Calendar/src/types/EventTypes.ts

/**
 * Type definitions for calendar events and drag operations
 */

import { ColumnBounds } from "../utils/ColumnDetectionUtils";
import { CalendarEvent } from "./CalendarTypes";

/**
 * Drag Event Payload Interfaces
 * Type-safe interfaces for drag and drop events
 */

// Common position interface
export interface MousePosition {
  x: number;
  y: number;
}

// Drag start event payload
export interface DragStartEventPayload {
  draggedElement: HTMLElement;
  draggedClone: HTMLElement | null;
  mousePosition: MousePosition;
  mouseOffset: MousePosition;
  columnBounds: ColumnBounds | null;
}

// Drag move event payload
export interface DragMoveEventPayload {
  draggedElement: HTMLElement;
  draggedClone: HTMLElement;
  mousePosition: MousePosition;
  mouseOffset: MousePosition;
  columnBounds: ColumnBounds | null;
  snappedY: number;
}

// Drag end event payload
export interface DragEndEventPayload {
  originalElement: HTMLElement;
  draggedClone: HTMLElement | null;
  sourceColumn: ColumnBounds | null;  // Where drag started
  mousePosition: MousePosition;
  finalPosition: {
    column: ColumnBounds | null;  // Where drag ended
    snappedY: number;
  };
  target: 'swp-day-column' | 'swp-day-header' | null;
}

// Drag mouse enter header event payload
export interface DragMouseEnterHeaderEventPayload {
  targetColumn: ColumnBounds;
  mousePosition: MousePosition;
  originalElement: HTMLElement | null;
  draggedClone: HTMLElement;
  calendarEvent: CalendarEvent;
  // Delegate pattern - allows subscriber to replace the dragged clone
  replaceClone: (newClone: HTMLElement) => void;
}

// Drag mouse leave header event payload
export interface DragMouseLeaveHeaderEventPayload {
  targetDate: string | null;
  mousePosition: MousePosition;
  originalElement: HTMLElement| null;
  draggedClone: HTMLElement| null;
}

// Drag mouse enter column event payload
export interface DragMouseEnterColumnEventPayload {
  targetColumn: ColumnBounds;
  mousePosition: MousePosition;
  snappedY: number;
  originalElement: HTMLElement | null;
  draggedClone: HTMLElement;
  calendarEvent: CalendarEvent;
  // Delegate pattern - allows subscriber to replace the dragged clone
  replaceClone: (newClone: HTMLElement) => void;
}

// Drag column change event payload
export interface DragColumnChangeEventPayload {
  originalElement: HTMLElement;
  draggedClone: HTMLElement | null;
  previousColumn: ColumnBounds | null;
  newColumn: ColumnBounds;
  mousePosition: MousePosition;
}

// Header ready event payload
export interface HeaderReadyEventPayload {
  headerElements: ColumnBounds[];

}

// Resize end event payload
export interface ResizeEndEventPayload {
  eventId: string;
  element: HTMLElement;
  finalHeight: number;
}