name: Close Stale Issues and PRs

on:
  schedule:
    - cron: '0 0 * * *'  # Runs daily at midnight UTC
  workflow_dispatch:       # Allow manual triggering

jobs:
  close-stale:
    runs-on: ubuntu-latest
    permissions:
      issues: write
      pull-requests: write

    steps:
      - name: Close stale issues
        uses: actions/github-script@v7
        with:
          script: |
            const threeMonthsAgo = new Date();
            threeMonthsAgo.setMonth(threeMonthsAgo.getMonth() - 3);

            let closedIssues = 0;
            let closedPRs = 0;

            // --- Close stale issues ---
            const issueIterator = github.paginate.iterator(
              github.rest.issues.listForRepo,
              {
                owner: context.repo.owner,
                repo: context.repo.repo,
                state: 'open',
                per_page: 100,
              }
            );

            for await (const { data: items } of issueIterator) {
              for (const issue of items) {
                // Skip pull requests (issues API returns both)
                if (issue.pull_request) continue;

                if (new Date(issue.updated_at) < threeMonthsAgo) {
                  console.log(`Closing issue #${issue.number}: "${issue.title}" (last activity: ${issue.updated_at})`);

                  await github.rest.issues.createComment({
                    owner: context.repo.owner,
                    repo: context.repo.repo,
                    issue_number: issue.number,
                    body: `This issue has been automatically closed due to inactivity. It has had no activity for 3 months.\n\nIf this issue is still relevant, please feel free to reopen it with updated information or context. We apologize for any inconvenience.`,
                  });

                  await github.rest.issues.update({
                    owner: context.repo.owner,
                    repo: context.repo.repo,
                    issue_number: issue.number,
                    state: 'closed',
                    state_reason: 'not_planned',
                  });

                  closedIssues++;
                }
              }
            }

            // --- Close stale pull requests ---
            const prIterator = github.paginate.iterator(
              github.rest.pulls.list,
              {
                owner: context.repo.owner,
                repo: context.repo.repo,
                state: 'open',
                per_page: 100,
              }
            );

            for await (const { data: prs } of prIterator) {
              for (const pr of prs) {
                if (new Date(pr.updated_at) < threeMonthsAgo) {
                  console.log(`Closing PR #${pr.number}: "${pr.title}" (last activity: ${pr.updated_at})`);

                  await github.rest.issues.createComment({
                    owner: context.repo.owner,
                    repo: context.repo.repo,
                    issue_number: pr.number,
                    body: `This pull request has been automatically closed due to inactivity. It has had no activity for 3 months.\n\nIf this PR is still relevant, please feel free to reopen it with updated information or context. We apologize for any inconvenience.`,
                  });

                  await github.rest.pulls.update({
                    owner: context.repo.owner,
                    repo: context.repo.repo,
                    pull_number: pr.number,
                    state: 'closed',
                  });

                  closedPRs++;
                }
              }
            }

            console.log(`Closed ${closedIssues} stale issue(s) and ${closedPRs} stale PR(s).`);