1- Create a new project in Google Developper Console:

• Log in to your Google Account, go to the Google Developers Console, and create a new project.

• Fill in the project name field and click on the "Create" button.

2- Config OAuth Consent

• Go to the OAuth Consent Screen.
• Select the "External" option and click on "Create"

• Fill in all the OAuth consent screen information and click on the "Save and Continue" button.

• 2. Set any optional scope options if needed and click on the "Save & Continue" button.
• 3. You may also want to add test users; do so and then click on the "Save & Continue"
• 4. Review all project information, then click on the "Back to Dashboard" button.

• Click on the "Publish App" button.

3 - Create credentials account

• Click on the "Credentials" tab.
• Click on the "Create Credentials" button.
• Select "Service account" from the options.

• Fill in the service account name and description, then click on the "Create & Continue" button.

• Grant users access to this service account.
• If needed, grant this service account access to your project as an owner.

• Download the service account key in JSON and save it in a secure location (you cannot download it again later).

4 - Enable the application API in Google Developer Console

• Go to the menu: Settings > APIs & Services > Library.
• Search for the specific API you want to enable (e.g., Google Drive API).

• Click on the API, then click on the "Enable" button.

5 - Establish a connection to the Google application

• Go to the menu: Settings > Technical > Google API > Google Applications.
• Add a Google Applications configuration.

• Use the service account type to run API requests.
• For each application, you need to add the scope and the JSON file that contains the authentication key.
• Click on "Test Google API Auth" to check if the authentication is set up correctly.

NB:

This module can be improved to accommodate other authentication types