terraform_format_check.yml

name: Terraform Format Check

on:
    pull_request:
      types:
        - opened
        - reopened
        - synchronize
        - ready_for_review
    workflow_dispatch:

jobs:
    terraform-fmt:
      name: Validate Format of Terraform Files
      runs-on: ubuntu-latest
      steps:
        - name: Checkout code
          uses: actions/checkout@v4
        
        - name: Setup Terraform
          uses: hashicorp/setup-terraform@v3
          with:
            terraform_wrapper: false
        
        - name: Get changed directories
          id: changed-files
          uses: tj-actions/changed-files@v45
          with:
              dir_names: 'true'
        
        - name: Validate Terraform format
          if: steps.changed-files.outputs.any_changed == 'true'
          env:
            ALL_CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
          shell: bash
          run: |
              EXIT_CODE=0
              for file in ${ALL_CHANGED_FILES}; do
                echo "Checking format of $file with terraform fmt"
                terraform fmt -check -recursive "$file" || EXIT_CODE=$?
                echo "Result is $EXIT_CODE"
              done
              exit $EXIT_CODE