weekly-dispatch-latest-release.yml

on:
  schedule:
    - cron: '0 3 * * 0' # weekly Sunday 03:00 UTC — adjust as needed
  workflow_dispatch: {}

permissions:
  contents: read
  actions: write

jobs:
  dispatch-ci:
    runs-on: ubuntu-latest
    steps:
      - name: Find latest rls-* branch
        id: find_branch
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          latest=$(curl -s -H "Accept: application/vnd.github+json" \
            -H "Authorization: Bearer ${GITHUB_TOKEN}" \
            "https://api.github.com/repos/${{ github.repository }}/branches?per_page=100" \
            | jq -r '.[] | select(.name|startswith("rls-")) | "\(.name)\t\(.commit.commit.author.date)"' \
            | sort -t $'\t' -k2 \
            | tail -n1 \
            | cut -f1)
          if [ -z "$latest" ]; then
            echo "No rls-* branch found, exiting."
            echo "found_branch=" >> $GITHUB_OUTPUT
            exit 0
          fi
          echo "found_branch=$latest" >> $GITHUB_OUTPUT

      - name: Dispatch CI workflow on that branch
        if: steps.find_branch.outputs.found_branch != ''
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          # Set WORKFLOW_FILE to the workflow filename you want to run on the rls branch.
          # For example, if the workflow in the release branch is .github/workflows/ci.yml,
          # set WORKFLOW_FILE="ci.yml"
          WORKFLOW_FILE="ci.yml"
          TARGET_REF="${{ steps.find_branch.outputs.found_branch }}"

          echo "Dispatching workflow ${WORKFLOW_FILE} on ref ${TARGET_REF}"
          curl -s -X POST \
            -H "Accept: application/vnd.github+json" \
            -H "Authorization: Bearer ${GITHUB_TOKEN}" \
            "https://api.github.com/repos/${{ github.repository }}/actions/workflows/${WORKFLOW_FILE}/dispatches" \
            -d "{\"ref\":\"${TARGET_REF}\"}" \
            | jq .