import { Dispatch, SetStateAction } from 'react';
import { getCurrentHistory } from '../Components/Editor/Editor';
import { IConfiguration } from '../Interfaces/IConfiguration';
import { IEditorState } from '../Interfaces/IEditorState';
import { IHistoryState } from '../Interfaces/IHistoryState';
import { ReviveState } from '../utils/saveload';


const initEditor = (configuration: IConfiguration): void => {
  // faire comme la callback de fetch
  
}

const getEditorState = (editorState: IEditorState): void => {
  const customEvent = new CustomEvent<IEditorState>('getEditorState', { detail: editorState });
  document.dispatchEvent(customEvent);
};

const getCurrentHistoryState = (editorState: IEditorState): void => {
  const customEvent = new CustomEvent<IHistoryState>(
    'getCurrentHistoryState',
    { detail: editorState.history[editorState.historyCurrentStep] });
  document.dispatchEvent(customEvent);
};

const appendNewState = (
  editorState: IEditorState,
  setHistory: Dispatch<SetStateAction<IHistoryState[]>>,
  setHistoryCurrentStep: Dispatch<SetStateAction<number>>,
  eventInitDict?: CustomEventInit
): void => {
  const state: IHistoryState = JSON.parse(eventInitDict?.detail.state);
  ReviveState(state);
  const history = getCurrentHistory(editorState.history, editorState.historyCurrentStep);

  history.push(state);
  setHistory(history);
  setHistoryCurrentStep(history.length - 1);
};

export interface IEditorEvent {
  name: string
  func: (
    editorState: IEditorState,
    setHistory: Dispatch<SetStateAction<IHistoryState[]>>,
    setHistoryCurrentStep: Dispatch<SetStateAction<number>>,
    eventInitDict?: CustomEventInit
  ) => void
}

const events: IEditorEvent[] = [
  { name: 'getEditorState', func: getEditorState },
  { name: 'getCurrentHistoryState', func: getCurrentHistoryState },
  { name: 'appendNewState', func: appendNewState }
];

export default events;