Notify Stale Pull Requests to Slack #45

	name: Notify Stale Pull Requests to Slack

	on:
	schedule:
	- cron: '0 0 * * *'
	workflow_dispatch:

	jobs:
	notify:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Check for stale pull requests
	id: check_prs
	run: \|
	stale_prs=$(gh pr list --state open --json createdAt,url --jq '.[] \| select(( now - (.createdAt \| fromdateiso8601)) > 172800) \| .url')
	{
	echo 'stale_prs<<EOF'
	echo "$stale_prs"
	echo 'EOF'
	} >> $GITHUB_OUTPUT
	env:
	GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

	- name: Format stale pull requests
	if: steps.check_prs.outputs.stale_prs != ''
	id: format_prs
	run: \|
	fmt_prs=$(echo "${{ steps.check_prs.outputs.stale_prs }}" \| sed 's/^/• /' \| sed 's/$/\\n/')
	{
	echo 'fmt_prs<<EOF'
	echo "$fmt_prs"
	echo 'EOF'
	} >> $GITHUB_OUTPUT

	- name: Send notification to Slack
	if: ${{ steps.format_prs.outcome == 'success' }}
	uses: slackapi/slack-github-action@v2.0.0
	with:
	webhook: ${{ secrets.SLACK_WEBHOOK_URL }}
	webhook-type: incoming-webhook
	payload: \|
	blocks:
	- type: "section"
	text:
	type: "mrkdwn"
	text: "以下のプルリクエストが2日以上マージされていません:"
	- type: "section"
	text:
	type: "mrkdwn"
	text: "${{ steps.format_prs.outputs.fmt_prs }}"

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