{% extends "base.html" %}
{% block title %}{{ subnet.name|default('新增') }} · 子网{% endblock %}
{% block content %}
<div class="page-head">
    <h1>{% if subnet.network %}编辑子网 {{ subnet.network }}/{{ subnet.netmask }}{% else %}新增子网{% endif %}</h1>
    <a href="{{ url_for('subnet_list') }}" class="btn btn-muted">← 返回</a>
</div>

<form method="post" class="card form">
    <div class="grid-2">
        <label>网络号
            <input type="text" name="network" value="{{ form.network or subnet.network }}"
                   placeholder="192.168.1.0" required pattern="\d{1,3}(\.\d{1,3}){3}">
        </label>
        <label>子网掩码
            <input type="text" name="netmask" value="{{ form.netmask or subnet.netmask }}"
                   placeholder="255.255.255.0" required pattern="(\d{1,3}(\.\d{1,3}){3})|(\d{1,2})">
            <small class="muted">支持 255.255.255.0 或 /24 写法</small>
        </label>
        <label>默认网关
            <input type="text" name="routers" value="{{ form.routers or subnet.routers }}"
                   placeholder="192.168.1.1" required>
        </label>
        <label>DNS 服务器
            <input type="text" name="dns" value="{{ form.dns or subnet.dns }}"
                   placeholder="8.8.8.8, 8.8.4.4" required>
            <small class="muted">多个用逗号分隔</small>
        </label>
        <label>地址池起始
            <input type="text" name="range_start" value="{{ form.range_start or subnet.range_start }}"
                   placeholder="192.168.1.100" required>
        </label>
        <label>地址池结束
            <input type="text" name="range_end" value="{{ form.range_end or subnet.range_end }}"
                   placeholder="192.168.1.200" required>
        </label>
        <label>默认租期(秒)
            <input type="number" name="default_lease" min="60" value="{{ form.default_lease or subnet.default_lease or 600 }}" required>
        </label>
        <label>最大租期(秒)
            <input type="number" name="max_lease" min="60" value="{{ form.max_lease or subnet.max_lease or 7200 }}" required>
        </label>
        <label>域名（可选）
            <input type="text" name="domain_name" value="{{ form.domain_name or subnet.domain_name }}"
                   placeholder="lan.local">
        </label>
        <label class="checkbox-row">
            <input type="checkbox" name="authoritative"
                   {% if form.authoritative is defined and form.authoritative %}checked{% endif %}
                   {% if not form and subnet.authoritative %}checked{% endif %}>
            authoritative（本网络唯一 DHCP 服务器）
        </label>
    </div>
    <div class="form-actions">
        <button type="submit" class="btn btn-primary">保存并应用</button>
        <a href="{{ url_for('subnet_list') }}" class="btn btn-muted">取消</a>
    </div>
    <p class="muted small">保存将自动校验语法并 reload 服务。</p>
</form>
{% endblock %}