from sqlalchemy import Column, Integer, String, Float, DateTime, Text, func
from database import Base


class Inventory(Base):
    """库存表"""
    __tablename__ = "inventory"

    id = Column(Integer, primary_key=True, index=True, autoincrement=True, comment="序号")
    cInvCode = Column(String(100), nullable=False, index=True, comment="产品编码")
    supplier = Column(String(200), nullable=True, comment="供应商")
    casing_label_remark = Column(Text, nullable=True, comment="现外壳&标签&备注")
    batch = Column(String(100), nullable=True, comment="批次")
    current_remaining = Column(Float, default=0, comment="当前时间剩余")
    storage_location = Column(String(200), nullable=True, comment="存货地点")
    created_at = Column(DateTime, server_default=func.now(), comment="创建时间")
    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now(), comment="更新时间")


class TransactionLog(Base):
    """出入库记录表"""
    __tablename__ = "transaction_log"

    id = Column(Integer, primary_key=True, index=True, autoincrement=True)
    inventory_id = Column(Integer, nullable=False, index=True, comment="库存ID")
    cInvCode = Column(String(100), nullable=False, index=True, comment="产品编码")
    type = Column(String(10), nullable=False, comment="类型: in/out")
    quantity = Column(Float, nullable=False, comment="数量")
    remark = Column(Text, nullable=True, comment="备注")
    created_at = Column(DateTime, server_default=func.now(), comment="操作时间")