🛒 跨境电商

# 多语言多货币支持示例
class LocalizationManager:
    def __init__(self):
        self.supported_languages = ["en", "zh", "ja", "ko", "de", "fr"]
        self.supported_currencies = ["USD", "EUR", "CNY", "JPY", "KRW"]
    
    def detect_user_locale(self, user_ip, accept_language_header):
        detected_lang = parse_accept_language(accept_language_header)
        detected_country = ip_to_country(user_ip)
        
        # 根据国家推荐货币
        recommended_currency = country_to_currency(detected_country)
        
        return {
            "language": detected_lang,
            "currency": recommended_currency,
            "country": detected_country
        }
    
    def localize_product_info(self, product, user_locale):
        localized_product = {}
        # 本地化产品名称
        localized_product["name"] = translate(
            product.name, 
            source_lang="en", 
            target_lang=user_locale["language"]
        )
        
        # 本地化价格
        localized_product["price"] = convert_currency(
            product.price_usd, 
            from_currency="USD", 
            to_currency=user_locale["currency"]
        )
        
        return localized_product
                    

# 物流跟踪管理
class LogisticsTracker:
    def __init__(self):
        self.carriers = {
            "DHL": DHL_API(),
            "FedEx": FedEx_API(),
            "UPS": UPS_API(),
            "USPS": USPS_API()
        }
    
    def track_shipment(self, tracking_number, carrier_code):
        carrier_api = self.carriers.get(carrier_code)
        if not carrier_api:
            raise ValueError(f"Unsupported carrier: {carrier_code}")
        
        tracking_data = carrier_api.get_tracking_info(tracking_number)
        
        # 更新订单物流状态
        update_order_logistics_status(
            tracking_number, 
            tracking_data.status, 
            tracking_data.location
        )
        
        # 预计送达时间计算
        estimated_delivery = calculate_estimated_arrival(
            tracking_data.origin, 
            tracking_data.destination, 
            shipping_method
        )
        
        return {
            "current_status": tracking_data.status,
            "location": tracking_data.location,
            "estimated_delivery": estimated_delivery,
            "delivery_history": tracking_data.history
        }
                    

# 合规税务管理示例
class ComplianceManager:
    def __init__(self):
        self.tax_rules_db = load_tax_rules_database()
        self.regulations_db = load_regulations_database()
    
    def calculate_taxes(self, order, destination_country):
        # 获取目的地国家税率
        vat_rate = get_vat_rate(destination_country)
        import_duty = get_import_duty_rate(
            product_category=order.product.category,
            destination_country=destination_country
        )
        
        # 计算税费
        subtotal = order.product.price * order.quantity
        vat_amount = subtotal * vat_rate
        duty_amount = subtotal * import_duty
        total_taxes = vat_amount + duty_amount
        
        return {
            "vat_rate": vat_rate,
            "import_duty_rate": import_duty,
            "vat_amount": vat_amount,
            "duty_amount": duty_amount,
            "total_taxes": total_taxes
        }
    
    def generate_compliance_docs(self, shipment):
        # 商业发票
        commercial_invoice = create_commercial_invoice(
            sender=shipment.sender,
            recipient=shipment.recipient,
            items=shipment.items,
            total_value=shipment.total_value
        )
        
        # 装箱单
        packing_list = create_packing_list(
            shipment_id=shipment.id,
            items=shipment.items
        )
        
        # 原产地证书（如需要）
        certificate_of_origin = None
        if requires_certificate_of_origin(shipment.destination_country):
            certificate_of_origin = apply_for_certificate(shipment.items)
        
        return {
            "commercial_invoice": commercial_invoice,
            "packing_list": packing_list,
            "certificate_of_origin": certificate_of_origin
        }