Google Smart Home

This sample is used to describe how to build your own backend service associated with Google Home Control.

Reference🔖

There are all smart home references including all data schema and REST API, RPC API, etc.

Google home official site

Actions on Google

This section will set up these setting for Google smart home request :

Your own private OAuth 2.0 client id and client secret which is identify current request is come from Google.
Your OAuth 2.0 authorization endpoint which is used to distribute a authorization code for exchanging access token and refresh token.
Your OAuth 2.0 token exchange endpoint which is used to exchange access token and refresh token via a authorization code which is come from authorization endpoint.

Google stores the access token and the refresh token for the user and records the expiration of the access token. When the access token expires, Google uses the refresh token to get a new access token from your token exchange endpoint.
Your smart home services fulfillment address, only support HTTPS protocol.

You can follow this manual to create a Google actions in the Actions console.

Deployment🚀

There are two kinds of deployment:

Deploy Smart Home services to firebase functions and firebase real-time database. You should download your firebase-admin-sdk.json to functions/src/firebase-admin-sdk.json before link to firebase real-time database.
- frontend is a dashboard for firebase real-time database.
- functions is firebase cloud functions directory.
```
$ firebase login
$ firebase deploy
# All functionalities has been deployed on the firebase platform right now.
```
Deploy Smart Home services to your own private server.
- You should compile all Typescript file to JavaScript file first.
```
$ yarn tsc
```
- Implement your own config/index.json file.
```
{
  "google_api_key": "access google homegraph"
}
```
  Google api key is used to access your own google homegraph service.
  
  NOTICE: DO NOT commit config/index.json with any secret key into your git.
- Run deployment command
```
# deploy services
# Services is running at http://127.0.0.1:7001 by default
$ yarn deploy
# stop services
# shut down master worker work with cluster module (multi-process model)
$ yarn stop
```

Notice⚠️

You should follow these step to build this sample if you want that firebase works with a network proxy (More details: firebase/issues/155).

mutate the source code of faya-websocket dependency (firebase-tools dependents on it).

var Client = function(_url, protocols, options) {
  options = options || {};
  // add this proxy setting
  options.proxy = {
      origin:  'http://localhost:' + LOCAL_NETWORK_PROXY_PORT,
  };
  …
}

Export two variables

# eg:
# > export http_proxy=http://127.0.0.1:8000
$ export http_proxy=<the http address of network proxy, including network port>
# Optional step
$ export NODE_TLS_REJECT_UNAUTHORIZED=0

firebase login without local server in your own shell
```
$ firebase login --no-localhost
```