{% extends "base.html" %}
{% block title %}多实例管理 - Squid Manager{% endblock %}
{% block content %}
<div class="page-header">
    <h1>🖥️ 多实例管理</h1>
    <div class="page-actions">
        <button onclick="document.getElementById('add-form').style.display='block'" class="btn btn-primary btn-small">➕ 添加实例</button>
    </div>
</div>

<p class="meta-text">
    在数据库中保存多个 Squid 实例。切换"当前活动实例"后，所有配置、日志、服务控制页面都会基于该实例的路径与服务名。<br>
    当前活动实例: <span class="badge badge-blue">{{ active_instance_name }}</span>
    {% if active %}<span class="meta-text">(ID #{{ active.id }})</span>{% endif %}
</p>

{# -------- add new instance form (hidden by default) -------- #}
<div class="card" id="add-form" style="display:none;">
    <h3 class="card-title">添加新实例</h3>
    <form method="post" action="{{ url_for('instances_add') }}" class="inline-form">
        <input type="hidden" name="_csrf" value="{{ csrf_token() }}">
        <div class="filter-grid">
            <div class="form-group">
                <label>名称 <span class="hint">(唯一)</span></label>
                <input type="text" name="name" class="form-input" required maxlength="80" placeholder="例如: prod-edge-01">
            </div>
            <div class="form-group">
                <label>描述</label>
                <input type="text" name="description" class="form-input" maxlength="200" placeholder="可选">
            </div>
            <div class="form-group">
                <label>本机实例</label>
                <select name="is_local" class="form-input">
                    <option value="1" selected>是 (本地)</option>
                    <option value="0">否 (远程 SSH)</option>
                </select>
            </div>
        </div>

        <div class="config-section">
            <h3 class="config-section-title">🦑 Squid 路径</h3>
            <div class="filter-grid">
                <div class="form-group">
                    <label>squid.conf 路径</label>
                    <input type="text" name="squid_conf_path" class="form-input" value="/etc/squid/squid.conf">
                </div>
                <div class="form-group">
                    <label>access.log 路径</label>
                    <input type="text" name="access_log_path" class="form-input" value="/var/log/squid/access.log">
                </div>
                <div class="form-group">
                    <label>cache.log 路径</label>
                    <input type="text" name="cache_log_path" class="form-input" value="/var/log/squid/cache.log">
                </div>
                <div class="form-group">
                    <label>squid 二进制</label>
                    <input type="text" name="squid_binary" class="form-input" value="squid">
                </div>
                <div class="form-group">
                    <label>systemctl</label>
                    <input type="text" name="systemctl" class="form-input" value="systemctl">
                </div>
                <div class="form-group">
                    <label>Systemd 服务名</label>
                    <input type="text" name="squid_service" class="form-input" value="squid">
                </div>
            </div>
        </div>

        <div class="config-section">
            <h3 class="config-section-title">🔐 SSH (仅远程实例)</h3>
            <div class="filter-grid">
                <div class="form-group">
                    <label>SSH 主机</label>
                    <input type="text" name="ssh_host" class="form-input" placeholder="例如: 10.0.0.5">
                </div>
                <div class="form-group">
                    <label>SSH 用户</label>
                    <input type="text" name="ssh_user" class="form-input" placeholder="root">
                </div>
                <div class="form-group">
                    <label>SSH 端口</label>
                    <input type="number" name="ssh_port" class="form-input" value="22" min="1" max="65535">
                </div>
                <div class="form-group">
                    <label>SSH 私钥路径</label>
                    <input type="text" name="ssh_key_path" class="form-input" placeholder="/root/.ssh/id_rsa">
                </div>
            </div>
        </div>

        <div class="form-actions">
            <label style="display:inline-flex; align-items:center; gap:6px; margin-right:auto;">
                <input type="checkbox" name="is_active" value="1">
                添加后立即激活
            </label>
            <button type="button" onclick="document.getElementById('add-form').style.display='none'" class="btn btn-secondary btn-small">取消</button>
            <button type="submit" class="btn btn-primary btn-small">💾 添加</button>
        </div>
    </form>
</div>

{# -------- existing instances table -------- #}
<div class="card">
    <h3 class="card-title">📋 已配置实例 ({{ instances|length }})</h3>
    {% if not instances %}
    <p class="card-empty">尚未配置任何实例。点击右上角"添加实例"开始。</p>
    {% else %}
    <div class="table-scroll">
    <form method="post" action="{{ url_for('instances_save') }}">
        <input type="hidden" name="_csrf" value="{{ csrf_token() }}">
        <table class="data-table">
            <thead>
                <tr>
                    <th>名称</th>
                    <th>描述</th>
                    <th>主机</th>
                    <th>配置文件</th>
                    <th>access.log</th>
                    <th>状态</th>
                    <th>操作</th>
                </tr>
            </thead>
            <tbody>
            {% for inst in instances %}
                {% set is_current = (active and active.id == inst.id) %}
                <tr {% if is_current %}style="background: rgba(59,130,246,0.08);"{% endif %}>
                    <td>
                        <input type="text" name="name_{{ inst.id }}" value="{{ inst.name }}" class="form-input" required maxlength="80">
                    </td>
                    <td>
                        <input type="text" name="description_{{ inst.id }}" value="{{ inst.description or '' }}" class="form-input" maxlength="200" placeholder="(无)">
                    </td>
                    <td>
                        {% if inst.is_local %}
                            <span class="badge badge-blue">本地</span>
                        {% else %}
                            <code>{{ inst.ssh_host or '?' }}:{{ inst.ssh_port }}</code>
                            <span class="meta-text">({{ inst.ssh_user or '?' }})</span>
                        {% endif %}
                    </td>
                    <td><code class="meta-text">{{ inst.squid_conf_path }}</code></td>
                    <td><code class="meta-text">{{ inst.access_log_path }}</code></td>
                    <td>
                        {% if is_current %}
                            <span class="badge badge-green">★ 当前活动</span>
                        {% elif inst.is_active %}
                            <span class="badge badge-yellow">默认</span>
                        {% else %}
                            <span class="meta-text">—</span>
                        {% endif %}
                    </td>
                    <td style="white-space:nowrap;">
                        {% if not is_current %}
                        <form method="post" action="{{ url_for('instances_activate', inst_id=inst.id) }}" style="display:inline;">
                            <input type="hidden" name="_csrf" value="{{ csrf_token() }}">
                            <input type="hidden" name="next" value="{{ request.path }}">
                            <button type="submit" class="btn btn-primary btn-small">▶ 激活</button>
                        </form>
                        {% endif %}
                        <a href="{{ url_for('instances_test', inst_id=inst.id) }}" class="btn btn-secondary btn-small" target="_blank">🔍 测试</a>
                        <form method="post" action="{{ url_for('instances_delete') }}" style="display:inline;" onsubmit="return confirm('确定要删除实例 {{ inst.name }} 吗?');">
                            <input type="hidden" name="_csrf" value="{{ csrf_token() }}">
                            <input type="hidden" name="id" value="{{ inst.id }}">
                            <button type="submit" class="btn btn-danger btn-small">🗑</button>
                        </form>
                        {# hidden checkbox used by /instances/save to set the active row #}
                        {% if not is_current %}
                        <input type="checkbox" name="is_active_{{ inst.id }}" value="1" style="display:none;">
                        {% endif %}
                    </td>
                </tr>
            {% endfor %}
            </tbody>
        </table>
        <div class="form-actions" style="margin-top: 12px;">
            <span class="meta-text">提示: 表格中可编辑名称/描述/路径。修改后点击"保存所有修改"。</span>
            <button type="submit" class="btn btn-primary">💾 保存所有修改</button>
        </div>
    </form>
    </div>
    {% endif %}
</div>

<div class="card">
    <h3 class="card-title">ℹ️ 说明</h3>
    <ul>
        <li>当前活动实例的路径/服务名会覆盖 <code>/config/paths</code> 中的全局设置</li>
        <li>切换实例后，所有现有页面 (config/*、logs、service) 自动基于新实例的路径</li>
        <li>应用级参数 (日志解析上限、缓存秒数等) 仍然是全局的，不会因实例切换而变化</li>
        <li>远程实例的 SSH 凭据当前仅记录，配置读写仍需通过本地文件系统或 SSHFS 挂载</li>
        <li>"测试"按钮检查 conf_path 是否可读、access/cache log 是否存在</li>
    </ul>
</div>
{% endblock %}