generate-d2-images.yaml

#  vim:ts=2:sts=2:sw=2:et
#
#  Author: Hari Sekhon
#  Date: 2023-04-15 19:21:30 +0100 (Sat, 15 Apr 2023)
#
#  https://github.com/HariSekhon/Diagrams-as-Code
#
#  License: see accompanying Hari Sekhon LICENSE file
#
#  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
#
#  https://www.linkedin.com/in/HariSekhon
#

---
name: Generate D2 Images

on:
  push:
    branches:
      - master
      - main
    paths:
      - '*.d2'
      - .github/workflows/generate-d2-images.yaml  # this workflow

  workflow_dispatch:
    inputs:
      debug:
        type: boolean
        required: false
        default: false

  schedule:
    - cron: '0 0 * * 1'

# use minimal permissions at workflow / jobs level
permissions:
  contents: write

concurrency:
  group: ${{ github.ref }}-${{ github.workflow }}
  cancel-in-progress: true

defaults:
  run:
    shell: bash -euxo pipefail {0}

jobs:
  generate_images:
    name: Generate D2 Images
    runs-on: ubuntu-latest
    timeout-minutes: 30

    if: ( github.ref_name == 'master' || github.ref_name == 'main' ) && github.event.repository.fork == false

    steps:
      - name: Environment
        run: env | sort

      - uses: actions/checkout@v3
        with:
          submodules: 'true'

      - name: Bootstrap
        run: setup/ci_bootstrap.sh

      - name: Install D2 Dependencies
        run: make install-d2

      - name: Generate D2 Images
        run: make d2

      - name: Git Commit Images
        id: commit
        run: |
          git add images/
          if git diff-index --quiet HEAD --; then
            echo "No changes to commit"
            exit 0
          fi
          git config user.name "$(git log -n 1 --format='%an')"
          git config user.email "$(git log -n 1 --format='%ae')"
          git config pull.rebase false
          git commit --message "Committed Generated Images - GitHub Actions Workflow: $GITHUB_WORKFLOW" images/
          # deprecated
          #echo "::set-output name=new_commits::true"
          echo "new_commits=true" >> $GITHUB_OUTPUT

      - name: Git Push
        if: steps.commit.outputs.new_commits == 'true'
        run: |
          git pull --no-edit
          git push