transform preset date ranges (the morning of yesterday) into timestamp dates

getDateRangeFromPresets.ts

import { subDays, format, parse, startOfWeek, addWeeks, startOfMonth, subMonths, subWeeks, addMonths, addDays } from "date-fns";

import { ReportFields } from "../WindowDeviceReport.asset";

const getDateRangeFromPresets = function ({ range, timeRange, startTime: customStartTime, endTime: customEndTime, customRange }: ReportFields) {
    const rangeToOffset = {
        today: [new Date(), new Date()],
        yesterday: [subDays(new Date(), 1), subDays(new Date(), 1)], 
        two_days_ago: [subDays(new Date(), 2), subDays(new Date(), 2)],
        three_days_ago: [subDays(new Date(), 3), subDays(new Date(), 3)],
        week: [startOfWeek(new Date(), { weekStartsOn: 1 }), startOfWeek(addWeeks(new Date(), 1), { weekStartsOn: 1 })],
        week_ago: [startOfWeek(subWeeks(new Date(), 1), { weekStartsOn: 1 }), startOfWeek(new Date())],
        month: [startOfMonth(new Date()), startOfMonth(addMonths(new Date(), 1))],
        month_ago: [startOfMonth(subMonths(new Date(), 1)), startOfMonth(new Date())]
    } as Record<string, [Date, Date]>;

    const timeRangeToOffset = {
        full_day: ["00:00", "23:59"],
        morning: ["06:00", "12:00"],
        afternoon: ["12:00", "18:00"],
        night: ["18:00", "06:00"],
    } as Record<string, [string, string]>;

    let [startDate, endDate] = rangeToOffset[range] || [];
    let [startTime, endTime] = timeRangeToOffset[timeRange] || [];

    if (range === "custom") {
        startDate = new Date(customRange.start);
        endDate = new Date(customRange.end);
    }

    if (timeRange === "custom") {
        startTime = customStartTime;
        endTime = customEndTime;
    }

    const formattedStartDate = format(startDate, "yyyy-MM-dd");
    const formattedEndDate = format(endDate, "yyyy-MM-dd");

    const start = parse(`${formattedStartDate} ${startTime}`, "yyyy-MM-dd HH:mm", new Date()).getTime();
    let end = parse(`${formattedEndDate} ${endTime}`, "yyyy-MM-dd HH:mm", new Date()).getTime();
    if (end <= start) {
        const gapEnd = format(addDays(start, 1), "yyyy-MM-dd");
        end = parse(`${gapEnd} ${endTime}`, "yyyy-MM-dd HH:mm", new Date()).getTime();
    }
    return { start, end };
};

export default getDateRangeFromPresets;