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

{% block content %}
{% if device.parent %}
<div style="margin-bottom:0.5rem;font-size:0.9rem;">
  <a href="{{ url_for('device_detail', device_id=device.parent.id) }}">&larr; {{ device.parent.name }}</a>
  <span class="text-muted"> / {{ device.name }}</span>
</div>
{% endif %}
<h1>{{ device.name }}</h1>

<div class="card" style="position:relative;">
{% if ha_enabled and device.ha_entity_id and ha_live_pct is not none %}
{% set _pct = ha_live_pct %}
{% set _fill = ((_pct / 100) * 48) | int %}
{% if _pct < 20 %}{% set _color = '#ef4444' %}
{% elif _pct < 60 %}{% set _color = '#f59e0b' %}
{% else %}{% set _color = '#22c55e' %}{% endif %}
<div title="HA battery: {{ _pct }}%"
     style="position:absolute;top:1rem;right:1rem;display:flex;flex-direction:column;align-items:center;gap:0.2rem;opacity:0.9;">
  <svg width="54" height="26" viewBox="0 0 60 28" xmlns="http://www.w3.org/2000/svg">
    <rect x="1" y="4" width="52" height="20" rx="3" ry="3"
          fill="none" stroke="var(--text-muted)" stroke-width="2"/>
    <rect x="54" y="10" width="5" height="8" rx="1.5"
          fill="var(--text-muted)"/>
    {% if _fill > 0 %}
    <rect x="3" y="6" width="{{ _fill }}" height="16" rx="2"
          fill="{{ _color }}"/>
    {% endif %}
    <text x="27" y="19" text-anchor="middle"
          font-size="10" font-weight="600" fill="#fff"
          style="text-shadow:0 0 3px rgba(0,0,0,0.6);">{{ _pct }}%</text>
  </svg>
</div>
{% endif %}
  <table style="width:auto;border:none;">
    <tr>
      <td style="padding:0.3rem 1rem 0.3rem 0;font-weight:600;color:#64748b;border:none;">Slots</td>
      <td style="border:none;">{{ device.installed_count() }} / {{ device.battery_slots }} used</td>
    </tr>
    {% if device.device_type %}
    <tr>
      <td style="padding:0.3rem 1rem 0.3rem 0;font-weight:600;color:#64748b;border:none;">Type</td>
      <td style="border:none;">{{ device.device_type }}</td>
    </tr>
    {% endif %}
    {% if device.battery_size %}
    <tr>
      <td style="padding:0.3rem 1rem 0.3rem 0;font-weight:600;color:#64748b;border:none;">Battery Size</td>
      <td style="border:none;">{{ device.battery_size }}</td>
    </tr>
    {% endif %}
    {% if device.has_mixed_brands() %}
    <tr>
      <td style="padding:0.3rem 1rem 0.3rem 0;font-weight:600;color:#64748b;border:none;">Warning</td>
      <td style="border:none;"><span class="badge badge-warning">⚠ Mixed brands installed</span></td>
    </tr>
    {% endif %}
    {% if device.location %}
    <tr>
      <td style="padding:0.3rem 1rem 0.3rem 0;font-weight:600;color:#64748b;border:none;">Location</td>
      <td style="border:none;">{{ device.location }}</td>
    </tr>
    {% endif %}
    {% if device.notes %}
    <tr>
      <td style="padding:0.3rem 1rem 0.3rem 0;font-weight:600;color:#64748b;border:none;">Notes</td>
      <td style="border:none;">{{ device.notes }}</td>
    </tr>
    {% endif %}
    {% if device.parent %}
    <tr>
      <td style="padding:0.3rem 1rem 0.3rem 0;font-weight:600;color:#64748b;border:none;">Part of</td>
      <td style="border:none;"><a href="{{ url_for('device_detail', device_id=device.parent.id) }}">{{ device.parent.name }}</a></td>
    </tr>
    {% endif %}
    {% if ha_enabled and device.ha_entity_id %}
    <tr>
      <td style="padding:0.3rem 1rem 0.3rem 0;font-weight:600;color:#64748b;border:none;">HA Live %</td>
      <td style="border:none;">
        {% if ha_live_pct is not none %}
          {% if ha_live_pct < 20 %}
            <span class="badge badge-warning">⚠ {{ ha_live_pct }}%</span>
          {% else %}
            {{ ha_live_pct }}%
          {% endif %}
        {% else %}
          <span class="text-muted">—</span>
        {% endif %}
      </td>
    </tr>
    {% endif %}
  </table>
</div>

{% if device.children or not device.is_subcomponent() %}
<div class="card">
  {% if device.children %}
  <h2>Sub-components</h2>
  <div style="display:flex;gap:0.75rem;flex-wrap:wrap;margin-bottom:0.75rem;">
    {% for child in device.children %}
    <a href="{{ url_for('device_detail', device_id=child.id) }}"
       style="display:block;padding:0.6rem 0.9rem;border:1px solid var(--border);border-radius:6px;text-decoration:none;min-width:140px;background:var(--bg-card);">
      <strong>{{ child.name }}</strong><br>
      <small class="text-muted">{{ child.installed_count() }}/{{ child.battery_slots }} slots &middot; {{ child.battery_size }}{% if child.ha_entity_id %} &middot; HA{% endif %}</small>
    </a>
    {% endfor %}
  </div>
  {% else %}
  <h2>Sub-components</h2>
  <p class="text-muted" style="margin-bottom:0.75rem;">No sub-components. Batteries are tracked at the device level.</p>
  {% endif %}
  <a class="btn btn-sm btn-secondary" href="{{ url_for('device_add') }}?parent_id={{ device.id }}">+ Add Sub-component</a>
</div>
{% endif %}

<div class="card">
  <h2>Install Batteries</h2>
  {% set free_slots = device.battery_slots - device.installed_count() %}
  <p class="text-muted" style="margin-bottom:0.75rem;">{{ free_slots }} slot(s) free{% if device.battery_size %} &mdash; showing {{ device.battery_size }} batteries only{% endif %}</p>
  <form method="post" action="{{ url_for('device_install', device_id=device.id) }}">
    <div id="install-grid" style="display:grid;grid-template-columns:1fr auto;gap:0.4rem;max-width:400px;align-items:start;margin-bottom:0.5rem;">
      <span style="font-weight:600;font-size:0.85rem;color:#64748b;">Brand</span>
      <span style="font-weight:600;font-size:0.85rem;color:#64748b;">Qty</span>
      <div class="install-row-pair" style="display:contents;">
        <div>
          <select onchange="brandSelectChanged(this)">
            <option value="">— select —</option>
            {% for b in brands|default([]) %}
            <option value="{{ b }}">{{ b }}</option>
            {% endfor %}
            <option value="__new__">➕ New brand…</option>
          </select>
          <input type="text" name="brand[]" value=""
                 placeholder="Type brand name"
                 style="display:none;margin-top:0.3rem;padding:0.3rem 0.5rem;">
        </div>
        <input type="number" name="qty[]" value="0" min="0"
               style="padding:0.3rem 0.5rem;width:4rem;text-align:center;">
      </div>
    </div>
    <button type="button" class="btn btn-sm btn-secondary" onclick="addInstallRow()" style="margin-bottom:0.75rem;">+ Add brand</button>
    <br>
    <button class="btn btn-primary" type="submit">Install</button>
  </form>

<script>
function editTypeSelectChanged(sel) {
  var input = document.getElementById('edit-device-type');
  if (sel.value === '__new__') {
    input.style.display = ''; input.value = ''; input.focus();
  } else {
    input.style.display = 'none'; input.value = sel.value;
  }
}
function editSizeSelectChanged(sel) {
  var input = document.getElementById('edit-battery-size');
  if (sel.value === '__new__') {
    input.style.display = ''; input.value = ''; input.focus();
  } else {
    input.style.display = 'none'; input.value = sel.value;
  }
}
function editLocationSelectChanged(sel) {
  var input = document.getElementById('edit-location');
  if (sel.value === '__new__') {
    input.style.display = ''; input.value = ''; input.focus();
  } else {
    input.style.display = 'none'; input.value = sel.value;
  }
}
function brandSelectChanged(sel) {
  var input = sel.nextElementSibling;
  if (sel.value === '__new__') {
    input.style.display = ''; input.value = ''; input.focus();
  } else {
    input.style.display = 'none';
    input.value = (sel.value === '') ? '' : sel.value;
  }
}
function addInstallRow() {
  var grid = document.getElementById('install-grid');
  var tmpl = grid.querySelector('.install-row-pair');
  var clone = tmpl.cloneNode(true);
  clone.querySelector('select').value = '';
  clone.querySelector('input[type=text]').style.display = 'none';
  clone.querySelector('input[type=text]').value = '';
  clone.querySelector('input[type=number]').value = '0';
  grid.appendChild(clone);
}
</script>
</div>

<div class="card" id="installed">
  <h2>Installed Batteries</h2>
  {% set installed = device.batteries | selectattr('status', 'eq', 'installed') | list %}
  {% if installed %}
    <div class="table-wrap">
      <table class="responsive-table">
        <thead>
          <tr><th>Label</th><th>Brand</th>{% if ha_enabled %}<th>Bat %</th>{% endif %}<th>Last Charged</th><th>Notes</th><th>Actions</th></tr>
        </thead>
        <tbody>
          {% for b in installed %}
          <tr>
            <td data-label="Label"><a href="{{ url_for('battery_detail', battery_id=b.id) }}">{{ b.label }}</a></td>
            <td data-label="Brand">{{ b.brand }}</td>
            {% if ha_enabled %}
            <td data-label="Bat %">
              {% if b.battery_percentage is not none %}
                {% if b.battery_percentage < 20 %}
                  <span class="badge badge-warning" title="Low — consider replacing">⚠ {{ b.battery_percentage }}%</span>
                {% else %}{{ b.battery_percentage }}%{% endif %}
              {% else %}—{% endif %}
            </td>
            {% endif %}
            <td data-label="Last Charged" class="text-muted">{{ b.charge_logs[-1].charged_date if b.charge_logs else '—' }}</td>
            <td data-label="Notes" class="text-muted">{{ b.notes or '—' }}</td>
            <td data-label="Actions">
              <form class="inline" method="post" action="{{ url_for('battery_unassign', battery_id=b.id) }}">
                <input type="hidden" name="next" value="{{ url_for('device_detail', device_id=device.id) }}#installed">
                <button class="btn btn-sm btn-warning" type="submit">Unassign</button>
              </form>
            </td>
          </tr>
          {% endfor %}
        </tbody>
      </table>
    </div>
  {% else %}
    <p class="text-muted">No batteries installed.</p>
  {% endif %}
  {% if installed %}
  <form class="inline" method="post"
        action="{{ url_for('device_unassign_all', device_id=device.id) }}"
        data-confirm="Unassign all batteries from {{ device.name }}?"
        data-confirm-ok="Unassign" data-confirm-class="btn-warning"
        style="margin-top:0.5rem;">
    <input type="hidden" name="next" value="{{ url_for('device_detail', device_id=device.id) }}#installed">
    <button class="btn btn-sm btn-warning" type="submit">Unassign All</button>
  </form>
  {% endif %}
</div>

{% if installed %}
<div class="card">
  <h2>Charge All Installed Batteries</h2>
  <form method="post" action="{{ url_for('device_charge_all', device_id=device.id) }}"
        style="display:flex;gap:0.5rem;flex-wrap:wrap;align-items:flex-end;">
    <div class="form-group" style="margin:0;flex:1;min-width:140px;">
      <label>Date</label>
      <input type="date" name="charged_date" required>
    </div>
    <div class="form-group" style="margin:0;align-self:flex-end;padding-bottom:1rem;">
      <label style="display:flex;align-items:center;gap:0.4rem;font-weight:normal;cursor:pointer;">
        <input type="checkbox" name="increment_cycles" value="1" checked>
        Increment charge cycles
      </label>
    </div>
    <div class="form-group" style="margin:0;flex:2;min-width:160px;">
      <label>Notes (optional)</label>
      <input type="text" name="notes" placeholder="e.g. overnight charge">
    </div>
    <div style="padding-bottom:1rem;">
      <button class="btn btn-primary" type="submit">Log Charge for All</button>
    </div>
  </form>
</div>
{% endif %}

<div class="card">
  <h2>Install Specific Batteries{% if device.battery_size %} <small class="text-muted" style="font-weight:normal;font-size:0.8rem;">({{ device.battery_size }} only)</small>{% endif %}</h2>
  {% if available_batteries %}
  <form method="post" action="{{ url_for('device_install_batch', device_id=device.id) }}">
    <div style="margin-bottom:0.5rem;">
      <label style="font-size:0.85rem;cursor:pointer;">
        <input type="checkbox" id="select-all-avail" onchange="toggleAllAvail(this)"> Select all
      </label>
    </div>
    <div style="max-height:200px;overflow-y:auto;border:1px solid #cbd5e1;border-radius:4px;padding:0.4rem 0.6rem;">
      {% for b in available_batteries %}
      <div>
        <label style="font-size:0.9rem;cursor:pointer;">
          <input type="checkbox" name="battery_ids" value="{{ b.id }}">
          {{ b.label }} — {{ b.brand }}{% if b.battery_percentage is not none %} ({{ b.battery_percentage }}%){% endif %}
        </label>
      </div>
      {% endfor %}
    </div>
    <button class="btn btn-sm btn-primary" type="submit" style="margin-top:0.5rem;">Install Selected</button>
  </form>
  <script>
  var FREE_SLOTS = {{ device.battery_slots - device.installed_count() }};
  var checkedQueue = [];

  document.querySelectorAll('input[name="battery_ids"]').forEach(function(cb) {
    cb.addEventListener('change', function() {
      if (cb.checked) {
        checkedQueue.push(cb);
        if (checkedQueue.length > FREE_SLOTS) {
          var oldest = checkedQueue.shift();
          oldest.checked = false;
        }
      } else {
        checkedQueue = checkedQueue.filter(function(c) { return c !== cb; });
      }
      document.getElementById('select-all-avail').checked = false;
    });
  });

  function toggleAllAvail(masterCb) {
    var all = Array.from(document.querySelectorAll('input[name="battery_ids"]'));
    if (masterCb.checked) {
      checkedQueue = [];
      all.forEach(function(c) { c.checked = false; });
      all.slice(0, FREE_SLOTS).forEach(function(c) { c.checked = true; checkedQueue.push(c); });
      if (all.length > FREE_SLOTS) masterCb.checked = false;
    } else {
      all.forEach(function(c) { c.checked = false; });
      checkedQueue = [];
    }
  }
  </script>
  {% else %}
    <p class="text-muted">No compatible batteries available.</p>
  {% endif %}
</div>

<div class="card">
  <h2>Logbook</h2>
  {% if logbook_entries %}
    <div style="display:flex;flex-direction:column;gap:0.6rem;margin-bottom:1rem;">
      {% for entry in logbook_entries %}
      <div style="border-left:3px solid var(--border);padding:0.35rem 0.75rem;
                  display:flex;justify-content:space-between;align-items:flex-start;gap:0.5rem;">
        <div>
          <div class="text-muted" style="font-size:0.78rem;margin-bottom:0.15rem;">{{ entry.recorded_at }}</div>
          <div style="white-space:pre-wrap;">{{ entry.body }}</div>
        </div>
        <form method="post"
              action="{{ url_for('device_logbook_delete', device_id=device.id, entry_id=entry.id) }}"
              data-confirm="Delete this logbook entry?" data-confirm-ok="Delete">
          <button class="btn btn-sm btn-danger" type="submit">Delete</button>
        </form>
      </div>
      {% endfor %}
    </div>
  {% else %}
    <p class="text-muted" style="margin-bottom:0.75rem;">No logbook entries yet.</p>
  {% endif %}
  <h3 style="font-size:1rem;margin:0.75rem 0 0.5rem;color:var(--text-h2);">Add Entry</h3>
  <form method="post" action="{{ url_for('device_logbook_add', device_id=device.id) }}">
    <div class="form-group" style="margin-bottom:0.5rem;">
      <textarea name="body" placeholder="Write a note…" rows="2" required style="min-height:60px;"></textarea>
    </div>
    <button class="btn btn-primary" type="submit">Add Entry</button>
  </form>
</div>

<div class="card">
  <h2>Edit Device</h2>
  <form method="post" action="{{ url_for('device_edit', device_id=device.id) }}">
    <div class="form-group">
      <label for="edit-name">Name</label>
      <input type="text" id="edit-name" name="name" value="{{ device.name }}" required>
    </div>
    <div class="form-group">
      <label for="edit-slots">Battery Slots</label>
      <input type="number" id="edit-slots" name="battery_slots" value="{{ device.battery_slots }}" min="1" required>
    </div>
    <div class="form-group">
      <label>Type</label>
      {% set _preset_types = ['Remote Control','Game Controller','Flashlight','Lock','Sensor','Toy','Clock','Smoke Detector'] %}
      <select id="edit-device-type-select" onchange="editTypeSelectChanged(this)">
        <option value="">— none —</option>
        {% for opt in _preset_types %}
        <option value="{{ opt }}" {% if device.device_type == opt %}selected{% endif %}>{{ opt }}</option>
        {% endfor %}
        {% for opt in device_types|default([]) %}
          {% if opt not in _preset_types %}
        <option value="{{ opt }}" {% if device.device_type == opt %}selected{% endif %}>{{ opt }}</option>
          {% endif %}
        {% endfor %}
        <option value="__new__" {% if device.device_type and device.device_type not in _preset_types and device.device_type not in device_types|default([]) %}selected{% endif %}>Other…</option>
      </select>
      <input type="text" id="edit-device-type" name="device_type"
             value="{{ device.device_type or '' }}"
             placeholder="Enter device type"
             style="display:{% if device.device_type and device.device_type not in _preset_types %}''{% else %}none{% endif %};margin-top:0.4rem;">
    </div>
    <div class="form-group">
      <label>Battery Size</label>
      {% set _preset_sizes = ['AA','AAA','C','D','9V','CR2032','CR2025','CR2016','18650','14500','16340','26650','LR44/AG13'] %}
      <select id="edit-battery-size-select" onchange="editSizeSelectChanged(this)">
        <option value="">— none —</option>
        {% for s in _preset_sizes %}
        <option value="{{ s }}" {% if device.battery_size == s %}selected{% endif %}>{{ s }}</option>
        {% endfor %}
        {% for s in device_battery_sizes|default([]) %}
          {% if s not in _preset_sizes %}
        <option value="{{ s }}" {% if device.battery_size == s %}selected{% endif %}>{{ s }}</option>
          {% endif %}
        {% endfor %}
        {% if device.battery_size and device.battery_size not in _preset_sizes and device.battery_size not in device_battery_sizes|default([]) %}
        <option value="{{ device.battery_size }}" selected>{{ device.battery_size }}</option>
        {% endif %}
        <option value="__new__">Other…</option>
      </select>
      <input type="text" id="edit-battery-size" name="battery_size"
             value="{{ device.battery_size or '' }}"
             placeholder="e.g. CR123A"
             style="display:{% if device.battery_size and device.battery_size not in _preset_sizes %}''{% else %}none{% endif %};margin-top:0.4rem;">
    </div>
    <div class="form-group">
      <label>Location</label>
      <select id="edit-location-select" onchange="editLocationSelectChanged(this)">
        <option value="">— none —</option>
        {% for loc in device_locations|default([]) %}
        <option value="{{ loc }}" {% if device.location == loc %}selected{% endif %}>{{ loc }}</option>
        {% endfor %}
        {% if device.location and device.location not in device_locations|default([]) %}
        <option value="{{ device.location }}" selected>{{ device.location }}</option>
        {% endif %}
        <option value="__new__">➕ New location…</option>
      </select>
      <input type="text" id="edit-location" name="location"
             value="{{ device.location or '' }}"
             placeholder="e.g. Living Room, Bedroom"
             style="display:{% if device.location and device.location not in device_locations|default([]) %}''{% else %}none{% endif %};margin-top:0.4rem;">
    </div>

    <div class="form-group">
      <label for="edit-notes">Notes</label>
      <textarea id="edit-notes" name="notes">{{ device.notes or '' }}</textarea>
    </div>
    {% if not device.has_children() %}
    <div class="form-group">
      <label for="edit-parent">Part of Device (optional)</label>
      <select id="edit-parent" name="parent_id">
        <option value="">— none (top-level device) —</option>
        {% for d in device_list_all|default([]) %}
          {% if d.id != device.id and not d.is_subcomponent() %}
          <option value="{{ d.id }}" {% if device.parent_id == d.id %}selected{% endif %}>{{ d.name }}</option>
          {% endif %}
        {% endfor %}
      </select>
    </div>
    {% endif %}
    {% if ha_enabled %}
    <div class="form-group">
      <label for="edit-ha-entity">Home Assistant Entity ID</label>
      <div style="position:relative;">
        <input type="text" id="edit-ha-entity" name="ha_entity_id"
               value="{{ device.ha_entity_id or '' }}"
               placeholder="e.g. sensor.tv_remote_battery"
               autocomplete="off">
        <div id="ha-entity-dropdown"
             style="display:none;position:absolute;left:0;right:0;top:100%;z-index:200;
                    background:var(--bg-card);border:1px solid var(--border);border-radius:4px;
                    max-height:220px;overflow-y:auto;box-shadow:0 4px 12px rgba(0,0,0,0.15);"></div>
      </div>
      <small class="text-muted" id="ha-entities-status"
             style="display:block;margin-top:0.25rem;font-size:0.8rem;"></small>
    </div>
    {% endif %}
    <button class="btn btn-primary" type="submit">Save Changes</button>
  </form>
</div>

<div class="card">
  <h2>Delete Device</h2>
  <p style="margin-bottom:1rem;" class="text-muted">
    Deleting this device will unassign all installed batteries and mark them available.
    {% if device.has_children() %}
    Sub-components ({{ device.children|map(attribute='name')|join(', ') }}) will become independent devices.
    {% endif %}
  </p>
  <form method="post" action="{{ url_for('device_delete', device_id=device.id) }}">
    <button class="btn btn-danger" type="submit">Delete {{ device.name }}</button>
  </form>
</div>

<a class="text-muted" href="{{ url_for('device_list') }}">&larr; Back to Devices</a>

{% if ha_enabled %}
<script>
(function() {
  var input    = document.getElementById('edit-ha-entity');
  var dropdown = document.getElementById('ha-entity-dropdown');
  var status   = document.getElementById('ha-entities-status');
  if (!input || !dropdown) return;

  var allEntities = [];

  function renderDropdown(query) {
    var q = query.toLowerCase();
    var matches = q
      ? allEntities.filter(function(e) {
          return e.entity_id.toLowerCase().indexOf(q) !== -1
              || (e.friendly_name && e.friendly_name.toLowerCase().indexOf(q) !== -1);
        })
      : allEntities;
    if (!matches.length) { dropdown.style.display = 'none'; return; }
    dropdown.innerHTML = '';
    matches.slice(0, 60).forEach(function(e) {
      var item = document.createElement('div');
      item.style.cssText = 'padding:0.5rem 0.75rem;cursor:pointer;border-bottom:1px solid var(--border);';
      var label = document.createElement('div');
      label.style.cssText = 'font-size:0.875rem;word-break:break-all;';
      label.textContent = e.entity_id;
      item.appendChild(label);
      if (e.friendly_name && e.friendly_name !== e.entity_id) {
        var sub = document.createElement('div');
        sub.style.cssText = 'font-size:0.75rem;color:var(--text-muted);';
        sub.textContent = e.friendly_name;
        item.appendChild(sub);
      }
      item.addEventListener('mousedown', function(ev) { ev.preventDefault(); });
      item.addEventListener('click', function() {
        input.value = e.entity_id;
        dropdown.style.display = 'none';
        input.focus();
      });
      item.addEventListener('mouseover', function() { this.style.background = 'var(--bg-hover)'; });
      item.addEventListener('mouseout',  function() { this.style.background = ''; });
      dropdown.appendChild(item);
    });
    dropdown.style.display = 'block';
  }

  input.addEventListener('input',   function() { renderDropdown(this.value); });
  input.addEventListener('focus',   function() { if (allEntities.length) renderDropdown(this.value); });
  input.addEventListener('blur',    function() { setTimeout(function() { dropdown.style.display = 'none'; }, 150); });
  input.addEventListener('keydown', function(e) { if (e.key === 'Escape') dropdown.style.display = 'none'; });
  document.addEventListener('click', function(e) {
    if (!input.contains(e.target) && !dropdown.contains(e.target)) dropdown.style.display = 'none';
  });

  function onEntities(entities) {
    allEntities = entities;
    if (status) status.textContent = entities.length ? entities.length + ' battery entities available' : '';
  }

  try {
    var cached = sessionStorage.getItem('ha_battery_entities');
    if (cached) { onEntities(JSON.parse(cached)); return; }
  } catch(e) {}

  if (status) status.textContent = 'Loading HA entities\u2026';
  fetch('/ha/entities')
    .then(function(r) { return r.json(); })
    .then(function(entities) {
      try { sessionStorage.setItem('ha_battery_entities', JSON.stringify(entities)); } catch(e) {}
      onEntities(entities);
    })
    .catch(function() { if (status) status.textContent = ''; });
}());
</script>
{% endif %}
{% endblock %}