pac.yml

name: Policy as Code

on:
  pull_request:
    paths:
      - repo-policy/**

env:
  TERRAFORM_DIR: "./repo-policy"

jobs:
  terraform:
    runs-on: ubuntu-latest
    permissions:
      id-token: write
      pull-requests: write

    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 1

      - uses: aws-actions/configure-aws-credentials@v1
        with:
          role-to-assume: arn:aws:iam::754489498669:role/gromit-ci
          role-session-name: gromitci
          aws-region: eu-central-1

      - uses: hashicorp/setup-terraform@v2
        with:
          terraform_version: 1.3.0
          cli_config_credentials_token: ${{ secrets.TF_API_TOKEN }}

      - name: Terraform Init
        working-directory: ${{ env.TERRAFORM_DIR }}
        id: init
        run: terraform init -input=false

      - name: Terraform Validate
        id: validate
        run: terraform validate -no-color

      - name: Terraform Plan
        working-directory: ${{ env.TERRAFORM_DIR }}
        id: plan
        run: |
          echo "::group::Terraform Plan"
          terraform plan -no-color -input=false
          echo "::endgroup::"
        continue-on-error: true
        env:
          GITHUB_TOKEN: ${{ secrets.ITS_GH_TOKEN }}

      - name: Update Pull Request
        uses: actions/github-script@v6
        if: github.event_name == 'pull_request'
        env:
          PLAN: "terraform\n${{ steps.plan.outputs.stdout }}"
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const output = `#### Terraform Format and Style 🖌\`${{ steps.fmt.outcome }}\`
            #### Terraform Initialization ⚙️\`${{ steps.init.outcome }}\`
            #### Terraform Plan 📖\`${{ steps.plan.outcome }}\`
            #### Terraform Validation 🤖\`${{ steps.validate.outcome }}\`

            <details><summary>Show Plan</summary>

            \`\`\`\n
            ${process.env.PLAN}
            \`\`\`

            </details>

            *Pushed by: @${{ github.actor }}, Action: \`${{ github.event_name }}\`*`;

            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: output
            })
            
      - name: Terraform Plan Status
        if: steps.plan.outcome == 'failure'
        run: exit 1