ci: make the PR from a feature branch to avoid force pushing main branch #302

	name: Label PRs

	on:
	pull_request_target:
	types: [opened, edited, synchronize, reopened]

	jobs:
	label_pr:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/github-script@v3
	with:
	github-token: ${{ secrets.GITHUB_TOKEN }}
	script: \|
	const pr_welcome_msg = `Thanks for making a pull request! 😃\nOne of the maintainers will review and advise on the next steps.`;
	// https://github.com/commitizen/conventional-commit-types
	const valid_pr_types = ['feat', 'fix', 'docs', 'style', 'refactor', 'perf', 'test', 'build', 'ci', 'chore', 'revert'];

	if(context.payload.pull_request.comments === 0) {
	await github.issues.createComment({ ...context.repo, issue_number: context.payload.number, body: pr_welcome_msg});
	}

	const title = context.payload.pull_request.title;
	const results = /^(\w+)($\w+$)?!?:/.exec(title);
	if (results === null) return core.setFailed(`The title does not follow conventional commits spec: https://www.conventionalcommits.org/en/v1.0.0/#summary Title: ${title}`);

	const pr_type = results[1];
	core.info(`pr_type: ${pr_type}`);

	if (!valid_pr_types.includes(pr_type)) return core.setFailed(`Unknown pull request type: ${pr_type}`);

	const labels = context.payload.pull_request.labels;
	const new_labels = labels.filter(label => !valid_pr_types.includes(label.name)); // keep all labels that are not in valid_pr_types
	new_labels.push({name: pr_type});
	await github.issues.update({ ...context.repo, issue_number: context.payload.number, labels: new_labels });

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