Modernize clang-format file #5

	name: clang-format check for ls1

	on:
	push:
	# pushes to master
	branches: [ master ]
	pull_request:
	# PRs to master
	branches: [ master ]

	# abort old runs if a new one is started
	concurrency:
	group: ${{ github.head_ref }}-format-test
	cancel-in-progress: true

	jobs:
	clang-format-check:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v3

	- name: Install clang-format
	run: sudo apt-get install -y clang-format

	- name: Run clang-format and check for differences
	run: \|
	# Run clang-format and get changes
	clang-format -i $(find src -name ".h" -or -name ".cpp")
	git diff > patch.diff

	- name: Check changes
	id: check_diff
	run: \|
	if [ -s patch.diff ]; then
	echo "Formatting issues detected!"
	echo "::set-output name=formatting_issues::true"
	else
	echo "No formatting issues found"
	echo "::set-output name=formatting_issues::false"
	fi

	- name: Fail if clang-format found issues
	if: ${{ steps.check_diff.outputs.formatting_issues == 'true' }}
	run: exit 1

	- name: Post comment if issues found
	if: ${{ steps.check_diff.outputs.formatting_issues == 'true' }}
	uses: actions/github-script@v5
	with:
	script: \|
	const { context, github } = require('@actions/github');
	const issue_number = context.payload.pull_request.number;

	const body = `The CI detected formatting issues in this pull request. Please run clang-format locally to resolve them.`;

	await github.issues.createComment({
	...context.repo,
	issue_number: issue_number,
	body: body
	});

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