"""Drawing sheet -> DXF R2018 (ezdxf): Unicode text, layers, lineweights, hatches."""
import io
import os
import tempfile

import ezdxf
import pyogrio
import pytest
from fastapi.testclient import TestClient

from backend.batch import BatchError
from backend.drawing_dxf import drawing_to_dxf
from backend.main import app

DRAWING = {
    "width": 420, "height": 297, "title": "t",
    "items": [
        {"kind": "line", "layer": "FRAME", "pts": [[0, 0], [420, 0], [420, 297], [0, 297]], "closed": True, "width": 0.7},
        {"kind": "line", "layer": "HGL_1", "pts": [[50, 200], [300, 150]], "width": 0.45, "color": "#1d4ed8", "dash": "dashed"},
        {"kind": "fill", "layer": "LEGEND", "pts": [[10, 10], [30, 10], [30, 20], [10, 20]], "fill": "#ffffff", "opacity": 0.9},
        {"kind": "circle", "layer": "NODE", "x": 100, "y": 100, "r": 1.2, "fill": "#dc2626", "color": "#dc2626"},
        {"kind": "text", "layer": "TITLE", "x": 210, "y": 280, "text": "송수관로 수리 종단면도 ○ ‰ m³", "size": 7, "anchor": "middle", "vAnchor": "middle", "bold": True},
        {"kind": "text", "layer": "TABLE", "x": 60, "y": 60, "text": "J-101", "size": 2, "rotate": 90, "anchor": "middle", "vAnchor": "middle"},
    ],
}


def test_r2018_with_unicode_layers_and_styles():
    data = drawing_to_dxf(DRAWING)
    doc = ezdxf.read(io.StringIO(data.decode("utf-8")))
    assert doc.dxfversion == "AC1032" and doc.units == ezdxf.units.MM
    msp = doc.modelspace()
    texts = [e.dxf.text for e in msp.query("TEXT")]
    assert "송수관로 수리 종단면도 ○ ‰ m³" in texts
    hgl = msp.query('LWPOLYLINE[layer=="HGL_1"]')[0]
    assert hgl.dxf.linetype == "DASHED" and hgl.dxf.lineweight == 40 and hgl.rgb == (29, 78, 216)
    assert len(msp.query("HATCH")) == 1 and len(msp.query("CIRCLE")) == 1  # white mask box dropped
    assert {"FRAME", "HGL_1", "NODE", "TITLE", "TABLE"} <= {l.dxf.name for l in doc.layers}
    rotated = [e for e in msp.query("TEXT") if e.dxf.text == "J-101"][0]
    assert rotated.dxf.rotation == 90
    # GDAL (what GIS tools use) reads the Korean text back too.
    with tempfile.TemporaryDirectory() as tmp:
        p = os.path.join(tmp, "d.dxf")
        open(p, "wb").write(data)
        meta, _, _, fields = pyogrio.raw.read(p)
        gtexts = [t for t in fields[list(meta["fields"]).index("Text")] if t]
    assert any("송수관로" in t for t in gtexts)


def test_errors_and_endpoint():
    with pytest.raises(BatchError):
        drawing_to_dxf({"items": []})
    with TestClient(app) as c:
        r = c.post("/api/drawing/dxf", json={"drawing": DRAWING, "name": "종단면도"})
        assert r.status_code == 200 and b"AC1032" in r.content
        assert "송수관로".encode("utf-8") in r.content