update-about.yml

name: Update About

on:
  push:
    branches: ["main"]
  pull_request:
    branches: ["main"]
  schedule:
    - cron: "0 0 1 * *"

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
    - name: Git config
      run: |
        git config --global user.name "github-actions[bot]"
        git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
    - if: ${{ github.event_name == 'pull_request' }}
      name: Setup for PR
      run: |
        git fetch origin ${{ github.event.pull_request.head.ref }}
        git reset --hard origin/${{ github.event.pull_request.head.ref }}
    - name: Update about and about_template
      run: |
        # replace date, time, and time offset in template
        sed -ri "s/[12][0-9]{3}-[01][0-9]-[0-3][0-9]/$(date '+%Y-%m-%d')/g" _pages/about_template.md
        sed -ri "s/[01][0-9]:[0-5][0-9]:[0-5][0-9]/$(date '+%T')/g" _pages/about_template.md
        sed -ri "s/\+[0-9]{4}/$(date '+%z')/g" _pages/about_template.md
        # clone cschindlbeck, get about and concatenate it to template
        git clone https://github.com/cschindlbeck/cschindlbeck.git
        cat _pages/about_template.md cschindlbeck/README.md > _pages/about.md
    - name: Add and commit the changed files
      run: |
        git add _pages/about.md
        git add _pages/about_template.md
        # Prevent empty add to result in error
        git diff-index --quiet HEAD || git commit -m "Updated about"
    - if: ${{ github.event_name == 'pull_request' }}
      name: Push HEAD to PR branch
      run: |
        git push origin HEAD:${{ github.event.pull_request.head.ref }}
    - if: ${{ github.event_name == 'push' || github.event_name == 'schedule' }}
      name: Push on push or schedule
      run: |
        git push