publicip 0.3.0

# The way this works is a little weird. But basically, the create-release job
# runs purely to initialize the GitHub release itself. Once done, the upload
# URL of the release is saved as an artifact.
#
# The build-release job runs only once create-release is finished. It gets
# the release upload URL by downloading the corresponding artifact (which was
# uploaded by create-release). It then builds the release executables for each
# supported platform and attaches them as release assets to the previously
# created release.
#
# The key here is that we create the release only once.

name: Release

on:
  push:
    # Enable when testing release infrastructure on a branch.
    # branches:
    # - ag/release
    tags:
      - 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10
env:
  PKG_NAME: publicip

jobs:
  create-release:
    name: create-release
    runs-on: ubuntu-latest
    # env:
      # Set to force version number, e.g., when no tag exists.
      # PKG_VERSION: TEST-0.0.0
    steps:
      - name: Create artifacts directory
        run: mkdir artifacts

      - name: Get the release version from the tag
        if: env.PKG_VERSION == ''
        run: |
          echo "PKG_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
          echo "version is: ${{ env.PKG_VERSION }}"

      - name: Create GitHub release
        id: release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: ${{ env.PKG_VERSION }}
          release_name: ${{ env.PKG_VERSION }}

      - name: Save release upload URL to artifact
        run: echo "${{ steps.release.outputs.upload_url }}" > artifacts/release-upload-url

      - name: Save version number to artifact
        run: echo "${{ env.PKG_VERSION }}" > artifacts/release-version

      - name: Upload artifacts
        uses: actions/upload-artifact@v1
        with:
          name: artifacts
          path: artifacts

  build-release:
    name: build-release
    needs: ['create-release']
    runs-on: ${{ matrix.os }}
    env:
      # Emit backtraces on panics.
      RUST_BACKTRACE: short
    strategy:
      matrix:
        build: [linux, linux-arm, macos, win-msvc]
        include:
          - build: linux
            os: ubuntu-latest
            rust: stable
            target: x86_64-unknown-linux-musl
            usecross: false
          - build: linux-arm
            os: ubuntu-latest
            rust: stable
            target: arm-unknown-linux-musleabihf
            strip: arm-linux-musleabihf-strip
            usecross: true
          - build: macos
            os: macos-latest
            rust: stable
            target: x86_64-apple-darwin
            usecross: false
          - build: win-msvc
            os: windows-latest
            rust: stable
            target: x86_64-pc-windows-msvc
            usecross: false

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

    - name: Get release download URL
      uses: actions/download-artifact@v1
      with:
        name: artifacts
        path: artifacts

    - name: Set release upload URL and release version
      shell: bash
      run: |
        release_upload_url="$(cat artifacts/release-upload-url)"
        echo "RELEASE_UPLOAD_URL=${release_upload_url}" >> $GITHUB_ENV
        echo "release upload url: $RELEASE_UPLOAD_URL"
        release_version="$(cat artifacts/release-version)"
        echo "RELEASE_VERSION=${release_version}" >> $GITHUB_ENV
        echo "release version: $RELEASE_VERSION"

    - name: Install Rust
      uses: actions-rs/toolchain@v1
      with:
        toolchain: ${{ matrix.rust }}
        target: ${{ matrix.target }}
        profile: minimal
        override: true

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

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

    - name: Strip release binary (linux-arm)
      if: matrix.build == 'linux-arm'
      run: |
        docker run --rm -v \
          "$PWD/target:/target:Z" \
          rustembedded/cross:${{ matrix.target }} \
          ${{ matrix.strip }} \
          /target/${{ matrix.target }}/release/${{ env.PKG_NAME }}

    - name: Build archive
      shell: bash
      run: |
        staging="${{ env.PKG_NAME }}-${{ env.RELEASE_VERSION }}-${{ matrix.target }}"
        mkdir -p "$staging"

        cp {README.md,LICENSE} "$staging/"

        if [ "${{ matrix.os }}" = "windows-latest" ]; then
          cp "target/${{ matrix.target }}/release/${{ env.PKG_NAME }}.exe" "$staging/"
          7z a "$staging.zip" "$staging"
          echo "ASSET=${staging}.zip" >> $GITHUB_ENV
        else
          cp "target/${{ matrix.target }}/release/${{ env.PKG_NAME }}" "$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: ${{ env.RELEASE_UPLOAD_URL }}
        asset_path: ${{ env.ASSET }}
        asset_name: ${{ env.ASSET }}
        asset_content_type: application/octet-stream

  publish-crate:
    name: publish-crate
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2
        with:
          fetch-depth: 1
      - name: Install Rust
        uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          profile: minimal
          override: true
      - name: Login to crates.io
        uses: actions-rs/cargo@v1
        with:
          use-cross: ${{ matrix.usecross }}
          command: login
          args: ${{ secrets.CRATES_TOKEN }}
      - name: Publish to crates.io
        uses: actions-rs/cargo@v1
        with:
          use-cross: ${{ matrix.usecross }}
          command: publish