from sqlalchemy import Column, Integer, String, Text, DateTime
from sqlalchemy.sql import func, text
from database import Base

class Template(Base):
    __tablename__ = "templates"
    
    id = Column(Integer, primary_key=True, index=True, comment='主键ID')
    key = Column(String(50), nullable=False, server_default="", unique=True, index=True, comment='模板标识')
    name = Column(String(100), nullable=False, server_default="", comment='模板名称')
    description = Column(Text, nullable=False, default="", comment='模板描述')
    color = Column(String(20), nullable=False, server_default="#000000", comment='模板主色调')
    features = Column(Text, nullable=False, default="", comment='模板特性，JSON格式')
    applicable_scene = Column(Text, nullable=False, default="", comment='适用场景')
    regions = Column(Text, nullable=False, default="", comment='适用区域，JSON格式')
    select_count = Column(Integer, nullable=False, server_default="0", comment='被选择总次数')
    use_count = Column(Integer, nullable=False, server_default="0", comment='当前使用次数')
    status = Column(Integer, nullable=False, server_default="0", comment='状态：0-不可用，1-可用')
    created_at = Column(DateTime(timezone=True), nullable=False, server_default=text('CURRENT_TIMESTAMP'), comment='创建时间')
    updated_at = Column(DateTime(timezone=True), nullable=False, server_default=text('CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP'), comment='更新时间')