{% extends 'django_forms_workflows/base.html' %}

{% block title %}Approval Inbox - {{ site_name }}{% endblock %}

{% block extra_css %}
<link rel="stylesheet" href="https://cdn.datatables.net/1.13.6/css/dataTables.bootstrap5.min.css">
<style>
  /* Improve pagination styling */
  .dataTables_wrapper .dataTables_paginate {
    margin-top: 0 !important;
  }

  .dataTables_wrapper .dataTables_paginate .pagination {
    margin-bottom: 0;
  }

  .dataTables_wrapper .dataTables_info {
    padding-top: 0;
  }

  /* Clean up table controls */
  .dataTables_wrapper .row {
    margin-left: 0;
    margin-right: 0;
  }

  /* Style the page length selector */
  .form-select-sm {
    border-color: #dee2e6;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
  }

  .form-select-sm:focus {
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
  }

  /* Improve search input styling */
  #searchContainer .input-group-text {
    border-right: 0;
  }

  #searchContainer input {
    border-left: 0;
  }

  #searchContainer input:focus {
    border-color: #dee2e6;
    box-shadow: none;
  }

  #searchContainer .input-group:focus-within .input-group-text {
    border-color: #86b7fe;
  }

  #searchContainer .input-group:focus-within input {
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
  }
</style>
{% endblock %}

{% block content %}
<div class="row">
  <div class="col-12">

    {# ── Page header ── #}
    <div class="d-flex align-items-center justify-content-between mb-3">
      <h1 class="mb-0"><i class="bi bi-inbox"></i> Approvals</h1>
    </div>

    {# ── Tab navigation ── #}
    <ul class="nav nav-tabs mb-3">
      <li class="nav-item">
        <a class="nav-link active" href="{% url 'forms_workflows:approval_inbox' %}">
          <i class="bi bi-hourglass-split me-1"></i>Pending
          <span class="badge bg-primary ms-1">{{ total_tasks_count }}</span>
        </a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="{% url 'forms_workflows:completed_approvals' %}">
          <i class="bi bi-archive me-1"></i>Completed Forms
          <span class="badge bg-secondary ms-1">{{ completed_count }}</span>
        </a>
      </li>
    </ul>

    <div class="d-flex align-items-center justify-content-end mb-3">
      <span class="text-muted small">
        {% if active_form %}
          Showing {{ tasks|length }} task{{ tasks|length|pluralize }} in
          <strong>{{ active_category.name }}</strong> &rsaquo; <strong>{{ active_form.name }}</strong>
          &mdash;
          <a href="?category={{ category_slug }}" class="text-decoration-none">clear form filter</a>
        {% elif active_category %}
          Showing {{ tasks|length }} task{{ tasks|length|pluralize }} in
          <strong>{{ active_category.name }}</strong>
          &mdash;
          <a href="?" class="text-decoration-none">clear filter</a>
        {% else %}
          {{ total_tasks_count }} pending task{{ total_tasks_count|pluralize }} total
        {% endif %}
      </span>
    </div>

    {# ── Category filter bar ── #}
    {% if category_counts %}
    <div class="mb-3 d-flex align-items-center justify-content-between" role="toolbar" aria-label="Filter by category">
      <div class="d-flex flex-wrap gap-2 align-items-center">
        <span class="text-muted small fw-semibold me-1">Filter:</span>

        <a href="?"
           class="btn btn-sm {% if not category_slug %}btn-primary{% else %}btn-outline-secondary{% endif %}"
           {% if not category_slug %}aria-current="true"{% endif %}>
          All
          <span class="badge {% if not category_slug %}bg-light text-dark{% else %}bg-secondary{% endif %} ms-1">
            {{ total_tasks_count }}
          </span>
        </a>

        {% for cat in category_counts %}
        <a href="?category={{ cat.slug }}"
           class="btn btn-sm {% if category_slug == cat.slug %}btn-primary{% else %}btn-outline-secondary{% endif %}"
           {% if category_slug == cat.slug %}aria-current="true"{% endif %}>
          {% if cat.icon %}<i class="bi {{ cat.icon }} me-1"></i>{% endif %}
          {{ cat.name }}
          <span class="badge {% if category_slug == cat.slug %}bg-light text-dark{% else %}bg-secondary{% endif %} ms-1">
            {{ cat.count }}
          </span>
        </a>
        {% endfor %}
      </div>
      {% if not form_counts %}<div id="searchContainer"></div>{% endif %}
    </div>
    {% endif %}

    {# ── Form filter bar with search (only when a category is active) ── #}
    {% if form_counts %}
    <div class="mb-3 d-flex flex-wrap gap-2 align-items-center justify-content-between ps-3 border-start border-2"
         role="toolbar" aria-label="Filter by form">
      <div class="d-flex flex-wrap gap-2 align-items-center">
        <span class="text-muted small fw-semibold me-1">Form:</span>

        <a href="?category={{ category_slug }}"
           class="btn btn-sm {% if not form_slug %}btn-primary{% else %}btn-outline-secondary{% endif %}"
           {% if not form_slug %}aria-current="true"{% endif %}>
          All
        </a>

        {% for form_item in form_counts %}
        <a href="?category={{ category_slug }}&form={{ form_item.slug }}"
           class="btn btn-sm {% if form_slug == form_item.slug %}btn-primary{% else %}btn-outline-secondary{% endif %}"
           {% if form_slug == form_item.slug %}aria-current="true"{% endif %}>
          {{ form_item.name }}
          <span class="badge {% if form_slug == form_item.slug %}bg-light text-dark{% else %}bg-secondary{% endif %} ms-1">
            {{ form_item.count }}
          </span>
        </a>
        {% endfor %}
      </div>
      <div id="searchContainer"></div>
    </div>
    {% elif not category_counts %}
    {# ── Search bar when no filters exist at all ── #}
    <div class="mb-3 d-flex justify-content-end">
      <div id="searchContainer"></div>
    </div>
    {% endif %}

    {# ── Task table ── #}
    {% if tasks %}
      <div class="table-responsive">
        <table class="table table-hover" id="approvalsTable">
          <thead>
            <tr>
              {% if not category_slug %}<th>Category</th>{% endif %}
              <th>Form</th>
              <th>Submitter</th>
              <th>Step</th>
              <th>Submitted</th>
              <th>Actions</th>
            </tr>
          </thead>
          <tbody>
            {% for task in tasks %}
            <tr>
              {% if not category_slug %}
              <td>
                {% with cat=task.submission.form_definition.category %}
                {% if cat %}
                  {% if cat.icon %}<i class="bi {{ cat.icon }} me-1 text-muted"></i>{% endif %}
                  {{ cat.name }}
                {% else %}
                  <span class="text-muted">—</span>
                {% endif %}
                {% endwith %}
              </td>
              {% endif %}
              <td>{{ task.submission.form_definition.name }}</td>
              <td>{{ task.submission.submitter.get_full_name|default:task.submission.submitter.username }}</td>
              <td>{{ task.step_name }}</td>
              <td>{{ task.submission.submitted_at|date:"Y-m-d H:i" }}</td>
              <td>
                <a href="{% url 'forms_workflows:approve_submission' task.id %}" class="btn btn-sm btn-primary">
                  <i class="bi bi-check-circle"></i> Review
                </a>
                <a href="{% url 'forms_workflows:submission_detail' task.submission.id %}" class="btn btn-sm btn-outline-secondary">
                  <i class="bi bi-eye"></i> View
                </a>
              </td>
            </tr>
            {% endfor %}
          </tbody>
        </table>
      </div>
    {% else %}
      <div class="alert alert-info">
        <i class="bi bi-info-circle"></i>
        {% if active_form %}
          No pending approvals for <strong>{{ active_form.name }}</strong> in <strong>{{ active_category.name }}</strong>.
        {% elif active_category %}
          No pending approvals in <strong>{{ active_category.name }}</strong>.
        {% else %}
          You have no pending approvals at this time.
        {% endif %}
      </div>
    {% endif %}

  </div>
</div>
{% endblock %}

{% block extra_js %}
<script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
<script src="https://cdn.datatables.net/1.13.6/js/jquery.dataTables.min.js"></script>
<script src="https://cdn.datatables.net/1.13.6/js/dataTables.bootstrap5.min.js"></script>
<script>
$(document).ready(function() {
    if ($('#approvalsTable').length) {
        var table = $('#approvalsTable').DataTable({
            order: [[{% if not category_slug %}4{% else %}3{% endif %}, 'desc']],
            columnDefs: [{ orderable: false, targets: -1 }],
            pageLength: 25,
            dom: '<"row"<"col-sm-12"tr>><"row mt-3"<"col-sm-12 col-md-5"i><"col-sm-12 col-md-7"p>>',
            language: {
                search: '',
                searchPlaceholder: 'Search approvals...',
                emptyTable: 'No pending approvals found.',
                zeroRecords: 'No matching approvals found.',
                info: 'Showing _START_ to _END_ of _TOTAL_ approvals',
                infoEmpty: 'Showing 0 to 0 of 0 approvals',
                infoFiltered: '(filtered from _MAX_ total approvals)',
                paginate: {
                    first: '&laquo;',
                    last: '&raquo;',
                    next: '&rsaquo;',
                    previous: '&lsaquo;'
                }
            }
        });

        // Move search box to the filter row
        var searchBox = $('<div class="input-group input-group-sm" style="max-width: 300px;">' +
            '<span class="input-group-text bg-white"><i class="bi bi-search"></i></span>' +
            '<input type="search" class="form-control form-control-sm" placeholder="Search approvals..." aria-label="Search">' +
            '</div>');

        searchBox.find('input').on('keyup change', function() {
            table.search(this.value).draw();
        });

        $('#searchContainer').append(searchBox);

        // Add page length selector to bottom with improved styling
        var lengthSelect = $('<div class="d-flex align-items-center gap-2 mb-2">' +
            '<label class="mb-0 text-muted small">Show:</label>' +
            '<select class="form-select form-select-sm" style="width: auto;">' +
            '<option value="10">10</option>' +
            '<option value="25" selected>25</option>' +
            '<option value="50">50</option>' +
            '<option value="100">100</option>' +
            '<option value="-1">All</option>' +
            '</select>' +
            '<span class="text-muted small">entries</span>' +
            '</div>');

        lengthSelect.find('select').on('change', function() {
            table.page.len($(this).val()).draw();
        });

        $('.dataTables_info').parent().prepend(lengthSelect);
    }
});
</script>
{% endblock %}