on-pull-request.yml

on:
  pull_request:
    types: [opened, synchronize, reopened]

name: On Pull Request

jobs:
  terraform:
    name: 'Terraform'
    runs-on: ubuntu-latest
    env:
      ARM_CLIENT_ID: ${{ secrets.ARM_CLIENT_ID }}
      ARM_CLIENT_SECRET: ${{ secrets.ARM_CLIENT_SECRET }}
      ARM_SUBSCRIPTION_ID: ${{ secrets.ARM_SUBSCRIPTION_ID }}
      ARM_TENANT_ID: ${{ secrets.ARM_TENANT_ID }}
      TF_VERSION: 1.3.6

    defaults:
      run:
        shell: bash
        working-directory: ./terraform

    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Setup Terraform
        uses: hashicorp/setup-terraform@v2
        with:
          terraform_version: ${{ env.TF_VERSION }}

      - name: Terraform fmt
        id: fmt
        run: terraform fmt -check

      - name: Terraform init
        id: init
        run: |
          set -a 
          source ../.env.backend
          terraform init \
            -backend-config="resource_group_name=$TF_VAR_state_resource_group_name" \
            -backend-config="storage_account_name=$TF_VAR_state_storage_account_name"
      - name: Terraform validate
        id: validate
        run: terraform validate -no-color

      - name: Terraform plan
        id: plan
        run: terraform plan -no-color

      - uses: actions/github-script@v6
        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
              })
            }