name: 'Terraform GitHub Actions'
on:
  - pull_request
env:
  tf_version: 'latest'
  tf_working_dir: '.'
  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
jobs:
  terraform:
    environment: main
    name: 'Terraform'
    runs-on: ubuntu-latest
    # These permissions are needed to interact with GitHub's OIDC Token endpoint.
    permissions:
      id-token: write
      contents: write
      pull-requests: write
    steps:
      - name: Configure AWS Credentials
        uses: aws-actions/configure-aws-credentials@v1
        with:
          aws-region: ap-southeast-2
          role-to-assume: arn:aws:iam::143841941773:role/github
          role-session-name: Terraform
      - uses: hashicorp/setup-terraform@v1
        with:
         terraform_version: 1.1.5
      - name: 'Checkout'
        uses: actions/checkout@master
      - name: Terraform fmt
        id: fmt
        run: terraform fmt
        continue-on-error: true
      - uses: EndBug/add-and-commit@v7
        with:
          message: Terraform fmt [skip ci]
          committer_name: GitHub Actions
          committer_email: actions@github.com    
        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 -out prod.plan
        continue-on-error: true

      - 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 🖌

            <details><summary>Show Formatted Files</summary>

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

            </details>
            
            #### Terraform Initialization ⚙️\`${{ steps.init.outcome }}\`
            #### Terraform Validation 🤖 ${{ steps.validate.outputs.stdout }} 
            #### Terraform Plan 📖\`${{ 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 }}\`*`;
              
            github.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: output
            })