{% extends "base.html" %}
{% load i18n %}
{% load static %}
{% load bootstrap_icons %}

{% block title %}{% trans "Network filter" %} - {{ name }}{% endblock %}

{% block page_heading %}{{ compute.name }} - {% trans "Network filter" %}: {{ name }}{% endblock page_heading %}

{% block content %}
    {% include "computes/host_nav.html" with section="nwfilters" detail=True %}

    {% if uuid %}
    <div class="card mb-3">
        <div class="card-header">{% trans "Filter" %}</div>
        <ul class="list-group list-group-flush">
            <li class="list-group-item py-1 d-flex justify-content-between align-items-baseline gap-3">
                <span class="text-body-secondary">{% trans "UUID" %}</span><span class="font-monospace text-break text-end">{{ uuid }}</span>
            </li>
            <li class="list-group-item py-1 d-flex justify-content-between align-items-baseline gap-3">
                <span class="text-body-secondary">{% trans "Chain" %}</span><span class="font-monospace">{{ chain|default:"–" }}</span>
            </li>
            <li class="list-group-item py-1 d-flex justify-content-between align-items-baseline gap-3">
                <span class="text-body-secondary">{% trans "Priority" %}</span><span>{% if priority is not None %}{{ priority }}{% else %}–{% endif %}</span>
            </li>
            <li class="list-group-item py-1 d-flex justify-content-between align-items-baseline gap-3">
                <span class="text-body-secondary">{% trans "Directly used by" %}</span>
                <span class="text-end">{% for vm in vms %}{% if vm.id %}<a href="{% url 'instances:instance' vm.id %}">{{ vm.name }}</a>{% else %}{{ vm.name }}{% endif %}{% if not forloop.last %}, {% endif %}{% empty %}–{% endfor %}</span>
            </li>
            <li class="list-group-item py-1 d-flex justify-content-between align-items-baseline gap-3">
                <span class="text-body-secondary">{% trans "Referenced by" %}</span>
                <span class="text-end">{% for other in referenced_by %}<a href="{% url 'nwfilter' compute.id other %}">{{ other }}</a>{% if not forloop.last %}, {% endif %}{% empty %}–{% endfor %}</span>
            </li>
        </ul>
    </div>

    <div class="card mb-3">
        <div class="card-header d-flex flex-wrap align-items-center gap-2">
            <span class="me-auto">{% trans "References" %}</span>
            {% if ref_choices %}
            <form method="post" class="d-flex gap-2">{% csrf_token %}
                <select name="nwfilters_select" class="form-select form-select-sm w-auto" aria-label="{% trans "Filter to reference" %}" required>
                    {% for choice in ref_choices %}<option value="{{ choice }}">{{ choice }}</option>{% endfor %}
                </select>
                <button type="submit" class="btn btn-sm btn-primary text-nowrap" name="add_nwfilter_ref">{% bs_icon 'plus-lg' %} {% trans "Add" %}</button>
            </form>
            {% endif %}
        </div>
        {% if refs %}
        <div class="table-responsive position-relative">
            <table class="table table-hover align-middle mb-0">
                <thead>
                    <tr>
                        <th scope="col">{% trans "Filter" %}</th>
                        <th scope="col">{% trans "Parameters" %}</th>
                        <th scope="col"><span class="visually-hidden">{% trans "Actions" %}</span></th>
                    </tr>
                </thead>
                <tbody>
                {% for ref in refs %}
                    <tr>
                        <td class="text-nowrap">
                            {% if ref.filter in filter_names %}<a href="{% url 'nwfilter' compute.id ref.filter %}">{{ ref.filter }}</a>
                            {% else %}{{ ref.filter }} <span class="badge bg-danger-subtle text-danger-emphasis">{% trans "Missing" %}</span>{% endif %}
                        </td>
                        <td class="font-monospace small">{% for param, value in ref.parameters %}<div>{{ param }}={{ value }}</div>{% empty %}–{% endfor %}</td>
                        <td class="text-end">
                            <form method="post">{% csrf_token %}
                                <input type="hidden" name="index" value="{{ forloop.counter0 }}">
                                <input type="hidden" name="ref" value="{{ ref.text }}">
                                <button type="submit" class="btn btn-sm btn-outline-danger" name="del_nwfilter_ref" aria-label="{% blocktrans with ref=ref.filter %}Remove the reference to {{ ref }}{% endblocktrans %}"
                                        data-confirm="{% blocktrans with ref=ref.filter %}Remove the reference to {{ ref }}? Its rules no longer apply through this filter.{% endblocktrans %}">{% bs_icon 'trash' %}</button>
                            </form>
                        </td>
                    </tr>
                {% endfor %}
                </tbody>
            </table>
        </div>
        {% else %}
        <div class="card-body small text-body-secondary">{% trans "It references no other filter." %}</div>
        {% endif %}
    </div>

    <div class="card mb-3">
        <div class="card-header d-flex flex-wrap align-items-center gap-2">
            <span class="me-auto">{% trans "Rules" %}</span>
            <button type="button" class="btn btn-sm btn-primary" data-bs-toggle="modal" data-bs-target="#AddNWFilterRule">{% bs_icon 'plus-lg' %} {% trans "Add rule" %}</button>
        </div>
        {% if rules %}
        <div class="table-responsive position-relative">
            <table class="table table-hover align-middle mb-0">
                <thead>
                    <tr>
                        <th scope="col">#</th>
                        <th scope="col">{% trans "Action" %}</th>
                        <th scope="col">{% trans "Direction" %}</th>
                        <th scope="col">{% trans "Priority" %}</th>
                        <th scope="col">{% trans "Matches" %}</th>
                        <th scope="col"><span class="visually-hidden">{% trans "Actions" %}</span></th>
                    </tr>
                </thead>
                <tbody>
                {% for rule in rules %}
                    <tr>
                        <th scope="row">{{ forloop.counter }}</th>
                        <td>
                            {% if rule.action == "accept" %}<span class="badge bg-success-subtle text-success-emphasis">{% trans "Accept" %}</span>
                            {% elif rule.action == "drop" or rule.action == "reject" %}<span class="badge bg-danger-subtle text-danger-emphasis">{{ rule.action|capfirst }}</span>
                            {% else %}<span class="badge text-bg-light border">{{ rule.action|capfirst }}</span>{% endif %}
                        </td>
                        <td class="text-nowrap">{% if rule.direction == "in" %}{% trans "To the VM" %}{% elif rule.direction == "out" %}{% trans "From the VM" %}{% elif rule.direction == "inout" %}{% trans "Both ways" %}{% else %}{{ rule.direction }}{% endif %}</td>
                        <td>{% if rule.priority is not None %}{{ rule.priority }}{% else %}500{% endif %}</td>
                        <td class="small">
                            {% for protocol in rule.protocols %}
                            <div><span class="badge text-bg-light border">{{ protocol.name }}</span>{% for attribute, value in protocol.attributes %} <span class="font-monospace">{{ attribute }}={{ value }}</span>{% endfor %}</div>
                            {% empty %}
                            <span class="text-body-secondary">{% trans "Any traffic of the chain" %}</span>
                            {% endfor %}
                            {% if rule.statematch == "false" or rule.statematch == "0" %}<div class="text-body-secondary">{% trans "Without connection tracking" %}</div>{% endif %}
                        </td>
                        <td class="text-end">
                            <form method="post">{% csrf_token %}
                                <input type="hidden" name="index" value="{{ forloop.counter0 }}">
                                <input type="hidden" name="rule" value="{{ rule.text }}">
                                <button type="submit" class="btn btn-sm btn-outline-danger" name="del_nwfilter_rule" aria-label="{% blocktrans with number=forloop.counter %}Delete rule {{ number }}{% endblocktrans %}"
                                        data-confirm="{% trans "Delete this rule? Interfaces that use the filter no longer get it." %}">{% bs_icon 'trash' %}</button>
                            </form>
                        </td>
                    </tr>
                {% endfor %}
                </tbody>
            </table>
        </div>
        {% else %}
        <div class="card-body small text-body-secondary">{% trans "The filter has no rules of its own." %}</div>
        {% endif %}
    </div>

    <section class="accordion mb-3" aria-labelledby="xml-heading">
        <div class="accordion-item">
            <h2 class="accordion-header" id="xml-heading">
                <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#nwfilter-xml" aria-expanded="false" aria-controls="nwfilter-xml">
                    {% trans "XML definition" %}
                </button>
            </h2>
            <div class="accordion-collapse collapse" id="nwfilter-xml">
                <form method="post" class="accordion-body" aria-label="{% trans "Change the filter's XML" %}">{% csrf_token %}
                    <p class="small text-body-secondary">{% trans "A change applies at once, also to the running VMs that use the filter; it keeps the filter's name and UUID." %}</p>
                    <input type="hidden" name="edit_xml">
                    <div class="xmlheight mb-3"><textarea id="edit_editor" aria-label="{% trans "Filter XML" %}">{{ xml }}</textarea></div>
                    <div class="d-flex justify-content-end">
                        <button type="submit" class="btn btn-primary" name="edit_nwfilter">{% trans "Save" %}</button>
                    </div>
                </form>
            </div>
        </div>
    </section>

    <div class="modal fade" id="AddNWFilterRule" tabindex="-1" aria-labelledby="AddNWFilterRuleLabel" aria-hidden="true">
        <div class="modal-dialog modal-lg modal-fullscreen-sm-down">
            <form method="post" class="modal-content">{% csrf_token %}
                <div class="modal-header">
                    <h5 class="modal-title" id="AddNWFilterRuleLabel">{% trans "Add rule" %}</h5>
                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="{% trans "Close" %}"></button>
                </div>
                <div class="modal-body">
                    <p class="small text-body-secondary" id="rule_editor_help">
                        {% trans "One rule: in is traffic to the VM, out from it; a lower priority applies first (500 if none is given)." %}
                        <a href="https://libvirt.org/formatnwfilter.html#supported-protocols" target="_blank" rel="noopener">{% trans "The protocols and their attributes" %}</a>
                    </p>
                    <input type="hidden" name="nwfilterrule_xml">
                    <div class="xmlheight"><textarea id="rule_editor" aria-label="{% trans "Rule XML" %}" aria-describedby="rule_editor_help">&lt;rule action='accept' direction='in' priority='500'&gt;
  &lt;tcp dstportstart='443'/&gt;
&lt;/rule&gt;</textarea></div>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-outline-secondary" data-bs-dismiss="modal">{% trans "Cancel" %}</button>
                    <button type="submit" class="btn btn-primary" name="add_nwfilter_rule">{% trans "Add rule" %}</button>
                </div>
            </form>
        </div>
    </div>
    {% endif %}
{% endblock %}

{% block script %}
{% if uuid %}
<script src="{% static 'js/ace/ace.js' %}"></script>
<script src="{% static 'js/nwfilter_page.js' %}"></script>
{% endif %}
{% endblock %}