"""
待删除物料查询组件
从数据库查询指定负责人需要删除的物料编码
"""

from typing import List, Dict, Any, Optional
from db.connection import get_connection


def get_materials_to_delete(manager_name):
    """
    根据负责人名称查询待删除物料编码列表

    Args:
        manager_name: 负责人姓名

    Returns:
        物料编码列表
    """
    query = """
        SELECT [MaterialCode]
        FROM [dbo].[MaterialsToBeDeleted]
        WHERE [ManagerName] = ?
    """

    with get_connection() as conn:
        results = conn.execute_query(query, (manager_name,))
        # 提取物料编码并去除空值
        material_codes = [row["MaterialCode"] for row in results if row["MaterialCode"]]
        return material_codes


def get_all_materials_to_delete() -> List[Dict[str, Any]]:
    """
    获取所有待删除物料记录

    Returns:
        List[Dict[str, Any]]: 包含MaterialCode和ManagerName的记录列表
    """
    query = """
        SELECT [MaterialCode], [ManagerName]
        FROM [dbo].[MaterialsToBeDeleted]
        WHERE [MaterialCode] IS NOT NULL
        ORDER BY [ManagerName], [MaterialCode]
    """

    with get_connection() as conn:
        results = conn.execute_query(query)
        return results


def get_materials_to_delete_by_managers(
    manager_names: Optional[List[str]] = None,
) -> List[str]:
    """
    根据负责人列表查询待删除物料编码

    Args:
        manager_names: 负责人姓名列表
            - None 或空列表：返回所有物料编码
            - 有值：返回指定负责人的物料编码

    Returns:
        物料编码列表
    """
    if not manager_names:
        # 查询所有物料编码
        query = """
            SELECT [MaterialCode]
            FROM [dbo].[MaterialsToBeDeleted]
            WHERE [MaterialCode] IS NOT NULL
        """
        with get_connection() as conn:
            results = conn.execute_query(query)
            material_codes = [row["MaterialCode"] for row in results if row["MaterialCode"]]
            return material_codes
    else:
        # 使用 IN 子句查询多个负责人
        placeholders = ", ".join(["?"] * len(manager_names))
        query = f"""
            SELECT [MaterialCode]
            FROM [dbo].[MaterialsToBeDeleted]
            WHERE [MaterialCode] IS NOT NULL
              AND [ManagerName] IN ({placeholders})
        """
        with get_connection() as conn:
            results = conn.execute_query(query, tuple(manager_names))
            material_codes = [row["MaterialCode"] for row in results if row["MaterialCode"]]
            return material_codes


def should_delete_material(manager_name: str, material_code: str) -> bool:
    """
    检查指定物料编码是否需要删除

    直接在数据库层面查询，避免将大量数据加载到内存

    Args:
        manager_name: 负责人姓名
        material_code: 物料编码

    Returns:
        bool: 如果物料需要删除返回 True，否则返回 False
    """
    query = """
        SELECT COUNT(*) as count
        FROM [dbo].[MaterialsToBeDeleted]
        WHERE [ManagerName] = ?
          AND [MaterialCode] = ?
    """

    with get_connection() as conn:
        results = conn.execute_query(query, (manager_name, material_code))
        return results[0]["count"] > 0 if results else False