publish to crates.io #29

	name: publish to crates.io

	on:
	workflow_run:
	workflows: ["tests"]
	types:
	- completed

	jobs:
	publish:
	runs-on: ubuntu-latest
	permissions:
	contents: write

	steps:
	- name: Checkout code
	uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Set-up Rust
	uses: dtolnay/rust-toolchain@stable
	with:
	toolchain: stable

	- name: Set-up semver
	run: \|
	curl -fsSL https://deb.nodesource.com/setup_lts.x \| sudo -E bash -
	sudo apt install -y nodejs
	npm install -g semver

	- name: Get crate version
	id: crate_version
	run: \|
	VERSION=$(cargo metadata --no-deps --format-version 1 \| jq -r '.packages[0].version')
	echo "version=$VERSION" >> $GITHUB_OUTPUT

	- name: Get latest git tag
	id: latest_tag
	run: \|
	TAG=$(git describe --tags --abbrev=0 \|\| echo "")
	echo "tag=$TAG" >> $GITHUB_OUTPUT

	- name: Compare versions
	id: should_publish
	run: \|
	VERSION="${{ steps.crate_version.outputs.version }}"
	TAG="${{ steps.latest_tag.outputs.tag }}"

	if [ -z "$TAG" ]; then
	TAG="0.0.0"
	fi

	if semver -r "> $TAG" "$VERSION"; then
	echo "publish=true" >> $GITHUB_OUTPUT
	else
	echo "publish=false" >> $GITHUB_OUTPUT
	fi

	- name: Publish to crates.io
	if: steps.should_publish.outputs.publish == 'true'
	run: \|
	cargo publish
	env:
	CARGO_REGISTRY_TOKEN: ${{ secrets.CRATES_IO_TOKEN }}

	- name: Crate and push new git tag
	if: steps.should_publish.outputs.publish == 'true'
	run: \|
	git config user.name "github-actions[bot]"
	git config user.email "github-actions[bot]@users.noreply.github.com"
	git tag ${{ steps.crate_version.outputs.version }}
	git push origin ${{ steps.crate_version.outputs.version }}

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