homepage/src/widgets/glances/metrics/net.jsx

import dynamic from "next/dynamic";
import { useState, useEffect } from "react";
import { useTranslation } from "next-i18next";

import Error from "../components/error";
import Container from "../components/container";
import Block from "../components/block";

import useWidgetAPI from "utils/proxy/use-widget-api";

const ChartDual = dynamic(() => import("../components/chart_dual"), { ssr: false });

const pointsLimit = 15;

export default function Component({ service }) {
  const { t } = useTranslation();
  const { widget } = service;
  const [, interfaceName] = widget.metric.split(':');

  const [dataPoints, setDataPoints] = useState(new Array(pointsLimit).fill({ value: 0 }, 0, pointsLimit));

  const { data, error } = useWidgetAPI(widget, 'network', {
    refreshInterval: 1000,
  });

  useEffect(() => {
    if (data) {
      const interfaceData = data.find((item) => item[item.key] === interfaceName);

      if (interfaceData) {
        setDataPoints((prevDataPoints) => {
          const newDataPoints = [...prevDataPoints, { a: interfaceData.tx, b: interfaceData.rx }];
            if (newDataPoints.length > pointsLimit) {
                newDataPoints.shift();
            }
            return newDataPoints;
        });
      }
    }
  }, [data, interfaceName]);

  if (error) {
    return <Container><Error error={error} /></Container>;
  }

  if (!data) {
    return <Container><Block position="bottom-3 left-3">-</Block></Container>;
  }

  const interfaceData = data.find((item) => item[item.key] === interfaceName);

  if (!interfaceData) {
    return <Container><Block position="bottom-3 left-3">-</Block></Container>;
  }

  return (
    <Container>
      <ChartDual
        dataPoints={dataPoints}
        label={[t("docker.tx"), t("docker.rx")]}
        formatter={(value) => t("common.byterate", {
          value,
          maximumFractionDigits: 0,
        })}
      />

      <Block position="bottom-3 left-3">
        {interfaceData && interfaceData.interface_name && (
            <div className="text-xs opacity-50">
              {interfaceData.interface_name}
            </div>
        )}

        <div className="text-xs opacity-75">
          {t("common.bitrate", {
            value: interfaceData.tx,
            maximumFractionDigits: 0,
          })} {t("docker.tx")}
        </div>
      </Block>

      <Block position="bottom-3 right-3">
        <div className="text-xs opacity-75">
          {t("common.bitrate", {
            value: interfaceData.rx,
            maximumFractionDigits: 0,
          })} {t("docker.rx")}
        </div>
      </Block>
    </Container>
  );
}