from __future__ import annotations

import os
import re
from pathlib import Path

import pytest
from fastapi.testclient import TestClient

from server.aps_domain.drawing_dxf import inspect_dxf, render_dxf_preview
from server.gateway.app import create_app


_DEFAULT_SAMPLE = Path(r"D:\ItemSpace\14.工业智核\锐扬\5060102101-001-e(1).dxf")
_FORBIDDEN_SVG = re.compile(r"<(?:script|foreignObject)\b|(?:href|xlink:href)\s*=|\bon\w+\s*=", re.I)


def _sample_dxf() -> Path:
    try:
        import ezdxf  # noqa: F401
    except ImportError as exc:
        pytest.skip(f"DXF 运行依赖未完整安装：{exc}; 需要 ezdxf 及其 fontTools 依赖")
    path = Path(os.environ.get("APS_DXF_SAMPLE", str(_DEFAULT_SAMPLE)))
    if not path.is_file():
        pytest.skip(f"真实 DXF 样例不存在：{path}；可通过 APS_DXF_SAMPLE 指定")
    return path


def test_real_dxf_metadata_entities_texts_and_dimensions_contract():
    parsed = inspect_dxf(_sample_dxf())

    drawing = parsed["drawing"]
    assert drawing["metadata"]["acadVersion"].startswith("AC")
    assert drawing["modelspaceEntityCount"] >= 9_000
    assert drawing["layerCount"] > 0
    assert drawing["bbox"]["width"] > 0
    assert drawing["bbox"]["height"] > 0
    assert sum(parsed["entityStatistics"].values()) == drawing["modelspaceEntityCount"]
    assert parsed["entityStatistics"].get("LINE", 0) > 0
    assert parsed["entityStatistics"].get("ARC", 0) > 0
    assert len(parsed["texts"]) >= 10
    assert all(row["text"] and row["evidence"].get("entityHandle") for row in parsed["texts"][:10])
    assert len(parsed["dimensions"]) >= 50
    assert any(row.get("measurement") is not None for row in parsed["dimensions"])
    assert any(row["field"] == "drawingNumber" and row["value"] == "5060102101-001"
               for row in parsed["fieldCandidates"])


def test_real_dxf_svg_preview_is_standalone_and_safe():
    svg = render_dxf_preview(_sample_dxf())

    assert svg.startswith("<svg ")
    assert svg.endswith("</svg>")
    assert "viewBox=" in svg
    assert "sourceSha256=" in svg
    assert "data-handle=" in svg
    assert len(svg.encode("utf-8")) <= 2_000_000
    assert not _FORBIDDEN_SVG.search(svg), "SVG 不得包含脚本、事件处理器或外部引用"


def test_drawing_http_api_contract_when_gateway_routes_are_merged(monkeypatch):
    sample = _sample_dxf()
    monkeypatch.setenv("APS_AUTH_ENABLED", "0")
    monkeypatch.setenv("APS_DRAWING_ALLOWED_ROOTS", str(sample.parent))
    app = create_app()
    paths = app.openapi().get("paths", {})
    required = {"/api/drawings/inspect", "/api/drawings/{drawing_id}", "/api/drawings/{drawing_id}/preview"}
    missing = sorted(required - set(paths))
    if missing:
        pytest.skip(f"依赖未合并：Drawing HTTP API 缺少 {missing}")

    client = TestClient(app)
    response = client.post("/api/drawings/inspect", json={"path": str(sample)})
    assert response.status_code == 200, response.text
    data = response.json()
    parsed = data.get("parsed") or data.get("drawing") or data
    asset = parsed["asset"]
    assert asset["kind"] == "DXF"
    assert parsed["drawing"]["drawingNumber"] == "5060102101-001"

    drawing_id = asset["id"]
    detail = client.get(f"/api/drawings/{drawing_id}")
    assert detail.status_code == 200, detail.text
    preview = client.get(f"/api/drawings/{drawing_id}/preview")
    assert preview.status_code == 200, preview.text
    assert "<svg" in preview.text
    assert not _FORBIDDEN_SVG.search(preview.text)