import * as React from 'react';
import { IntroJs, Options } from 'intro.js';

interface Step {
  /**
   * CSS selector or element to use for the step.
   */
  element?: string | HTMLElement | Element;
  /**
   * The tooltip content.
   */
  intro: string | React.ReactNode;
  /**
   * Position of the tooltip.
   */
  position?: string;
  /**
   * The tooltip title.
   */
  title?: string;
  /**
   * CSS class of the tooltip.
   */
  tooltipClass?: string;
  /**
   * CSS class of the helperLayer.
   */
  highlightClass?: string;
}

interface Hint {
  /**
   * CSS selector to use for the hint.
   */
  element: string;
  /**
   * The tooltip text.
   */
  hint: string;
  /**
   * Position of the tooltip.
   */
  hintPosition?: string;
}

interface StepsProps {
  /**
   * Defines if the steps are visible or not.
   * @default false
   */
  enabled?: boolean;
  /**
   * Step index to start with when showing the steps.
   */
  initialStep: number;
  /**
   * All the steps.
   */
  steps: Step[];
  /**
   * Callback called when the steps are disabled.
   * Required to force keeping track of the state when the steps are dismissed with an Intro.js event and not the
   * enabled prop.
   */
  onExit(stepIndex: number): void;
  /**
   * Callback called before exiting the intro.
   * If you want to prevent exiting the intro, you can return false in this callback (available since intro.js 0.2.7).
   */
  onBeforeExit?(stepIndex: number): void | false;
  /**
   * Callback called when the steps are enabled.
   */
  onStart?(stepIndex: number): void;
  /**
   * Callback called when the current step is changed.
   */
  onChange?(nextStepIndex: number, nextElement: Element): void;
  /**
   * Callback called before changing the current step.
   * If you want to prevent the transition to the next / previous step, you can return false in this callback
   * (available since intro.js 2.8.0).
   */
  onBeforeChange?(nextStepIndex: number, nextElement: Element): void | false | Promise<void | false>;
  /**
   * Callback called after changing the current step.
   */
  onAfterChange?(newStepIndex: number, newElement: Element): void;
  /**
   * Callback called if you prevented transitioning to a new step by returning false in onBeforeChange.
   */
  onPreventChange?(stepIndex: number): void;
  /**
   * Callback called when all the steps are completed.
   */
  onComplete?(): void;
  /**
   * Intro.js options.
   */
  options?: Options;
}

interface HintsProps {
  /**
   * Defines if the hints are visible or not.
   * @default false
   */
  enabled?: boolean;
  /**
   * All the hints.
   */
  hints: Hint[];
  /**
   * Callback called when a hint is clicked.
   */
  onClick?(): void;
  /**
   * Callback called when a hint is closed.
   */
  onClose?(): void;
  /**
   * Intro.js options.
   */
  options?: Options;
}

export class Steps extends React.Component<StepsProps> {
  public introJs: IntroJs;
  public updateStepElement(stepIndex: number): void;
}

export class Hints extends React.Component<HintsProps> {}