Domoticz-Google-Assistant

Standalone implementation. It means that you can put this server wherever you want, even on another machine. You need to setup a project in Actions on Google Console. You find instructions below.

Based on Pawcio's script at domoticz forum and the home assistant implementation

Required:

• Public IP
• python >= 3.5
• reverse proxy for establishing secure connection (Domoticz-Google-Assistant itself provides currently only unsecure one - http only)

Domoticz-Google-Assistant delivers:

• the oauth authorization and smarthome endpoint for the google assistant
• Two-factor authentication pin for domoticz protected devices (works best with english language)
• Acknowledgement with Yes or No. (works best with english language)
• Arm Disarm Securitypanel (works best with english language)
• OnOff, Brightness, Thermostat, ColorSetting, speaker volume, LockUnlock, Scene and OpenClose traits, rest to be done...

Please feel free to modify it, extend and improve

Installation with git

NOTE: "${USER}" will automatically take your username. No need to change that. Just copy and paste.

cd /home/${USER}/
git clone https://github.com/DewGew/Domoticz-Google-Assistant

Rename default_config.py to config.py:

cd /home/${USER}/Domoticz-Google-Assistant
mv default_config.py config.py

Before first launch, Actions on Google and config.py must be modified properly.

PORT_NUMBER = 3030 -> port number for the Domoticz-Google-Assistant server

SMARTHOMEPROVIDERGOOGLECLIENTID = 'AxqqWpwYj4'                      # Client ID
SMARTHOMEPROVIDEGOOGLECLIENTSECRET = '0KUYN5ExD62QOsWCO8zoFSS_'     # Client secret
SMARTHOMEPROVIDERAPIKEY = 'zOzaSyBu5Y8W7EiHvO1eyPmOAtZRxM9GaLP_uLA' # Request Sync API

#Oauth credentials -> required for app linking
U_NAME = 'oauth_username'
U_PASSWD = 'oauth_password'

DOMOTICZ_URL='http://[DOMOTICZ_IP]:[PORT]'
U_NAME_DOMOTICZ = 'domoticz_username'
U_PASSWD_DOMOTICZ = 'domoticz_password'
#Idx of Room plan. 0 is all devices.
DOMOTICZ_ROOMPLAN = '0'
# Set to 'DOMOTICZ_SWITCH_PROTECTION_PASSWD = False' if ask for pin function is not needed
DOMOTICZ_SWITCH_PROTECTION_PASSWD = '1234' # Only works with numbers as protection password in domoticz

Setup Actions on Google Console Instructions

• Use the Actions on Google Console to add a new project with a name of your choosing and click - Create Project.

  • Click Home Control, then click Smart Home.
  • On the left navigation menu under SETUP, click on Invocation.
  • Add your App's name. Click Save.
  • Click 'Save'.

• Add Credentials

  • Navigate to the Google Cloud Console API Manager for your project id.
  • Click 'Create credentials'
  • Click 'OAuth client ID'
  • Choose 'other'
  • Add name e.g. 'SMARTHOMEPROVIDERGOOGLECLIENTID'
  • Copy the client ID shown and insert it in SMARTHOMEPROVIDERGOOGLECLIENTID in config.py
  • Copy the client secret shown and insert it in SMARTHOMEPROVIDEGOOGLECLIENTSECRETin config.py

• Add Request Sync

  The Request Sync feature allows a cloud integration to send a request to the Home Graph to send a new SYNC request.

  • Navigate to the Google Cloud Console API Manager for your project id.
  • Enable the HomeGraph API. This will be used to request a new sync and to report the state back to the HomeGraph.
  • Click Credentials
  • Click 'Create credentials'
  • Click 'API key'
  • Copy the API key shown and insert it in SMARTHOMEPROVIDERAPIKEY in config.py.

• Navigate back to the Actions on Google Console.

  • On the left navigation menu under BUILD, click on Actions. Click on Add Your First Action and choose your app's language(s). Enter the URL for fulfillment, e.g. https://[YOUR REVERSE PROXY URL]/smarthome, click Done.
  • On the left navigation menu under ADVANCED OPTIONS, click on Account Linking.
  • Select No, I only want to allow account creation on my website. Click Next.
  • For Linking Type, select OAuth.
  • For Grant Type, select 'Authorization Code' for Grant Type.
  • Under Client Information, enter the client ID and secret from earlier.
  • Change Authorization URL to https://[YOUR REVERSE PROXY URL]/oauth (replace with your actual URL).
  • Change Token URL to https://[YOUR REVERSE PROXY URL]/token (replace with your actual URL).
  • Do NOT check 'Google to transmit clientID and secret via HTTP basic auth header'.
  • Click 'Save' at the top right corner, then click 'Test' to generate a new draft version of the Test App.

Starting Domoticz-Google-Assistant server:

cd /home/${USER}/
python3 Domoticz-Google-Assistant

Connect smart home devices to your Google Home device

• On your mobile device, open the Google Home app.
• On the Home tab, tap the “Add” quick action .
• Tap Set up a device
• Tap Have something already set up?
• Select your device app e.g: "[test]Your Appname"
• Login with Oauth credentials from config.py

Share devices

If you want to allow other household users to control the devices:

• Go to the settings for the project you created in the Actions on Google Console.
• Click Test -> Simulator, then click Share icon in the right top corner. Follow the on-screen instruction:
  • Add team members: Got to Settings -> Permission, click Add, type the new user’s e-mail address and choose Project -> Viewer role.
  • Copy and share the link with the new user.
  • When the new user opens the link with their own Google account, it will enable your draft test app under their account.
• Have the new user go to their Google Home app to add "[test]Your Appname" to their account. Login with Oauth credentials from config.py

Useful commands

With 'ack' : True:

User: Turn on the dining room light.
Google Assistant: Turning on the dining room light. Are you sure?
User: Yes.
Google Assistant: Turning on the dining room light.

Security device:

User: Set the security system to armed away.
Google Assistant: Can I have your security code?
User: 1234
Google Assistant: Ok, arming the security system to armed away.

User: Is my security system armed?
Google Assistant: The security system is armed to armed away.

Speaker volume:

User: Set volume on living room speaker to 50%
Google Assistant: Sure

User: Turn up the volume on living room speaker?
Google Assistant: Alright (Volume increases with 1%)

When a device has low battery:

User: Lock front door.
Google Assistant: The front door lock has low battery. Locking the front door.

Force devices sync

https://[YOUR REVERSE PROXY URL]/sync

Run as service for autorun at startup

Open terminal or putty.

cd /etc/systemd/system/
sudo nano dzga.service

Add this in nano:

[Unit]
Description=Domoticz-Google-Assistant Service
After=multi-user.target
[email protected]

[Service]
Type=simple
ExecStart=/usr/bin/python3 /home/${USER}/Domoticz-Google-Assistant/
StandardInput=tty-force

[Install]
WantedBy=multi-user.target

Then ctrl-x save and close. Enable service:

 sudo systemctl enable dzga.service
 sudo systemctl start dzga.service

Update

cd /home/${USER}/Domoticz-Google-Assistant/
git pull

If needed, restart service:

sudo systemctl restart dzga.service

Config.py will not be updated but if there is any changes on the config file compare your file with default_config.py