Calendar/src/types/ColumnDataSource.ts

/**
 * Column information container
 * Contains both identifier and actual data for a column
 */
export interface IColumnInfo {
  identifier: string;      // "2024-11-13" (date mode) or "person-1" (resource mode)
  data: Date | any;        // Date for date-mode, IResource for resource-mode
}

/**
 * IColumnDataSource - Defines the contract for providing column data
 *
 * This interface abstracts away whether columns represent dates or resources,
 * allowing the calendar to switch between date-based and resource-based views.
 */
export interface IColumnDataSource {
  /**
   * Get the list of columns to render
   * @returns Array of column information
   */
  getColumns(): IColumnInfo[];

  /**
   * Get the type of columns this datasource provides
   */
  getType(): 'date' | 'resource';
}