{% extends "../base.html" %}

{% block page_title %}Class Assessments{% endblock page_title %}

{% block content %}
<div class="row">
  <div class="col-md-12 col-sm-12">
    <div class="x_panel">
      <div class="x_title">
        <h2>Class Assessment Overview</h2>
        <ul class="nav navbar-right panel_toolbox">
          <li><a class="collapse-link"><i class="fa fa-chevron-up"></i></a></li>
        </ul>
        <div class="clearfix"></div>

        <!-- Breadcrumbs -->
        <nav aria-label="breadcrumb" class="mb-5">
          <ol class="breadcrumb" style="margin-bottom:6px;">
            <li class="breadcrumb-item"><a href="#">Results</a></li>
            <li class="breadcrumb-item active" aria-current="page">Class Assessments</li>
          </ol>
        </nav>
      </div>

      <div class="x_content">
        <!-- Page actions -->
          <div class="d-flex justify-content-between align-items-center mb-2">
            <div class="small text-muted">
              Use filters to narrow down classes by Academic Year and Term. Click a row to view assessments.
            </div>
            <div>
              {% if user.is_superuser and not is_teacher_role %}
                <a href="{% url 'assessment_create' %}" class="btn btn-success btn-sm">
                  <i class="fa fa-plus"></i> New Assessment
                </a>
              {% endif %}
            </div>
          </div>
<form method="get" class="form-horizontal form-label-left" id="filtersForm">
          <div class="row filter-toolbar sticky">
            <div class="col-md-4 col-sm-6 mb-10">
              <label for="year_id" class="small text-muted">Academic Year</label>
              <select id="year_id" name="year_id" class="form-control">
                <option value="">All Years</option>
                {% for y in academic_years %}
                  <option value="{{ y.id }}" {% if selected_year_id == y.id|stringformat:"s" %}selected{% endif %}>
                    {{ y.academic_year }}
                  </option>
                {% endfor %}
              </select>
            </div>

            <div class="col-md-3 col-sm-6 mb-10">
              <label for="term_id" class="small text-muted">Term</label>
              <select id="term_id" name="term_id" class="form-control">
                <option value="">All Terms</option>
                {% if terms %}
                  {% for t in terms %}
                    <option value="{{ t.id }}" {% if selected_term_id == t.id|stringformat:"s" %}selected{% endif %}>
                      {{ t.get_term_display }}
                    </option>
                  {% endfor %}
                {% else %}
                  <option disabled>No terms found</option>
                {% endif %}
              </select>
            </div>

            <div class="col-md-3 col-sm-6 mb-10 d-flex align-items-end">
              <button type="submit" class="btn btn-dark mr-2">
                <i class="fa fa-filter mr-1"></i> Apply
              </button>
              <a href="?" class="btn btn-default">Reset</a>
            </div>

            <div class="col-md-2 col-sm-6 mb-10 d-flex align-items-end justify-content-md-end">
              <span class="badge badge-secondary p-2">
                Showing {{ academic_classes|length|default:0 }} class{{ academic_classes|length|pluralize }}
              </span>
            </div>

            <!-- Quick chips: Terms -->
            <div class="col-md-12">
              <div class="chips-scroll">
                {% for t in terms %}
                  <a class="chip {% if selected_term_id == t.id|stringformat:"s" %}active{% endif %}"
                     href="?year_id={{ selected_year_id }}&term_id={{ t.id }}">
                    {{ t.get_term_display }}
                  </a>
                {% endfor %}
              </div>
            </div>

            <!-- Quick chips: Recent Years (top 5) -->
            <div class="col-md-12">
              <div class="chips-scroll">
                {% for y in academic_years|slice:":5" %}
                  <a class="chip chip-alt {% if selected_year_id == y.id|stringformat:"s" %}active{% endif %}"
                     href="?year_id={{ y.id }}{% if selected_term_id %}&term_id={{ selected_term_id }}{% endif %}">
                    {{ y.academic_year }}
                  </a>
                {% endfor %}
              </div>
            </div>
          </div>
        </form>

        {% if academic_classes %}
          <table class="table table-striped table-bordered datatable" style="width:100%">
            <thead>
              <tr>
                <th style="width:80px;">ID</th>
                <th>Class</th>
                <th>Academic Year</th>
                <th>Term</th>
                <th style="width:160px;">Actions</th>
              </tr>
            </thead>
            <tbody>
              {% for ac in academic_classes %}
                <tr class="row-link" data-href="{% url 'list_assessments' ac.id %}">
                  <td class="text-center">{{ ac.id }}</td>
                  <td>{{ ac.Class.name }}</td>
                  <td>{{ ac.academic_year.academic_year }}</td>
                  <td>{{ ac.term.get_term_display }}</td>
                  <td class="text-center">
                    <div class="btn-group btn-group-sm" role="group" aria-label="Actions">
                      <a href="{% url 'list_assessments' ac.id %}" class="btn btn-primary" title="View assessments">
                        <i class="fa fa-list-ul"></i> View
                      </a>
                    </div>
                  </td>
                </tr>
              {% endfor %}
            </tbody>
          </table>
        {% else %}
          <div class="empty-state">
            <div class="icon-wrap">
              <i class="fa fa-folder-open"></i>
            </div>
            <h4>No academic classes found</h4>
            <p class="text-muted">Try changing filters above. If you expect to see classes, contact the administrator to confirm allocations.</p>
            <a href="?" class="btn btn-outline-secondary btn-sm">Clear filters</a>
          </div>
        {% endif %}

      </div>
    </div>
  </div>
</div>

<style>
  .filter-toolbar .mb-10 { margin-bottom: 10px; }
  .filter-toolbar.sticky {
    position: sticky; top: 0; z-index: 2; background: #fff; padding-top: 8px; padding-bottom: 8px;
    border-bottom: 1px solid #f0f0f0;
  }
  .chips-scroll {
    display: flex; gap: 8px; overflow-x: auto; padding: 6px 0;
  }
  .chip {
    display: inline-block; padding: 6px 10px; border-radius: 16px; background: #f3f4f6; color: #374151;
    text-decoration: none; border: 1px solid #e5e7eb; white-space: nowrap; font-size: 12px;
  }
  .chip:hover { background: #e5e7eb; }
  .chip.active { background: #2c3e50; color: #fff; border-color: #2c3e50; }
  .chip-alt { background: #eef2ff; border-color: #e0e7ff; }
  .chip-alt.active { background: #6366f1; border-color: #6366f1; color: #fff; }

  .empty-state {
    background: #fff; border: 1px dashed #e5e7eb; border-radius: 12px;
    padding: 32px; text-align: center; color: #4b5563;
  }
  .empty-state .icon-wrap {
    width: 56px; height: 56px; border-radius: 50%;
    display: inline-flex; align-items: center; justify-content: center;
    background: #f3f4f6; color: #6b7280; font-size: 20px; margin-bottom: 8px;
  }

  .row-link { cursor: pointer; }
  .row-link:hover { background: #f8fafc; }
</style>

<script>
  (function() {
    var form = document.getElementById('filtersForm');
    ['year_id','term_id'].forEach(function(id){
      var el = document.getElementById(id);
      if (el) {
        el.addEventListener('change', function(){ form.submit(); });
      }
    });

    // Make table rows navigable (excluding clicks on actual buttons/links)
    document.querySelectorAll('tr.row-link').forEach(function(row) {
      row.addEventListener('click', function(e) {
        if (e.target.closest('a, button, .btn')) return;
        var href = row.getAttribute('data-href');
        if (href) window.location = href;
      });
    });
  })();
</script>
{% endblock content %}