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

{% block titletag %}Usage: {{ component_name }}{% endblock %}

{% block extra_css %}
<style>
    .registry-header {
        border-bottom: 0.3125rem solid #dcbd3d;
        background-color: #222 !important;
        padding: 1.25rem;
    }

    .registry-header h1 { color: white; margin: 0; }
    .registry-header strong { color: #dcbd3d; }
    .registry-header .breadcrumb { margin-bottom: 0.625rem; }

    .registry-header .breadcrumb a {
        color: #dcbd3d;
        text-decoration: none;
        font-weight: bold;
        font-size: 0.9rem;
    }

    .registry-header p { color: #ccc; margin-top: 0.3125rem; }

    .listing thead tr {
        border-bottom: 0.125rem solid #dcbd3d;
        background-color: #333;
    }

    .listing th { color: white !important; }

    .listing thead th.sortable {
        cursor: pointer;
        position: relative;
        transition: background-color 0.2s;
    }

    .listing thead th.sortable:hover { background-color: #444; }

    .listing thead th.sortable::after {
        content: '↕';
        font-size: 0.8rem;
        margin-left: 0.3125rem;
        opacity: 0.3;
    }

    .col-status { width: 7.5rem; }
    .col-actions { text-align: right; }
    .listing tbody tr { border-bottom: 0.0625rem solid #444; }
    .td-status { white-space: nowrap; vertical-align: middle; }

    .page-title { color: white; font-size: 1.1rem; display: block; }
    .page-type { color: #aaa; }

    .status-tag {
        color: #222222 !important;
        border-radius: 0;
        padding: 0.25rem 0.625rem;
        font-weight: bold;
        text-transform: uppercase;
        font-size: 0.7rem;
        display: inline-block;
        min-width: 4.0625rem;
        text-align: center;
        white-space: nowrap;
    }

    .status-tag--live { background-color: #8cf81f; }
    .status-tag--draft { background-color: #eeb300; }

    .url-code {
        color: white;
        background: #000;
        border: 0.0625rem solid #555;
        padding: 0.25rem 0.5rem;
    }

    .edit-button {
        background-color: #222222 !important;
        color: #ffffff !important;
        border: 0.0625rem solid #dcbd3d !important;
        border-radius: 0;
        transition: all 0.2s ease;
    }

    .edit-button:hover {
        background-color: #dcbd3d !important;
        color: #222222 !important;
    }

    .empty-state {
        text-align: center;
        padding: 3.75rem;
        color: white;
        background-color: #111;
    }

    .empty-state p { font-size: 1.2rem; }

    .registry-controls {
        display: flex;
        gap: 1rem;
        margin-bottom: 1.5rem;
        align-items: end;
    }

    .registry-controls {
        background: #333; border-left: 0.3125rem solid #dcbd3d; padding: 1rem;
    }
    .registry-controls div:first-of-type { flex: 1; }
    .registry-controls label { color: white; display: block; font-weight: bold; margin-bottom: 0.5rem; }
    .registry-controls input {
        background: #222; border: 0.0625rem solid #dcbd3d; box-sizing: border-box;
        color: white; min-height: 2.5rem; padding: 0.6rem; width: 100%;
    }
    .usage-table-actions { display: flex; justify-content: flex-end; margin-top: 1rem; }
    .copy-table-button { border-radius: 0; }

    [data-wagtail-theme="dark"] .listing tbody tr:hover {
        background-color: #333 !important;
    }
</style>
{% endblock %}

{% block content %}
  <header class="merged registry-header">
    <div class="left">
      <div class="breadcrumb">
        <a href="{% url 'dev_reference' %}">&larr; Back to System Registry</a>
      </div>
      <h1>Locations for: <strong>{{ component_name }}</strong></h1>
      <p>{{ page_obj.paginator.count }} location{{ page_obj.paginator.count|pluralize }} found</p>
    </div>
  </header>

  <div class="nice-padding">
    <form method="get" class="registry-controls" role="search">
      <input type="hidden" name="site" value="{{ site_filter }}">
      <div>
        <label for="usage-search">Search pages</label>
        <input id="usage-search" type="search" name="q" value="{{ search_query }}" placeholder="Filter by page title or slug...">
      </div>
      <div>
        <button type="submit" class="button">Search</button>
      </div>
    </form>
    <table class="listing" id="usage-table">
      <thead>
        <tr>
          <th class="sortable" onclick="sortTable(0)">Page Title</th>
          <th class="sortable col-status" onclick="sortTable(1)">Status</th>
          <th class="sortable" onclick="sortTable(2)">URL Path</th>
          <th class="col-actions">Action</th>
        </tr>
      </thead>
      <tbody id="usage-body">
        {% for page in pages %}
          <tr class="usage-row">
            <td>
              <strong class="page-title">{{ page.title }}</strong>
              <small class="page-type">Type: {{ page.get_verbose_name }}</small>
            </td>
            <td class="td-status" data-sort="{% if page.live %}1{% else %}0{% endif %}">
              <span class="status-tag status-tag--{% if page.live %}live{% else %}draft{% endif %}">
                {% if page.live %}Live{% else %}Draft{% endif %}
              </span>
            </td>
            <td><code class="url-code">{{ page.url|default:"/(no slug)/" }}</code></td>
            <td class="col-actions">
              <a href="{% url 'wagtailadmin_pages:edit' page.id %}" class="button button-small edit-button" target="_blank">Edit Page</a>
            </td>
          </tr>
        {% empty %}
          <tr>
            <td colspan="4" class="empty-state">
              <p>No pages found using this component.</p>
            </td>
          </tr>
        {% endfor %}
      </tbody>
    </table>
    <div class="usage-table-actions">
      <button id="copy-usage-table" type="button" class="button button-secondary copy-table-button">Copy displayed table</button>
    </div>
    {% if page_obj.paginator.num_pages > 1 %}
      <nav class="pagination" aria-label="Usage result pages">
        {% if page_obj.has_previous %}
          <a class="button" href="?site={{ site_filter|urlencode }}&amp;q={{ search_query|urlencode }}&amp;page={{ page_obj.previous_page_number }}">Previous</a>
        {% endif %}
        <span>Page {{ page_obj.number }} of {{ page_obj.paginator.num_pages }}</span>
        {% if page_obj.has_next %}
          <a class="button" href="?site={{ site_filter|urlencode }}&amp;q={{ search_query|urlencode }}&amp;page={{ page_obj.next_page_number }}">Next</a>
        {% endif %}
      </nav>
    {% endif %}
  </div>

  <script>
    let currentSortCol = -1;
    let sortAsc = true;

    function copyUsageTable() {
        const headers = ["Page Title", "Status", "URL Path"];
        const rows = Array.from(document.querySelectorAll("#usage-body .usage-row"));
        const values = rows.map(row => [0, 1, 2].map(index => row.cells[index].innerText.trim().replace(/\s+/g, " ")));
        const text = [headers, ...values].map(row => row.join("\t")).join("\n");
        const button = document.getElementById("copy-usage-table");
        navigator.clipboard.writeText(text).then(() => {
            button.textContent = "Copied";
            window.setTimeout(() => { button.textContent = "Copy displayed table"; }, 1500);
        });
    }

    function sortTable(colIdx) {
        const tbody = document.getElementById("usage-body");
        const rows = Array.from(tbody.querySelectorAll(".usage-row"));

        if (currentSortCol === colIdx) {
            sortAsc = !sortAsc;
        } else {
            sortAsc = true;
            currentSortCol = colIdx;
        }

        rows.sort((a, b) => {
            let valA, valB;
            if (colIdx === 1) {
                valA = parseInt(a.cells[colIdx].getAttribute('data-sort'));
                valB = parseInt(b.cells[colIdx].getAttribute('data-sort'));
                return sortAsc ? valA - valB : valB - valA;
            }
            valA = a.cells[colIdx].textContent.trim().toLowerCase();
            valB = b.cells[colIdx].textContent.trim().toLowerCase();
            return sortAsc ? valA.localeCompare(valB) : valB.localeCompare(valA);
        }).forEach(row => tbody.appendChild(row));
    }

    document.getElementById("copy-usage-table").addEventListener("click", copyUsageTable);
  </script>
{% endblock %}