to run locally.
Run the application by executing npm start.

There are currently four routes implemented:

/ a basic index page that lets you know the app is running in the browser.
/auth this does the work of redirecting you to Dexcom's site where you can log in with a sandbox user or a prod user. Once authenticated, the app will take you to the /token route.
/token does the work of obtaining a bearer token once the user has authenticated to Dexcom. Upon successful authentication by the user, you will receive a JSON payload with the bearer token as defined in Dexcom's documentation.
/token/:refreshToken takes a refresh token as a path parameter and allows you to easily refresh your bearer token.

The app wraps all five of the Dexcom endpoints using their URI pattern. I simply pass on the query parameters back to Dexcom's API.

The redirect URL's passed to the Dexcom authentication endpoints assume redirection back to http://localhost:8080.
Once you land on http://localhost:8080/token?code=YOUR_AUTH_CODE&state=auth (after hitting the /token path) you can simply refresh this page to get a new access token.

Right now I'm passing the bearer token as a query parameter to our wrapper API. I'm using Postman to test the application locally, where I set the bearer token as a query parameter.

On the next revision, I'll transfer the token to an actual header where it's supposed to live.

For example, when I POST to the statistics endpoint, I use the code query parameter (it should actually be named bearerToken):

Name		Name	Last commit message	Last commit date
Latest commit History 3 Commits
api		api
images		images
README.md		README.md
app.js		app.js
package.json		package.json
routes.js		routes.js
tokenUtil.js		tokenUtil.js