automatic_release.yml

name: "tagged-release"

on:
  push:
    branches:
      - "main"

permissions:
  contents: write

jobs:
  check_files:
    name: "Check files"
    runs-on: "ubuntu-latest"
    outputs:
      FILES_UPDATED: ${{ steps.compare_commits.outputs.FILES_UPDATED }}
      DATE: ${{ steps.compare_commits.outputs.DATE }}
      
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 3
          
      - id: compare_commits
        shell: pwsh
        run: |
          # Check if 'last_run_date' file was changed in the latest commit
          $LastCommitDiff = git diff --name-only HEAD^ HEAD | Where-Object { $_ -match "^last_run_date$" }
          $DateChanged = $LastCommitDiff.Length -gt 0
          
          # Check if any publication was updated during last SuttaPublisher run
          # (compare next to last and third to last commits)
          $NextToLastCommitDiff = git diff --name-only HEAD^^ HEAD^ | Where-Object { $_ -notmatch "^(last_run_date|\.\/github.*)$" }
          $PublicationsChanged = $NextToLastCommitDiff.Length -gt 0
          
          # Save output
          $FilesUpdated = $DateChanged -and $PublicationsChanged
          "FILES_UPDATED=$FilesUpdated" >> $env:GITHUB_OUTPUT
          $Date = Get-Date -Format 'yyyy-MM-dd'
          "DATE=$Date" >> $env:GITHUB_OUTPUT

  make_release:
    name: Make release
    runs-on: ubuntu-latest
    needs: check_files
    if: needs.check_files.outputs.FILES_UPDATED == 'True'
    
    steps:
      - uses: marvinpinto/action-automatic-releases@latest
        with:
          repo_token: "${{ secrets.GITHUB_TOKEN }}"
          prerelease: false
          automatic_release_tag: "editions-${{ needs.check_files.outputs.DATE }}"
      
      - uses: dev-drprasad/delete-older-releases@v0.2.0
        with:
          keep_latest: 1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}