All files / src/components/LineGraph index.tsx

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import React, { memo, useCallback, useMemo } from "react";
import {
  Chart as ChartJS,
  CategoryScale,
  LinearScale,
  PointElement,
  LineElement,
  Title,
  Tooltip,
  Legend,
  TimeScale,
  Color,
} from "chart.js";
import { Line } from "react-chartjs-2";
import { isMobile } from "@utils/index";
import { lineChartOptions } from "@utils/chartsOptions";
import { Box, Skeleton } from "@mui/material";
import "chartjs-adapter-moment";
import { LineGraphProps } from "./types";
import MouseLinePlugin from "./plugins/MouseLinePlugin";
import FadeUpWrapper from "@components/animation/FadeUpWrapper";
import moment from "moment";
import EmptyChart from "@components/charts/EmptyStates/EmptyChart";
import { useFormatDateInTimezone } from "@utils/date.helpers";
import { startOfDay } from "date-fns";
 
ChartJS.register(
  CategoryScale,
  LinearScale,
  TimeScale,
  PointElement,
  LineElement,
  Title,
  Tooltip,
  Legend,
);
 
function LineGraph({
  renderDataSets,
  data,
  timeConfig,
  isLoading,
  useTimezone,
}: LineGraphProps) {
  const [hidden, setHidden] = React.useState<any>({});
  const numberOfDatasets = data.datasets.length;
  const { currentTimezone } = useFormatDateInTimezone();
  const toggleDataset = useCallback(
    (index: any) => {
      const hiddenDatesets = Object.values(hidden).filter((el) => !!el);
      if (hiddenDatesets.length === numberOfDatasets - 1 && !hidden[index])
        return;
 
      setHidden({
        ...hidden,
        [index]: !hidden[index],
      });
    },
    [hidden],
  );
  const datasets = useMemo(
    () =>
      data.datasets.map((dataset, i) => ({
        ...dataset,
        hidden: hidden[i],
      })),
    [data, hidden],
  );
 
  if (isLoading) {
    return (
      <>
        {Array(11)
          .fill(null)
          .map((c, idx) => (
            <Box
              key={idx}
              width="100%"
              my="40px"
              height="1px"
              border="1px solid #E1E1DE "
            />
          ))}
        {!isMobile && (
          <Box
            alignItems="center"
            justifyContent="space-between"
            display="flex"
          >
            <Skeleton
              variant="rectangular"
              height="15px"
              width="234px"
              sx={{ borderRadius: "100px" }}
            />
            <Skeleton
              variant="rectangular"
              height="15px"
              width="234px"
              sx={{ borderRadius: "100px" }}
            />
          </Box>
        )}
      </>
    );
  }
 
  return (
    <>
      <FadeUpWrapper delay={200}>
        <Box
          sx={{
            overflowX: "auto",
            "&::-webkit-scrollbar": {
              display: "none",
            },
          }}
        >
          {datasets.length === 0 ? (
            <EmptyChart customText="No data for the specifed dates" />
          ) : (
            <Box
              borderRadius="12px"
              width="100%"
              height="100%"
              minWidth="600px"
              minHeight="292px"
            >
              <Line
                height={isMobile ? 300 : undefined}
                options={
                  {
                    ...lineChartOptions,
                    plugins: {
                      ...lineChartOptions.plugins,
                      tooltip: {
                        ...lineChartOptions.plugins.tooltip,
                        callbacks: {
                          ...lineChartOptions.plugins.tooltip.callbacks,
                          ...(useTimezone && {
                            title(tooltipItem: any) {
                              const label = tooltipItem[0]?.label;
                              const title = moment
                                .utc(startOfDay(new Date(label)))
                                .tz(currentTimezone)
                                .format("MMM DD");
                              return title;
                            },
                          }),
                        },
                      },
                    },
                    scales: {
                      ...lineChartOptions.scales,
                      x: {
                        ...lineChartOptions.scales.x,
                        time: timeConfig,
                        adapters: {
                          date: {
                            zone: "UTC",
                          },
                        },
                        ticks: {
                          ...(useTimezone && {
                            callback: (value: any) => {
                              return moment
                                .utc(value)
                                .tz(currentTimezone)
                                .format(timeConfig.displayFormats.day);
                            },
                          }),
                          ...lineChartOptions.scales.x.ticks,
                          ...(timeConfig.displayFormats.day === "ddd" && {
                            callback: (
                              value: any,
                              index: number,
                              values: any[],
                            ) => {
                              const isToday = isTodayInTimezone(
                                value,
                                currentTimezone,
                              );
                              // If we don't have data
                              if (data.datasets.length === 0) {
                                if (index === values.length - 1) {
                                  // If it's the last tick, show "Today"
                                  return "Today";
                                } else if (index === 0) {
                                  // If it's the first tick, show the date 7 days ago
                                  return moment
                                    .tz(currentTimezone)
                                    .subtract(7, "days")
                                    .format("D MMMM");
                                }
                              }
                              return isToday
                                ? "Today"
                                : moment
                                    .utc(value)
                                    .tz(currentTimezone)
                                    .format("ddd");
                            },
                            color: (context: any): Color => {
                              const value = context.tick.value;
                              const isToday = isTodayInTimezone(
                                value,
                                currentTimezone,
                              );
                              return isToday
                                ? ("#326EC5" as Color)
                                : ("#8F8F8F" as Color);
                            },
                          }),
                        } as any,
                      },
                    } as any,
                  } as any
                }
                data={{ ...data, datasets }}
                plugins={[MouseLinePlugin]}
              />
            </Box>
          )}
        </Box>
      </FadeUpWrapper>{" "}
      <FadeUpWrapper delay={250}>
        <> {renderDataSets && renderDataSets(datasets, toggleDataset)}</>
      </FadeUpWrapper>
    </>
  );
}
 
export default memo(LineGraph);
 
const isTodayInTimezone = (value: number, timezone: string) => {
  const todayInTimezone = moment().tz(timezone);
  const valueInTimezone = moment(value).tz(timezone);
  return valueInTimezone.isSame(todayInTimezone, "day");
};