name: Release


env:
  MIN_SUPPORTED_RUST_VERSION: "1.51.0"
  CICD_INTERMEDIATES_DIR: "_cicd-intermediates"

on:
  push:
    tags:
      - "v*"

  release:
    types: [created]

jobs:
  build:
    name: ${{ matrix.job.os }} (${{ matrix.job.target }})
    runs-on: ${{ matrix.job.os }}
    strategy:
      fail-fast: false
      matrix:
        job:
          - { os: ubuntu-18.04 , target: x86_64-unknown-linux-gnu    }
          - { os: macos-10.15  , target: x86_64-apple-darwin         }
    steps:
    - name: Checkout source code
      uses: actions/checkout@v2

    - name: Install prerequisites
      shell: bash
      run: |
        case ${{ matrix.job.target }} in
          arm-unknown-linux-gnueabihf) sudo apt-get -y update ; sudo apt-get -y install gcc-arm-linux-gnueabihf ;;
          aarch64-unknown-linux-gnu) sudo apt-get -y update ; sudo apt-get -y install gcc-aarch64-linux-gnu ;;
        esac

    - name: Extract crate information
      shell: bash
      run: |
        echo "PROJECT_NAME=$(sed -n 's/^name = "\(.*\)"/\1/p' Cargo.toml)" >> $GITHUB_ENV
        echo "PROJECT_VERSION=$(sed -n 's/^version = "\(.*\)"/\1/p' Cargo.toml | head -n1)" >> $GITHUB_ENV
        echo "PROJECT_MAINTAINER=$(sed -n 's/^authors = \["\(.*\)"\]/\1/p' Cargo.toml)" >> $GITHUB_ENV
        echo "PROJECT_HOMEPAGE=$(sed -n 's/^homepage = "\(.*\)"/\1/p' Cargo.toml)" >> $GITHUB_ENV

    - name: Install Rust toolchain
      uses: actions-rs/toolchain@v1
      with:
        toolchain: stable
        target: ${{ matrix.job.target }}
        override: true
        profile: minimal # minimal component installation (ie, no documentation)

    - name: Show version information (Rust, cargo, GCC)
      shell: bash
      run: |
        gcc --version || true
        rustup -V
        rustup toolchain list
        rustup default
        cargo -V
        rustc -V

    - name: Build
      uses: actions-rs/cargo@v1
      with:
        use-cross: ${{ matrix.job.use-cross }}
        command: build
        args: --release --target=${{ matrix.job.target }}

    - name: Strip debug information from executable
      id: strip
      shell: bash
      run: |
        # Figure out suffix of binary
        EXE_suffix=""
        case ${{ matrix.job.target }} in
          *-pc-windows-*) EXE_suffix=".exe" ;;
        esac;

        # Figure out what strip tool to use if any
        STRIP="strip"
        case ${{ matrix.job.target }} in
          arm-unknown-linux-gnueabihf) STRIP="arm-linux-gnueabihf-strip" ;;
          aarch64-unknown-linux-gnu) STRIP="aarch64-linux-gnu-strip" ;;
          *-pc-windows-msvc) STRIP="" ;;
        esac;

        # Setup paths
        BIN_DIR="${{ env.CICD_INTERMEDIATES_DIR }}/stripped-release-bin/"
        mkdir -p "${BIN_DIR}"
        BIN_NAME="${{ env.PROJECT_NAME }}${EXE_suffix}"
        BIN_PATH="${BIN_DIR}/${BIN_NAME}"

        # Copy the release build binary to the result location
        cp "target/${{ matrix.job.target }}/release/${BIN_NAME}" "${BIN_DIR}"

        # Also strip if possible
        if [ -n "${STRIP}" ]; then
          "${STRIP}" "${BIN_PATH}"
        fi

        # Let subsequent steps know where to find the (stripped) bin
        echo ::set-output name=BIN_PATH::${BIN_PATH}
        echo ::set-output name=BIN_NAME::${BIN_NAME}

    - name: Create tarball
      id: package
      shell: bash
      run: |
        PKG_suffix=".tar.gz" ; case ${{ matrix.job.target }} in *-pc-windows-*) PKG_suffix=".zip" ;; esac;
        PKG_BASENAME=${PROJECT_NAME}-v${PROJECT_VERSION}-${{ matrix.job.target }}
        PKG_NAME=${PKG_BASENAME}${PKG_suffix}
        echo ::set-output name=PKG_NAME::${PKG_NAME}

        PKG_STAGING="${{ env.CICD_INTERMEDIATES_DIR }}/package"
        ARCHIVE_DIR="${PKG_STAGING}/${PKG_BASENAME}/"
        mkdir -p "${ARCHIVE_DIR}"
        mkdir -p "${ARCHIVE_DIR}/completions"

        # Binary
        cp "${{ steps.strip.outputs.BIN_PATH }}" "$ARCHIVE_DIR"

        # README, LICENSE and CHANGELOG files
        cp "README.md" "LICENSE" "$ARCHIVE_DIR"

        # Shell completions
        for sh in 'bash' 'fish' 'zsh'; do
          "${{ steps.strip.outputs.BIN_PATH }}" gen-completions -s $sh -o "${ARCHIVE_DIR}/completions"
        done

        # base compressed package
        pushd "${PKG_STAGING}/" >/dev/null
        case ${{ matrix.job.target }} in
          *-pc-windows-*) 7z -y a "${PKG_NAME}" "${PKG_BASENAME}"/* | tail -2 ;;
          *) tar czf "${PKG_NAME}" "${PKG_BASENAME}"/* ;;
        esac;
        popd >/dev/null

        # Let subsequent steps know where to find the compressed package
        echo ::set-output name=PKG_PATH::"${PKG_STAGING}/${PKG_NAME}"

    - name: Create Debian package
      id: debian-package
      shell: bash
      if: startsWith(matrix.job.os, 'ubuntu')
      run: |
        cargo install cargo-deb
        cargo deb

        case ${{ matrix.job.target }} in
          aarch64-*-linux-*) DPKG_ARCH=arm64 ;;
          arm-*-linux-*hf) DPKG_ARCH=armhf ;;
          i686-*-linux-*) DPKG_ARCH=i686 ;;
          x86_64-*-linux-*) DPKG_ARCH=amd64 ;;
          *) DPKG_ARCH=notset ;;
        esac;

        DPKG_NAME="${PROJECT_NAME}_${PROJECT_VERSION}_${DPKG_ARCH}.deb"
        DPKG_PATH="target/debian/${PKG_BASENAME}.deb"
        DPKG_PATH="target/debian/${DPKG_NAME}"

        echo ::set-output name=DPKG_NAME::${DPKG_NAME}
        echo ::set-output name=DPKG_PATH::${DPKG_PATH}

    - name: "Artifact upload: tarball"
      uses: actions/upload-artifact@master
      with:
        name: ${{ steps.package.outputs.PKG_NAME }}
        path: ${{ steps.package.outputs.PKG_PATH }}

    - name: "Artifact upload: Debian package"
      uses: actions/upload-artifact@master
      if: steps.debian-package.outputs.DPKG_NAME
      with:
        name: ${{ steps.debian-package.outputs.DPKG_NAME }}
        path: ${{ steps.debian-package.outputs.DPKG_PATH }}

    - name: Check for release
      id: is-release
      shell: bash
      run: |
        unset IS_RELEASE ; if [[ $GITHUB_REF =~ ^refs/tags/v[0-9].* ]]; then IS_RELEASE='true' ; fi
        echo ::set-output name=IS_RELEASE::${IS_RELEASE}

    - name: Publish archives and packages
      uses: softprops/action-gh-release@v1
      if: steps.is-release.outputs.IS_RELEASE
      with:
        files: |
          ${{ steps.package.outputs.PKG_PATH }}
          ${{ steps.debian-package.outputs.DPKG_PATH }}
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}