check_terraform.yml

# For docs on this see:
# * https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions
# * https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#pull_request
# * https://docs.github.com/en/webhooks/webhook-events-and-payloads?actionType=synchronize#pull_request
on:
  pull_request:
    types:
      - opened
      - synchronize # when commits are pushed to the PR
      - reopened
      - edited # title or body of a pull request was edited, or the base branch of a pull request was changed

jobs:
  terraform:
    strategy:
      matrix:
        environment: ["dev"]

    runs-on: ubuntu-latest
    if: ${{ !startsWith(github.event.head_commit.message, 'skip-terraform:') }}
    defaults:
      run:
        working-directory: tf/environments/${{ matrix.environment }}
    permissions:
      contents: write
      pull-requests: write

    steps:
      - uses: actions/checkout@v4

      - name: Configure AWS credentials
        run: |
          mkdir ~/.aws/
          cat <<EOF > ~/.aws/credentials
          [default]
          aws_access_key_id = ${{ secrets.OONIDEVOPS_AWS_ACCESS_KEY_ID }}
          aws_secret_access_key = ${{ secrets.OONIDEVOPS_AWS_SECRET_ACCESS_KEY }}

          [oonidevops_user]
          aws_access_key_id = ${{ secrets.OONIDEVOPS_AWS_ACCESS_KEY_ID }}
          aws_secret_access_key = ${{ secrets.OONIDEVOPS_AWS_SECRET_ACCESS_KEY }}
          EOF
          chmod 700 ~/.aws/
          chmod 600 ~/.aws/credentials

      - name: Install Terraform
        run: |
          wget -O- https://apt.releases.hashicorp.com/gpg | sudo gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg
          echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main" \
              | sudo tee /etc/apt/sources.list.d/hashicorp.list
          sudo apt update && sudo apt install terraform

      - 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: |
          echo "terraform_validate<<EOF" >> "$GITHUB_OUTPUT"
          echo "\$ terraform validate" >> "$GITHUB_OUTPUT"
          terraform validate -no-color | tee -a "$GITHUB_OUTPUT"
          echo "EOF" >> "$GITHUB_OUTPUT"

      - name: Terraform Plan
        id: plan
        run: |
          echo "terraform_plan<<EOF" >> "$GITHUB_OUTPUT"
          echo "\$ terraform plan" >> "$GITHUB_OUTPUT"
          terraform plan -no-color | tee -a "$GITHUB_OUTPUT"
          echo "EOF" >> "$GITHUB_OUTPUT"
        continue-on-error: true

      # Temporarily disabled, probably should be moved to a deploy action with stricter checks
      #- name: Terraform Apply
      #  id: apply
      #  run: |
      #    echo "terraform_apply<<EOF" >> "$GITHUB_OUTPUT"
      #    echo "\$ terraform apply -auto-approve" >> "$GITHUB_OUTPUT"
      #    terraform apply -auto-approve -no-color | tee -a "$GITHUB_OUTPUT"
      #    echo "EOF" >> "$GITHUB_OUTPUT"
      #  continue-on-error: true

      - uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const terraformPlanOutput = `${{ steps.plan.outputs.terraform_plan }}`;
            const terraformApplyOutput = `${{ steps.apply.outputs.terraform_apply }}`;

            const terraformPlanPlanLine = terraformPlanOutput.split('\n').find(line => line.startsWith('Plan:'));
            const terraformApplyPlanLine = terraformApplyOutput.split('\n').find(line => line.startsWith('Plan:'));
            const terraformApplyApplyLine = terraformApplyOutput.split('\n').find(line => line.startsWith('Apply complete!'));

            const commentTitle = "Terraform Run Output";
            const commentBody = `
            #### Format and Style 🖌\`${{ steps.fmt.outcome }}\`
            #### Initialization ⚙️\`${{ steps.init.outcome }}\`
            #### Validation 🤖\`${{ steps.validate.outcome }}\`
            <details><summary>Validation Output</summary>

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

            </details>

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

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

            \`\`\`\n
            ${terraformPlanOutput}
            \`\`\`

            </details>

            |                   |                                    |
            |-------------------|------------------------------------|
            | Pusher            | @${{ github.actor }}               |
            | Action            |  ${{ github.event_name }}          |
            | Environment       |  ${{ matrix.environment }}         |
            | Workflow          |  ${{ github.workflow }}            |
            | Last updated      |  ${ (new Date()).toUTCString() }   |
            `;

            // Call the script to write the comment
            const script = require('./scripts/ghactions/comment-on-pr.js');
            await script({github, context, core, commentTitle, commentBody});