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import { Temporal } from "../../deps/temporal.ts";
/** * Returns the date of the git commit that created or modified the file. * Thanks to https://github.com/11ty/eleventy/blob/8dd2a1012de92c5ee1eab7c37e6bf1b36183927e/src/Util/DateGitLastUpdated.js */export function getGitDate(  type: "created" | "modified",  file: string,): Date | undefined {  const args = type === "created"    ? ["log", "--diff-filter=A", "--follow", "-1", "--format=%at", "--", file]    : ["log", "-1", "--format=%at", "--", file];
  const { stdout, success } = new Deno.Command("git", { args }).outputSync();
  if (!success) {    return;  }  const str = new TextDecoder().decode(stdout);
  if (str) {    return parseDate(parseInt(str) * 1000);  }}
/** Parse a string or number (of miliseconds) to UTC Date */export function parseDate(date: string | number): Date {  return new Date(getZonedDateTime(date).epochMilliseconds);}
/** Parse a string or number (of miliseconds) to a zoned datetime */export function getZonedDateTime(  date: string | number,  timezone = "UTC",): Temporal.ZonedDateTime {  if (typeof date === "number") {    return Temporal.Instant.fromEpochMilliseconds(date).toZonedDateTimeISO(      timezone,    );  }
  try {    return Temporal.Instant.from(date).toZonedDateTimeISO(timezone);  } catch {    return Temporal.PlainDateTime.from(date).toZonedDateTime(timezone);  }}
/** * Parse a date/datetime from a filename. * * Filenames can be prepended with a date (yyyy-mm-dd) or datetime * (yyyy-mm-dd-hh-ii-ss) followed by an underscore (_) or hyphen (-). */export function parseDateFromFilename(  filename: string,): [string, Date | undefined] {  const filenameRegex =    /^(?<year>\d{4})-(?<month>\d\d)-(?<day>\d\d)(?:-(?<hour>\d\d)-(?<minute>\d\d)(?:-(?<second>\d\d))?)?(?:_|-)(?<basename>.*)/;  const fileNameParts = filenameRegex.exec(filename)?.groups;
  if (fileNameParts) {    const {      year,      month,      day,      hour = "00",      minute = "00",      second = "00",      basename,    } = fileNameParts;
    try {      const date = parseDate(        `${year}-${month}-${day} ${hour}:${minute}:${second}`,      );
      return [basename, date];    } catch {      throw new Error(        `Invalid date: ${filename} (${year}-${month}-${day} ${hour}:${minute}:${second})`,      );    }  }
  return [filename, undefined];}