preview.yml

name: preview

on:
  pull_request:
    branches:
      - main

jobs:
  preview:
    name: Changed Terramate stacks
    runs-on: ${{ matrix.os }}

    permissions:
      id-token: write
      contents: read
      pull-requests: write

    strategy:
        matrix:
          os: ["ubuntu-20.04"] # "macos-12", "macos-13"
          go: ["1.21", "1.22"]

    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.head_ref }}
          fetch-depth: 0
      - uses: actions/setup-go@v5
        with:
          go-version: ${{ matrix.go }}

      ### Create Pull Request comment

      - name: Prepare pull request preview comment
        if: github.event.pull_request
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          header: preview
          message: |
            ## Preview of Project changes in ${{ github.event.pull_request.head.sha }}

            :warning: preview is being created... please stand by!

      ### Check out the code

      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: ${{ github.head_ref }}
          fetch-depth: 0

      ### Install tooling

      - name: Install Terramate
        uses: terramate-io/terramate-action@v1

      # TODO(i4k): remove this once v0.5.0 is released
      - name: build Terramate
        run: make build

      ### Linting

      - name: Check Terramate formatting
        run: terramate fmt --check

      ### Check for changed stacks

      - name: List changed stacks
        id: list
        run: terramate list --changed

      ### Run the terramate preview script

      - name: check cloud info
        if: steps.list.outputs.stdout
        run: ./bin/terramate run --tags golang --no-recursive -- terramate cloud info || true
        env:
          TMC_API_HOST: api.stg.terramate.io

      - name: Golang test preview
        if: steps.list.outputs.stdout
        run: |
          echo >preview_url.txt "https://cloud.stg.terramate.io/o/test/review-requests"
          ./bin/terramate script run --parallel=10 --tags golang --changed -- test preview
        env:
          TMC_API_HOST: api.stg.terramate.io
          GITHUB_TOKEN: ${{ github.token }}

      ### Update Pull Request comment

      - name: Generate preview details
        if: steps.list.outputs.stdout
        id: comment
        run: |
          echo >>pr-comment.txt "## Preview of Terramate changes in ${{ github.event.pull_request.head.sha }}"
          echo >>pr-comment.txt
          echo >>pr-comment.txt "[:mag: View Details on Terramate Cloud]($(cat preview_url.txt))"
          echo >>pr-comment.txt
          echo >>pr-comment.txt "### Changed Stacks"
          echo >>pr-comment.txt
          echo >>pr-comment.txt '```bash'
          echo >>pr-comment.txt "${{ steps.list.outputs.stdout }}"
          echo >>pr-comment.txt '```'
          cat pr-comment.txt >>$GITHUB_STEP_SUMMARY

      - name: Generate preview when no stacks changed
        if: success() && !steps.list.outputs.stdout
        run: |
          echo >>pr-comment.txt "## Preview of Terramate changes in ${{ github.event.pull_request.head.sha }}"
          echo >>pr-comment.txt
          echo >>pr-comment.txt "### Changed Stacks"
          echo >>pr-comment.txt
          echo >>pr-comment.txt 'No changed stacks, no detailed preview will be generated.'
          cat pr-comment.txt >>$GITHUB_STEP_SUMMARY

      - name: Generate preview when things failed
        if: failure()
        run: |
          echo >>pr-comment.txt "## Preview of Terraform changes in ${{ github.event.pull_request.head.sha }}"
          echo >>pr-comment.txt
          echo >>pr-comment.txt "[:mag: View Details on Terramate Cloud]($(cat preview_url.txt))"
          echo >>pr-comment.txt
          echo >>pr-comment.txt "### Changed Stacks"
          echo >>pr-comment.txt
          echo >>pr-comment.txt '```bash'
          echo >>pr-comment.txt "${{ steps.list.outputs.stdout }}"
          echo >>pr-comment.txt '```'
          echo >>pr-comment.txt ':boom: Generating preview failed. Please see details in Actions output.'
          cat pr-comment.txt >>$GITHUB_STEP_SUMMARY

      - name: Publish generated preview as GitHub commnent
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          header: preview
          path: pr-comment.txt

  release_dry_run:
    name: Release Dry Run
        
    runs-on: ubuntu-20.04
        
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{github.event.pull_request.head.ref}}
          repository: ${{github.event.pull_request.head.repo.full_name}}
          fetch-depth: 0

      - uses: actions/setup-go@v5
        with:
          go-version: '1.21'
        
      - name: release dry run
        run: make release/dry-run
        
  required_checks:
    needs:
      - preview
    runs-on: ubuntu-20.04
    steps:
      - uses: Kesin11/actions-timeline@v1