Fix : #679 #32

	name: "Apply issue labels to PR"

	on:
	pull_request_target:
	types:
	- opened

	jobs:
	label_on_pr:
	runs-on: ubuntu-latest

	permissions:
	contents: none
	issues: read
	pull-requests: write

	steps:
	- name: Apply labels from linked issue to PR
	uses: actions/github-script@v5
	with:
	github-token: ${{ secrets.GITHUB_TOKEN }}
	script: \|
	async function getLinkedIssues(owner, repo, prNumber) {
	const query = `query GetLinkedIssues($owner: String!, $repo: String!, $prNumber: Int!) {
	repository(owner: $owner, name: $repo) {
	pullRequest(number: $prNumber) {
	closingIssuesReferences(first: 10) {
	nodes {
	number
	labels(first: 10) {
	nodes {
	name
	}
	}
	}
	}
	}
	}
	}`;

	const variables = {
	owner: owner,
	repo: repo,
	prNumber: prNumber,
	};

	const result = await github.graphql(query, variables);
	return result.repository.pullRequest.closingIssuesReferences.nodes;
	}

	const pr = context.payload.pull_request;
	const linkedIssues = await getLinkedIssues(
	context.repo.owner,
	context.repo.repo,
	pr.number
	);

	const labelsToAdd = new Set();
	for (const issue of linkedIssues) {
	if (issue.labels && issue.labels.nodes) {
	for (const label of issue.labels.nodes) {
	labelsToAdd.add(label.name);
	}
	}
	}

	if (labelsToAdd.size) {
	await github.rest.issues.addLabels({
	owner: context.repo.owner,
	repo: context.repo.repo,
	issue_number: pr.number,
	labels: Array.from(labelsToAdd),
	});
	}

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