terraform-dev.yml

name: Terraform Dev

on:
  workflow_run:
    workflows: ["Docker Image"]
    types:
      - completed

jobs:
  terraform_dev:
    name: Checks & Plan
    runs-on: ubuntu-latest
    if: ${{ github.event.workflow_run.conclusion == 'success' }}
    permissions:
      contents: read
      issues: write
      pull-requests: write
    defaults:
      run:
        working-directory: ./infra
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Setup Terraform
        uses: hashicorp/setup-terraform@v1
        with:
          terraform_version: 1.4.6

      # Initialize a new or existing Terraform working directory by creating initial files, loading any remote state, downloading modules, etc.
      - name: Terraform Init
        id: init
        run: terraform init -backend-config backend-config-dev.tfvars
        env:
          GOOGLE_CREDENTIALS: ${{ secrets.GCP_CREDENTIALS_DEV }}

      # Checks that all Terraform configuration files adhere to a canonical format
      - name: Terraform Format
        id: fmt
        run: terraform fmt -check -diff -recursive
        env:
          GOOGLE_CREDENTIALS: ${{ secrets.GCP_CREDENTIALS_DEV }}

      # Validates the TF configuration files, referring only to the configuration and not accessing any remote services such as remote state.
      # Runs checks that verify whether a configuration is syntactically valid and internally consistent, regardless of any provided variables or existing state.
      - name: Terraform Validate
        id: validate
        run: terraform validate -no-color

      # Select the relevant Terraform workspace.
      - name: Terraform Select Workspace
        id: select
        run: terraform workspace select dev
        env:
          GOOGLE_CREDENTIALS: ${{ secrets.GCP_CREDENTIALS_DEV }}

      # Generates an execution plan for Terraform
      - name: Terraform Plan
        id: plan
        run: |
          terraform plan -input=false -no-color -lock-timeout=1h -var-file terraform-dev.tfvars \
            -var "credentials=$GOOGLE_CREDENTIALS" \
            -var docker_image=us-east1-docker.pkg.dev/pagoda-discovery-platform-dev/mpc-recovery/mpc-recovery-dev:${{ github.sha }}
        env:
          GOOGLE_CREDENTIALS: ${{ secrets.GCP_CREDENTIALS_DEV }}

      - uses: actions/github-script@v6
        if: github.event_name == 'pull_request'
        env:
          PLAN: "${{ 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 Dev Environment
            #### Terraform Format and Style 🖌\`${{ steps.fmt.outcome }}\`
            <details><summary>Format Check Output</summary>

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

            </details>

            #### 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
              })
            }

        # On push to "develop", build or change infrastructure according to Terraform configuration files
      - name: Terraform Apply
        if: github.ref == 'refs/heads/develop' && github.event_name == 'push'
        run: |
          terraform apply -auto-approve -input=false -lock-timeout=1h -var-file terraform-dev.tfvars \
            -var "credentials=$GOOGLE_CREDENTIALS" \
            -var docker_image=us-east1-docker.pkg.dev/pagoda-discovery-platform-dev/mpc-recovery/mpc-recovery-dev:${{ github.sha }}
        env:
          GOOGLE_CREDENTIALS: ${{ secrets.GCP_CREDENTIALS_DEV }}