import { CalendarEvent } from '../types/CalendarTypes';
import { SwpAllDayEventElement } from '../elements/SwpEventElement';

/**
 * AllDayEventRenderer - Simple rendering of all-day events
 * Handles adding and removing all-day events from the header container
 */
export class AllDayEventRenderer {
  private container: HTMLElement | null = null;

  constructor() {
    this.getContainer();
  }

  /**
   * Get or cache all-day container
   */
  private getContainer(): HTMLElement | null {
    if (!this.container) {
      const header = document.querySelector('swp-calendar-header');
      if (header) {
        this.container = header.querySelector('swp-allday-container');
      }
    }
    return this.container;
  }

  /**
   * Render an all-day event using factory pattern
   */
  public renderAllDayEvent(event: CalendarEvent, targetDate: string): HTMLElement | null {
    const container = this.getContainer();
    if (!container) return null;

    const allDayElement = SwpAllDayEventElement.fromCalendarEvent(event, targetDate);
    const element = allDayElement.getElement();
    
    container.appendChild(element);
    return element;
  }

  /**
   * Remove an all-day event by ID
   */
  public removeAllDayEvent(eventId: string): void {
    const container = this.getContainer();
    if (!container) return;

    const eventElement = container.querySelector(`swp-allday-event[data-event-id="${eventId}"]`);
    if (eventElement) {
      eventElement.remove();
    }
  }

  /**
   * Clear cache when DOM changes
   */
  public clearCache(): void {
    this.container = null;
  }
}