Remove Unused Labels #1

	name: Remove Unused Labels
	on:
	schedule:
	- cron: '0 * * * *' # 每周运行一次
	workflow_dispatch: # 手动触发

	jobs:
	cleanup:
	runs-on: ubuntu-latest
	permissions:
	issues: write
	pull-requests: write
	contents: read
	steps:
	- name: Checkout Repository
	uses: actions/checkout@v2

	- name: Fetch All Issues and PRs
	id: fetch_issues_prs
	uses: actions/github-script@v6
	with:
	script: \|
	const issues = await github.paginate(github.rest.issues.listForRepo, {
	owner: context.repo.owner,
	repo: context.repo.repo,
	state: 'all',
	per_page: 100
	});

	const labelsInUse = new Set();
	issues.forEach(issue => {
	issue.labels.forEach(label => {
	labelsInUse.add(label.name);
	});
	});

	return Array.from(labelsInUse);

	- name: Fetch All Labels
	id: fetch_labels
	uses: actions/github-script@v6
	with:
	script: \|
	const labels = await github.paginate(github.rest.issues.listLabelsForRepo, {
	owner: context.repo.owner,
	repo: context.repo.repo,
	per_page: 100
	});

	return labels.map(label => label.name);

	- name: Remove Unused Labels
	if: steps.fetch_issues_prs.outputs.result && steps.fetch_labels.outputs.result
	uses: actions/github-script@v6
	with:
	script: \|
	const labelsInUse = new Set(JSON.parse(steps.fetch_issues_prs.outputs.result));
	const allLabels = JSON.parse(steps.fetch_labels.outputs.result);

	const unusedLabels = allLabels.filter(label => !labelsInUse.has(label));

	for (const label of unusedLabels) {
	await github.rest.issues.deleteLabel({
	owner: context.repo.owner,
	repo: context.repo.repo,
	name: label
	});
	console.log(`Deleted label: ${label}`);
	}

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