/**
 * 488-2 — 선 특성 메뉴 = 고른 것의 값(다르면 빈 칸) · 바꾸면 고른 것만 · 폴리선 자식까지 · Ctrl+Z 한 번에 옛 값.
 * 짝: `src/helpers/selection-style.ts`(리본 특성 · 특성 판 · COLOR · LWEIGHT 등 명령 같이 씀).
 * 실행: cd B07_DesignDetail/openwebcad && npx vitest run --dir ../../resources/tester/cad selection-style
 */
// 앱과 같은 flatten 사본(시험 쪽 사본 점은 앱 Segment 가 못 받음)
import { Point } from "../../../B07_DesignDetail/openwebcad/node_modules/@flatten-js/core";
import { beforeEach, describe, expect, it } from "vitest";
import type { Entity } from "../../../B07_DesignDetail/openwebcad/src/entities/Entity";
import { LineEntity } from "../../../B07_DesignDetail/openwebcad/src/entities/LineEntity";
import { PolyLineEntity } from "../../../B07_DesignDetail/openwebcad/src/entities/PolyLineEntity";
import { TextEntity } from "../../../B07_DesignDetail/openwebcad/src/entities/TextEntity";
import {
  dashToLineType,
  restyle,
  selectionLineStyle,
  styleTargets,
} from "../../../B07_DesignDetail/openwebcad/src/helpers/selection-style";
import {
  getActiveLineWidth,
  getEntities,
  getSelectedEntities,
  resetUndoBaseline,
  setActiveLineWidth,
  setEntities,
  setLayers,
  setSelectedEntityIds,
  undo,
} from "../../../B07_DesignDetail/openwebcad/src/state";

const line = (color: string, width = 1, dash?: number[]) => {
  const entity = new LineEntity("L", new Point(0, 0), new Point(10, 0));
  entity.lineColor = color;
  entity.lineWidth = width;
  entity.lineDash = dash;
  return entity;
};
/** 엔진 꼴 — 부모 값과 자식 선 값이 따로 */
const poly = (childColor: string) => {
  const kids = [line(childColor), line(childColor)];
  const entity = new PolyLineEntity("L", kids);
  entity.lineColor = "#ffffff";
  return entity;
};
const leafWidths = (entity: Entity) =>
  entity instanceof PolyLineEntity ? entity.getEntities().map((kid) => kid.lineWidth) : [entity.lineWidth];
const byId = (id: string) => getEntities().find((entity) => entity.id === id) as Entity;

/** 실은 도면 = 선 a(빨강) · 폴리선 b(자식 파랑) · 글 · 방금 그린 선 d */
let a: LineEntity;
let b: PolyLineEntity;
let d: LineEntity;
beforeEach(() => {
  setLayers([{ id: "L", name: "L", isVisible: true, isLocked: false }]);
  a = line("#ff0000");
  b = poly("#0000ff");
  const text = new TextEntity("L", "글", new Point(0, 0));
  setEntities([a, b, text], false);
  resetUndoBaseline();
  d = line("#00ff00");
  setEntities([...getEntities(), d], true); // 방금 그린 선
  setSelectedEntityIds([a.id, b.id, text.id]);
  setActiveLineWidth(1);
});

describe("selectionLineStyle", () => {
  it("다른 색 = 빈 칸 · 같은 두께 · 선종류 = 그 값 · 글은 안 봄", () => {
    expect(styleTargets(getSelectedEntities())).toHaveLength(2);
    expect(selectionLineStyle()).toEqual({ color: "", width: "1", lineType: "solid" });
  });

  it("폴리선은 자식 값을 봄 · 목록 밖 두께 · 점선 = 빈 칸", () => {
    setSelectedEntityIds([b.id]);
    expect(selectionLineStyle().color).toBe("#0000ff");
    a.lineWidth = 0.5;
    a.lineDash = [6, 4]; // 엔진 점선(목록 밖)
    setSelectedEntityIds([a.id]);
    expect(selectionLineStyle()).toEqual({ color: "#ff0000", width: "", lineType: "" });
    expect([dashToLineType([]), dashToLineType(undefined), dashToLineType([10, 5])]).toEqual([
      "solid",
      "solid",
      "dashed",
    ]);
  });

  it("고른 선 없으면 그리기 기본값", () => {
    setSelectedEntityIds([]);
    setActiveLineWidth(4);
    expect(selectionLineStyle().width).toBe("4");
  });
});

describe("restyle", () => {
  it("고른 것만 · 폴리선 자식까지 · 고름 · id 그대로 · 기본값 그대로", () => {
    restyle(styleTargets(getSelectedEntities()), (entity) => {
      entity.lineWidth = 3;
    });
    expect(leafWidths(byId(a.id))).toEqual([3]);
    expect(leafWidths(byId(b.id))).toEqual([3, 3]);
    expect(byId(d.id).lineWidth).toBe(1);
    expect(getSelectedEntities()).toHaveLength(3);
    expect(selectionLineStyle().width).toBe("3");
    expect(getActiveLineWidth()).toBe(1);
  });

  it("Ctrl+Z 한 번 = 옛 값 · 방금 그린 선 남음", () => {
    restyle(styleTargets(getSelectedEntities()), (entity) => {
      entity.lineWidth = 3;
    });
    undo();
    expect(leafWidths(byId(a.id))).toEqual([1]);
    expect(leafWidths(byId(b.id))).toEqual([1, 1]);
    expect(getEntities().map((entity) => entity.id)).toContain(d.id);
  });

  it("고른 것 없으면 아무것도 안 바뀜 · 되돌리기 칸 안 쌓임", () => {
    expect(restyle([], () => {})).toEqual([]);
    undo();
    expect(getEntities().map((entity) => entity.id)).not.toContain(d.id); // 한 칸 전 = 그리기 전
  });
});