update-formula-list.yml

name: Update Formulae List

on:
  push:
    branches:
      - main
    paths:
      - "Formula/**"
  schedule:
    - cron: "0 0 * * 0"

permissions:
  contents: write

# Keep only the newest run for a given ref.
# Side effect: older commits can show a cancelled check in GitHub's UI because
# concurrency cancellation is reported as cancelled, not skipped/successful.
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  HOMEBREW_NO_REQUIRE_TAP_TRUST: 1

jobs:
  update-list:
    runs-on: macos-latest

    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          fetch-depth: 0

      - run: brew update

      - name: Tap the repo
        run: brew tap chenrui333/tap

      - name: Run update-list script
        run:  .github/scripts/update-list.sh

      - name: Push changes back
        if: always()
        run: |
          git fetch --no-tags origin +refs/heads/main:refs/remotes/origin/main
          git rev-parse --verify refs/remotes/origin/main >/dev/null

          if git merge-base --is-ancestor HEAD refs/remotes/origin/main; then
            echo "No local commit to push."
            exit 0
          fi

          for attempt in {1..3}; do
            git fetch --no-tags origin +refs/heads/main:refs/remotes/origin/main
            git rev-parse --verify refs/remotes/origin/main >/dev/null
            if ! git rebase refs/remotes/origin/main; then
              echo "Failed to rebase generated formula list onto origin/main." >&2
              git rebase --abort || true
              exit 1
            fi

            if git push origin HEAD:main; then
              exit 0
            fi

            echo "Push attempt $attempt failed; retrying after refreshing main."
            sleep "$((attempt * 5))"
          done

          echo "Failed to push generated formula list after 3 attempts." >&2
          exit 1