from db import MongoDao
from data import BrandInfo, ProductInfo
import gradio as gr

product_dao = MongoDao("vbrand-ec")

class Service:
    product_map = {}
    @staticmethod
    def get_brand_list():
        """获取数据库中存储的品牌列表"""
        brand_list = product_dao.get_one_field_data("brandName")
        brand_list = list(dict.fromkeys(brand_list))
        
        return brand_list
    
    @staticmethod
    def get_init_state_product_list(brand_name):
        """获取初始状态下的产品列表"""
        brand_info = BrandInfo(brand_name)
        prodct_titles = [p.title for p in brand_info.product_list]
        Service.product_map[brand_name] = brand_info.product_list
        return prodct_titles
    
    @staticmethod
    def on_brand_change(brand_name):
        """加载选定品牌的所有商品"""
        brand_info = BrandInfo(brand_name)
        produt_titles = [p.title for p in brand_info.product_list]
        Service.product_map[brand_name] = brand_info.product_list
        return gr.update(choices=produt_titles, value=produt_titles[0])
    
    @staticmethod
    def on_product_change(title, brand_name):
        product_list = Service.product_map.get(brand_name, [])
        product = next((p for p in product_list if p.title == title), None)
        if not product:
            return [], [["商品未找到", ""]]
        
        # 加载图片
        images = [image_url for image_url in product.iamges]
        
        # 产品信息
        info = [
            ["商品链接", product.url],
            ["平台", product.platFormName],
            ["商户名称", product.shopTitle],
            ["颜色", product.colors],
            ["尺寸", product.sizes],
            ["价格", product.price],
        ]
        
        return images, info
    

if __name__ == "__main__":
    brand_list = Service.get_brand_list()
    print(brand_list)