name: macOS Package
on:
  push:
    branches:
      - master
      - maint
      - next
    tags:
      - "v*"
  pull_request:
  workflow_dispatch:

env:
  CARGO_TERM_COLOR: always

jobs:
  determine-versioning:
    runs-on: macos-latest
    outputs:
      macos_package_version: ${{ steps.macos_version.outputs.macos_package_version }}
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Derive macOS package version
        id: macos_version
        shell: bash
        run: |
          : ${GITHUB_OUTPUT:=/tmp/github_output}

          BASE_VERSION=$(grep '^version' Cargo.toml | head -1 | sed 's/.*"\(.*\)"/\1/')
          if [[ "$GITHUB_REF" == refs/tags/* ]]; then
            VERSION="${GITHUB_REF_NAME#v}"
          else
            BRANCH=$(echo "$GITHUB_REF_NAME" | sed 's|[^A-Za-z0-9]|.|g; s/\.\.+/./g; s/^\.//; s/\.$//')
            HEIGHT=$(git rev-list --count HEAD)
            HASH=$(git rev-parse --short HEAD)
            if [[ -z "$BRANCH" ]]; then
              BRANCH="ref"
            fi
            VERSION="${BASE_VERSION}+${BRANCH}.${HEIGHT}.${HASH}"
          fi

          echo "macos_package_version=${VERSION}" >> "$GITHUB_OUTPUT"

  build:
    name: Build macOS package (${{ matrix.arch }})
    runs-on: ${{ matrix.os }}
    needs: determine-versioning

    strategy:
      fail-fast: false
      matrix:
        include:
          - os: macos-latest
            arch: arm64
            target: aarch64-apple-darwin
          - os: macos-latest
            arch: x86_64
            target: x86_64-apple-darwin

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set SOURCE_DATE_EPOCH from git
        run: echo "SOURCE_DATE_EPOCH=$(git log -1 --format=%ct)" >> "$GITHUB_ENV"

      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@stable

      - name: Add cross-compile target
        run: rustup target add ${{ matrix.target }}

      - name: Cache Cargo registry + build
        uses: actions/cache@v4
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            target
          key: macos-release-${{ matrix.arch }}-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: |
            macos-release-${{ matrix.arch }}-

      - name: Build release binaries
        run: cargo build --release --target ${{ matrix.target }}

      - name: Build macOS package
        run: |
          packaging/macos/build-pkg.sh \
            --version "${{ needs.determine-versioning.outputs.macos_package_version }}" \
            --target ${{ matrix.target }} \
            --no-build

      - name: Resolve macOS asset path
        id: macos-assets
        shell: bash
        run: |
          : ${GITHUB_OUTPUT:=/tmp/github_output}

          PKG_FILE=$(find deploy -maxdepth 1 -type f -name "fips-*-macos-*.pkg" | sort | head -n 1)
          if [[ -z "$PKG_FILE" ]]; then
            echo "Missing macOS package" >&2
            exit 1
          fi

          echo "pkg=$PKG_FILE" >> "$GITHUB_OUTPUT"

      - name: SHA-256 hash
        run: |
          echo "==> macOS release asset:"
          shasum -a 256 "${{ steps.macos-assets.outputs.pkg }}"

      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: fips_${{ needs.determine-versioning.outputs.macos_package_version }}_${{ matrix.arch }}_macos
          path: ${{ steps.macos-assets.outputs.pkg }}
          retention-days: 30

      - name: Build summary
        run: |
          echo "Build Summary for macOS/${{ matrix.arch }}:"
          echo "  Package: ${{ steps.macos-assets.outputs.pkg }}"

  release:
    name: Publish macOS assets to GitHub Release
    runs-on: ubuntu-latest
    needs: build
    if: startsWith(github.ref, 'refs/tags/')
    permissions:
      contents: write

    steps:
      - name: Download macOS artifacts
        uses: actions/download-artifact@v4
        with:
          path: dist
          merge-multiple: true

      - name: Generate macOS release checksums
        run: |
          cd dist
          find . -maxdepth 1 -type f -name '*.pkg' -printf '%P\n' \
            | LC_ALL=C sort \
            | xargs sha256sum \
            > checksums-macos.txt

      - name: Wait for tag release
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          for attempt in $(seq 1 20); do
            if gh release view "${GITHUB_REF_NAME}" --repo "${GITHUB_REPOSITORY}" >/dev/null 2>&1; then
              exit 0
            fi
            echo "Release ${GITHUB_REF_NAME} not available yet; waiting..."
            sleep 15
          done

          echo "Timed out waiting for release ${GITHUB_REF_NAME}" >&2
          exit 1

      - name: Upload macOS assets
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          gh release upload "${GITHUB_REF_NAME}" \
            dist/*.pkg \
            dist/checksums-macos.txt \
            --clobber \
            --repo "${GITHUB_REPOSITORY}"