RocketChat/Rocket.Chat

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

import { drawLineChart } 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 initialData = {
    departments: {},
};

const init = (canvas, context, t) =>
    drawLineChart(canvas, context, [t('Open'), t('Closed')], [], [[], []], {
        legends: true,
        anim: true,
        smallTicks: true,
    });

const ChatsPerDepartmentChart = ({ 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/chats-per-department', { params });

    reloadRef.current.chatsPerDepartmentChart = reload;

    const chartData = data ?? initialData;

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

    useEffect(() => {
        if (state === AsyncStatePhase.RESOLVED) {
            if (chartData && chartData.success) {
                delete chartData.success;
                Object.entries(chartData).forEach(([name, value]) => {
                    updateChartData(name, [value.open, value.closed]);
                });
            }
        }
    }, [chartData, state, t, updateChartData]);

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

export default ChatsPerDepartmentChart;