# ===========================================
# 班级操行分管理系统 - 后端服务
# 
# 开发者: Canglan
# 联系方式: admin@sea-studio.top
# 版权归属: Sea Network Technology Studio
# 许可证: MIT License
# 
# 版权所有 © Sea Network Technology Studio
# ===========================================

from typing import Optional, Dict, Any, List
from utils.database import execute_one, execute_query, execute_insert, execute_update


class ClassModel:
    """班级数据模型"""
    
    @staticmethod
    async def get_by_id(class_id: int) -> Optional[Dict[str, Any]]:
        sql = "SELECT * FROM classes WHERE class_id = %s"
        return await execute_one(sql, (class_id,))
    
    @staticmethod
    async def get_all() -> List[Dict[str, Any]]:
        sql = "SELECT * FROM classes ORDER BY class_id"
        return await execute_query(sql)
    
    @staticmethod
    async def create(class_name: str, grade: str = None, academic_year: str = None) -> int:
        sql = """
            INSERT INTO classes (class_name, grade, academic_year)
            VALUES (%s, %s, %s)
        """
        return await execute_insert(sql, (class_name, grade, academic_year))