terraform.yml

name: "Terraform"

on:
  pull_request:

env:
  TF_IN_AUTOMATION: true
  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
  TF_VAR_gh_token: ${{ secrets.GITHUB_TOKEN }}
  TF_VAR_billing_email: ${{ secrets.TF_VAR_billing_email }}

jobs:
  terraform:
    name: Run Terraform and Comment
    runs-on: ubuntu-latest
    # defaults:
    #   run:
    #     working-directory: ${{ env.tf_actions_working_dir }}
    permissions:
      pull-requests: write
    steps:
      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
      - uses: hashicorp/setup-terraform@a1502cd9e758c50496cc9ac5308c4843bcd56d36 # v3

      - name: Terraform fmt
        id: fmt
        run: terraform fmt -check
        continue-on-error: true

      - name: Terraform Init
        id: init
        run: terraform init

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

      - name: Terraform Plan
        id: plan
        run: terraform plan -no-color
        continue-on-error: true

      - uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7
        if: github.event_name == 'pull_request'
        env:
          PLAN: "terraform\n${{ steps.plan.outputs.stdout }}"
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            // 1. Retrieve existing bot comments for the PR
            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
            })
            const botComment = comments.find(comment => {
              return comment.user.type === 'Bot' && comment.body.includes('Terraform Format and Style')
            })

            // 2. Prepare format of the comment
            const output = `#### Terraform Format and Style 🖌\`${{ steps.fmt.outcome }}\`
            #### Terraform Initialization ⚙️\`${{ steps.init.outcome }}\`
            #### Terraform Validation 🤖\`${{ steps.validate.outcome }}\`
            <details><summary>Validation Output</summary>

            \`\`\`\n
            ${{ steps.validate.outputs.stdout }}
            \`\`\`

            </details>

            #### Terraform Plan 📖\`${{ steps.plan.outcome }}\`

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

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

            </details>

            *Pusher: @${{ github.actor }}, Action: \`${{ github.event_name }}\`, Working Directory: \`${{ env.tf_actions_working_dir }}\`, Workflow: \`${{ github.workflow }}\`*`;

            // 3. If we have a comment, update it, otherwise create a new one
            if (botComment) {
              github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: botComment.id,
                body: output
              })
            } else {
              github.rest.issues.createComment({
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: output
              })
            }