update_post_dates.yml

name: Update post dates

on:
  push:
    branches:
      - 'main'

jobs:
  Update-post-dates:
    runs-on: ubuntu-latest
    container:
      image: "rocker/tidyverse:4.2.1"
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          ref: main  # replace with the branch you want to checkout

      - name: Run update_post_dates
        run: Rscript R/update_post_dates.R  # running the R script with Rscript

      - name: Configure Git safe directory
        run: git config --global --add safe.directory /__w/blog/blog

      - name: Check for changes
        id: check_changes
        run: |
          git config --global user.name 'github-actions[bot]'
          git config --global user.email 'github-actions[bot]@users.noreply.github.com'
          if [[ `git status --porcelain` ]]; then
            echo "changes detected"
            echo "changes=true" >> $GITHUB_ENV
          else
            echo "no changes"
            echo "changes=false" >> $GITHUB_ENV
          fi

      - name: Commit results
        if: env.changes == 'true'
        run: |
          git add .
          git commit -m "Auto-update blog post date"
          git push origin main
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}