publish.yml

name: Publish Package
on:
  push:
    tags:
      - '*'
jobs:
  publish:
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v2
      - name: Setup Rust
        uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          override: true

      - name: Get current version
        id: cv
        run: |
          curr_vers=$(cargo pkgid | awk -F'#' '{ print $2 }')
          echo "Curr_Vers=${curr_vers}"
          echo ::set-output name=curr_version::${curr_vers}

      - name: Get current tag
        id: git
        run: |
          if git rev-parse --verify --quiet refs/tags/HEAD > /dev/null
          then
            curr_tag=$(git describe --tags $(git rev-list --tags --max-count=1))
            echo "Curr_Tag=${curr_tag}"
            echo ::set-output name=curr_tag::${curr_tag}
          else
            echo "No git tags found. Please create a git tag."
            exit 1
          fi

      - name: Get last tag
        id: gitlast
        run: |
          last_tag=$(git describe --tags $(git rev-list --tags --max-count=2 | tail -1))
          echo "Last_Tag=${last_tag}"
          echo ::set-output name=last_tag::${last_tag}

      - name: Check version and tag
        run: |
          curr_tag="${{ steps.git.outputs.curr_tag }}"
          curr_ver="${{ steps.cv.outputs.curr_version }}"
          last_tag="${{ steps.gitlast.outputs.last_tag }}"
          if [ $curr_tag != $curr_ver ]
          then
            echo "Current version and tag do not match!"
            exit 1
          fi
          if [[ $(printf '%s\n' "$last_tag" "$curr_tag" | sort -V | tail -n 1) != $curr_tag ]]
          then
            echo "Current tag is not newer than the last tag!"
            exit 1
          fi

      - name: Publish to crates.io
        uses: actions-rs/cargo@v1
        with:
          command: publish
          args: --token ${{ secrets.CRATES_TOKEN }}