export class DateFormatter {
  /**
   * Formats a date as "Jan 18, 2026" using UTC.
   */
  static formatShort(date: string | Date): string {
    const d = typeof date === 'string' ? new Date(date) : date;
    const months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
    return `${months[d.getUTCMonth()]} ${d.getUTCDate()}, ${d.getUTCFullYear()}`;
  }

  /**
   * Formats a date as "Jan 2026" using UTC.
   */
  static formatMonthYear(date: string | Date): string {
    const d = typeof date === 'string' ? new Date(date) : date;
    const months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
    return `${months[d.getUTCMonth()]} ${d.getUTCFullYear()}`;
  }

  /**
   * Formats a date as "15:00" using UTC.
   */
  static formatTime(date: string | Date): string {
    const d = typeof date === 'string' ? new Date(date) : date;
    const hours = d.getUTCHours().toString().padStart(2, '0');
    const minutes = d.getUTCMinutes().toString().padStart(2, '0');
    return `${hours}:${minutes}`;
  }

  /**
   * Formats a date as "Jan 18" using UTC.
   */
  static formatMonthDay(date: string | Date): string {
    const d = typeof date === 'string' ? new Date(date) : date;
    const months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
    return `${months[d.getUTCMonth()]} ${d.getUTCDate()}`;
  }

  /**
   * Formats a date as "Jan 18, 15:00" using UTC.
   */
  static formatDateTime(date: string | Date): string {
    const d = typeof date === 'string' ? new Date(date) : date;
    const months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
    const hours = d.getUTCHours().toString().padStart(2, '0');
    const minutes = d.getUTCMinutes().toString().padStart(2, '0');
    return `${months[d.getUTCMonth()]} ${d.getUTCDate()}, ${hours}:${minutes}`;
  }
}