release.yml

name: release

on:
  push:
    tags:
      - '*'

jobs:

  build-package:
    name: build-package
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        build:
          - linux
        include:
          - build: linux
            os: ubuntu-22.04
            target: x86_64-unknown-linux-musl
            binary_ext:
    env:
      # Backtraces for panics.
      RUST_BACKTRACE: 1
      TARGET_FLAGS:
      TARGET_DIR: ./target
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Prepare environment
        shell: bash
        run: |
          printf 'TARGET_FLAGS=--target %s\n' "${{ matrix.target }}" >> $GITHUB_ENV
          printf 'TARGET_DIR=./target/${{ matrix.target }}\n' >> $GITHUB_ENV
          printf 'RELEASE_VERSION=%s\n' "${GITHUB_REF#refs/tags/}" >> $GITHUB_ENV
          printf 'RELEASE_BINARY=%s\n' "target/${{ matrix.target }}/release/commitmsgfmt${{ matrix.binary_ext }}" >> $GITHUB_ENV

      # So much cruft just to install Asciidoctor.
      # It's possible to do something like
      #   run: ./ci/install-${{ matrix.os }}
      # but I couldn't get Windows to do anything that way.
      - name: Install dependencies (Ubuntu)
        if: matrix.os == 'ubuntu-22.04'
        run: |
          sudo apt-get update
          sudo apt-get install --yes --no-install-recommends \
            asciidoctor

      - name: Install dependencies (Windows)
        if: matrix.os == 'windows-2022'
        run: gem install asciidoctor

      - name: Install dependencies (macOS)
        if: matrix.os == 'macos-12'
        run: brew install asciidoctor

      - name: Install Rust
        uses: dtolnay/rust-toolchain@master
        with:
          # Build all releases on nightly for latest optimizations.
          toolchain: nightly
          targets: ${{ matrix.target }}

      - name: Install Cross
        run: cargo install cross

      - name: Build release
        run: cross build --verbose ${{ env.TARGET_FLAGS }}

      - name: Strip release binary
        if: matrix.build == 'linux' || matrix.build == 'macos'
        run: strip "${{ env.RELEASE_BINARY }}"

      - name: Assemble package
        shell: bash
        run: |
          package="commitmsgfmt-${{ env.RELEASE_VERSION }}-${{ matrix.target }}"
          mkdir -p "$package"

          asciidoctor --doctype manpage --backend manpage "doc/*.adoc"
          cp "doc/commitmsgfmt.1" "$package"
          cp LICENSE.txt "$package"
          cp README.md "$package"
          cp CHANGELOG.md "$package"
          cp -r contrib "$package"
          cp "${{ env.RELEASE_BINARY }}" "$package"

          if [[ "${{ matrix.os }}" = 'windows-2022' ]]
          then
            7z a "$package.zip" "$package"
            printf 'ASSET=%s\n' "$package.zip" >> $GITHUB_ENV
          else
            tar caf "$package.tar.gz" "$package"
            printf 'ASSET=%s\n' "$package.tar.gz" >> $GITHUB_ENV
          fi

      - name: Upload package
        uses: softprops/action-gh-release@v1
        with:
          draft: true
          tag_name: ${{ env.RELEASE_VERSION }}
          files: ${{ env.ASSET }}