date-util.ts

import { dayJS } from "./day-js";

export const completeDateIfNecessary = (dayInput: string): string => {
  const dateRegex = /^\d{2}\/\d{2}\/\d{4}$/;

  if (dateRegex.test(dayInput)) {
    console.log("Format correct :", dayInput);
    return dayInput;
  }

  const day = parseInt(dayInput, 10);
  if (!isNaN(day) && day >= 1 && day <= 31) {
    const currentYear = dayJS().year();
    const currentMonth = dayJS().month() + 1;
    const formattedMonth = currentMonth < 10 ? `0${currentMonth}` : `${currentMonth}`;
    const formattedDay = day < 10 ? `0${day}` : `${day}`;

    const formattedDate = `${formattedDay}/${formattedMonth}/${currentYear}`;
    console.log("Date formée :", formattedDate);

    if (!dayJS(formattedDate, "DD/MM/YYYY", true).isValid()) {
      console.error("Date invalide après parsing :", formattedDate);
      return "Invalid Date";
    }

    return formattedDate;
  }

  console.error("Date invalide (hors plage 1-31) :", dayInput);
  return "Invalid Date";
};