terraform-plan.yml

name: terraform-plan

on:
  pull_request:
    paths:
      - '.github/workflows/terraform-plan.yml'
      - 'infrastructure/**'

env:
  tf_actions_working_dir: infrastructure/gcp
  terraform_version: 0.13.5

jobs:
  plan:
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: ${{ env.tf_actions_working_dir }}
    steps:
    - name: checkout
      id: checkout_code
      uses: actions/checkout@v4

    - uses: GoogleCloudPlatform/github-actions/setup-gcloud@master
      with:
        version: '290.0.1'
        project_id: ${{ secrets.GCP_PROJECT_ID }}
        service_account_key: ${{ secrets.GCP_SA_KEY }}
        export_default_credentials: true

    - uses: hashicorp/setup-terraform@v1
      with:
        terraform_version: ${{ env.terraform_version }}

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

    - name: Terraform Lint
      uses: reviewdog/action-tflint@master
      with:
        github_token: ${{ secrets.github_token }}
        reporter: github-pr-review
        fail_on_error: 'true'
        filter_mode: 'nofilter'

    - name: Terraform Init
      id: init
      run: terraform init
      continue-on-error: false

    - name: Terraform Validate
      id: validate
      run: terraform validate -no-color
      continue-on-error: false

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

    - uses: actions/github-script@0.9.0
      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 ⚙️\`${{ steps.init.outcome }}\`
          #### Terraform Validation 🤖${{ steps.validate.outputs.stdout }}
          #### Terraform Plan 📖\`${{ steps.plan.outcome }}\`

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

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

          </details>

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

          github.issues.createComment({
            issue_number: context.issue.number,
            owner: context.repo.owner,
            repo: context.repo.repo,
            body: output
          })