zync-nest-library/libs/src/utils/date.ts

NestJS library with database backup and file upload utilities

import moment from "moment";

function parseDate(dateString: string): Date | null {
  const parts = dateString.split("/");
  if (parts.length !== 3) return null;

  const day = parseInt(parts[0]);
  const month = parseInt(parts[1]);
  const year = parseInt(parts[2]);

  // Validate ranges
  if (day < 1 || day > 31 || month < 1 || month > 12 || year < 0 || year > 99) {
    return null;
  }

  // Convert 2-digit year to 4-digit (assuming 20xx for years 00-99)
  const fullYear = year < 50 ? 2000 + year : 1900 + year;

  return new Date(fullYear, month - 1, day);
}

export const DateUtils = {
  formatStringDate: (dateString: string): number => {
    const date = parseDate(dateString);
    if (!date) return moment().valueOf();

    const formattedDate = date.toLocaleDateString("en-GB", {
      day: "2-digit",
      month: "2-digit",
      year: "numeric",
    });

    // If it's a string, parse it with the correct format
    if (typeof formattedDate === "string") {
      const parsed = moment(formattedDate, "DD/MM/YYYY");
      return parsed.isValid() ? parsed.valueOf() : moment().valueOf();
    }

    return moment().valueOf();
  },
};