feat: video monitor page with HLS preview

internal/web/ui.go

@@ -661,6 +661,7 @@ func (u *UI) Routes() (chi.Router, error) {
 	r.Post("/resources/sync", u.actionResourceSync)
 	r.Get("/diagnostics", u.pageDiagnostics)
 	r.Get("/alarms", u.pageAlarms)
+	r.Get("/monitor", u.pageMonitor)
 	r.Get("/recognition", u.pageRecognition)
 	r.Get("/logs", u.pageLogs)
 
@@ -3863,3 +3864,8 @@ func (u *UI) actionDeviceFaceGalleryReload(w http.ResponseWriter, r *http.Reques
 	}
 	u.render(w, r, "config_ui", data)
 }
+
+func (u *UI) pageMonitor(w http.ResponseWriter, r *http.Request) {
+	u.ensureDevicesLoaded()
+	u.render(w, r, "monitor", PageData{Title: "视频监控", Devices: u.registry.GetDevices()})
+}

internal/web/ui/templates/layout.html

@@ -36,6 +36,7 @@
             <a class="nav-subitem" href="/ui/models"><span class="nav-icon nav-subicon">{{icon "assets"}}</span><span>模型管理</span></a>
             <a class="nav-subitem" href="/ui/resources"><span class="nav-icon nav-subicon">{{icon "template"}}</span><span>资源管理</span></a>
 			<a class="nav-subitem" href="/ui/alarms"><span class="nav-icon nav-subicon">{{icon "bell"}}</span><span>告警中心</span></a>
+t		<a class="nav-subitem" href="/ui/monitor"><span class="nav-icon nav-subicon">{{icon "devices"}}</span><span>视频监控</span></a>
             <a class="nav-subitem" href="/ui/diagnostics"><span class="nav-icon nav-subicon">{{icon "logs"}}</span><span>日志审计</span></a>
             <a class="nav-subitem" href="/ui/system"><span class="nav-icon nav-subicon">{{icon "heartbeat"}}</span><span>系统状态</span></a>
           </div>

internal/web/ui/templates/monitor.html

@@ -0,0 +1,69 @@
+{{define "monitor"}}
+<div class="card">
+  <div class="section-title">
+    <div>
+      <h2 class="title-with-icon">{{icon "devices"}}<span>视频监控</span></h2>
+      <div class="form-hint">从设备拉取通道列表，点击通道查看实时画面。</div>
+    </div>
+    <div class="actions compact">
+      <button class="btn ghost" type="button" id="btn-load">加载通道</button>
+    </div>
+  </div>
+</div>
+
+<div class="detail-grid" id="channels-grid" style="grid-template-columns:repeat(2,minmax(0,1fr))">
+  <div class="card muted" style="grid-column:1/-1;text-align:center">请先选择在线设备，点击"加载通道"。</div>
+</div>
+
+<script>
+(function() {
+  var grid = document.getElementById("channels-grid");
+
+  function loadChannels(deviceId, deviceIP, agentPort) {
+    var url = "http://" + deviceIP + ":" + agentPort + "/v1/preview/channels";
+    grid.innerHTML = '<div class="card muted" style="grid-column:1/-1;text-align:center">加载通道中…</div>';
+    fetch("http://" + deviceIP + ":" + agentPort + "/v1/preview/channels")
+      .then(function(r) { return r.json(); })
+      .then(function(data) {
+        var chs = data.channels || [];
+        if (chs.length === 0) {
+          grid.innerHTML = '<div class="card muted" style="grid-column:1/-1;text-align:center">该设备没有可预览的通道。</div>';
+          return;
+        }
+        var cols = chs.length === 1 ? 1 : 2;
+        grid.style.gridTemplateColumns = "repeat(" + cols + ",minmax(0,1fr))";
+        var html = "";
+        chs.forEach(function(ch) {
+          html += '<div class="card"><h3>' + esc(ch.name) + '</h3>';
+          if (ch.hls_url) {
+            html += '<video controls autoplay muted style="width:100%;max-height:400px;background:#000" src="' + esc(ch.hls_url) + '"></video>';
+            html += '<div class="actions" style="margin-top:8px"><a class="btn ghost" href="' + esc(ch.hls_url) + '" target="_blank">新窗口打开</a></div>';
+          } else {
+            html += '<div class="muted">无预览地址</div>';
+          }
+          html += '</div>';
+        });
+        grid.innerHTML = html;
+      })
+      .catch(function() {
+        grid.innerHTML = '<div class="card muted" style="grid-column:1/-1;text-align:center">无法连接设备，请确认设备在线。</div>';
+      });
+  }
+
+  function esc(s) { return (s||"").replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;"); }
+
+  document.getElementById("btn-load").addEventListener("click", function() {
+    grid.innerHTML = '<div class="card muted" style="grid-column:1/-1;text-align:center">请从列表中选择设备…</div>';
+    // Create device selector overlay
+    var html = '<table><thead><tr><th>设备</th><th>地址</th><th>操作</th></tr></thead><tbody>';
+    {{range .Devices}}
+    {{if .Online}}
+    html += '<tr><td>{{.DisplayName}}</td><td class="mono">{{.IP}}:{{.AgentPort}}</td><td><button class="btn ghost" onclick="loadChannels(\'{{.DeviceID}}\',\'{{.IP}}\',{{.AgentPort}})">加载</button></td></tr>';
+    {{end}}
+    {{end}}
+    html += '</tbody></table>';
+    grid.innerHTML = '<div class="card" style="grid-column:1/-1">' + html + '</div>';
+  });
+})();
+</script>
+{{end}}