/**
 * Base Command interface for undo/redo operations
 */
export interface Command {
  /** Execute the command */
  execute: () => void;
  /** Undo the command */
  undo: () => void;
  /** Optional: merge with another command of same type */
  merge?: (other: Command) => boolean;
  /** Command name for display */
  name: string;
  /** Timestamp of execution */
  timestamp: number;
}

/**
 * History state interface
 */
export interface HistoryState {
  /** Stack of executed commands */
  undoStack: Command[];
  /** Stack of undone commands */
  redoStack: Command[];
  /** Maximum number of commands to store */
  maxHistorySize: number;
  /** Is currently executing a command (prevent recursion) */
  isExecuting: boolean;
}