/**
 * CoreEvents - Consolidated essential events for the calendar
 * Reduces complexity from 102+ events to ~20 core events
 */
export const CoreEvents = {
  // Lifecycle events (3)
  INITIALIZED: 'core:initialized',
  READY: 'core:ready',
  DESTROYED: 'core:destroyed',
  
  // View events (3)
  VIEW_CHANGED: 'view:changed',
  VIEW_RENDERED: 'view:rendered',
  WORKWEEK_CHANGED: 'workweek:changed',
  
  // Navigation events (3)
  DATE_CHANGED: 'nav:date-changed',
  PERIOD_CHANGED: 'nav:period-changed',
  WEEK_CHANGED: 'nav:week-changed',
  
  // Data events (4)
  DATA_LOADING: 'data:loading',
  DATA_LOADED: 'data:loaded',
  DATA_ERROR: 'data:error',
  EVENTS_FILTERED: 'data:events-filtered',
  
  // Grid events (3)
  GRID_RENDERED: 'grid:rendered',
  GRID_CLICKED: 'grid:clicked',
  CELL_SELECTED: 'grid:cell-selected',
  
  // Event management (4)
  EVENT_CREATED: 'event:created',
  EVENT_UPDATED: 'event:updated',
  EVENT_DELETED: 'event:deleted',
  EVENT_SELECTED: 'event:selected',
  
  // System events (2)
  ERROR: 'system:error',
  REFRESH_REQUESTED: 'system:refresh',
  
  // Filter events (1)
  FILTER_CHANGED: 'filter:changed',
  
  // Rendering events (1) 
  EVENTS_RENDERED: 'events:rendered'
} as const;

// Type for the event values
export type CoreEventType = typeof CoreEvents[keyof typeof CoreEvents];

/**
 * Migration map from old EventTypes to CoreEvents
 * This helps transition existing code gradually
 */
export const EVENT_MIGRATION_MAP: Record<string, string> = {
  // Lifecycle
  'calendar:initialized': CoreEvents.INITIALIZED,
  'calendar:ready': CoreEvents.READY,
  
  // View
  'calendar:viewchanged': CoreEvents.VIEW_CHANGED,
  'calendar:viewrendered': CoreEvents.VIEW_RENDERED,
  'calendar:workweekchanged': CoreEvents.WORKWEEK_CHANGED,
  
  // Navigation
  'calendar:datechanged': CoreEvents.DATE_CHANGED,
  'calendar:periodchange': CoreEvents.PERIOD_CHANGED,
  'calendar:weekchanged': CoreEvents.WEEK_CHANGED,
  
  // Data
  'calendar:datafetchstart': CoreEvents.DATA_LOADING,
  'calendar:datafetchsuccess': CoreEvents.DATA_LOADED,
  'calendar:datafetcherror': CoreEvents.DATA_ERROR,
  'calendar:eventsloaded': CoreEvents.DATA_LOADED,
  
  // Grid
  'calendar:gridrendered': CoreEvents.GRID_RENDERED,
  'calendar:gridclick': CoreEvents.GRID_CLICKED,
  
  // Event management
  'calendar:eventcreated': CoreEvents.EVENT_CREATED,
  'calendar:eventupdated': CoreEvents.EVENT_UPDATED,
  'calendar:eventdeleted': CoreEvents.EVENT_DELETED,
  'calendar:eventselected': CoreEvents.EVENT_SELECTED,
  
  // System
  'calendar:error': CoreEvents.ERROR,
  'calendar:refreshrequested': CoreEvents.REFRESH_REQUESTED
};