RocketChat/Rocket.Chat

import { useTranslation } from '@rocket.chat/ui-contexts';
import React, { useRef, useEffect } from 'react';

import { drawDoughnutChart } from '../../../../../app/livechat/client/lib/chartHandler';
import { AsyncStatePhase } from '../../../../hooks/useAsyncState';
import { useEndpointData } from '../../../../hooks/useEndpointData';
import Chart from './Chart';
import { useUpdateChartData } from './useUpdateChartData';

const labels = ['Available', 'Away', 'Busy', 'Offline'];

const initialData = {
    available: 0,
    away: 0,
    busy: 0,
    offline: 0,
};

const init = (canvas, context, t) =>
    drawDoughnutChart(
        canvas,
        t('Agents'),
        context,
        labels.map((l) => t(l)),
        Object.values(initialData),
    );

const AgentStatusChart = ({ params, reloadRef, ...props }) => {
    const t = useTranslation();

    const canvas = useRef();
    const context = useRef();

    const updateChartData = useUpdateChartData({
        context,
        canvas,
        t,
        init,
    });

    const { value: data, phase: state, reload } = useEndpointData('/v1/livechat/analytics/dashboards/charts/agents-status', { params });

    reloadRef.current.agentStatusChart = reload;

    const { offline = 0, available = 0, away = 0, busy = 0 } = data ?? initialData;

    useEffect(() => {
        const initChart = async () => {
            context.current = await init(canvas.current, context.current, t);
        };
        initChart();
    }, [t]);

    useEffect(() => {
        if (state === AsyncStatePhase.RESOLVED && context.current) {
            updateChartData(t('Offline'), [offline]);
            updateChartData(t('Available'), [available]);
            updateChartData(t('Away'), [away]);
            updateChartData(t('Busy'), [busy]);
        }
    }, [available, away, busy, offline, state, t, updateChartData]);

    return <Chart canvasRef={canvas} {...props} />;
};

export default AgentStatusChart;