"""M02 도면 양식 서버 길 — 자리표 키 목록 · 도각 파일 불러오기 (PLAN 10-3)."""

import io
import json
import re
from pathlib import Path

from fastapi import FastAPI
from fastapi.testclient import TestClient

from M02_MasterTemplete.M02_MasterTemplete_Router_Drawing import DRAWING_FIELDS, router

app = FastAPI()
app.include_router(router)
client = TestClient(app)


def test_fields_cover_system_placeholders():
    # 시스템 도면 양식에 박힌 자리표는 전부 키 목록에 있다 — 없으면 화면이 모르는 칸이 생긴다.
    keys = {key for key, _, _ in DRAWING_FIELDS}
    used = set()
    for path in Path("resources/master_template/drawing").glob("00_*.json"):
        text = json.dumps(json.loads(path.read_text(encoding="utf-8")), ensure_ascii=False)
        used |= {match.strip() for match in re.findall(r"\{\{\s*([^}]+?)\s*\}\}", text)}
    assert used and used <= keys, used - keys


def test_fields_without_project():
    response = client.get("/api/m02/drawing-fields")
    assert response.status_code == 200
    body = response.json()
    assert [item["key"] for item in body["fields"]] == [key for key, _, _ in DRAWING_FIELDS]
    assert body["values"] == {}


def test_import_rejects_other_files():
    response = client.post(
        "/api/m02/drawing-import", files={"file": ("a.txt", b"hello", "text/plain")}
    )
    assert response.status_code == 400
    assert "DXF" in response.json()["message"]


def test_import_dxf():
    import ezdxf

    document = ezdxf.new()
    document.modelspace().add_line((0, 0), (100, 50))
    stream = io.StringIO()
    document.write(stream)
    response = client.post(
        "/api/m02/drawing-import",
        files={"file": ("frame.dxf", stream.getvalue().encode("utf-8"), "application/dxf")},
    )
    assert response.status_code == 200, response.text
    body = response.json()
    assert body["entity_count"] == 1
    assert body["drawing"]["entities"][0]["type"] == "Line"


def test_import_garbage_is_400_not_500():
    for data in (b"garbage\x00\xff", b"", b"0\nSECTION\n2\nENTITIES\n0\nLINE\n10\nabc\n"):
        response = client.post(
            "/api/m02/drawing-import", files={"file": ("bad.dxf", data, "application/dxf")}
        )
        assert response.status_code == 400, (data, response.text)
        assert response.json()["message"]


def test_structure_frame_origin_at_zero():
    # 56장 — 구조물 도면에 얹는 도각: 외곽 좌하단 (0,0) · 잠금 도각 층 · 원본 양식은 그대로
    from B07_DesignDetail.B07_DesignDetail_Engine_Template import entities_bbox, template_entities

    before = entities_bbox(template_entities())
    body = client.get("/api/m02/structure-frame").json()
    x0, y0, x1, y1 = entities_bbox(body["entities"])
    assert abs(x0) < 1e-9 and abs(y0) < 1e-9
    assert abs((x1 - x0) - (before[2] - before[0])) < 1e-6
    assert body["layer"]["isLocked"] is True
    assert {e["layerId"] for e in body["entities"]} == {"m02-structure-frame"}
    assert body["layer"]["id"] == "m02-structure-frame"  # 불러온 DXF 층(b08-frame)과 갈림
    assert entities_bbox(template_entities()) == before