Slack Open PRs Notification #28

	name: Slack Open PRs Notification

	on:
	schedule:
	- cron: '0 13 * * *' # 13:00 UTC daily (08:00 EST / 09:00 EDT — cron does not observe DST)
	workflow_dispatch:

	permissions:
	pull-requests: read

	jobs:
	notify-slack:
	runs-on: ubuntu-latest
	steps:
	- name: Get open PRs
	id: open-prs
	uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8
	with:
	script: \|
	const prs = await github.paginate(github.rest.pulls.list, {
	owner: context.repo.owner,
	repo: context.repo.repo,
	state: 'open',
	per_page: 100,
	});

	const count = prs.length;

	// Format each PR with plain text and bare URL (Slack auto-links URLs)
	const prList = prs.map(pr =>
	`• #${pr.number} - ${pr.title} (by ${pr.user?.login ?? 'unknown'})\n ${pr.html_url}`
	).join('\n');

	core.setOutput('count', count);

	// Use GITHUB_OUTPUT delimiter for multiline support
	const crypto = require('crypto');
	const delimiter = `PRLIST_${crypto.randomUUID()}`;
	const fs = require('fs');
	fs.appendFileSync(
	process.env.GITHUB_OUTPUT,
	`pr_list<<${delimiter}\n${prList}\n${delimiter}\n`
	);

	- name: Send open PRs summary to Slack
	if: ${{ steps.open-prs.outputs.count != '0' }}
	uses: slackapi/slack-github-action@b0fa283ad8fea605de13dc3f449259339835fc52 # v2.1.0
	with:
	webhook: ${{ secrets.SLACK_WEBHOOK_OSS_ALERTS }}
	webhook-type: incoming-webhook
	payload: \|
	{ "text": ${{ toJSON(format(':bar_chart: Open PRs in {0} ({1}): https://github.com/{0}/pulls\n{2}', github.repository, steps.open-prs.outputs.count, steps.open-prs.outputs.pr_list)) }} }

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