"""저장 안 한 고침 3단추 물음(PLAN 86-1 · `ui_template_leave_dialog.ts`) — Node 로 TS 를 돌려 판정.

못박는 것
  - 단추 순서 [취소] [버리고 넘어감] [저장 후 넘어감] · 기본 초점 = 취소 · Esc = 취소.
  - 저장 후 넘어감: 저장 성공 + 고침 없음 = saved / 저장 던짐 · 고침 남음 = stay(머묾).
  - 버리고 넘어감: discard 갈고리 호출 · 취소: 아무것도 안 부름.
  - M02 자리(UI_Main · Structure · ItemCards)가 이 물음을 씀.
"""

import json
import subprocess
from pathlib import Path

import pytest

ROOT = Path(__file__).resolve().parents[2]
M02 = ROOT / "M02_MasterTemplete"
SCRIPT = r"""
const fs = require("fs");
const ts = require(process.argv[1] + "/config/node_modules/typescript");
const src = fs.readFileSync(process.argv[1] + "/ui_template/ui_template_leave_dialog.ts", "utf8");
const js = ts.transpileModule(src, {
  compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
}).outputText;
let focused = null;
let overlay = null;
let buttons = [];
const node = (tag, o = {}) => ({
  tag, ...o, kids: [], on: {},
  append(...x) { this.kids.push(...x); },
  addEventListener(k, f) { this.on[k] = f; },
  remove() { overlay = null; },
});
const stubs = {
  "./ui_template_elements": {
    el: node,
    createButton: (o) => {
      const b = node("button", { label: o.label, variant: o.variant });
      b.focus = () => { focused = b.label; };
      b.click = o.onClick;
      buttons.push(b);
      return b;
    },
  },
  "./ui_template_locale": { t: (k) => k },
};
globalThis.document = { activeElement: null, body: { append(x) { overlay = x; } } };
const box = { exports: {} };
new Function("exports", "module", "require", js)(box.exports, box, (n) => stubs[n] ?? require(n));
const { leaveOrStay } = box.exports;

const run = async (pick, hooks) => {
  buttons = [];
  focused = null;
  const calls = [];
  const wrap = {
    save: async () => { calls.push("save"); if (hooks.throws) throw new Error("x"); },
    stillDirty: () => !!hooks.left,
    discard: () => calls.push("discard"),
  };
  const p = leaveOrStay("msg", wrap);
  const labels = buttons.map((b) => b.label);
  const first = focused;
  if (pick === "esc") overlay.on.keydown({ key: "Escape", stopPropagation() {} });
  else buttons[pick].click();
  return { got: await p, calls, labels, first };
};

(async () => {
  const out = {
    cancel: await run(0, {}),
    esc: await run("esc", {}),
    discard: await run(1, {}),
    save: await run(2, {}),
    saveThrows: await run(2, { throws: true }),
    saveLeft: await run(2, { left: true }),
  };
  process.stdout.write(JSON.stringify(out));
})();
"""


@pytest.fixture(scope="module")
def got() -> dict:
    done = subprocess.run(
        ["node", "-e", SCRIPT, str(ROOT)],
        capture_output=True,
        text=True,
        encoding="utf-8",
        check=True,
    )
    return json.loads(done.stdout)


def test_단추_순서_기본_초점_취소(got):
    row = got["cancel"]
    assert row["labels"] == ["M02_TreeCancel", "M02_TreeDiscardGo", "M02_TreeSaveGo"]
    assert row["first"] == "M02_TreeCancel"


def test_취소_Esc는_머묾(got):
    assert got["cancel"]["got"] == "stay" and got["cancel"]["calls"] == []
    assert got["esc"]["got"] == "stay" and got["esc"]["calls"] == []


def test_버리고_넘어감(got):
    assert got["discard"]["got"] == "discarded"
    assert got["discard"]["calls"] == ["discard"]


def test_저장_후_넘어감과_실패_머묾(got):
    assert got["save"] == {**got["save"], "got": "saved", "calls": ["save"]}
    assert got["saveThrows"]["got"] == "stay"  # 저장 던짐
    assert got["saveLeft"]["got"] == "stay"  # 저장 뒤에도 고침이 남음(카드 저장 실패 등)


def test_M02_자리가_3단추_물음을_씀():
    main = (M02 / "M02_MasterTemplete_UI_Main.ts").read_text(encoding="utf-8")
    assert "leaveOrStay(message, { save: doSave, stillDirty: busy" in main
    assert "askSettle" not in main
    assert "!(await showConfirmDialog(L(" not in main
    cards = (M02 / "M02_MasterTemplete_ItemCards.ts").read_text(encoding="utf-8")
    assert "leaveOrStay(TEXT.discard" in cards
    struct = (M02 / "M02_MasterTemplete_Structure.ts").read_text(encoding="utf-8")
    assert struct.count("leaveOrStay(TEXT.discardCards") == 2