name: Close Inactive Issues

on:
  schedule:
    # run every day at midnight
    - cron: "0 0 * * *"
  workflow_dispatch:

permissions:
  issues: write
  pull-requests: write
  contents: read

jobs:
  close_inactive_issues:
    runs-on: ubuntu-latest
    steps:
      - name: Check inactive issues and close them
        uses: actions/github-script@v7
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          script: |
            const inactivePeriod = 7 * 24 * 60 * 60 * 1000; // 7 days
            const now = Date.now();

            // paginate through all open issues (listForRepo also returns PRs)
            const issues = await github.paginate(github.rest.issues.listForRepo, {
              owner: context.repo.owner,
              repo: context.repo.repo,
              state: 'open',
            });

            for (const issue of issues) {
              // skip pull requests (they are also returned by listForRepo)
              if (issue.pull_request) continue;

              // skip labeled issues
              if (issue.labels.length > 0) {
                console.log(`Skipping issue #${issue.number} (Has labels).`);
                continue;
              }

              // last activity time = the issue's own updated_at, which is
              // refreshed on comments, labels, etc. This avoids relying on
              // fetching comments and is accurate even when comments are edited.
              const lastActivityTime = new Date(issue.updated_at).getTime();

              // check inactivity
              if (now - lastActivityTime > inactivePeriod) {
                console.log(`Closing inactive issue: #${issue.number} (No activity for 7 days)`);

                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 for 7 days."
                });

                await github.rest.issues.update({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  issue_number: issue.number,
                  state: 'closed',
                });
              } else {
                console.log(`Skipping issue #${issue.number} (Active within 7 days).`);
              }
            }