name: Auto Close Old Issues (1y)

on:
  schedule:
    # Daily at 02:20 UTC
    - cron: '20 2 * * *'
  workflow_dispatch:

permissions:
  issues: write

jobs:
  close_old_issues:
    runs-on: ubuntu-latest
    steps:
      - name: Close issues older than 1 year
        uses: actions/github-script@v7
        with:
          script: |
            const owner = context.repo.owner;
            const repo = context.repo.repo;
            const now = new Date();
            const cutoff = new Date(now.getTime() - 365 * 24 * 60 * 60 * 1000);

            const closeComment = `该 Issue 已超过 1 年未活跃，为便于维护当前问题队列，先做关闭处理。\n\n如该问题在最新版本仍存在，欢迎直接 **Reopen** 本 Issue（或新建 Issue 并关联本单），并补充：\n1. 版本与部署方式\n2. 最小复现步骤\n3. 关键日志/截图（请脱敏）\n\n我们会优先跟进。`;

            let page = 1;
            let processed = 0;
            while (true) {
              const { data: issues } = await github.rest.issues.listForRepo({
                owner,
                repo,
                state: 'open',
                per_page: 100,
                page,
                sort: 'created',
                direction: 'asc'
              });

              if (!issues.length) break;

              for (const issue of issues) {
                // skip pull requests
                if (issue.pull_request) continue;

                const createdAt = new Date(issue.created_at);
                if (createdAt > cutoff) {
                  // list is sorted asc by created time; remaining items are newer
                  core.info('Reached issues newer than cutoff, stop scanning.');
                  return;
                }

                try {
                  await github.rest.issues.createComment({
                    owner,
                    repo,
                    issue_number: issue.number,
                    body: closeComment,
                  });

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

                  processed += 1;
                  core.info(`Closed #${issue.number}`);
                } catch (e) {
                  core.warning(`Failed to close #${issue.number}: ${e.message}`);
                }
              }

              page += 1;
            }

            core.info(`Done. Closed ${processed} old issues.`);