/**
 * CAD 시험 공용 조작(337 설계 6-2) — 빈 도면 · 쉬는 상태(선택 도구)에서 키 · 마우스를 사람처럼 넣음.
 * 시험 쪽 flatten-js 는 다른 사본(「Illegal Parameters」) — 점은 앱 코드로만 만들고 숫자로 판정.
 * 시험 캔버스는 축척 1 · y 위 + · 세계 (x, y) = 화면 (x, 높이 − y).
 */
import { vi } from "vitest";
import type { InputController } from "../../../../B07_DesignDetail/openwebcad/src/inputController/input-controller";
import {
  currentNotice,
  currentPrompt,
} from "../../../../B07_DesignDetail/openwebcad/src/inputController/prompt-input";
import {
  getActiveToolActor,
  getEntities,
  setSelectedEntityIds,
} from "../../../../B07_DesignDetail/openwebcad/src/state";
import { ActorEvent } from "../../../../B07_DesignDetail/openwebcad/src/tools/tool.types";
import { initApplication } from "../../../../B07_DesignDetail/openwebcad/test/helpers/init-application";
import { CANVAS_HEIGHT } from "../../../../B07_DesignDetail/openwebcad/test/helpers/tests.consts";

export type Mods = Partial<Pick<KeyboardEvent, "shiftKey" | "ctrlKey" | "altKey" | "metaKey">> & {
  code?: string;
  repeat?: boolean;
};

let controller: InputController;

/** 빈 도면 · 고른 것 없음 · 선택 도구(쉼)로 시작 — 앱 도우미가 켠 LINE 첫 물음에서 Esc */
export function initIdle(): InputController {
  controller = initApplication();
  getActiveToolActor()?.send({ type: ActorEvent.ESC });
  setSelectedEntityIds([]);
  return controller;
}

export const driver = (): InputController => controller;

/** 키 하나 — `key` 는 KeyboardEvent.key 꼴(「a」 · 「Enter」 · 「Escape」 · 「 」) */
export function key(k: string, mods: Mods = {}) {
  const preventDefault = vi.fn();
  controller.handleKeyStroke({
    key: k,
    code: mods.code ?? "",
    keyCode: 0,
    isComposing: false,
    shiftKey: false,
    ctrlKey: false,
    altKey: false,
    metaKey: false,
    repeat: false,
    target: null,
    preventDefault,
    stopPropagation: vi.fn(),
    ...mods,
  } as unknown as KeyboardEvent);
  return preventDefault;
}

/** 글자만 침(제출 안 함) */
export const typed = (text: string) => {
  for (const ch of text) key(ch);
};
/** 글자 + Space(= Enter) */
export const type = (text: string) => {
  typed(text);
  key(" ");
};
/** 글자 + Enter */
export const typeEnter = (text: string) => {
  typed(text);
  key("Enter");
};

const mouse = (x: number, y: number, button: number, mods: Mods = {}) =>
  ({
    button,
    clientX: x,
    clientY: CANVAS_HEIGHT - y,
    target: null,
    shiftKey: false,
    ctrlKey: false,
    preventDefault: () => {},
    stopPropagation: () => {},
    ...mods,
  }) as unknown as MouseEvent;

/** 세계 좌표 (x, y) 로 커서 이동 */
export const move = (x: number, y: number) =>
  controller.handleMouseMove({ clientX: x, clientY: CANVAS_HEIGHT - y } as MouseEvent);
export const press = (x: number, y: number, mods: Mods = {}) => {
  move(x, y);
  controller.handleMouseDown(mouse(x, y, 0, mods));
};
export const release = (x: number, y: number, mods: Mods = {}) => {
  move(x, y);
  controller.handleMouseUp(mouse(x, y, 0, mods));
};
/** 왼쪽 누름 한 번(누름 + 뗌 같은 자리) */
export const click = (x: number, y: number, mods: Mods = {}) => {
  press(x, y, mods);
  release(x, y, mods);
};
/** a 에서 눌러 b 에서 뗌 */
export const drag = (a: [number, number], b: [number, number], mods: Mods = {}) => {
  press(a[0], a[1], mods);
  move(b[0], b[1]);
  release(b[0], b[1], mods);
};
export const rightClick = (shift = false) =>
  controller.handleMouseUp(mouse(0, 0, 2, { shiftKey: shift }));
/** 가운데 단추 두 번 */
export const middleDouble = (x: number, y: number) => {
  for (let i = 0; i < 2; i++) {
    controller.handleMouseDown(mouse(x, y, 1));
    controller.handleMouseUp(mouse(x, y, 1));
  }
};

/** 도면 객체(유형 이름 거름 — 「Line」 · 「Circle」 …) */
export const entities = (type?: string) =>
  getEntities().filter((entity) => !type || entity.getType() === type);
/** 커서 곁 첫 줄(지금 물음) */
export const promptLine = () => currentPrompt().line;
/** 커서 곁 둘째 줄(거절 · 안내) */
export const noticeLine = () => currentNotice();
/** 맨 위 도구 이름(Tool) */
export const activeTool = () => getActiveToolActor()?.getSnapshot()?.context?.type;
export const toolState = () => getActiveToolActor()?.getSnapshot()?.value;
/** 친 글(커서 곁 입력 칸) */
export const inputText = () => (controller as unknown as { text: string }).text;
export const tick = () => new Promise((resolve) => setTimeout(resolve, 0));