# -*- coding: utf-8 -*-
"""141-4 평면도 여러 장 — 노선 따라 자르기 유지 + 맞춤선 · 이웃 구간 흐리게 · 「n/N장」 · 돌린 맞춤 뺌."""

from __future__ import annotations

import math
from pathlib import Path

from B07_DesignDetail.B07_DesignDetail_Engine_Cad_Plan import (
    _chunk_span_m,
    plan_chunks,
    sheet_links,
)
from B07_DesignDetail.B07_DesignDetail_Engine_Cad_PlanKinds import (
    SHEET_LAYER,
    build_plan_kind_drawing,
)
from B07_DesignDetail.B07_DesignDetail_Router_Support_Plan import plan_kind_items

# 남북으로 곧은 노선 1,200 m · 측점 20 m
STATIONS = [(float(c), 0.0, float(c)) for c in range(0, 1201, 20)]


def test_돌린_맞춤_빼기_남북_노선은_그림칸_높이로_나눔():
    span_w, span_h = _chunk_span_m(1200)
    assert span_h < 800 < span_w  # 옛 규칙 = 돌려 보면 한 장(그림칸 높이를 넘침)
    chunks = plan_chunks(STATIONS[:41], 1200)  # 800 m
    assert len(chunks) == 2
    for chunk in chunks:
        assert chunk["end_m"] - chunk["start_m"] <= span_h


def test_맞춤선_경계_측점_직각_이웃_장_번호():
    chunks = plan_chunks(STATIONS, 1200)
    total = len(chunks)
    assert total == 3
    middle = chunks[1]
    box = (-300.0, middle["start_m"] - 10.0, 300.0, middle["end_m"] + 10.0)
    mm = 1000.0 / 1200
    links = sheet_links(STATIONS, middle, total, box, 20.0, mm, neighbors=True)
    first, last = links["lines"]
    start_no, end_no = int(middle["start_m"] // 20), int(middle["end_m"] // 20)
    assert first["label"] == f"MATCH LINE NO.{start_no} · 1장 이어짐"
    assert last["label"] == f"MATCH LINE NO.{end_no} · 3장 이어짐"
    (ax, ay), (bx, by) = first["points"]
    assert ay == by == middle["start_m"]  # 남북 노선에 직각 = 동서
    assert math.hypot(bx - ax, by - ay) * mm == 60.0  # 종이 60 mm
    # 이웃 구간 노선 = 도곽 안만(앞 · 뒤 10 m)
    assert len(links["neighbors"]) == 2
    for line in links["neighbors"]:
        assert all(box[1] <= y <= box[3] for _x, y in line)
    # 첫 장 · 끝 장은 한쪽만 · 중심선 안 고르면 이웃 노선 없음
    only = sheet_links(STATIONS, chunks[0], total, box, 20.0, mm, neighbors=False)
    assert [item["label"].endswith("· 2장 이어짐") for item in only["lines"]] == [True]
    assert only["neighbors"] == []


def test_도면에_맞춤선_층_글은_다른_글과_안_겹침():
    chunks = plan_chunks(STATIONS, 1200)
    middle = chunks[1]
    box = (-300.0, middle["start_m"] - 10.0, 300.0, middle["end_m"] + 10.0)
    mm = 1000.0 / 1200
    links = sheet_links(STATIONS, middle, 3, box, 20.0, mm, neighbors=True)
    at = middle["start_m"]
    pieces = {
        "sheet_links": links,
        # 맞춤선 글 자리에 시종점 글 후보가 처음 놓이는 견본
        "endpoints": {"items": [{"label": "시점 No.0", "x": 0.0, "y": at, "nx": 1.0, "ny": 0.0}]},
    }
    drawing = build_plan_kind_drawing("plan_x_2", "평면도(x) 2/3장", box, pieces, 1200)
    sheet = [e for e in drawing["entities"] if e["layerId"] == SHEET_LAYER]
    labels = sorted(e["shapeData"]["label"] for e in sheet if e["type"] == "Text")
    assert labels == [line["label"] for line in links["lines"]]
    assert any(layer["id"] == SHEET_LAYER for layer in drawing["layers"])
    assert sum(e["type"] == "PolyLine" for e in sheet) == 4  # 맞춤선 둘 + 이웃 노선 둘


def test_목록_도면명_n_N장(tmp_path: Path):
    stations = [{"chainage_m": c, "center_x": x, "center_y": y} for c, x, y in STATIONS]
    items = [
        i for i in plan_kind_items(tmp_path, {"stations": stations}) if i["plan_kind"] == "terrain"
    ]
    assert [item["label"] for item in items] == [f"평면도(지형) {n}/3장" for n in (1, 2, 3)]