sync_latest_rakudo_release.yml

# See https://stackoverflow.com/questions/58465057/trigger-a-github-action-when-another-repository-creates-a-new-release
# 
# This Action works only because of the available "build_rakudo-star.yml" Action.
## Actually this here triggers the other build Action by adding a new TAG (Rakudo releases are having TAGs)
## TODO: switch to env vars later

name: Synchronize Rakudo Star with the latest Rakudo release

on:
  schedule: # Mondays and Thursdays, at 23:55 UTC
    - cron:  '55 23 * * 1,4'
  workflow_dispatch:

env:
  RKD_REVISION: "01" # Change this if a build revision ever changes. 

jobs:
  synchronize_star_release_version:
    runs-on: ubuntu-latest

    steps:
    - name: Check the latest Rakudo release version
      id: rakudo-release
      run: |
        echo ::set-output name=release::$(curl -v --stderr - https://github.com/rakudo/rakudo/releases/latest | grep -i "location: " | grep -Po "(\d+\.\d+)(\\.[0-9]+)?")

    - name: Check the latest Rakudo Star release version
      id: star-release
      run: |
        echo ::set-output name=release::$(curl -v --stderr - https://github.com/rakudo/star/releases/latest | grep -i "location: " | grep -Po "(\d+\.\d+)(\\.[0-9]+)?")

    - name: Show the found Rakudo releases
      run: |
        echo "Rakudo latest is: ${{ steps.rakudo-release.outputs.release }}"
        echo "Rakudo Star latest is: ${{ steps.star-release.outputs.release }}"

    - name: Compare the latest Rakudo and Rakudo Star releases
      id: update-star-release
      if: (steps.rakudo-release.outputs.release && steps.star-release.outputs.release && (steps.rakudo-release.outputs.release != steps.star-release.outputs.release))
      run: echo ::set-output name=update_star_release::'true'

    - name: Checkout Rakudo Star repository
      if: steps.update-star-release.outputs.update_star_release
      uses: actions/checkout@v4
      with:
        token: ${{ secrets.ACTIONS_RAKUDO_SYNC }}
        fetch-depth: 0
        ref: ${{ github.head_ref }}

    - name: Update the RSTAR core component versions in /etc/fetch_core.txt
      if: steps.update-star-release.outputs.update_star_release
      run: |
        ls -lad *
        for RSTAR_COMPONENT in moarvm_version nqp_version rakudo_version; do
          sed -i -r s#$RSTAR_COMPONENT\=\([0-9]\)\+.\([0-9]\)\+\(.[0-9]\)?#$RSTAR_COMPONENT=${{ steps.rakudo-release.outputs.release }}# etc/fetch_core.txt
        done

    - name: Write the Release version
      if: steps.update-star-release.outputs.update_star_release
      run: echo "${{ steps.rakudo-release.outputs.release }}" "===>" $(date) > RELEASE

    - name: Publish latest Rakudo Star release
      if: steps.update-star-release.outputs.update_star_release
      uses: EndBug/add-and-commit@v9
      with:
        message: "Following the https://github.com/rakudo/rakudo/ release cycle, see https://github.com/rakudo/rakudo/releases/tag/${{ steps.rakudo-release.outputs.release }} for release informations"
        tag: "${{ steps.rakudo-release.outputs.release }}"
        push: "true"