"""PLAN 821-2 M01 기계 저장 — 지킴 시험(임시 사본 폴더만 · 정본 안 씀).

① 새 기계 = 단위 · 출처 자동(마스터 단위 · 「자체」) · 계수 서버 재계산 · 다른 줄 그대로
② 고침 = 그 칸 한 줄만 · 품셈 입력이 같으면 저장 계수 그대로(점보드릴 777) · 바뀌면 다시 셈
③ 기계 길은 시스템 관리자만(아니면 403) · 양식 목록 · 비슷한 기계 찾기 · 쓰는 곳
"""

from __future__ import annotations

import difflib
import json
import shutil
import sys
from pathlib import Path

import pytest
from fastapi import Depends, FastAPI
from fastapi.testclient import TestClient

from common_util import common_util_auth as auth
from M01_MasterData import M01_MasterData_Router as router_module
from M01_MasterData import M01_MasterData_Store as store

sys.path.insert(
    0, str(Path(__file__).resolve().parents[2] / "resources" / "master_data" / "scripts")
)
import master_machine_coef as mc  # noqa: E402

REAL = store.FOLDER
MACHINE = "기계.json"


@pytest.fixture
def copy(tmp_path: Path, monkeypatch) -> Path:
    for path in REAL.glob("*.json"):
        if not path.name.startswith("_") or path.name == store.mk.BOOK.name:
            shutil.copy(path, tmp_path / path.name)
    monkeypatch.setattr(store, "FOLDER", tmp_path)
    return tmp_path


def _app(role: str = "SYSTEM_ADMIN") -> TestClient:
    app = FastAPI()
    app.dependency_overrides[auth.verify_session] = lambda: {
        "user_id": 1,
        "name": "시험",
        "role": role,
        "company_id": 1,
    }
    deps = [Depends(auth.verify_session), Depends(auth.require_system_admin)]
    app.include_router(router_module.router, dependencies=deps)
    return TestClient(app)


def _save(client: TestClient, version: str, change: dict) -> None:
    res = client.post(
        "/api/m01/save",
        json={"files": [{"file": MACHINE, "version": version, "changes": [change]}]},
    )
    assert res.status_code == 200, res.text


def _diff(before: str, after: str) -> list[str]:
    return [
        x
        for x in difflib.unified_diff(before.splitlines(), after.splitlines(), lineterm="", n=0)
        if x[:1] in "+-" and not x.startswith(("+++", "---"))
    ]


def test_새_기계_단위_출처_자동_계수_서버_재계산(copy: Path) -> None:
    client = _app()
    lists = client.get("/api/m01/machine/lists").json()
    assert {"경유", "휘발유"} <= {f["value"] for f in lists["fuels"]}
    assert any(j["value"] == "1048" for j in lists["jobs"]) and lists["hour"] == 0.125
    found = client.get("/api/m01/machine/find", params={"q": "굴착기 1.0㎥"}).json()["rows"]
    seed = next(r for r in found if r["키"] == "EQ000022")
    before = (copy / MACHINE).read_text(encoding="utf-8")
    version = client.get("/api/m01/machine/row", params={"key": "EQ000022"}).json()["version"]
    values = {**seed["값"], "내용시간": 8000, "손료계수": 1, "상각비계수": 1}  # 계수 = 틀린 값
    row = {
        "키": "",
        "원문번호": "",
        **{k: seed[k] for k in ("원문", "구분", "상세구분")},
        "이름": "시험기계sub1",
        "규격": "9.9㎥",
        "단위": {},
        "값": values,
        "출처": {},
        "비고": None,
    }
    _save(client, version, {"op": "add", "row": row})
    after = (copy / MACHINE).read_text(encoding="utf-8")
    rows = json.loads(after)["줄"]
    new = rows[-1]
    assert new["이름"] == "시험기계sub1" and new["키"].startswith("EQ")
    assert new["값"] | mc.coef(8000, 1250, 0.9, 0.7, 0.1) == new["값"]  # 서버가 다시 셈
    assert new["값"]["손료계수"] == 1125 + 875 + 496
    assert set(new["단위"]) == set(new["값"]) == set(new["출처"])
    assert new["단위"] == {
        k: seed_unit for k, seed_unit in _units(before).items() if k in new["값"]
    }
    assert set(new["출처"].values()) == {"자체"}
    assert json.loads(before)["줄"] == rows[:-1]  # 다른 줄 그대로
    assert all(x.startswith("+") for x in _diff(before, after))  # 글은 더하기만


def _units(text: str) -> dict:
    return next(r for r in json.loads(text)["줄"] if r["키"] == "EQ000022")["단위"]


def _edit(client: TestClient, key: str, change) -> tuple[dict, dict]:
    got = client.get("/api/m01/machine/row", params={"key": key}).json()
    row = got["row"]
    _save(client, got["version"], {"op": "edit", "key": key, "row": change(row)})
    now = client.get("/api/m01/machine/row", params={"key": key}).json()["row"]
    return row, now


def test_고침_그_줄_그_칸만(copy: Path) -> None:
    client = _app()
    before = (copy / MACHINE).read_text(encoding="utf-8")
    row, now = _edit(client, "EQ000022", lambda r: {**r, "값": {**r["값"], "가격": 150000}})
    assert now == {**row, "값": {**row["값"], "가격": 150000}}
    lines = _diff(before, (copy / MACHINE).read_text(encoding="utf-8"))
    assert len(lines) == 2 and "142069" in lines[0] and "150000" in lines[1]  # 그 칸 한 줄만


def test_입력_같으면_저장_계수_그대로_바뀌면_다시_셈(copy: Path) -> None:
    client = _app()
    # 가격만 고침 + 화면이 계수를 틀리게 보내도 — 입력이 같으면 원문 표 값(정비비계수 777) 그대로
    row, now = _edit(
        client,
        "EQ000347",
        lambda r: {**r, "값": {**r["값"], "가격": 999, "정비비계수": 778, "손료계수": 1}},
    )
    assert now["값"] == {**row["값"], "가격": 999}
    _, now = _edit(client, "EQ000347", lambda r: {**r, "값": {**r["값"], "내용시간": 10000}})
    assert {k: now["값"][k] for k in mc.COEFS} == mc.coef(10000, 800, 0.9, 0.7, 0.1)


def test_기계_길은_시스템_관리자만() -> None:
    for role in ("USER", "COMPANY_ADMIN"):
        client = _app(role)
        assert client.get("/api/m01/machine/lists").status_code == 403
        assert client.get("/api/m01/machine/hourly", params={"keys": "EQ000022"}).status_code == 403
        assert client.post("/api/m01/save", json={"files": []}).status_code == 403


def test_쓰는_곳_찾기(copy: Path, monkeypatch) -> None:
    from M02_MasterTemplete import M02_Template_Layers as layers

    monkeypatch.setattr(layers, "layer_files", lambda kind: [])  # 공유 storage 안 읽음
    uses = _app().get("/api/m01/machine/uses", params={"key": "EQ000022"}).json()["uses"]
    assert any("GC000267" in u for u in uses)
    assert _app().get("/api/m01/machine/uses", params={"key": "EQ999999"}).status_code == 404