name: Close stale issues

on:
  schedule:
    - cron: '0 3 * * *'
  workflow_dispatch:

jobs:
  close_stale_issues:
    runs-on: ubuntu-latest
    env:
      DEBUG_MODE: 'false'

    steps:
      - name: Fetch and list stale issues
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs');
            const issues = await github.paginate(
              github.rest.issues.listForRepo,
              {
                owner: context.repo.owner,
                repo: context.repo.repo,
                state: "open",
                per_page: 100,
              }
            );
            const now = new Date();
            const threshold = process.env.DEBUG_MODE === 'true'
              ? new Date(now.getTime() - 60 * 1000)
              : new Date(new Date(now).setMonth(now.getMonth() - 1));
            const stale = [];
            for (const issue of issues) {
              if (issue.pull_request) continue;
              const comments = await github.paginate(
                github.rest.issues.listComments,
                { owner: context.repo.owner, repo: context.repo.repo, issue_number: issue.number, per_page: 100 }
              );
              const lastDate = comments.length
                ? new Date(comments[comments.length - 1].created_at)
                : new Date(issue.updated_at);
              if (lastDate < threshold) {
                stale.push(`#${issue.number} - ${issue.title}`);
              }
            }
            const list = stale.join('\n') || 'No stale issues found.';
            fs.writeFileSync('stale_issues.txt', list);
            core.info(list);

      - name: Upload stale issue list
        uses: actions/upload-artifact@v4
        with:
          name: stale-issues
          path: stale_issues.txt

      - name: Close stale issues
        uses: actions/github-script@v7
        with:
          script: |
            const issues = await github.paginate(
              github.rest.issues.listForRepo,
              {
                owner: context.repo.owner,
                repo: context.repo.repo,
                state: "open",
                per_page: 100,
              }
            );
            const now = new Date();
            const threshold = process.env.DEBUG_MODE === 'true'
              ? new Date(now.getTime() - 60 * 1000)
              : new Date(new Date(now).setMonth(now.getMonth() - 1));
            const closed = [];
            for (const issue of issues) {
              if (issue.pull_request) continue;
              const comments = await github.paginate(
                github.rest.issues.listComments,
                { owner: context.repo.owner, repo: context.repo.repo, issue_number: issue.number, per_page: 100 }
              );
              const lastDate = comments.length
                ? new Date(comments[comments.length - 1].created_at)
                : new Date(issue.updated_at);
              if (lastDate < threshold) {
                core.info(`Closing issue #${issue.number} - ${issue.title}`);
                await github.rest.issues.createComment({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  issue_number: issue.number,
                  body: `This issue has been automatically closed as part of a cleanup process to help the team manage issues more effectively.\n\nIf the problem still persists, feel free to comment and we will gladly reopen it.`
                });
                await github.rest.issues.update({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  issue_number: issue.number,
                  state: "closed",
                });
                closed.push(`#${issue.number} - ${issue.title}`);
              }
            }
            core.info(closed.length ? `Closed ${closed.length} issue(s):\n${closed.join('\n')}` : 'No issues were closed.');