from sqlalchemy import Integer, Column, DateTime, String

from util.database import Base


class Class(Base):
    """对应 Excel Sheet：班级表。"""

    __tablename__ = "wl_class"

    id = Column(Integer, primary_key=True, autoincrement=True, comment="id")
    class_number = Column(String(50), comment="班级编号")
    name = Column(String(100), comment="班级名字")
    start_date = Column(DateTime, comment="开班时间")
    planned_end_date = Column(DateTime, comment="计划结课时间")
    actual_end_date = Column(DateTime, comment="实际结课时间")
    created_at = Column(DateTime, comment="数据创建时间")
    updated_at = Column(DateTime, comment="数据更新时间")
    is_deleted = Column(default=False, nullable=False, comment="逻辑删除字段")