export const formatToDateTimeString = (dateString: string): string => {
  const date = new Date(dateString);

  const year = date.getFullYear();
  const month = String(date.getMonth() + 1).padStart(2, "0"); // months are 0-indexed
  const day = String(date.getDate()).padStart(2, "0");

  const hours = String(date.getHours()).padStart(2, "0");
  const minutes = String(date.getMinutes()).padStart(2, "0");
  const seconds = String(date.getSeconds()).padStart(2, "0");

  return `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`;
};

export const getDefaultDateRange = () => {
  const endDate = new Date();
  const startDate = new Date();
  startDate.setHours(startDate.getHours() - 24);
  return {
    dateStart: startDate.toISOString(),
    dateEnd: endDate.toISOString(),
  };
};

/**
 * Normalize date range for API calls
 * - Start date is set to beginning of day (00:00:00.000)
 * - End date is set to end of day (23:59:59.999)
 * This ensures same-day selections include the entire day
 */
export const normalizeDateRangeForAPI = (
  startDate: Date,
  endDate: Date
): { dateStart: string; dateEnd: string } => {
  // Clone dates to avoid mutating originals
  const normalizedStart = new Date(startDate);
  const normalizedEnd = new Date(endDate);

  // Set start date to beginning of day
  normalizedStart.setHours(0, 0, 0, 0);

  // Set end date to end of day
  normalizedEnd.setHours(23, 59, 59, 999);

  return {
    dateStart: normalizedStart.toISOString(),
    dateEnd: normalizedEnd.toISOString(),
  };
};