/**
 * Time utility functions
 */

/**
 * Round time down to nearest 15 minutes
 * @param {Date} date - Date object
 * @returns {Date} - Rounded date
 */
export function roundDownTo15Min(date) {
  const minutes = date.getMinutes();
  const roundedMinutes = Math.floor(minutes / 15) * 15;
  date.setMinutes(roundedMinutes);
  date.setSeconds(0);
  date.setMilliseconds(0);
  return date;
}

/**
 * Round time up to nearest 15 minutes
 * @param {Date} date - Date object
 * @returns {Date} - Rounded date
 */
export function roundUpTo15Min(date) {
  const minutes = date.getMinutes();
  const roundedMinutes = Math.ceil(minutes / 15) * 15;
  date.setMinutes(roundedMinutes);
  date.setSeconds(0);
  date.setMilliseconds(0);
  return date;
}

/**
 * Format time as HH:MM
 * @param {Date} date - Date object
 * @returns {string} - Time in HH:MM format
 */
export function formatTime(date) {
  const hours = String(date.getHours()).padStart(2, '0');
  const minutes = String(date.getMinutes()).padStart(2, '0');
  return `${hours}:${minutes}`;
}

/**
 * Format seconds to HH:MM:SS
 * @param {number} seconds - Duration in seconds
 * @returns {string} - Formatted duration
 */
export function formatDuration(seconds) {
  const hrs = Math.floor(seconds / 3600);
  const mins = Math.floor((seconds % 3600) / 60);
  const secs = seconds % 60;
  return `${String(hrs).padStart(2, '0')}:${String(mins).padStart(2, '0')}:${String(secs).padStart(2, '0')}`;
}