{% extends 'base.html' %}
{% block content %}
<div class="d-flex justify-content-between align-items-center">
    <h3><i class="fas fa-file-alt"></i> Reference Papers</h3>
    <form action="{{ url_for('admin.reindex_reference_papers') }}" method="POST">
        <button type="submit" class="btn btn-primary"><i class="fas fa-sync"></i> Re-index Papers</button>
    </form>
</div>
<p class="text-muted mt-2">
    Real revision/past papers used to guide AI exam generation. Drop new PDF or DOCX files into
    <code>{{ papers_dir }}</code> and click Re-index. Excerpts from the best-matching papers are
    injected into every generation prompt so exams follow their structure and standard.
</p>
<div class="card mt-3">
    <div class="card-header"><strong>{{ summary.papers|length }}</strong> indexed papers</div>
    <div class="card-body">
        <table class="table table-sm table-striped">
            <thead><tr><th>File</th><th>Subject</th><th>Grade</th><th>Type</th><th>Text size</th></tr></thead>
            <tbody>
            {% for p in summary.papers %}
                <tr>
                    <td>{{ p.file }}</td>
                    <td>{{ p.subject }}</td>
                    <td>{{ p.grade if p.grade else '—' }}</td>
                    <td><span class="badge bg-{{ 'success' if p.doc_type == 'question_paper' else ('info' if p.doc_type in ('marking_scheme', 'paper_with_answers') else 'secondary') }}">{{ p.doc_type.replace('_', ' ') }}</span></td>
                    <td>{{ '{:,}'.format(p.chars) }} chars</td>
                </tr>
            {% else %}
                <tr><td colspan="5" class="text-muted">No papers indexed yet. Add files to the folder above and re-index.</td></tr>
            {% endfor %}
            </tbody>
        </table>
    </div>
</div>
{% if summary.errors %}
<div class="card mt-3 border-warning">
    <div class="card-header text-warning"><i class="fas fa-exclamation-triangle"></i> Skipped files</div>
    <div class="card-body">
        <ul class="mb-0">
        {% for e in summary.errors %}
            <li><code>{{ e.file }}</code> — {{ e.error }}</li>
        {% endfor %}
        </ul>
    </div>
</div>
{% endif %}
{% endblock %}