from sqlalchemy import Column, Integer, String, DateTime, Boolean, JSON
from sqlalchemy.sql import func
from pydantic import BaseModel, Field
from typing import Optional, List
from datetime import datetime
from .database import Base
from app.core.imageprocessor import process_image, ImageFormat

class PointProductDB(Base):
    __tablename__ = "point_products"

    id = Column(Integer, primary_key=True, autoincrement=True)
    name = Column(String(100), nullable=False)
    product_image = Column(String(200), nullable=False)
    tags = Column(String(100), nullable=True)  # 商品标签，JSON数组
    description = Column(String(500), nullable=False)
    point_amount = Column(Integer, nullable=False)  # 所需积分
    is_active = Column(Boolean, nullable=False, default=True)  # 是否上架
    create_time = Column(DateTime(timezone=True), server_default=func.now())
    update_time = Column(DateTime(timezone=True), onupdate=func.now())

    @property
    def optimized_product_image(self):
        """获取优化后的商品图片"""
        if self.product_image:
            return process_image(self.product_image).thumbnail(800, 800).format(ImageFormat.WEBP).build()
        return None

# Pydantic 模型
class PointProductCreate(BaseModel):
    name: str = Field(..., max_length=100)
    product_image: str = Field(..., max_length=200)
    tags: Optional[str] = None
    description: str = Field(..., max_length=500)
    point_amount: int = Field(..., gt=0)
    is_active: bool = Field(default=True)

class PointProductUpdate(BaseModel):
    name: Optional[str] = Field(None, max_length=100)
    product_image: Optional[str] = Field(None, max_length=200)
    tags: Optional[List[str]] = None
    description: Optional[str] = Field(None, max_length=500)
    point_amount: Optional[int] = Field(None, gt=0)
    is_active: Optional[bool] = None

class PointProductInfo(BaseModel):
    id: int
    name: str
    product_image: str
    optimized_product_image: Optional[str]
    tags: Optional[str]
    description: str
    point_amount: int
    is_active: bool
    create_time: datetime
    
    class Config:
        from_attributes = True