First we create a storage bucket with terraform.
Steps :
1 - Connect to Google Console
2 - Create a project
3 - Go to IAM and add service account and give it Storage/AdminRole
4 - Generate Keys in keys tab of the service account and save them in json format on you local machine
5 - Install Terraform and Google-SDK on your local machine
6 - Create a project folder and add two file main.tf and variables.tf
7 - Copy and paste the script provided in this repo. Don't forger to change the names
8 - terraform apply and see the magic happen