Stale PR Slack Notification #37

	name: Stale PR Slack Notification

	on:
	schedule:
	# 8am Pacific Daylight Time (UTC-7); shifts to 7am in winter (PST/UTC-8)
	- cron: '0 15 * * 1-5'
	workflow_dispatch:
	inputs:
	include_dependabot:
	description: 'Include Dependabot PRs (security-labeled only). Off by default — volume is too high.'
	type: boolean
	default: false

	jobs:
	notify-stale-prs:
	name: Notify stale PRs via Slack webhook
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4

	- name: Extract ignored repos from pds-products.yaml
	run: \|
	python3 -c "
	import yaml, json
	with open('conf/pds-products.yaml') as f:
	data = yaml.safe_load(f)
	repos = [
	'NASA-PDS/' + r
	for p in data['products'].values()
	if p.get('ignore', False)
	for r in p.get('repositories', [])
	]
	print(json.dumps(repos))
	" > ignored_repos.json

	- name: Find open PRs (>3 days old, non-draft, non-Dependabot)
	id: stale
	env:
	GH_TOKEN: ${{ secrets.ADMIN_GITHUB_TOKEN }}
	run: \|
	COUNT=$(.github/scripts/fetch-stale-prs.sh stale_prs.json)
	echo "count=$COUNT" >> "$GITHUB_OUTPUT"

	- name: Build and send Slack message
	if: steps.stale.outputs.count != '0'
	env:
	SLACK_WORKFLOW_WEBHOOK_URL: ${{ secrets.SLACK_WORKFLOW_WEBHOOK_URL }}
	INCLUDE_DEPENDABOT: ${{ inputs.include_dependabot \|\| 'false' }}
	run: \|
	if [ -z "$SLACK_WORKFLOW_WEBHOOK_URL" ]; then
	echo "SLACK_WORKFLOW_WEBHOOK_URL secret is not set — skipping notification"
	exit 0
	fi

	.github/scripts/build-slack-payload.sh stale_prs.json ignored_repos.json > payload.json

	curl -s -f -X POST "$SLACK_WORKFLOW_WEBHOOK_URL" \
	-H 'Content-Type: application/json' \
	-d @payload.json

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