from __future__ import annotations

from pathlib import Path

import pytest

from server.aps_domain.drawing_dxf import (
    build_drawing_master_candidates,
    inspect_dxf,
    render_dxf_preview,
)
from tests.external_data import external_dir

SAMPLE = external_dir("RUIYANG_DEMO_DIR", "ruiyang") / "5060102101-001-e(1).dxf"


@pytest.fixture(scope="module")
def parsed_sample():
    if not SAMPLE.exists():
        pytest.skip(f"real DXF fixture not available: {SAMPLE}")
    return inspect_dxf(SAMPLE)


def test_real_dxf_inspection_contract(parsed_sample):
    parsed = parsed_sample
    assert parsed["contractVersion"] == "drawing-dxf.v1"
    assert parsed["asset"]["sha256"] == "b9a5f5cdd62b2a4060a7ce03dfe4fc2d08ba0fcd017f4d1bec049363f4472d79"
    assert parsed["asset"]["id"] == "drawing_510289c4effd56ce1265"
    assert parsed["asset"]["idempotencyKey"] == f"drawing:{parsed['asset']['sha256']}"
    assert parsed["drawing"]["drawingNumber"] == "5060102101-001"
    assert parsed["drawing"]["revision"] == "e"
    assert parsed["drawing"]["metadata"]["acadVersion"] == "AC1015"
    assert parsed["drawing"]["modelspaceEntityCount"] == 9619
    assert parsed["entityStatistics"]["ARC"] == 6288
    assert parsed["entityStatistics"]["DIMENSION"] == 105
    assert len(parsed["texts"]) == 102
    assert len(parsed["dimensions"]) == 105
    assert len(parsed["layers"]) == 41
    assert parsed["drawing"]["bbox"]["width"] > 6000
    assert all("confidence" in row and "evidence" in row for row in parsed["fieldCandidates"])


def test_real_dxf_ids_are_idempotent(parsed_sample):
    again = inspect_dxf(SAMPLE)
    assert again["asset"]["id"] == parsed_sample["asset"]["id"]
    assert again["asset"]["sha256"] == parsed_sample["asset"]["sha256"]
    assert [row["id"] for row in again["texts"]] == [row["id"] for row in parsed_sample["texts"]]
    assert [row["id"] for row in again["dimensions"]] == [row["id"] for row in parsed_sample["dimensions"]]


def test_master_candidates_are_review_gated_and_do_not_invent_values(parsed_sample):
    candidates = build_drawing_master_candidates(parsed_sample)
    assert candidates["status"] == "PENDING_REVIEW"
    assert candidates["reviewRequired"] is True
    assert candidates["materials"][0]["code"] == "5060102101-001"
    assert candidates["materials"][0]["reviewRequired"] is True
    assert candidates["bomReferences"]
    assert all(row["quantity"] is None for row in candidates["bomReferences"])
    assert all(row["unit"] is None for row in candidates["bomReferences"])
    assert all(row["componentMaterialCode"] is None for row in candidates["bomReferences"])
    assert candidates["routingOperations"]
    assert all(row["standardTime"] is None for row in candidates["routingOperations"])
    assert all(row["resourceCode"] is None for row in candidates["routingOperations"])


def test_svg_preview_is_bounded_and_contains_no_active_or_external_content():
    if not SAMPLE.exists():
        pytest.skip(f"real DXF fixture not available: {SAMPLE}")
    svg = render_dxf_preview(SAMPLE)
    lowered = svg.lower()
    assert svg.startswith('<svg xmlns="http://www.w3.org/2000/svg"')
    assert len(svg.encode("utf-8")) < 5 * 1024 * 1024
    assert "<script" not in lowered
    assert "foreignobject" not in lowered
    assert "href=" not in lowered
    assert "http://" not in lowered.replace('xmlns="http://www.w3.org/2000/svg"', "")
    assert parsed_sha(SAMPLE) in svg


def test_rejects_non_dxf(tmp_path):
    path = tmp_path / "drawing.txt"
    path.write_text("not a drawing", encoding="utf-8")
    with pytest.raises(ValueError, match="Only an existing .dxf"):
        inspect_dxf(path)


def parsed_sha(path: Path) -> str:
    return inspect_dxf(path)["asset"]["sha256"]