{% extends "base.html" %}
{% block title %}Devices — Battery Tracker{% endblock %}

{% block content %}
<h1>Devices</h1>

<div class="card">
  <div style="display:flex;justify-content:flex-start;margin-bottom:0.5rem;">
    <a class="btn btn-primary btn-sm" href="{{ url_for('device_add') }}">+ Add Device</a>
  </div>
  <div id="device-filter-bar" style="display:flex;gap:0.5rem;flex-wrap:wrap;align-items:center;margin-bottom:0.75rem;">
    <select id="filter-type" onchange="applyDeviceFilters()"
            style="padding:0.25rem 0.5rem;font-size:0.85rem;border:1px solid #cbd5e1;border-radius:4px;">
      <option value="">All Types</option>
      {% for t in device_types|default([]) %}
      <option value="{{ t }}">{{ t }}</option>
      {% endfor %}
    </select>
    <select id="filter-location" onchange="applyDeviceFilters()"
            style="padding:0.25rem 0.5rem;font-size:0.85rem;border:1px solid #cbd5e1;border-radius:4px;">
      <option value="">All Locations</option>
      {% for loc in device_locations|default([]) %}
      <option value="{{ loc }}">{{ loc }}</option>
      {% endfor %}
    </select>
    <select id="filter-battery-size" onchange="applyDeviceFilters()"
            style="padding:0.25rem 0.5rem;font-size:0.85rem;border:1px solid #cbd5e1;border-radius:4px;">
      <option value="">Any Size</option>
      {% for sz in device_battery_sizes|default([]) %}
      <option value="{{ sz }}">{{ sz }}</option>
      {% endfor %}
    </select>
    <select id="filter-fill" onchange="applyDeviceFilters()"
            style="padding:0.25rem 0.5rem;font-size:0.85rem;border:1px solid #cbd5e1;border-radius:4px;">
      <option value="">Any Fill</option>
      <option value="empty">Empty</option>
      <option value="partial">Partial</option>
      <option value="full">Full</option>
    </select>
    <input type="text" id="filter-device-text" oninput="applyDeviceFilters()" placeholder="Search…"
           style="padding:0.25rem 0.5rem;font-size:0.85rem;border:1px solid #cbd5e1;border-radius:4px;width:140px;">
    <button type="button" onclick="resetDeviceFilters()" class="btn btn-sm btn-secondary"
            id="device-filter-reset" style="display:none;">✕ Reset</button>
    <span id="device-filter-count" style="font-size:0.8rem;color:#64748b;"></span>
  </div>

  <div class="table-wrap">
    <table class="responsive-table">
      <thead>
        <tr>
          <th>Name</th>
          <th>Type</th>
          <th>Size</th>
          <th>Location</th>
          <th>Slots</th>
          <th>Installed</th>
          <th>Brands</th>
          <th>Actions</th>
        </tr>
      </thead>
      <tbody>
        {% for d in devices %}
        {% set installed = d.effective_installed_count() %}
        {% set total_slots = d.effective_slots() %}
        {% if installed == 0 or total_slots == 0 %}{% set fill_state = 'empty' %}
        {% elif installed >= total_slots %}{% set fill_state = 'full' %}
        {% else %}{% set fill_state = 'partial' %}{% endif %}
        <tr data-type="{{ d.device_type or '' }}"
            data-battery-size="{{ d.battery_size or '' }}"
            data-location="{{ d.location or '' }}"
            data-fill="{{ fill_state }}"
            data-name="{{ d.name|lower }}">
          <td data-label="Device">
            <a href="{{ url_for('device_detail', device_id=d.id) }}"><strong>{{ d.name }}</strong></a>
          </td>
          <td data-label="Type">{{ d.device_type or '—' }}</td>
          <td data-label="Size">{{ d.battery_size or '—' }}</td>
          <td data-label="Location">{{ d.location or '—' }}</td>
          <td data-label="Slots">{{ total_slots }}</td>
          <td data-label="Installed">
            {{ installed }} / {{ total_slots }}
            {% if total_slots > 0 and installed >= total_slots %}
              <span class="badge badge-retired">Full</span>
            {% endif %}
          </td>
          <td data-label="Brands">
            {% set brands = d.installed_brands() %}
            {% if brands %}
              {{ brands|join(', ') }}
              {% if d.has_mixed_brands() %}
                <span class="badge badge-warning">⚠ mixed</span>
              {% endif %}
            {% else %}
              <span class="text-muted">—</span>
            {% endif %}
          </td>
          <td data-label="Actions" style="white-space:nowrap;">
            <a class="btn btn-sm btn-secondary" href="{{ url_for('device_detail', device_id=d.id) }}">View</a>
            {% if installed > 0 %}
            <form class="inline" method="post" action="{{ url_for('device_unassign_all', device_id=d.id) }}"
                  data-confirm="Unassign all batteries from {{ d.name }}?"
                  data-confirm-ok="Unassign" data-confirm-class="btn-warning">
              <button class="btn btn-sm btn-warning" type="submit">Unassign All</button>
            </form>
            {% endif %}
            <form class="inline" method="post" action="{{ url_for('device_delete', device_id=d.id) }}"
                  data-confirm="Delete {{ d.name }}? All installed batteries will be unassigned."
                  data-confirm-ok="Delete" data-confirm-class="btn-danger">
              <button class="btn btn-sm btn-danger" type="submit">Delete</button>
            </form>
          </td>
        </tr>
        {% for child in d.children %}
        {% set c_installed = child.installed_count() %}
        {% if c_installed == 0 or child.battery_slots == 0 %}{% set c_fill = 'empty' %}
        {% elif c_installed >= child.battery_slots %}{% set c_fill = 'full' %}
        {% else %}{% set c_fill = 'partial' %}{% endif %}
        <tr data-type="{{ d.device_type or '' }}"
            data-battery-size="{{ child.battery_size or '' }}"
            data-location="{{ d.location or '' }}"
            data-fill="{{ c_fill }}"
            data-name="{{ d.name|lower }} {{ child.name|lower }}">
          <td data-label="Device" style="padding-left:1.75rem;">
            <span class="text-muted">↳</span>
            <a href="{{ url_for('device_detail', device_id=child.id) }}">{{ child.name }}</a>
          </td>
          <td data-label="Type" class="text-muted">{{ d.device_type or '—' }}</td>
          <td data-label="Size">{{ child.battery_size or '—' }}</td>
          <td data-label="Location" class="text-muted">{{ d.location or '—' }}</td>
          <td data-label="Slots">{{ child.battery_slots }}</td>
          <td data-label="Installed">
            {{ c_installed }} / {{ child.battery_slots }}
            {% if child.battery_slots > 0 and c_installed >= child.battery_slots %}
              <span class="badge badge-retired">Full</span>
            {% endif %}
          </td>
          <td data-label="Brands">
            {% set c_brands = child.installed_brands() %}
            {% if c_brands %}
              {{ c_brands|join(', ') }}
              {% if child.has_mixed_brands() %}
                <span class="badge badge-warning">⚠ mixed</span>
              {% endif %}
            {% else %}
              <span class="text-muted">—</span>
            {% endif %}
          </td>
          <td data-label="Actions" style="white-space:nowrap;">
            <a class="btn btn-sm btn-secondary" href="{{ url_for('device_detail', device_id=child.id) }}">View</a>
          </td>
        </tr>
        {% endfor %}
        {% else %}
        <tr><td colspan="8" class="text-muted" style="text-align:center;padding:1rem;">No devices yet. <a href="{{ url_for('device_add') }}">Add one.</a></td></tr>
        {% endfor %}
      </tbody>
    </table>
  </div>
  <div id="dev-pagination-bar" style="display:flex;align-items:center;gap:0.75rem;margin-top:0.75rem;flex-wrap:wrap;">
    <button id="dev-prev-page" class="btn btn-sm btn-secondary" type="button"
            onclick="devCurrentPage--; applyDevicePagination();" disabled>&#8592; Prev</button>
    <span id="dev-page-info" style="color:var(--text-muted);font-size:0.9rem;"></span>
    <button id="dev-next-page" class="btn btn-sm btn-secondary" type="button"
            onclick="devCurrentPage++; applyDevicePagination();" disabled>Next &#8594;</button>
    <select id="dev-page-size-select" onchange="DEV_PAGE_SIZE=+this.value||Infinity;devCurrentPage=1;applyDevicePagination();"
            style="padding:0.2rem 0.4rem;font-size:0.85rem;border:1px solid #cbd5e1;border-radius:4px;">
      <option value="10">10 / page</option>
      <option value="25" selected>25 / page</option>
      <option value="50">50 / page</option>
      <option value="100">100 / page</option>
      <option value="">All</option>
    </select>
  </div>
</div>

<a class="btn btn-primary" href="{{ url_for('device_add') }}">+ Add Device</a>

<script>
var DEV_PAGE_SIZE = 25;
var devCurrentPage = 1;

function applyDeviceFilters() {
  var typeVal        = document.getElementById('filter-type').value;
  var batterySizeVal = document.getElementById('filter-battery-size').value;
  var locationVal    = document.getElementById('filter-location').value;
  var fillVal        = document.getElementById('filter-fill').value;
  var textVal        = document.getElementById('filter-device-text').value.toLowerCase();
  var rows           = document.querySelectorAll('tbody tr[data-name]');
  var filtered       = 0;
  rows.forEach(function(row) {
    var rowType        = row.dataset.type        || '';
    var rowBatterySize = row.dataset.batterySize || '';
    var rowLocation    = row.dataset.location    || '';
    var rowFill        = row.dataset.fill        || '';
    var rowName        = row.dataset.name        || '';
    var show = (!typeVal        || rowType === typeVal) &&
               (!batterySizeVal || rowBatterySize === batterySizeVal) &&
               (!locationVal    || rowLocation === locationVal) &&
               (!fillVal        || rowFill === fillVal) &&
               (!textVal        || rowName.includes(textVal) ||
                                   rowType.toLowerCase().includes(textVal) ||
                                   rowBatterySize.toLowerCase().includes(textVal) ||
                                   rowLocation.toLowerCase().includes(textVal));
    row.dataset.filteredOut = show ? '' : '1';
    if (show) filtered++;
  });
  var active = typeVal || batterySizeVal || locationVal || fillVal || textVal;
  document.getElementById('device-filter-reset').style.display = active ? '' : 'none';
  document.getElementById('device-filter-count').textContent =
    active ? (filtered + ' of ' + rows.length + ' shown') : '';
  devCurrentPage = 1;
  applyDevicePagination();
}

function applyDevicePagination() {
  var allRows = Array.from(document.querySelectorAll('tbody tr[data-name]'));
  var visible = allRows.filter(function(r) { return !r.dataset.filteredOut; });
  var totalPages = Math.max(1, Math.ceil(visible.length / DEV_PAGE_SIZE));
  if (devCurrentPage > totalPages) devCurrentPage = totalPages;
  var start = (devCurrentPage - 1) * DEV_PAGE_SIZE;

  allRows.forEach(function(r) { r.style.display = 'none'; });
  visible.slice(start, start + DEV_PAGE_SIZE).forEach(function(r) { r.style.display = ''; });

  var info = document.getElementById('dev-page-info');
  var prev = document.getElementById('dev-prev-page');
  var next = document.getElementById('dev-next-page');
  if (info) info.textContent = visible.length > DEV_PAGE_SIZE
    ? 'Page ' + devCurrentPage + ' of ' + totalPages : '';
  if (prev) prev.disabled = devCurrentPage <= 1;
  if (next) next.disabled = devCurrentPage >= totalPages;
}

function resetDeviceFilters() {
  document.getElementById('filter-type').value = '';
  document.getElementById('filter-battery-size').value = '';
  document.getElementById('filter-location').value = '';
  document.getElementById('filter-fill').value = '';
  document.getElementById('filter-device-text').value = '';
  applyDeviceFilters();
}

applyDeviceFilters();
</script>
{% endblock %}