import { Nullable } from './../../types';

/**
 *
 */
export interface IEdgeLocatorInitialValues {
  oriented?: boolean;
}

export interface IEdge<T = unknown> {
  key: number;
  edgeId: number;
  value?: T;
}

export interface vtkEdgeLocator {
  /**
   * Remove all the edges previously added.
   */
  initialize(): void;

  /**
   * Returns the inserted edge or null if no edge was inserted.
   * @param {Number} pointId0 Edge first point id
   * @param {Number} pointId1 Edge last point id
   * @return {IEdge|null} an edge object ({ key, edgeId, value }) or null
   */
  isInsertedEdge<T = unknown>(
    pointId0: number,
    pointId1: number
  ): Nullable<IEdge<T>>;

  /**
   * Insert edge if it does not already exist.
   * Returns the existing or newly inserted edge.
   *
   * @param {Number} pointId0 Edge first point id
   * @param {Number} pointId1 Edge last point id
   * @param {unknown} value Optional value option
   * @return {IEdge|null} an edge object ({ key, edgeId, value }) or null
   * @see insertEdge()
   * @see isInsertedEdge()
   */
  insertUniqueEdge<T>(pointId0: number, pointId1: number, value?: T): IEdge<T>;

  /**
   * Insert edge. If the edge already exists, it is overwritten by this
   * new edge. You may verify that the edge did not previously exist with
   * `isInsertedEdge()`.
   * Returns the newly inserted edge.
   * @param {Number} pointId0 Edge first point id
   * @param {Number} pointId1 Edge last point id
   * @param {unknown} value Optional value option
   * @return {Edge|null} an edge object ({ key, edgeId, value }) or null
   * @see isInsertedEdge
   * @see insertUniqueEdge
   */
  insertEdge<T>(pointId0: number, pointId1: number, value?: T): IEdge<T>;
}

// ----------------------------------------------------------------------------
// Static API
// ----------------------------------------------------------------------------

// ----------------------------------------------------------------------------

/**
 * Method use to create a new instance of vtkEdgeLocator
 * @param {IEdgeLocatorInitialValues} [initialValues] for pre-setting some of its content
 */
export function newInstance(
  initialValues?: IEdgeLocatorInitialValues
): vtkEdgeLocator;

/**
 * vtkEdgeLocator
 */
export declare const vtkEdgeLocator: {
  newInstance: typeof newInstance;
};

export default vtkEdgeLocator;