"""D3 模型拆分归属保护（批次 4，2026-09-17）。

锁定三个拆分成果：
1. 三包模型全量注册后 mapper 可配置、31 表齐全；
2. 单模块部署（inventory-only / moldinsight-only + auth）独立配置 mapper 成功——
   跨模块 ORM relationship 已清零，任何一侧不注册对方模型也能工作；
3. 旧 shared.models.database 模块已删除且无兼容 facade（诚实原则：不留假象）。
"""
import importlib
import subprocess
import sys
from pathlib import Path

SRC = str(Path(__file__).resolve().parent.parent / "src")

EXPECTED_TABLES = {
    # identity（shared.models.identity）
    "users", "roles", "permissions", "user_roles", "role_permissions",
    "user_activities", "system_logs",
    # moldinsight.models
    "stp_files", "geometry_data", "mesh_data", "html_files", "processing_tasks",
    "mold_cavity_data", "feature_detections", "design_recommendations", "analysis_metrics",
    # inventory.models
    "products", "product_materials", "material_price_history", "material_suppliers",
    "suppliers", "customers", "warehouses", "inventory", "stock_movements",
    "purchase_orders", "purchase_order_items", "sales_orders", "sales_order_items",
    "finance_transactions", "finance_allocations",
}


def test_full_registration_covers_all_31_tables():
    import shared.models.identity  # noqa: F401
    import moldinsight.models  # noqa: F401
    import inventory.models  # noqa: F401
    from sqlalchemy.orm import configure_mappers

    from shared.models.base import Base

    configure_mappers()
    assert set(Base.metadata.tables) == EXPECTED_TABLES


def test_single_module_deployments_configure_mappers_independently():
    """单模块注册子进程验证：inventory-only 与 moldinsight-only（含 auth identity）
    均可在不 import 对方业务模型的情况下 configure_mappers 成功。
    用子进程隔离，避免污染本进程的 mapper 注册表。"""
    code = (
        "import sys; sys.path.insert(0, r'%s')\n"
        "from sqlalchemy.orm import configure_mappers\n"
        "%s\n"
        "configure_mappers()\n"
        "print('ok')\n"
    )
    cases = [
        # inventory-only：inventory 模型 + auth 必带的 identity
        "import inventory.models, shared.models.identity",
        # moldinsight-only：moldinsight 模型 + auth 必带的 identity
        "import moldinsight.models, shared.models.identity",
    ]
    for imports in cases:
        proc = subprocess.run(
            [sys.executable, "-c", code % (SRC, imports)],
            capture_output=True, text=True, timeout=120,
        )
        assert proc.returncode == 0, f"{imports} 配置失败:\n{proc.stderr}"
        assert proc.stdout.strip().endswith("ok")


def test_legacy_database_module_is_gone():
    """旧 shared.models.database 已物理删除，无兼容 facade。"""
    try:
        importlib.import_module("shared.models.database")
    except ModuleNotFoundError:
        pass
    else:
        raise AssertionError("shared.models.database 仍可导入——拆分后不允许残留兼容 facade")