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@ed7a3b1fda3918c0306d1b724322adc0b8cc0a90  # v1.7.0
        with:
          xcode-version: latest-stable

      - name: Check out repository code
        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
        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@55cc8345863c7cc4c66a329aec7e433d2d1c52a9  # v6.1.0
        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
        env:
          BAZEL_CACHE_PASSWORD: ${{ secrets.BAZEL_CACHE_PASSWORD }}
        run: |
          # When the secret is present (push / dispatch / private repo PR)
          # add authed gRPC + Remote Asset API + uploads on top of the
          # .bazelrc anon HTTPS read-only cache. Fork PRs have no secret
          # and just use the anon read path.
          REMOTE_FLAGS=()
          if [ -n "${BAZEL_CACHE_PASSWORD}" ]; then
            TOKEN_B64=$(printf 'ci:%s' "${BAZEL_CACHE_PASSWORD}" | base64 | tr -d '\n')
            # Mask the derived token so it cannot leak in build logs.
            # GH auto-masks the raw secret but not base64-of-secret.
            echo "::add-mask::${TOKEN_B64}"
            REMOTE_FLAGS=(
              --remote_cache=grpcs://bazel.precisioninno.com:443
              --experimental_remote_downloader=grpcs://bazel.precisioninno.com:443
              --remote_upload_local_results=true
              --remote_header="Authorization=Basic ${TOKEN_B64}"
            )
          fi
          # Trace the bazelisk invocation so we can confirm remote flags are
          # present. TOKEN_B64 is already masked above, so it prints as ***.
          set -x
          bazelisk build \
            "${REMOTE_FLAGS[@]}" \
            --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@55cc8345863c7cc4c66a329aec7e433d2d1c52a9  # v6.1.0
        with:
          path: ~/.cache/bazel-disk-cache
          key: ${{ runner.os }}-bazel-${{ github.sha }}