50 lines
1.6 KiB
TypeScript
50 lines
1.6 KiB
TypeScript
import { format, addHours } from "date-fns";
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import { TZDate } from "@date-fns/tz";
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import { UTCDate, utc } from "@date-fns/utc";
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import spacetime from "spacetime";
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export function dateFromInput(input: { dateQuery: string, timezone: string }) {
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let t: string;
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try {
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t = format(new UTCDate(input.dateQuery), "yyyy-MM-dd", { in: utc });
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}
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catch (e) {
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const now_here = spacetime.now(input.timezone);
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switch (input.dateQuery) {
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case "today":
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t = now_here.format("yyyy-MM-dd");
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break;
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case "yesterday":
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t = now_here.subtract(1, "day").format("yyyy-MM-dd");
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break;
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case "tomorrow":
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t = now_here.add(1, "day").format("yyyy-MM-dd");
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break;
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default:
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throw new Error("Invalid dateQuery");
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}
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}
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// console.log(`dateFromInput(${input.dateQuery}, ${input.timezone}) = ${t}`);
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return t;
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}
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function generateHour(d, t) {
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const dt: TZDate = addHours(d, t);
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console.log(dt);
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return {
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date: format(dt, 'yyyy-MM-dd'),
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time: parseInt(format(dt, 'H')),
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};
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}
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export function hoursListInUTC(input: { dateQuery: string, timezone: string }) {
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const localMidnight = spacetime(input.dateQuery, input.timezone).startOf("day");
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return Array.from({ length: 24 }).map((_, i) => {
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const utcTime = localMidnight.goto("UTC").add(i, "hours");
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return {
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time: utcTime.hour(),
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date: utcTime.format("iso-short"),
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};
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});
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}
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