{% extends "base.html" %}
{% set active_page = "settings_system" %}
{% block page_title %}Systemeinstellungen{% endblock %}
{% block page_sub %}<div class="topbar-sub">Prüfintervall und Netzwerkkonfiguration dieses Hosts</div>{% endblock %}

{% block content %}
<div class="settings-grid">

  <div class="card card-pad">
    <div class="section-head" style="margin-bottom:16px;">
      <div>
        <h2 style="font-size:16px;">Host</h2>
        <div class="hint">Name und Zeitzone dieses Hosts.</div>
      </div>
    </div>
    {% if current_user.has_permission('settings_system.edit') %}
    <form method="post">
      <div class="field">
        <label for="hostname">Hostname</label>
        <input type="text" name="hostname" id="hostname" value="{{ current_hostname or '' }}" pattern="[a-zA-Z0-9][a-zA-Z0-9-]{0,61}[a-zA-Z0-9]?" required>
      </div>
      <button type="submit" class="btn btn-primary btn-block">
        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M20 6L9 17l-5-5"/></svg>
        Hostname setzen
      </button>
    </form>
    <hr style="border:none; border-top:1px solid var(--border-soft); margin:18px 0;">
    <form method="post">
      <div class="field">
        <label for="timezone">Zeitzone</label>
        <select name="timezone" id="timezone" required>
          {% for tz in timezones %}
          <option value="{{ tz }}" {% if tz == current_timezone %}selected{% endif %}>{{ tz }}</option>
          {% endfor %}
        </select>
        <div class="field-hint">Bestimmt die lokale Zeit in allen Logs und im Änderungsverlauf — wirkt sofort für diese laufende App-Instanz, ohne Dienst-Neustart.</div>
      </div>
      <button type="submit" class="btn btn-primary btn-block">
        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M20 6L9 17l-5-5"/></svg>
        Zeitzone setzen
      </button>
    </form>
    <hr style="border:none; border-top:1px solid var(--border-soft); margin:18px 0;">
    <form method="post">
      <div class="field">
        <label for="interval">Prüfintervall (Minuten)</label>
        <input type="number" name="interval" id="interval" value="{{ interval }}" min="1" required>
        <div class="field-hint">Wie oft Geräte auf Erreichbarkeit geprüft werden. Der Hintergrund-Dienst (rpi-check.service) wird nach dem Speichern automatisch neu gestartet.</div>
      </div>
      <button type="submit" class="btn btn-primary btn-block">
        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M20 6L9 17l-5-5"/></svg>
        Speichern & Service neustarten
      </button>
    </form>
    {% else %}
    <div class="field">
      <label>Hostname</label>
      <input type="text" value="{{ current_hostname or '' }}" disabled>
    </div>
    <div class="field">
      <label>Zeitzone</label>
      <input type="text" value="{{ current_timezone or '' }}" disabled>
    </div>
    <div class="field">
      <label>Prüfintervall (Minuten)</label>
      <input type="number" value="{{ interval }}" disabled>
      <div class="field-hint">Nur Lesezugriff — für Änderungen fehlt das Recht „Systemeinstellungen ändern“.</div>
    </div>
    {% endif %}
  </div>

  <div class="card card-pad">
    <div class="section-head" style="margin-bottom:16px;">
      <div>
        <h2 style="font-size:16px;">Netzwerkeinstellungen</h2>
        <div class="hint">IP/DNS/DHCP-Umschaltung dieses Hosts (nicht der DHCP-<em>Server</em> unter „DHCP“).</div>
      </div>
    </div>

    <div class="flex gap-2" style="align-items:center; margin-bottom:12px; flex-wrap:wrap;">
      {% if net_backend == 'unknown' %}
      <span class="pill unknown">Kein unterstütztes Backend erkannt</span>
      {% else %}
      <span class="pill online">{{ {'networkmanager': 'NetworkManager', 'dhcpcd': 'dhcpcd', 'netplan': 'netplan'}[net_backend] }}</span>
      {% endif %}
    </div>
    {% for state in active_net_states %}
    <div class="flex gap-2" style="align-items:center; margin-bottom:8px; flex-wrap:wrap;">
      <span class="mono text-faint" style="font-size:12px;">
        {{ state.interface }} — {{ state.ip }}/{{ state.prefix }}{% if state.gateway %}, Gateway {{ state.gateway }}{% endif %}
      </span>
      <span class="pill {{ 'user' if state.mode == 'static' else ('online' if state.mode == 'dhcp' else 'unknown') }}">
        {{ {'static': 'Statisch', 'dhcp': 'DHCP', 'unknown': 'Modus unbekannt'}[state.mode] }}
      </span>
      {% if state.dns %}
      <span class="text-faint" style="font-size:12px;">DNS: <span class="mono">{{ state.dns|join(', ') }}</span></span>
      {% endif %}
    </div>
    {% else %}
    <div class="text-faint" style="font-size:12px; margin-bottom:8px;">Kein aktives Interface mit IPv4-Adresse gefunden.</div>
    {% endfor %}
    <div style="margin-bottom:16px;"></div>

    {% if pending_network_token %}
    <div class="card-pad" style="background:var(--warning-dim); border-radius:var(--radius-sm); margin-bottom:16px;">
      <p style="margin:0 0 12px; font-size:13px;">
        Neue Netzwerkkonfiguration wurde angewendet. Wenn diese Seite gerade noch lädt, funktioniert die Verbindung —
        bitte bestätigen, bevor automatisch zurückgerollt wird (nach {{ net_revert_seconds }}s ohne Bestätigung).
      </p>
      <form method="post">
        <input type="hidden" name="confirm_network" value="{{ pending_network_token }}">
        <button type="submit" class="btn btn-primary">
          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M20 6L9 17l-5-5"/></svg>
          Verbindung funktioniert — bestätigen
        </button>
      </form>
    </div>
    {% elif net_backend != 'unknown' and current_user.has_permission('settings_system.edit') %}
    <form method="post" data-confirm="Netzwerkkonfiguration wirklich ändern? Falls die Verbindung danach abbricht, wird die vorherige Konfiguration automatisch nach {{ net_revert_seconds }} Sekunden wiederhergestellt.">
      <input type="hidden" name="apply_network" value="1">
      <div class="field"><label>Interface</label>
        <select name="net_interface" id="netInterfaceSelect" onchange="loadNetworkState(this.value)">
          {% for iface in net_interfaces %}
          <option value="{{ iface }}" {% if iface == net_interface %}selected{% endif %}>{{ iface }}</option>
          {% endfor %}
        </select>
        <div class="field-hint">Jedes Interface hat seine eigene Konfiguration — ein Wechsel hier lädt unten dessen tatsächlichen Ist-Zustand, ändert aber noch nichts.</div>
      </div>
      <div class="field"><label>Modus</label>
        <select name="net_mode" id="netModeSelect" onchange="document.getElementById('netStaticFields').classList.toggle('hidden', this.value !== 'static')">
          <option value="dhcp" {% if net_state.mode != 'static' %}selected{% endif %}>DHCP (automatisch)</option>
          <option value="static" {% if net_state.mode == 'static' %}selected{% endif %}>Statisch</option>
        </select>
      </div>
      <div id="netStaticFields" class="{{ 'hidden' if net_state.mode != 'static' }}">
        <div class="field"><label>IP-Adresse</label>
          <input type="text" name="net_ip" id="netIpInput" value="{{ net_state.ip if net_state.mode == 'static' else '' }}" placeholder="z.B. 192.168.1.50">
        </div>
        <div class="field"><label>Prefix (CIDR-Bits)</label>
          <input type="number" name="net_prefix" id="netPrefixInput" min="1" max="32" value="{{ net_state.prefix if net_state.mode == 'static' else '' }}" placeholder="z.B. 24">
        </div>
        <div class="field"><label>Gateway</label>
          <input type="text" name="net_gateway" id="netGatewayInput" value="{{ net_state.gateway if net_state.mode == 'static' else '' }}" placeholder="z.B. 192.168.1.1">
        </div>
      </div>
      <div class="field"><label>DNS-Server</label>
        <input type="text" name="net_dns" id="netDnsInput" value="{{ net_state.dns|join(', ') if net_state and net_state.dns else '' }}" placeholder="z.B. 1.1.1.1, 8.8.8.8">
        <div class="field-hint">Kommagetrennt. Leer lassen, um die per DHCP zugewiesenen DNS-Server zu verwenden.</div>
      </div>
      <button type="submit" class="btn btn-primary btn-block">
        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M20 6L9 17l-5-5"/></svg>
        Netzwerkkonfiguration anwenden
      </button>
      <p class="text-faint" style="font-size:11px; margin-top:10px;">
        ⚠ Kann die Erreichbarkeit dieses Hosts unterbrechen. Ohne Bestätigung wird automatisch nach {{ net_revert_seconds }}s zurückgerollt.
      </p>
    </form>
    {% elif net_backend == 'unknown' %}
    <p class="text-faint" style="font-size:12.5px;">
      Weder NetworkManager, dhcpcd noch netplan/systemd-networkd aktiv erkannt — Netzwerkänderungen über diese Seite sind deaktiviert.
      Bitte die Netzwerkkonfiguration dieses Hosts manuell vornehmen.
    </p>
    {% else %}
    <p class="text-faint" style="font-size:12.5px;">Für Änderungen fehlt das Recht „Systemeinstellungen ändern“.</p>
    {% endif %}
  </div>

  <div class="card card-pad">
    <div class="section-head" style="margin-bottom:16px;">
      <div>
        <h2 style="font-size:16px;">Logs</h2>
        <div class="hint">Rotation & Aufbewahrung von Live-, Änderungs-, App- und Kea-DHCP-Log.</div>
      </div>
    </div>
    {% if current_user.has_permission('settings_system.edit') %}
    <form method="post">
      <input type="hidden" name="save_log_rotation" value="1">
      <div class="field">
        <label for="log_rotation_interval">Rotations-Intervall</label>
        <select name="log_rotation_interval" id="log_rotation_interval">
          <option value="daily" {% if log_rotation_interval == "daily" %}selected{% endif %}>Täglich</option>
          <option value="weekly" {% if log_rotation_interval == "weekly" %}selected{% endif %}>Wöchentlich</option>
          <option value="monthly" {% if log_rotation_interval == "monthly" %}selected{% endif %}>Monatlich</option>
        </select>
      </div>
      <div class="field">
        <label for="log_rotation_keep">Aufbewahrung (Anzahl Rotationen)</label>
        <input type="number" name="log_rotation_keep" id="log_rotation_keep" value="{{ log_rotation_keep }}" min="1" required>
        <div class="field-hint">Standard: wöchentlich, 4 Rotationen (≈ 1 Monat Historie je Log).</div>
      </div>
      <button type="submit" class="btn btn-primary btn-block">
        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M20 6L9 17l-5-5"/></svg>
        Speichern
      </button>
    </form>
    {% else %}
    <div class="field">
      <label>Rotations-Intervall</label>
      <input type="text" value="{{ log_rotation_interval }}" disabled>
    </div>
    <div class="field">
      <label>Aufbewahrung (Anzahl Rotationen)</label>
      <input type="text" value="{{ log_rotation_keep }}" disabled>
    </div>
    {% endif %}
    <div class="field-hint mono" style="margin-top:10px; font-size:11px; line-height:1.6;">
      Live: {{ log_paths.live }}<br>
      Änderungen: {{ log_paths.changes }}<br>
      App: {{ log_paths.app }}<br>
      Kea-DHCP: {{ log_paths.kea }}
    </div>
  </div>

  <div class="card card-pad">
    <div class="section-head" style="margin-bottom:16px;">
      <div>
        <h2 style="font-size:16px;">Papierkorb</h2>
        <div class="hint">Gelöschte Clients, Switche, Zugangsdaten, Benutzer und Gruppen — Liste unter Geräte → Wartung.</div>
      </div>
    </div>
    {% if current_user.has_permission('settings_system.edit') %}
    <form method="post">
      <div class="field">
        <label for="trash_retention_days">Aufbewahrungsdauer (Tage)</label>
        <input type="number" name="trash_retention_days" id="trash_retention_days" value="{{ trash_retention_days }}" min="1" required>
        <div class="field-hint">Danach werden Papierkorb-Einträge automatisch unwiderruflich gelöscht (AD/LDAP-Benutzer sind nie im Papierkorb, da sie sich beim nächsten Login automatisch neu anlegen).</div>
      </div>
      <button type="submit" name="save_trash_retention" value="1" class="btn btn-primary btn-block">
        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M20 6L9 17l-5-5"/></svg>
        Speichern
      </button>
    </form>
    <form method="post" data-confirm="Alle bereits abgelaufenen Papierkorb-Einträge jetzt unwiderruflich löschen?" style="margin-top:10px;">
      <input type="hidden" name="purge_trash_now" value="1">
      <button type="submit" class="btn btn-sm" style="color:var(--danger); background:transparent; border-color:var(--danger-dim);">
        Abgelaufene Einträge jetzt bereinigen
      </button>
    </form>
    {% else %}
    <div class="field">
      <label>Aufbewahrungsdauer (Tage)</label>
      <input type="number" value="{{ trash_retention_days }}" disabled>
    </div>
    {% endif %}
  </div>

  {% if current_user.is_admin %}
  {% macro nav_order_buttons() %}
  <div class="nav-order-actions">
    <button type="button" class="icon-btn" title="Nach oben" onclick="moveNavItem(this,-1)">
      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 19V5M5 12l7-7 7 7"/></svg>
    </button>
    <button type="button" class="icon-btn" title="Nach unten" onclick="moveNavItem(this,1)">
      <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 5v14M5 12l7 7 7-7"/></svg>
    </button>
  </div>
  {% endmacro %}
  <div class="card card-pad">
    <div class="section-head" style="margin-bottom:16px;">
      <div>
        <h2 style="font-size:16px;">Navbar-Reihenfolge</h2>
        <div class="hint">Reihenfolge der Sidebar-Menüpunkte inkl. Unterpunkte — gilt für alle Benutzer.</div>
      </div>
    </div>
    <form method="post" action="{{ url_for('save_nav_order') }}" id="navOrderForm">
      <ul class="nav-order-list" id="navOrderList">
        {% for item in full_nav_items %}
        <li data-key="{{ item.key }}">
          <div class="nav-order-row">
            <span>{{ item.label }}</span>
            {{ nav_order_buttons() }}
          </div>
          <input type="hidden" name="nav_order" value="{{ item.key }}">
          {% if item.children %}
          <ul class="nav-order-sublist">
            {% for child in item.children %}
            <li data-key="{{ child.key }}">
              <div class="nav-order-row">
                <span>{{ child.label }}</span>
                {{ nav_order_buttons() }}
              </div>
              <input type="hidden" name="nav_child_order_{{ item.key }}" value="{{ child.key }}">
            </li>
            {% endfor %}
          </ul>
          {% endif %}
        </li>
        {% endfor %}
      </ul>
      <button type="submit" class="btn btn-primary btn-block">
        <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M20 6L9 17l-5-5"/></svg>
        Reihenfolge speichern
      </button>
    </form>
  </div>
  {% endif %}

</div>
{% endblock %}

{% block scripts %}
<script>
function moveNavItem(btn, dir) {
    const li = btn.closest("li");
    const target = dir === -1 ? li.previousElementSibling : li.nextElementSibling;
    if (!target) return;
    if (dir === -1) li.parentNode.insertBefore(li, target);
    else li.parentNode.insertBefore(target, li);
}

// Lädt beim Umschalten des Interfaces (Netzwerkeinstellungen) dessen
// tatsächlichen Ist-Zustand nach -- ohne das würden die Felder weiter die
// Werte des zuvor angezeigten Interfaces zeigen, obwohl gerade ein anderes
// ausgewählt wurde (bei mehreren Interfaces leicht zu Verwechslungen
// geführt, siehe /settings/network_state).
function loadNetworkState(iface) {
    fetch("{{ url_for('settings_network_state') }}?interface=" + encodeURIComponent(iface))
        .then(r => r.json())
        .then(state => {
            if (state.error) return;
            const isStatic = state.mode === "static";
            document.getElementById("netModeSelect").value = isStatic ? "static" : "dhcp";
            document.getElementById("netStaticFields").classList.toggle("hidden", !isStatic);
            document.getElementById("netIpInput").value = isStatic ? (state.ip || "") : "";
            document.getElementById("netPrefixInput").value = isStatic ? (state.prefix || "") : "";
            document.getElementById("netGatewayInput").value = isStatic ? (state.gateway || "") : "";
            document.getElementById("netDnsInput").value = (state.dns || []).join(", ");
        })
        .catch(() => {});
}
</script>
{% endblock %}