first commit

frontend/components/TrafficChart.tsx

@@ -0,0 +1,31 @@
+"use client";
+
+import { LineChart, Line, XAxis, YAxis, Tooltip, ResponsiveContainer, Legend } from "recharts";
+
+type Point = { t: string } & Record<string, number>;
+
+function fmtBps(v: number) {
+  const units = ["bps","Kbps","Mbps","Gbps"];
+  let val = v, i = 0;
+  while (val >= 1000 && i < units.length-1) { val /= 1000; i++; }
+  const digits = val < 10 && i > 0 ? 2 : 0;
+  return `${val.toFixed(digits)} ${units[i]}`;
+}
+
+export default function TrafficChart({ data, series }: { data: Point[]; series: string[] }) {
+  return (
+    <div className="h-64 w-full">
+      <ResponsiveContainer width="100%" height="100%">
+        <LineChart data={data}>
+          <XAxis dataKey="t" tick={{ fontSize: 12 }} />
+          <YAxis tick={{ fontSize: 12 }} tickFormatter={(v)=>fmtBps(Number(v))} />
+          <Tooltip formatter={(v:any)=>fmtBps(Number(v))} />
+          <Legend />
+          {series.map((s) => (
+            <Line key={s} type="monotone" dataKey={s} dot={false} strokeWidth={2} />
+          ))}
+        </LineChart>
+      </ResponsiveContainer>
+    </div>
+  );
+}