"""54-2 · 538 [?] 가이드 — 서버가 A05_EduDetail/guide/<페이지>/*.md 를 부를 때마다 읽음.

글 내용 검사(명사형 · 길이)는 두지 않음 — 관리자가 화면에서 고친 글이 시험을 빨갛게 안 하게.
"""

import shutil
import tempfile
from pathlib import Path

import pytest
from fastapi import HTTPException

from common_util.common_util_help_router import HELP_ROOT, file_version, read_guide, read_help


@pytest.fixture
def tmp_path():  # 기본 pytest 임시 폴더가 이 PC 에서 막힘 — 직접 만듦
    path = Path(tempfile.mkdtemp())
    yield path
    shutil.rmtree(path, ignore_errors=True)


def test_every_page_has_manual_first():
    for page in [f"B0{n}" for n in range(2, 10)] + [f"D0{n}" for n in range(1, 5)]:
        items = read_help(page)
        assert items and items[0]["key"] == "00_설명서", page
    for n in range(1, 8):
        assert read_help(f"E0{n}")[0]["key"] == "00_설명서"


def test_title_order_and_live_edit(tmp_path):
    page = tmp_path / "B05"
    page.mkdir()
    (page / "10_배관.md").write_text("# 배관\n\n본문", encoding="utf-8")
    (page / "00_설명서.md").write_text("제목 없음", encoding="utf-8")
    items = read_help("B05", tmp_path)
    assert [i["key"] for i in items] == ["00_설명서", "10_배관"]
    assert [i["title"] for i in items] == ["00_설명서", "배관"]
    (page / "10_배관.md").write_text("# 배관\n\n고친 글", encoding="utf-8")
    assert "고친 글" in read_help("B05", tmp_path)[1]["text"]


def test_version_is_file_hash_and_changes(tmp_path):
    page = tmp_path / "B05"
    page.mkdir()
    path = page / "00_설명서.md"
    path.write_text("# 종단\n", encoding="utf-8")
    first = read_help("B05", tmp_path)[0]["version"]
    assert first == file_version(path.read_bytes()) and len(first) == 16
    path.write_text("# 종단\n고침\n", encoding="utf-8")
    assert read_help("B05", tmp_path)[0]["version"] != first


def test_guide_pages_order_title_and_skips(tmp_path):
    for name in ["E02", "B05", "B01", "b03", "X01", "B5", "_B04", "D01"]:
        (tmp_path / name).mkdir()
    (tmp_path / "B05" / "00_설명서.md").write_text("# 종단 설계\n", encoding="utf-8")
    (tmp_path / "B05" / "_scenes.md").write_text("# 장면\n", encoding="utf-8")
    (tmp_path / "B05" / "그림.webp").write_bytes(b"x")
    (tmp_path / "B01" / "00_설명서.md").write_text("# 대시보드\n", encoding="utf-8")
    (tmp_path / "E02" / "10_칸_뜻.md").write_text("# 칸\n", encoding="utf-8")
    for name in ["b03", "X01", "B5", "_B04"]:
        (tmp_path / name / "00_설명서.md").write_text("# 나쁨\n", encoding="utf-8")
    pages = read_guide(tmp_path)
    assert [p["page"] for p in pages] == ["B01", "B05", "E02"]  # D01 = 글 없음 · 나쁜 폴더 뺌
    assert [p["title"] for p in pages] == ["대시보드", "종단 설계", "E02"]
    assert [i["key"] for i in pages[1]["items"]] == ["00_설명서"]  # `_` 파일 · 그림은 항목 아님


def test_real_guide_reads_all_pages():
    pages = {p["page"] for p in read_guide()}
    assert {"B02", "B05", "B06", "D01", "E02", "E07"} <= pages


@pytest.mark.parametrize("page", ["../B05", "b05", "B5", "C01", "B05/..", "..", "B100"])
def test_bad_page_refused(page):
    with pytest.raises(HTTPException):
        read_help(page)


def test_missing_page_opens_empty(tmp_path):
    assert read_help("D02", tmp_path) == [] and read_help("B10", tmp_path) == []


def test_root_is_a05_guide():
    assert HELP_ROOT.parts[-2:] == ("A05_EduDetail", "guide")
    assert HELP_ROOT.is_dir()
    assert not (Path(HELP_ROOT).parents[1] / "resources" / "help").exists()