{% extends "base.html" %}
{% block title %}实时性能 - Squid Manager{% endblock %}

{% block content %}
<div class="page-header">
    <h1>📊 实时性能监控</h1>
    <div class="page-actions">
        <span class="meta-text">
            采集于 {{ summary.fetched_at }} · 来源 {{ conn.host }}:{{ conn.port }}
        </span>
        <button id="refresh-btn" class="btn btn-small btn-secondary">🔄 刷新</button>
    </div>
</div>

{% if not summary.fetched_ok %}
<div class="card" style="border-left: 4px solid #ef4444;">
    <h3 class="card-title">⚠️ 无法获取 Squid 性能数据</h3>
    <p class="meta-text">
        <strong>错误信息:</strong> {{ summary.error or "未知错误" }}
    </p>
    <p class="meta-text">
        请检查:
        <ul style="margin: 6px 0 0 18px;">
            <li><code>squidclient</code> 工具是否已安装且在 <code>PATH</code> 中 (运行 <code>which squidclient</code> 验证)</li>
            <li>Squid <code>cache_mgr</code> 管理接口是否启用 (默认端口 {{ conn.port }})</li>
            <li>主机 <code>{{ conn.host }}:{{ conn.port }}</code> 是否可以从 Web 服务器访问</li>
            <li>如启用了 <code>cachemgr_passwd</code>, 请在 <a href="{{ url_for('config_paths') }}">路径设置</a> 配置 <code>squid_mgr_password</code></li>
        </ul>
    </p>
</div>
{% endif %}

<!-- Top metric grid: 8 dense cards (4 cols × 2 rows on desktop) -->
<div class="kpi-grid" id="metric-grid">
    <div class="kpi-card kpi-blue">
        <div class="kpi-label">运行时长</div>
        <div class="kpi-value" data-field="squid_uptime_human">{{ summary.squid_uptime_human or "—" }}</div>
        <div class="kpi-meta">Squid 版本 {{ summary.squid_version or "?" }}</div>
    </div>
    <div class="kpi-card kpi-purple">
        <div class="kpi-label">CPU 时间</div>
        <div class="kpi-value" data-field="cpu_time_human">{{ summary.cpu_time_human or "—" }}</div>
        <div class="kpi-meta">累计用户态+内核态</div>
    </div>
    <div class="kpi-card kpi-cyan">
        <div class="kpi-label">最大内存占用</div>
        <div class="kpi-value" data-field="max_rss_human">{{ summary.max_rss_human or "—" }}</div>
        <div class="kpi-meta">RSS 峰值</div>
    </div>
    <div class="kpi-card kpi-orange">
        <div class="kpi-label">活跃客户端</div>
        <div class="kpi-value" data-field="current_clients">{{ summary.current_clients if summary.current_clients is not none else "—" }}</div>
        <div class="kpi-meta">正在访问缓存的 IP 数</div>
    </div>
    <div class="kpi-card kpi-green">
        <div class="kpi-label">缓存命中率</div>
        <div class="kpi-value" data-field="cache_hits_pct">
            {% if summary.cache_hits_pct is not none %}{{ '%.1f' % summary.cache_hits_pct }}%{% else %}—{% endif %}
        </div>
        <div class="kpi-meta">Hits as % of bytes sent</div>
    </div>
    <div class="kpi-card kpi-yellow">
        <div class="kpi-label">磁盘缓存</div>
        <div class="kpi-value" data-field="storage_swap_human">{{ summary.storage_swap_human or "—" }}</div>
        <div class="kpi-meta">Storage Swap size</div>
    </div>
    <div class="kpi-card kpi-pink">
        <div class="kpi-label">内存缓存</div>
        <div class="kpi-value" data-field="storage_mem_human">{{ summary.storage_mem_human or "—" }}</div>
        <div class="kpi-meta">Storage Mem size</div>
    </div>
    <div class="kpi-card kpi-red">
        <div class="kpi-label">5min 请求率</div>
        <div class="kpi-value" data-field="request_rate_5min">
            {% if summary.request_rate_5min is not none %}{{ '%.1f' % summary.request_rate_5min }} req/s{% else %}—{% endif %}
        </div>
        <div class="kpi-meta">
            流量:
            <span data-field="byte_rate_5min_human">
                {% if summary.byte_rate_5min is not none %}{{ format_bytes(summary.byte_rate_5min) }}/s{% else %}—{% endif %}
            </span>
        </div>
    </div>
</div>

<!-- Status bar -->
<div class="card" style="margin-top: 16px;">
    <h3 class="card-title">🛰️ Squid 状态</h3>
    <div class="grid-2">
        <div>
            <table class="data-table small">
                <tbody>
                    <tr>
                        <th>启动时间</th>
                        <td data-field="start_time">{{ summary.start_time or "—" }}</td>
                    </tr>
                    <tr>
                        <th>当前时间</th>
                        <td data-field="current_time">{{ summary.current_time or "—" }}</td>
                    </tr>
                    <tr>
                        <th>作者信息</th>
                        <td>{{ summary.squid_author or "—" }}</td>
                    </tr>
                </tbody>
            </table>
        </div>
        <div>
            <table class="data-table small">
                <tbody>
                    <tr>
                        <th>采集状态</th>
                        <td>
                            {% if summary.fetched_ok %}
                                <span class="badge badge-green">✅ 成功</span>
                            {% else %}
                                <span class="badge badge-red">❌ 失败</span>
                            {% endif %}
                        </td>
                    </tr>
                    <tr>
                        <th>采集时间</th>
                        <td data-field="fetched_at">{{ summary.fetched_at }}</td>
                    </tr>
                    <tr>
                        <th>采集源</th>
                        <td><code>{{ conn.host }}:{{ conn.port }}</code></td>
                    </tr>
                </tbody>
            </table>
        </div>
    </div>
</div>

<!-- Fold-out raw output -->
<div class="card" style="margin-top: 16px;">
    <h3 class="card-title">🔍 原始输出 (可折叠)</h3>
    <details>
        <summary>查看 mgr:info 完整文本</summary>
        <pre id="raw-info" style="max-height: 400px; overflow: auto; background: var(--bg); padding: 12px; border-radius: 6px; font-size: 12px;">{{ summary.raw_info or summary.error or "无数据" }}</pre>
    </details>
    <details style="margin-top: 12px;">
        <summary>查看 mgr:5min 完整文本 (懒加载)</summary>
        <div id="raw-5min" data-loaded="false" class="meta-text" style="padding: 8px 0;">点击展开后按需加载...</div>
    </details>
    <details style="margin-top: 12px;">
        <summary>查看 mgr:counters 完整文本 (懒加载)</summary>
        <div id="raw-counters" data-loaded="false" class="meta-text" style="padding: 8px 0;">点击展开后按需加载...</div>
    </details>
</div>
{% endblock %}

{% block scripts %}
<script>
(function() {
    const btn = document.getElementById('refresh-btn');
    const grid = document.getElementById('metric-grid');
    if (!btn || !grid) return;

    // ---- Auto-refresh: 30s if user hasn't disabled it ----
    let autoTimer = null;
    function scheduleAuto() {
        if (autoTimer) clearInterval(autoTimer);
        autoTimer = setInterval(refreshNow, 30000);
    }

    function fmtBytes(b) {
        if (b === null || b === undefined) return '—';
        const u = ['B', 'KB', 'MB', 'GB', 'TB'];
        let i = 0;
        while (b >= 1024 && i < u.length - 1) { b /= 1024; i++; }
        return b.toFixed(b >= 100 ? 0 : (b >= 10 ? 1 : 2)) + ' ' + u[i];
    }

    function applySummary(s) {
        // Update each card by data-field
        const fields = {
            squid_uptime_human: s.squid_uptime_human || '—',
            cpu_time_human: s.cpu_time_human || '—',
            max_rss_human: s.max_rss_human || '—',
            current_clients: (s.current_clients === null || s.current_clients === undefined) ? '—' : s.current_clients,
            cache_hits_pct: (s.cache_hits_pct === null || s.cache_hits_pct === undefined) ? '—' : s.cache_hits_pct.toFixed(1) + '%',
            storage_swap_human: s.storage_swap_human || '—',
            storage_mem_human: s.storage_mem_human || '—',
            request_rate_5min: (s.request_rate_5min === null || s.request_rate_5min === undefined) ? '—' : s.request_rate_5min.toFixed(1) + ' req/s',
            byte_rate_5min_human: (s.byte_rate_5min === null || s.byte_rate_5min === undefined) ? '—' : fmtBytes(s.byte_rate_5min) + '/s',
            start_time: s.start_time || '—',
            current_time: s.current_time || '—',
            fetched_at: s.fetched_at || '—',
        };
        for (const [k, v] of Object.entries(fields)) {
            const el = document.querySelector('[data-field="' + k + '"]');
            if (el) el.textContent = v;
        }
        // Visual feedback on success
        btn.textContent = '✅ ' + (s.fetched_ok ? '已刷新' : '刷新失败');
        btn.classList.toggle('btn-primary', !!s.fetched_ok);
        setTimeout(() => { btn.textContent = '🔄 刷新'; btn.classList.remove('btn-primary'); }, 1500);
    }

    async function refreshNow() {
        btn.disabled = true;
        btn.textContent = '⏳ 刷新中…';
        try {
            const resp = await fetch('{{ url_for("performance_refresh") }}', {
                method: 'POST',
                headers: {'X-Requested-With': 'XMLHttpRequest'},
            });
            if (!resp.ok) throw new Error('HTTP ' + resp.status);
            const data = await resp.json();
            applySummary(data);
        } catch (err) {
            btn.textContent = '❌ ' + (err.message || '失败');
            setTimeout(() => { btn.textContent = '🔄 刷新'; }, 2000);
        } finally {
            btn.disabled = false;
        }
    }

    btn.addEventListener('click', refreshNow);
    scheduleAuto();

    // ---- Lazy load raw sections when their <details> is opened ----
    document.querySelectorAll('details').forEach(d => {
        const target = d.querySelector('[data-loaded="false"]');
        if (!target) return;
        d.addEventListener('toggle', async () => {
            if (!d.open || target.dataset.loaded === 'true') return;
            target.dataset.loaded = 'loading';
            target.textContent = '加载中...';
            const section = target.id.replace('raw-', '');
            try {
                const resp = await fetch('{{ url_for("performance_raw", section="PLACEHOLDER") }}'.replace('PLACEHOLDER', section));
                const data = await resp.json();
                target.dataset.loaded = 'true';
                target.textContent = data.raw || data.error || '无数据';
                target.style.whiteSpace = 'pre-wrap';
                target.style.fontFamily = 'monospace';
                target.style.fontSize = '12px';
            } catch (err) {
                target.dataset.loaded = 'true';
                target.textContent = '加载失败: ' + err.message;
            }
        });
    });
})();
</script>
{% endblock %}