from email.policy import default
from settings import *
from middleware import UnicornException
import copy
import requests
from PIL import Image
from io import BytesIO
import base64
generate_templace = "/generate"
# CUSTOMER_TEMPLATE_URL
class CustomerTemplateService:
    def __init__(self):
        pass
    def generateTemplate(self,config_data,template_json):
        '''
        参数：
        config_data: 配置数据
        template_json: 模板数据
        '''
        print("开始生成模板")
        # print("config_data",config_data)
        handler_config_data = self.__handler_config_data(config_data)
        print("handler_config_data",handler_config_data)
        headers = {"Content-Type": "application/json"}
        json_data = {"goodsList":handler_config_data,"canvasList":template_json}
        json_data = json.dumps(json_data,ensure_ascii=False)
        # print("json_data",json_data)
        template_result = requests.post(CUSTOMER_TEMPLATE_URL+generate_templace,data=json_data,headers=headers)
        resultJson = template_result.json()
        code = resultJson.get("code")
        msg = resultJson.get("msg")
        images = resultJson.get("images",[])
        if code != 0:
            raise UnicornException(f"详情页生成失败,请检查模板数据是否正确:{msg}")
        for image in images:
            canvasIndex = image.get("canvasIndex")
            dataUrl = image.get("dataUrl")
            path = r"C:/Development/project/output/2025-12-05/详情图-测试"
            save_name = f"{path}/切片图-自定义-1/{int(canvasIndex)+1}.png"
            match dataUrl:
                case "model":
                    # 复制模特图进行拼接
                    pass
                case "scene":
                    # 复制场景图进行拼接
                    pass
                case _:
                    self.save_base64_image(dataUrl,save_name)
        print("模板生成成功")
    def __handler_config_data(self,config_data):
        '''
        处理配置数据，返回一个新的数据对象
        '''
        # 深拷贝原始数据，确保不改变原数据对象
        new_config_data = copy.deepcopy(config_data)
        
        # 如果输入是字典，则将其转换为目标结构
        if isinstance(new_config_data, dict):
            result = []
            for key, item in new_config_data.items():
                # 提取需要添加的数据
                additional_data = {k: v for k, v in item.items() if k not in ["款号", "货号资料"]}
                
                # 遍历货号资料，将额外数据添加到每个货号对象中
                for product in item.get("货号资料", []):
                    product.update(additional_data)
                
                # 构建目标结构
                result.append({key: item})
            return result
        
        return new_config_data
    def save_base64_image(self,base64_data, output_path):
        """
        将 Base64 编码的图像保存到本地文件

        参数：
        - base64_data: str，Base64 编码的图像数据（不包含前缀如 "data:image/png;base64,"）
        - output_path: str，保存图像的本地路径
        """
        if "data:image/jpeg;base64," in base64_data:
            base64_data = base64_data.split(",")[1]
        try:
            # 1. 解码 Base64 数据
            image_data = base64.b64decode(base64_data)
            
            # 2. 加载图像数据
            image = Image.open(BytesIO(image_data))
            # 3. 检查路径是否存在，如果不存在则创建
            directory = os.path.dirname(output_path)
            if directory and not os.path.exists(directory):
                os.makedirs(directory)
                print(f"目录已创建: {directory}")
            # 4. 保存图像到本地
            image.save(output_path)
            print(f"图像已成功保存到 {output_path}")
        except Exception as e:
            print(f"保存图像失败: {e}")
            print(f"Base64 数据前 100 字符: {base64_data[:100]}")