release.yml

# Based on https://eugene-babichenko.github.io/blog/2020/05/09/github-actions-cross-platform-auto-releases/
# and https://github.com/BurntSushi/ripgrep/blob/master/.github/workflows/release.yml

name: release
on:
  push:
    tags:
    - "v[0-9]+.*"

jobs:
  create-release:
    name: create-release
    runs-on: ubuntu-latest
    # env:
      # Set to force version number, e.g., when no tag exists.
      # RS_VERSION: TEST-0.0.0
    outputs:
      upload_url: ${{ steps.release.outputs.upload_url }}
      rs_version: ${{ env.RS_VERSION }}
    steps:
      - name: Get the release version from the tag
        shell: bash
        if: env.RS_VERSION == ''
        run: |
          # Apparently, this is the right way to get a tag name. Really?
          #
          # See: https://github.community/t5/GitHub-Actions/How-to-get-just-the-tag-name/m-p/32167/highlight/true#M1027
          # echo "RS_VERSION=${GITHUB_REF#refs/tags/}" >> $GITHUB_ENV
          # echo echo ::set-output name=RS_VERSION::${GITHUB_REF#refs/tags/}
          echo "RS_VERSION=${{ github.ref_name }}" >> $GITHUB_ENV 
          echo "version is: ${{ env.RS_VERSION }}"
          
      - name: Create GitHub release
        id: release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: ${{ env.RS_VERSION }}
          release_name: ${{ env.RS_VERSION }}

  build-release:
    name: build-release
    needs: ['create-release']
    runs-on: ${{ matrix.os }}
    env:
      # For some builds, we use cross to test on 32-bit and big-endian
      # systems.
      CARGO: cargo
      # When CARGO is set to CROSS, this is set to `--target matrix.target`.
      TARGET_FLAGS: ""
      # When CARGO is set to CROSS, TARGET_DIR includes matrix.target.
      TARGET_DIR: ./target
      # Emit backtraces on panics.
      RUST_BACKTRACE: 1
    strategy:
      matrix:
        build: [linux, macos, win-msvc, win-gnu, win32-msvc]
        include:
        - build: linux
          os: ubuntu-latest
          rust: stable
          target: x86_64-unknown-linux-musl
        - build: macos
          os: macos-latest
          rust: stable
          target: x86_64-apple-darwin
        - build: win-msvc
          os: windows-latest
          rust: stable
          target: x86_64-pc-windows-msvc
        - build: win-gnu
          os: windows-latest
          rust: stable-x86_64-gnu
          target: x86_64-pc-windows-gnu
        - build: win32-msvc
          os: windows-latest
          rust: stable
          target: i686-pc-windows-msvc

    steps:
    - name: Checkout repository
      uses: actions/checkout@v2
      with:
        fetch-depth: 1

#     - name: Install packages (Ubuntu)
#       if: matrix.os == 'ubuntu-18.04'
#       run: |
#         ci/ubuntu-install-packages
#     - name: Install packages (macOS)
#       if: matrix.os == 'macos-latest'
#       run: |
#         ci/macos-install-packages
    - name: Install Rust
      uses: actions-rs/toolchain@v1
      with:
        toolchain: ${{ matrix.rust }}
        profile: minimal
        override: true
        target: ${{ matrix.target }}

    - name: Cargo flags
      shell: bash
      run: |
        echo "TARGET_FLAGS=--target ${{ matrix.target }}" >> $GITHUB_ENV
        echo "TARGET_DIR=./target/${{ matrix.target }}" >> $GITHUB_ENV
    - name: Show command used for Cargo
      run: |
        echo "cargo command is: ${{ env.CARGO }}"
        echo "target flag is: ${{ env.TARGET_FLAGS }}"
        echo "target dir is: ${{ env.TARGET_DIR }}"
    - name: Build release binary
      run: ${{ env.CARGO }} build --verbose --release ${{ env.TARGET_FLAGS }}

    - name: Strip release binary (linux and macos)
      if: matrix.build == 'linux' || matrix.build == 'macos'
      run: strip "target/${{ matrix.target }}/release/region_scanner"

    - name: Build archive
      shell: bash
      run: |
        staging="region_scanner-${{ needs.create-release.outputs.rs_version }}-${{ matrix.target }}"
        mkdir -p "$staging"
        cp {README.md,LICENSE} "$staging/"
        if [ "${{ matrix.os }}" = "windows-2019" ]; then
          cp "target/${{ matrix.target }}/release/region_scanner.exe" "$staging/"
          7z a "$staging.zip" "$staging"
          echo "ASSET=$staging.zip" >> $GITHUB_ENV
        else
          cp "target/${{ matrix.target }}/release/region_scanner" "$staging/"
          tar czf "$staging.tar.gz" "$staging"
          echo "ASSET=$staging.tar.gz" >> $GITHUB_ENV
        fi
    - name: Upload release archive
      uses: actions/upload-release-asset@v1.0.1
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      with:
        upload_url: ${{ needs.create-release.outputs.upload_url }}
        asset_path: ${{ env.ASSET }}
        asset_name: ${{ env.ASSET }}
        asset_content_type: application/octet-stream