"""단가산출 흐름도 「식 보기」(`M02_DF_FormulaView.ts`) · 엑셀 「조건 만들기」 글 쪽(`spreadsheet_condition_text.ts`).

화면 TS 를 그 자리에서 트랜스파일해 node 로 돌림 — 상대 경로 TS(엔진 포함)는 이어 트랜스파일 · 화면 부품(@ui 의 elements · locale · modal)은 빈 흉내 · 엔진이 쓰는 @ui/sheet 는 그대로.
견본 함수 상자는 이 시험 안에 둠.
"""

import json
import shutil
import subprocess
from pathlib import Path

import pytest

ROOT = Path(__file__).resolve().parents[2]
VIEW = ROOT / "M02_MasterTemplete" / "DataFlow" / "M02_DF_FormulaView.ts"
TEXT = ROOT / "A00_Common" / "spreadsheet" / "spreadsheet_condition_text.ts"

RUNNER = r"""
const fs = require("fs");
const path = require("path");
const [root, viewFile, textFile] = process.argv.slice(1);
const ts = require(path.join(root, "config", "node_modules", "typescript"));
const stub = new Proxy({}, { get: (_t, k) => (k === "currentLanguageIndex" ? 0 : () => undefined) });
const cache = {};
function load(f) {
  if (cache[f]) return cache[f].exports;
  const js = ts.transpileModule(fs.readFileSync(f, "utf8"), {
    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
  }).outputText;
  const box = (cache[f] = { exports: {} });
  const req = (id) => {
    if (id.startsWith(".") || id.startsWith("@ui/sheet/")) {
      const p = id.startsWith("@ui/sheet/")
        ? path.join(root, "ui_template", "sheet", id.slice("@ui/sheet/".length))
        : path.resolve(path.dirname(f), id);
      return fs.existsSync(p + ".ts") ? load(p + ".ts") : stub;
    }
    return stub;
  };
  new Function("exports", "module", "require", js)(box.exports, box, req);
  return box.exports;
}
const v = load(viewFile);
const t = load(textFile);
const jobs = JSON.parse(fs.readFileSync(0, "utf8"));
const out = jobs.map((job) => {
  if (job.op === "lines") {
    const values = v.cellValuesOf(job.box, job.arrived);
    return { values, lines: v.formulaLines(job.box, values) };
  }
  if (job.op === "toFormula") return t.draftToFormula(job.draft);
  if (job.op === "toDraft") return t.formulaToDraft(job.formula);
  return null;
});
process.stdout.write(JSON.stringify(out));
"""


def run(jobs: list[dict]) -> list:
    if shutil.which("node") is None:
        pytest.skip("node 가 없음")
    done = subprocess.run(
        ["node", "-e", RUNNER, str(ROOT), str(VIEW), str(TEXT)],
        input=json.dumps(jobs, ensure_ascii=False),
        capture_output=True,
        text=True,
        encoding="utf-8",
        check=True,
    )
    return json.loads(done.stdout)


def func_box(cells: dict, inputs: list, variables: list, out_cell: str, out_name: str) -> dict:
    return {
        "id": "f1",
        "kind": "function",
        "name": "석공 품",
        "color": "",
        "unit": "인",
        "x": 0,
        "y": 0,
        "func": {
            "sheet": {"id": "s1", "이름": "석공 품", "칸": cells},
            "inputs": inputs,
            "variables": variables,
            "output": {"cell": out_cell, "name": out_name, "unit": "인"},
        },
    }


def var(name: str, cell: str, example) -> dict:
    return {"name": name, "type": "number", "unit": "-", "example": example, "cell": cell}


# 석공량(받는 알약 B1) · 높이(변수 B2) → B3 = 석공량 × (1 + 높이 ÷ 100)
PLAIN = func_box(
    {
        "A1": {"값": "석공량"},
        "B3": {"식": "B1*(1+B2/100)"},
    },
    [{"port": "석공량", "cell": "B1"}],
    [var("높이", "B2", 4)],
    "B3",
    "석공 인",
)


def test_이름_식과_값_식():
    (got,) = run([{"op": "lines", "box": PLAIN, "arrived": {"석공량": 0.15}}])
    assert got["values"]["B3"] == pytest.approx(0.156)
    (line,) = got["lines"]
    assert line["name"] == "석공 인"
    assert line["named"] == "석공량 × (1 + 높이 ÷ 100)"
    assert line["valued"] == "0.15 × (1 + 4 ÷ 100) = 0.156"
    assert "branches" not in line


def test_중간_칸이_먼저_결과_칸이_마지막():
    box = func_box(
        {"B3": {"식": "B1*B2"}, "B4": {"식": "B3+1"}},
        [{"port": "석공량", "cell": "B1"}],
        [var("높이", "B2", 4)],
        "B4",
        "합",
    )
    (got,) = run([{"op": "lines", "box": box, "arrived": {"석공량": 2}}])
    assert [x["name"] for x in got["lines"]] == ["B3", "합"]  # 연결 없는 칸은 주소 그대로
    assert got["lines"][1]["named"] == "B3 + 1"
    assert got["lines"][1]["valued"] == "8 + 1 = 9"


@pytest.mark.parametrize(
    ("ground", "now"),
    [("토사", [True, False]), ("암", [False, True])],
)
def test_IF_줄과_지금_갈래(ground, now):
    box = func_box(
        {"B3": {"식": 'IF(B4="토사",B1*2,B1*3)'}},
        [{"port": "석공량", "cell": "B1"}],
        [{"name": "지반", "type": "choice", "unit": "-", "example": ground, "cell": "B4"}],
        "B3",
        "결과",
    )
    (got,) = run([{"op": "lines", "box": box, "arrived": {"석공량": 10}}])
    (line,) = got["lines"]
    assert [b["now"] for b in line["branches"]] == now
    assert line["branches"][0]["when"] == '지반 = "토사"'
    assert line["branches"][0]["then"] == "석공량 × 2"
    assert line["branches"][1] == {"when": "아니면", "then": "석공량 × 3", "now": now[1]}
    assert line["valued"].endswith("= 20" if ground == "토사" else "= 30")


def test_조건_만들기_식과_다시_줄():
    draft = {
        "branches": [
            {
                "left": "B1",
                "op": "=",
                "right": {"kind": "value", "value": "토사"},
                "then": {"kind": "cell", "cell": "C1"},
            },
            {
                "left": "B1",
                "op": "≥",
                "right": {"kind": "value", "value": 3},
                "then": {"kind": "value", "value": 0.5},
            },
        ],
        "otherwise": {"kind": "value", "value": 0},
    }
    (formula,) = run([{"op": "toFormula", "draft": draft}])
    assert formula == 'IF(B1="토사",C1,IF(B1>=3,0.5,0))'
    (back,) = run([{"op": "toDraft", "formula": formula}])
    assert back == draft


@pytest.mark.parametrize("formula", ["SUM(B1:B2)", "IF(B1+1>2,1,2)", "IF(B1>2,B2*2,0)"])
def test_못_바꾸는_식은_null(formula):
    (back,) = run([{"op": "toDraft", "formula": formula}])
    assert back is None