feat(Dashboard): enhance PingServiceCard with expandable view and sparkline for historical ping data

frontend/src/Dashboard.jsx

@@ -1,4 +1,4 @@
-import { useState, useEffect } from 'react';
+import { useState, useEffect, useRef } from 'react';
 import { Link } from 'react-router-dom';
 import api from './lib/api.js';
 import { formatDateTime } from './lib/datetime.js';
@@ -16,6 +16,8 @@ import {
   IconDownload,
   IconCreditCard,
   IconSearch,
+  IconChevronDown,
+  IconChevronUp,
 } from '@tabler/icons-react';
 import { getIconById } from './lib/brandIcons.js';
 import PageHeader from './components/PageHeader.jsx';
@@ -23,6 +25,7 @@ import TopNStats from './components/TopNStats.jsx';
 import TrendIndicator from './components/TrendIndicator.jsx';
 import LastSaved from './components/LastSaved.jsx';
 import Tooltip from './components/Tooltip.jsx';
+import Sparkline from './components/Sparkline.jsx';
 
 function StatCard({ icon: Icon, color, value, title, subtitle, to, trend, previousValue }) {
   return (
@@ -75,24 +78,94 @@ function MetricCard({ title, value, icon: Icon, color, description }) {
   );
 }
 
-/** Карточка сервиса с иконкой и пингом (config из API: id, name, host, icon, color) */
-function PingServiceCard({ config, ms, loading }) {
+const PING_HISTORY_MAX = 30;
+
+/** Обёртка для Sparkline по ширине контейнера */
+function PingSparklineWrap({ history, color }) {
+  const wrapRef = useRef(null);
+  const [width, setWidth] = useState(280);
+  useEffect(() => {
+    const el = wrapRef.current;
+    if (!el) return;
+    const ro = new ResizeObserver(() => setWidth(el.offsetWidth || 280));
+    ro.observe(el);
+    setWidth(el.offsetWidth || 280);
+    return () => ro.disconnect();
+  }, []);
+  return (
+    <div ref={wrapRef} className="mt-2" style={{ height: 56, width: '100%', minWidth: 0 }}>
+      <Sparkline
+        data={history}
+        width={width}
+        height={56}
+        strokeColor={color ? `var(--tblr-${color})` : 'var(--tblr-primary)'}
+        fillColor={color ? `var(--tblr-${color})` : 'var(--tblr-primary)'}
+        strokeWidth={2}
+      />
+    </div>
+  );
+}
+
+/** Разворачиваемая карточка сервиса: свёрнутый вид — иконка и пинг; развёрнутый — тренд и мини-график (как Revenue в Tabler) */
+function PingServiceCard({ config, ms, previousMs, history = [], loading, isExpanded, onToggle }) {
   const { name, host, color } = config;
   const { Icon } = getIconById(config.icon);
   const value = loading ? '...' : (ms != null ? `${ms} мс` : '—');
+  const currentNum = typeof ms === 'number' ? ms : null;
+
   return (
-    <div className="card h-100 position-relative">
-      <div className="card-body d-flex align-items-center">
-        <span className={`avatar avatar-lg me-3 bg-${color}-lt text-${color} border-0 rounded`}>
-          <Icon size={28} stroke={1.5} />
-        </span>
-        <div className="flex-grow-1 min-w-0">
-          <div className="h4 mb-0 fw-bold">{value}</div>
-          <div className="text-muted small text-truncate" title={`${name} (${host})`}>
-            {name} <span className="opacity-75">({host})</span>
+    <div
+      className={`card h-100 position-relative ${isExpanded ? '' : 'cursor-pointer'}`}
+      style={isExpanded ? { minHeight: '200px' } : undefined}
+      role="button"
+      tabIndex={0}
+      onClick={onToggle}
+      onKeyDown={(e) => (e.key === 'Enter' || e.key === ' ') && onToggle()}
+      aria-expanded={isExpanded}
+      aria-label={isExpanded ? `Свернуть ${name}` : `Развернуть ${name}, пинг ${value}`}
+    >
+      {!isExpanded ? (
+        <div className="card-body d-flex align-items-center">
+          <span className={`avatar avatar-lg me-3 bg-${color}-lt text-${color} border-0 rounded`}>
+            <Icon size={28} stroke={1.5} />
+          </span>
+          <div className="flex-grow-1 min-w-0">
+            <div className="h4 mb-0 fw-bold">{value}</div>
+            <div className="text-muted small text-truncate" title={`${name} (${host})`}>
+              {name} <span className="opacity-75">({host})</span>
+            </div>
           </div>
+          <IconChevronDown size={18} className="text-muted ms-1 flex-shrink-0" />
         </div>
-      </div>
+      ) : (
+        <div className="card-body">
+          <div className="d-flex align-items-center justify-content-between mb-2">
+            <span className="text-muted text-uppercase small fw-semibold">{name}</span>
+            <span className="text-muted small d-flex align-items-center">
+              Последние замеры
+              <IconChevronUp size={14} className="ms-1" title="Свернуть" />
+            </span>
+          </div>
+          <div className="d-flex align-items-baseline flex-wrap gap-2 mb-3">
+            <div className="h3 mb-0 fw-bold">
+              {loading ? '...' : currentNum != null ? `${currentNum} мс` : '—'}
+            </div>
+            {!loading && currentNum != null && previousMs != null && (
+              <TrendIndicator
+                value={currentNum}
+                previousValue={previousMs}
+                format="percent"
+                inverse
+              />
+            )}
+          </div>
+          {history.length > 0 ? (
+            <PingSparklineWrap history={history} color={color} />
+          ) : (
+            <div className="text-muted small mt-2">Нет истории замеров. Данные накапливаются при обновлении.</div>
+          )}
+        </div>
+      )}
     </div>
   );
 }
@@ -118,6 +191,9 @@ function Dashboard() {
   const [pingServices, setPingServices] = useState(null);
   const [pingServicesConfig, setPingServicesConfig] = useState([]);
   const [pingLoading, setPingLoading] = useState(true);
+  const [previousPingServices, setPreviousPingServices] = useState(null);
+  const [pingHistory, setPingHistory] = useState(() => ({}));
+  const [expandedPingId, setExpandedPingId] = useState(null);
 
   useEffect(() => {
     async function fetchStats() {
@@ -228,20 +304,37 @@ function Dashboard() {
     return () => { cancelled = true; };
   }, []);
 
-  useEffect(() => {
-    let cancelled = false;
+  function fetchPingServices() {
     setPingLoading(true);
     api.get('/ping-services')
       .then(({ data }) => {
-        if (!cancelled) setPingServices(data || null);
+        const next = data && typeof data === 'object' ? data : null;
+        setPingServices((current) => {
+          if (current && typeof current === 'object' && Object.keys(current).length > 0) {
+            setPreviousPingServices(current);
+          }
+          return next;
+        });
+        if (next) {
+          setPingHistory((h) => {
+            const out = { ...h };
+            Object.keys(next).forEach((id) => {
+              const ms = next[id]?.ms;
+              if (typeof ms !== 'number') return;
+              const list = Array.isArray(out[id]) ? out[id] : [];
+              const nextList = [...list, ms].slice(-PING_HISTORY_MAX);
+              out[id] = nextList;
+            });
+            return out;
+          });
+        }
       })
-      .catch(() => {
-        if (!cancelled) setPingServices(null);
-      })
-      .finally(() => {
-        if (!cancelled) setPingLoading(false);
-      });
-    return () => { cancelled = true; };
+      .catch(() => setPingServices(null))
+      .finally(() => setPingLoading(false));
+  }
+
+  useEffect(() => {
+    fetchPingServices();
   }, []);
 
   if (error) {
@@ -275,13 +368,34 @@ function Dashboard() {
       />
 
       {/* Пинг до сервисов (список из настроек / Пинг сервисов) */}
+      <div className="d-flex align-items-center justify-content-between mb-2">
+        <h3 className="mb-0">Пинг сервисов</h3>
+        <Tooltip content="Обновить замеры пинга (история и тренд накапливаются)">
+          <button
+            type="button"
+            className="btn btn-outline-primary btn-sm"
+            onClick={() => fetchPingServices()}
+            disabled={pingLoading}
+          >
+            <IconRefresh className={pingLoading ? 'spin me-1' : 'me-1'} size={16} />
+            Обновить пинг
+          </button>
+        </Tooltip>
+      </div>
       <div className="row g-3 mb-4">
         {pingServicesConfig.map((config) => (
-          <div key={config.id} className="col-6 col-md-3">
+          <div
+            key={config.id}
+            className={expandedPingId === config.id ? 'col-12' : 'col-6 col-md-3'}
+          >
             <PingServiceCard
               config={config}
               ms={pingServices?.[config.id]?.ms ?? null}
+              previousMs={previousPingServices?.[config.id]?.ms ?? null}
+              history={pingHistory[config.id] || []}
               loading={pingLoading}
+              isExpanded={expandedPingId === config.id}
+              onToggle={() => setExpandedPingId((id) => (id === config.id ? null : config.id))}
             />
           </div>
         ))}