/**
 * 글 테두리 한 벌(PLAN 487 · `helpers/text-frame.ts`) — 스침 · 고름 테두리 네 귀 = 더블클릭 입력 칸 네 귀
 * (왼 · 가운데 · 오른 · 90° 돈 글 · 굵게 · 여러 줄 묶음 · 도각 칸) · 잡는 범위 = 테두리 안.
 * 실행: cd B07_DesignDetail/openwebcad && npx vitest run --dir ../../resources/tester/cad text-frame
 */
import { Point, Vector } from "@flatten-js/core";
import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";

const SCALE = 2;
const fonts: string[] = [];
vi.mock("../../../B07_DesignDetail/openwebcad/src/theme.ts", () => ({
  paintColor: (color: string) => color,
}));
vi.mock("../../../B07_DesignDetail/openwebcad/src/state.ts", async (importOriginal) => ({
  ...(await importOriginal<Record<string, unknown>>()),
  getScreenCanvasDrawController: () => ({
    getScreenScale: () => SCALE,
    worldToTarget: (point: Point) => new Point(point.x * SCALE, point.y * SCALE),
    targetToWorld: (point: Point) => new Point(point.x / SCALE, point.y / SCALE),
    // 글자당 0.5 em · 굵게는 1.2 배 — 굵게가 폭 재기에 들어가는지 봄
    measureTextScreen: (label: string, px: number, font: { bold?: boolean } = {}) => {
      fonts.push(font.bold ? "bold" : "normal");
      return label.length * px * 0.5 * (font.bold ? 1.2 : 1);
    },
    zoomToFitScreen: () => {},
  }),
}));

import { TextEntity } from "../../../B07_DesignDetail/openwebcad/src/entities/TextEntity.ts";
import {
  closeTextEditor,
  handleTextDoubleClick,
  openTextEditor,
} from "../../../B07_DesignDetail/openwebcad/src/integration/text-inplace-edit";
import {
  resetUndoBaseline,
  setEntities,
  setHighlightedEntityIds,
} from "../../../B07_DesignDetail/openwebcad/src/state";

class FakeElement {
  public value = "";
  public className = "";
  public style: Record<string, string> = {};
  constructor(public tagName: string) {}
  setAttribute() {}
  addEventListener() {}
  focus() {}
  select() {}
  remove() {}
}
let created: FakeElement[] = [];
const BOUNDS = { left: 10, top: 20, bottom: 520, right: 810 };
const canvas = { getBoundingClientRect: () => BOUNDS } as unknown as HTMLCanvasElement;

beforeEach(() => {
  created = [];
  fonts.length = 0;
  vi.stubGlobal("window", { dispatchEvent: () => true });
  vi.stubGlobal("requestAnimationFrame", () => 1);
  vi.stubGlobal("cancelAnimationFrame", () => {});
  vi.stubGlobal("document", {
    createElement: (tag: string) => {
      const element = new FakeElement(tag);
      created.push(element);
      return element;
    },
    body: { appendChild: () => {} },
    addEventListener: () => {},
    removeEventListener: () => {},
  });
});
afterEach(() => {
  closeTextEditor(false);
  setHighlightedEntityIds([]);
  vi.unstubAllGlobals();
});

type Xy = [number, number];
/** 월드 → 화면(px) — 캔버스 왼쪽 · 아래 기준 · y 뒤집음 */
const toScreen = (p: Point): Xy => [BOUNDS.left + p.x * SCALE, BOUNDS.bottom - p.y * SCALE];

/** 스침 테두리 네 귀(화면) — 글을 강조한 채 그려 dash 선 네 개의 시작점 */
function outlineCorners(entities: TextEntity[]): Xy[] {
  setEntities(entities, false);
  resetUndoBaseline();
  setHighlightedEntityIds(entities.map((entity) => entity.id));
  const starts: Point[] = [];
  const controller = {
    setLineStyles: () => {},
    drawText: () => {},
    drawLine: (start: Point) => starts.push(start),
  };
  for (const entity of entities) entity.draw(controller as never);
  return starts.map(toScreen);
}

/** 입력 칸 네 귀(화면) — left · top + rotate · translate · 폭 · 높이 */
function editorCorners(editor: FakeElement): Xy[] {
  const px = (value: string) => Number.parseFloat(value);
  const m = /rotate\(([-\d.e]+)rad\) translate\(([-\d.e]+)px, ([-\d.e]+)px\)/.exec(
    editor.style.transform,
  );
  if (!m) throw new Error(editor.style.transform);
  const [angle, tx, ty] = [Number(m[1]), Number(m[2]), Number(m[3])];
  const [w, h] = [px(editor.style.width), px(editor.style.height)];
  const [ox, oy] = [px(editor.style.left), px(editor.style.top)];
  const at = (x: number, y: number): Xy => [
    ox + x * Math.cos(angle) - y * Math.sin(angle),
    oy + x * Math.sin(angle) + y * Math.cos(angle),
  ];
  return [at(tx, ty), at(tx + w, ty), at(tx + w, ty + h), at(tx, ty + h)];
}

const expectSame = (a: Xy[], b: Xy[]) => {
  expect(a).toHaveLength(4);
  a.forEach(([x, y], i) => {
    expect(Math.abs(x - b[i][0])).toBeLessThanOrEqual(1);
    expect(Math.abs(y - b[i][1])).toBeLessThanOrEqual(1);
  });
};

const text = (label: string, options: Record<string, unknown> = {}, at = new Point(100, 200)) =>
  new TextEntity("0", label, at, { fontSize: 5, ...options });

describe("스침 테두리 = 더블클릭 입력 칸", () => {
  it.each([
    ["왼", { textAlign: "left" }],
    ["가운데", { textAlign: "center" }],
    ["오른", { textAlign: "right" }],
    ["90° 돈 글", { textDirection: new Vector(0, 1) }],
    ["30° 돈 오른 정렬", { textAlign: "right", textDirection: new Vector(Math.sqrt(3), 1) }],
    ["굵게", { bold: true }],
  ])("%s — 네 귀 차 ≤ 1 px", (_name, options) => {
    const entity = text("STA. 0+000", options);
    const outline = outlineCorners([entity]);
    openTextEditor([entity], canvas);
    expectSame(outline, editorCorners(created[0]));
  });

  it("굵게 = 굵은 글꼴로 폭을 잼 · 테두리 폭이 넓어짐", () => {
    const plain = outlineCorners([text("배수관")]);
    const bold = outlineCorners([text("배수관", { bold: true })]);
    expect(fonts).toContain("bold");
    expect(bold[1][0] - bold[0][0]).toBeGreaterThan(plain[1][0] - plain[0][0]);
  });

  it("가운데 정렬 = 기준점이 테두리 한가운데 · 위아래 같음", () => {
    const [lt, rt, , lb] = outlineCorners([text("배수관")]);
    const [bx, by] = toScreen(new Point(100, 200));
    expect((lt[0] + rt[0]) / 2).toBeCloseTo(bx);
    expect((lt[1] + lb[1]) / 2).toBeCloseTo(by);
  });

  it("여러 줄 = 묶음 테두리 하나(첫 줄이 그림) = 여러 줄 칸", () => {
    const first = text("첫 줄", {}, new Point(100, 200));
    const second = text("둘째 줄 길게", {}, new Point(100, 193));
    first.groupId = second.groupId = "m1";
    const outline = outlineCorners([second, first]);
    openTextEditor([first, second], canvas);
    expect(created[0].tagName).toBe("textarea");
    expectSame(outline, editorCorners(created[0]));
  });

  it("도각 칸 글 = 칸이 테두리 · 입력 칸도 칸 크기", () => {
    const entity = text("{{공사명}}", { boxWidth: 60, boxHeight: 8 });
    const outline = outlineCorners([entity]);
    expect(outline[1][0] - outline[0][0]).toBeCloseTo(60 * SCALE);
    openTextEditor([entity], canvas);
    expectSame(outline, editorCorners(created[0]));
  });
});

describe("잡는 범위 = 테두리 안", () => {
  it("테두리 안 = 0 · 밖 = 테두리까지 거리", () => {
    const entity = text("STA. 0+000", { textAlign: "left" });
    // 폭 = 10 자 × 10 px × 0.5 = 50 px = 25 월드 · 여유 7.5 px = 3.75 월드
    expect(entity.distanceTo(new Point(124, 201))?.[0]).toBe(0);
    expect(entity.distanceTo(new Point(130, 200))?.[0]).toBeCloseTo(130 - (125 + 3.75));
  });

  it("끝 글자 더블클릭도 칸을 띄움 · 테두리 + 집기 반경 밖은 안 띄움", () => {
    setEntities([text("STA. 0+000", { textAlign: "left" })], false);
    const dblclickAt = (x: number, y: number) =>
      handleTextDoubleClick(
        { clientX: BOUNDS.left + x * SCALE, clientY: BOUNDS.bottom - y * SCALE } as MouseEvent,
        canvas,
      );
    dblclickAt(140, 200); // 테두리 오른끝 128.75 + 반경 5 밖
    expect(created).toHaveLength(0);
    dblclickAt(124, 200); // 끝 글자
    expect(created).toHaveLength(1);
  });
});