/**
 * PEDIT — 고른 선 · 호를 폴리선 하나로 묶음. 고르기 물음 = 오토캐드 「객체 선택:」(337 라 · 설계 2-14 ④) ·
 * 고른 것 있으면 바로 · 빈 고르기 Enter · Esc = 끝 · 묶은 뒤 끝(쉬는 상태).
 */
import { toast } from 'react-toastify';
import { createMachine } from 'xstate';
import { PolyLineEntity } from '../entities/PolyLineEntity.ts';
import {
	getActiveLayerId,
	getNotSelectedEntities,
	getSelectedEntities,
	setEntities,
} from '../state';
import { Tool } from '../tools';
import { END_STATE, type StateEvent, type ToolContext } from './tool.types';
import { endState, selectionState, startState } from './transform.helpers';

export interface PeditContext extends ToolContext {}

export enum PeditState {
	INIT = 'INIT',
	WAITING_FOR_SELECTION = 'WAITING_FOR_SELECTION',
	CONVERT_SELECTION_TO_POLYLINE = 'CONVERT_SELECTION_TO_POLYLINE',
}

const convert = () => {
	const newPolyLine = new PolyLineEntity(getActiveLayerId(), getSelectedEntities());
	setEntities([...getNotSelectedEntities(), newPolyLine], true);
	toast.success(`Created polyline with ${newPolyLine.numberOfSegments()} segments`);
};

// biome-ignore lint/suspicious/noExplicitAny: 공용 상태 조각(여러 도구 공통)을 섞어 만든다
const states: Record<string, any> = {
	[PeditState.INIT]: startState(PeditState.CONVERT_SELECTION_TO_POLYLINE),
	[PeditState.WAITING_FOR_SELECTION]: selectionState(PeditState.CONVERT_SELECTION_TO_POLYLINE),
	[PeditState.CONVERT_SELECTION_TO_POLYLINE]: {
		always: { actions: convert, target: END_STATE },
	},
	[END_STATE]: endState,
};

/** 고른 객체를 폴리선 하나로 */
export const peditToolStateMachine = createMachine({
	types: {} as { context: PeditContext & { originals: unknown[] }; events: StateEvent },
	context: { originals: [], type: Tool.PEDIT },
	initial: PeditState.INIT,
	states,
});