plan.yml

name: 'Terraform Plan'

on:
  push:
    branches: [ 'main' ]
  pull_request:
  workflow_call:
    secrets:
      ROLE_TO_ASSUME:
        required: true

permissions:
  contents: read
  id-token: write

jobs:
  terraform:
    name: 'Terraform'
    runs-on: ubuntu-latest
    environment: production
    defaults:
      run:
        shell: bash
        working-directory: ./terraform

    steps:
    # Checkout the repository to the GitHub Actions runner
    - name: Configure AWS Credentials
      uses: aws-actions/configure-aws-credentials@v4
      with:
        role-to-assume: ${{ secrets.ROLE_TO_ASSUME }}
        aws-region: us-east-1
    
    - name: Checkout
      uses: actions/checkout@v4

    # Install the latest version of Terraform CLI and configure the Terraform CLI configuration file with a Terraform Cloud user API token
    - name: Setup Terraform
      uses: hashicorp/setup-terraform@v3

    # Initialize a new or existing Terraform working directory by creating initial files, loading any remote state, downloading modules, etc.
    - name: Terraform Init
      run: terraform init

    # Checks that all Terraform configuration files adhere to a canonical format
    - name: Terraform Format
      run: terraform fmt -check

    # Generates an execution plan for Terraform
    - name: Terraform Plan
      run: terraform plan -input=false

    - name: View Terraform Plan
      run: terraform plan -no-color -json