new workflow: close stale prs after 60 days

.github/workflows/close-stale-draft-prs.yaml

@@ -0,0 +1,18 @@
+name: 'Mark Stale/Close Inactive Draft PRs'
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 6 * * MON'
+
+permissions:
+  issues: write
+  pull-requests: write
+
+jobs:
+  stale-draft-prs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Process stale draft PRs
+        run: ./scripts/close-stale-draft-prs.sh -o "${{ github.repository_owner }}" -r "${{ github.event.repository.name }}" -t "${{ secrets.GITHUB_TOKEN }}"
+

scripts/close-stale-draft-prs.sh

@@ -0,0 +1,132 @@
+#!/usr/bin/env bash
+# Copyright IBM Corp. 2014, 2025
+# SPDX-License-Identifier: MPL-2.0
+
+# shellcheck disable=SC2086
+
+# as the normal stale bot does not work for draft PRs, we need to do it manually until this pr is merged https://github.com/actions/stale/pull/1314
+
+set -euo pipefail
+
+DRY_RUN=false
+
+while getopts o:r:t:d flag
+do
+  case "${flag}" in
+    o) owner=${OPTARG};;
+    r) repo=${OPTARG};;
+    t) token=${OPTARG};;
+    d) DRY_RUN=true;;
+    *) echo "Usage: $0 -o owner -r repo [-t token] [-d]"; exit 1;;
+  esac
+done
+
+# Use token from env if not provided via flag
+token="${token:-${GH_TOKEN:-${GITHUB_TOKEN:-}}}"
+if [[ -z "$token" ]]; then
+  echo "Error: No token provided. Use -t flag or set GH_TOKEN/GITHUB_TOKEN env var."
+  exit 1
+fi
+
+API_BASE="https://api.github.com/repos/${owner}/${repo}"
+# Handle both GNU date (Linux) and BSD date (macOS)
+SIXTY_DAYS_AGO=$(date -u -d "60 days ago" +%Y-%m-%dT%H:%M:%SZ 2>/dev/null || date -u -v-60d +%Y-%m-%dT%H:%M:%SZ)
+
+echo "=== Close Inactive Draft PRs ==="
+echo "Repository: ${owner}/${repo}"
+echo "Close threshold: 60 days (before ${SIXTY_DAYS_AGO})"
+if [[ "$DRY_RUN" == "true" ]]; then
+  echo "Mode: DRY RUN (no changes will be made)"
+else
+  echo "Mode: LIVE"
+fi
+echo ""
+
+# Collect all open PRs
+echo "Fetching open PRs..."
+all_prs=()
+page=1
+while :; do
+  prs_json=$(curl -s -L \
+    -H "Accept: application/vnd.github+json" \
+    -H "Authorization: Bearer $token" \
+    -H "X-GitHub-Api-Version: 2022-11-28" \
+    "${API_BASE}/pulls?state=open&per_page=100&page=${page}")
+
+  count=$(echo "$prs_json" | jq length)
+  if [[ "$count" -eq 0 ]]; then
+    break
+  fi
+
+  while IFS= read -r pr; do
+    all_prs+=("$pr")
+  done < <(echo "$prs_json" | jq -c '.[]')
+
+  page=$((page + 1))
+done
+
+total_prs=${#all_prs[@]}
+echo "Found ${total_prs} open PR(s)"
+echo ""
+
+# Process each PR
+drafts_found=0
+close_count=0
+
+for pr in "${all_prs[@]}"; do
+  draft=$(echo "$pr" | jq -r '.draft')
+
+  # Skip non-draft PRs silently
+  if [[ "$draft" != "true" ]]; then
+    continue
+  fi
+
+  pr_number=$(echo "$pr" | jq -r '.number')
+  pr_title=$(echo "$pr" | jq -r '.title')
+  updated_at=$(echo "$pr" | jq -r '.updated_at')
+  labels=$(echo "$pr" | jq -r '.labels[].name' 2>/dev/null || echo "")
+
+  drafts_found=$((drafts_found + 1))
+  echo "Draft PR #${pr_number} \"${pr_title}\" (updated: ${updated_at})"
+
+  # Check for keep-draft label
+  if echo "$labels" | grep -q "^keep-draft$"; then
+    echo "  ↳ Has 'keep-draft' label, skipping"
+    continue
+  fi
+
+  # Close if 60+ days inactive
+  if [[ "$updated_at" < "$SIXTY_DAYS_AGO" ]]; then
+    close_count=$((close_count + 1))
+    echo "  ↳ Inactive for 60+ days → CLOSING"
+
+    if [[ "$DRY_RUN" == "false" ]]; then
+      curl -s -L -X PATCH \
+        -H "Accept: application/vnd.github+json" \
+        -H "Authorization: Bearer $token" \
+        -H "X-GitHub-Api-Version: 2022-11-28" \
+        "${API_BASE}/pulls/${pr_number}" \
+        -d '{"state":"closed"}' > /dev/null
+
+      curl -s -L -X POST \
+        -H "Accept: application/vnd.github+json" \
+        -H "Authorization: Bearer $token" \
+        -H "X-GitHub-Api-Version: 2022-11-28" \
+        "${API_BASE}/issues/${pr_number}/comments" \
+        -d '{"body":"I'\''m going to close this draft pull request because it has been inactive for _60 days_ ⏳. This helps our maintainers find and focus on the active contributions.\n\nIf you would like to continue working on this, please reopen the pull request and mark it as ready for review when complete. Thank you!"}' > /dev/null
+      echo "  ↳ Closed and commented"
+    else
+      echo "  ↳ (dry run - would close and comment)"
+    fi
+  fi
+done
+
+echo ""
+echo "=== Summary ==="
+echo "Total PRs checked: ${total_prs}"
+echo "Draft PRs found: ${drafts_found}"
+echo "Closed: ${close_count}"
+if [[ "$DRY_RUN" == "true" ]]; then
+  echo "(dry run - no actual changes made)"
+fi
+echo "Done."