GitHub Action for Terraform Coding Style fixes automatization

terraform_coding-style.yml

name: Terraform Coding Style fixer
description: 'Terraform Coding Style fixer creates a Pull Request with the suggested Coding Style fixes'
on: push
jobs:
  terraform-fmt:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout source code
        uses: actions/checkout@v2
        with:
          ref: ${{ github.head_ref }}

      - name: Install Terraform CLI
        uses: hashicorp/setup-terraform@v1

      - name: Execute Terraform Coding Style fixer
        id: terraform-fmt-fix
        run: terraform fmt -recursive -write=true

      - name: Set fixes branch name
        if: steps.terraform-fmt-fix.outputs.stdout
        id: vars
        run: echo ::set-output name=branch-name::"terraform-fmt-action/$(echo ${GITHUB_REF#refs/heads/} | sed 's/\//_/g')"

      - name: Create Pull Request
        if: steps.terraform-fmt-fix.outputs.stdout
        run: |
          pr_title="Terrafom Coding Style fixes"
          pr_message="This is an auto-generated PR with coding style fixes by \`terraform fmt\`"
          git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git config --local user.name "github-actions[bot]"
          git checkout -B ${{ steps.vars.outputs.branch-name }}
          git commit --all \
            --message "${pr_title}" \
            --message "${pr_message}"
          hub pull-request \
            --push \
            --head ${{ steps.vars.outputs.branch-name }} \
            --base ${{ github.ref }} \
            --message "${pr_title}" \
            --message "${pr_message}" \
            --assign ${{ github.actor }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Fail if terraform-fmt made changes
        if: steps.terraform-fmt-fix.outputs.stdout
        run: exit steps.terraform-fmt-check.outputs.exitcode