from __future__ import annotations

import os
from copy import deepcopy
from pathlib import Path

import pytest
from fastapi.testclient import TestClient

from server.aps_domain.drawing_dxf import build_drawing_master_candidates, inspect_dxf
from server.gateway.app import create_app
from server.state.seed import seed_world


_DEFAULT_SAMPLE = Path(r"D:\ItemSpace\14.工业智核\锐扬\5060102101-001-e(1).dxf")


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 _master_snapshot(world: dict) -> dict:
    return {
        key: deepcopy(world.get(key, []))
        for key in ("materials", "boms", "bom", "routing", "routings", "operations")
    }


def test_dxf_candidates_are_review_only_and_do_not_mutate_master_data():
    world = seed_world()
    before = _master_snapshot(world)

    candidates = build_drawing_master_candidates(inspect_dxf(_sample_dxf()))

    assert candidates["contractVersion"] == "drawing-master-candidates.v1"
    assert candidates["status"] == "PENDING_REVIEW"
    assert candidates["reviewRequired"] is True
    assert candidates["materials"]
    assert candidates["materials"][0]["code"] == "5060102101-001"
    assert candidates["materials"][0]["reviewRequired"] is True
    assert candidates["bomReferences"]
    assert all(row["resolutionStatus"] == "UNRESOLVED" for row in candidates["bomReferences"])
    assert all(row["quantity"] is None for row in candidates["bomReferences"])
    assert candidates["routingOperations"]
    assert all(row["standardTime"] is None and row["resourceCode"] is None
               for row in candidates["routingOperations"])
    assert _master_snapshot(world) == before, "解析和候选生成阶段不得直接写主数据"


def test_dxf_p2_confirmation_is_required_before_master_commit_contract():
    app = create_app()
    paths = app.openapi().get("paths", {})
    stage_path = "/api/drawings/{drawing_id}/stage"
    confirm_path = "/api/actions/confirm"
    if stage_path not in paths or confirm_path not in paths:
        pytest.skip(
            "依赖未合并：需要 Drawing stage 接口接入现有 P2 /api/actions/confirm 通道，"
            "并在确认前保持主数据不变、确认后原子提交变更集。"
        )

    client = TestClient(app)
    inspect_resp = client.post("/api/drawings/inspect", json={"path": str(_sample_dxf())})
    if inspect_resp.status_code in (401, 403):
        pytest.skip("Drawing API 已存在但测试认证装配尚未接入；需复用 tests.auth_provider")
    assert inspect_resp.status_code == 200, inspect_resp.text
    parsed = inspect_resp.json().get("parsed") or inspect_resp.json().get("drawing") or inspect_resp.json()
    drawing_id = parsed["asset"]["id"]

    stage = client.post(f"/api/drawings/{drawing_id}/stage", json={})
    assert stage.status_code == 200, stage.text
    staged = stage.json()
    assert staged["status"] in {"staged", "PENDING_REVIEW"}
    assert staged.get("confirmId"), "候选必须生成 P2 确认卡"
    assert staged.get("masterCommitted", False) is False

    confirm = client.post("/api/actions/confirm", json={
        "confirmId": staged["confirmId"],
        "approve": True,
    })
    assert confirm.status_code == 200, confirm.text
    result = confirm.json()
    assert result.get("approved", True) is True
    assert result.get("masterCommitted", True) is True