infra-plan.yml

name: Infrastructure Plan

on:
  pull_request:
    paths:
      #- '_infra/credentials/**/*.tf'
      #- '_infra/global/**/*.tf'
      #- 'apps/backend/_infra/prod/storage/**/*.tf'
      - 'apps/backend/_infra/prod/compute/**/*.tf'

env:
  TF_API_TOKEN: "${{ secrets.TERRAFORM_API_TOKEN }}"
  TF_CLOUD_ORGANIZATION: ${{ secrets.TERRAFORM_CLOUD_ORGANIZATION }}
  TF_VAR_organization: "${{ secrets.TERRAFORM_CLOUD_ORGANIZATION }}"
  TF_WORKSPACE: 'snipcode-backend-compute-prod'

jobs:
  terraform-plan:
    runs-on: ubuntu-latest

    strategy:
      matrix:
        directory:
         #- '_infra/credentials'
         #- '_infra/global'
         #- 'apps/backend/_infra/prod/storage'
         - 'apps/backend/_infra/prod/compute'

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Setup Terraform
        uses: hashicorp/setup-terraform@v3
        with:
          terraform_version: 1.3.0  # Specify your Terraform version

      - name: Upload Configuration
        uses: hashicorp/tfc-workflows-github/actions/upload-configuration@v1.0.0
        id: plan-upload
        with:
          workspace: ${{ env.TF_WORKSPACE }}
          directory: ${{ matrix.directory }}
          speculative: true

      - name: Create Plan Run
        uses: hashicorp/tfc-workflows-github/actions/create-run@v1.0.0
        id: plan-run
        env:
          TF_VAR_organization: "${{ secrets.TERRAFORM_CLOUD_ORGANIZATION }}"
        with:
          workspace: ${{ env.TF_WORKSPACE }}
          configuration_version: ${{ steps.plan-upload.outputs.configuration_version_id }}
          plan_only: true

      - name: Get Plan Output
        uses: hashicorp/tfc-workflows-github/actions/plan-output@v1.0.0
        id: plan-output
        with:
          plan: ${{ fromJSON(steps.plan-run.outputs.payload).data.relationships.plan.data.id }}

      - name: Update Pull Request
        uses: actions/github-script@v6
        id: plan-comment
        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('HCP Terraform Plan Output')
            });
            const output = `#### HCP Terraform Plan Output
                \`\`\`
                Plan: ${{ steps.plan-output.outputs.add }} to add, ${{ steps.plan-output.outputs.change }} to change, ${{ steps.plan-output.outputs.destroy }} to destroy.
                \`\`\`
                [HCP Terraform Plan](${{ steps.plan-run.outputs.run_link }})
                `;
            // 3. Delete previous comment so PR timeline makes sense
            if (botComment) {
              github.rest.issues.deleteComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: botComment.id,
              });
            }
            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: output
            });