update_github_meta.yaml

on:
  push:
    branches:
      - gh-pages
  schedule:
    - cron: '15 14 * * *'

name: "Update github_meta.json"

jobs:
  update_github_meta:
    runs-on: ubuntu-latest
    env:
      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}

    steps:
      - uses: actions/checkout@v2

      - uses: r-lib/actions/setup-r@v2
        with:
          use-public-rspm: true

      - name: Install dependencies
        uses: r-lib/actions/setup-r-dependencies@v2

      - name: Update and commit
        run: |
          # Update github_meta.json
          Rscript ./scripts/github_meta.R

          # detect changes (the code is derived from https://stackoverflow.com/a/3879077)
          git add ./github_meta.json
          git update-index --refresh
          if ! git diff-index --quiet HEAD -- ./github_meta.json; then
            git config --local user.name 'github-actions[bot]'
            git config --local user.email 'github-actions[bot]@users.noreply.github.com'
            git commit -m "Update github_meta.json [skip ci]"
            git push origin "${{ github.ref }}"
          else
            echo "No changes"
          fi