name: Build on macOS
on:
  push:
    branches:
      - master # Updated to strictly track master
  pull_request:
  workflow_dispatch:

jobs:
  Mac-Build:
    if: github.repository_owner != 'The-OpenROAD-Project-private'
    runs-on: macos-latest
    steps:
      - name: Setup xcode
        uses: maxim-lobanov/setup-xcode@v1
        with:
          xcode-version: latest-stable

      - name: Check out repository code
        uses: actions/checkout@v6
        with:
          submodules: 'recursive'

      # 1. RESTORE: All jobs (PRs, manual runs, master) get to read the cache
      - name: Restore Bazel Disk Cache
        uses: actions/cache/restore@v5
        with:
          path: ~/.cache/bazel-disk-cache
          key: ${{ runner.os }}-bazel-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-bazel-

      - name: Install Bazelisk
        run: brew install bazelisk

      - name: Build OpenROAD
        run: |
          bazelisk build \
            --disk_cache=~/.cache/bazel-disk-cache \
            --experimental_disk_cache_gc_max_size=5G \
            --//:platform=gui //:openroad

      # 2. SAVE: Only executes if this is a push/merge directly to the master branch
      - name: Save Bazel Disk Cache
        if: github.ref == 'refs/heads/master' && github.event_name == 'push'
        uses: actions/cache/save@v5
        with:
          path: ~/.cache/bazel-disk-cache
          key: ${{ runner.os }}-bazel-${{ github.sha }}