创建一个在线商店，允许用户浏览和购买产品。

实现购物车功能，允许用户添加和管理购物车中的商品。
集成支付处理，以接受信用卡、PayPal、USDT、微信、等付款方式。
提供用户账户管理，包括订单历史和地址管理。
剩下的你可以给我一些建议

app/models.py

@@ -1,10 +1 @@
-from app import db
-
-class Demo(db.Model):
-    id = db.Column(db.Integer, primary_key=True)
-    info1 = db.Column(db.String(80), unique=True, nullable=False)
-    info2 = db.Column(db.String(120), unique=True, nullable=False)
-
-    def __init__(self, info1, info2):
-        self.info1 = info1
-        self.info2 = info2
+在`app/models.py`文件中创建以下类和方法：

app/routes.py

@@ -1,55 +1 @@
-from flask import request, jsonify
-from app import app, db
-from app.models import Demo
-
-# 添加用户
-@app.route('/demos', methods=['POST'])
-def add_demo():
-    data = request.get_json()
-    new_demo = Demo(info1=data['info1'], info2=data['info2'])
-    db.session.add(new_demo)
-    db.session.commit()
-    return jsonify({'message': 'Demo added successfully'})
-
-# 获取所有用户
-@app.route('/demos', methods=['GET'])
-def get_demos():
-    demos = Demo.query.all()
-    demo_list = []
-    for demo in demos:
-        demo_data = {'id': demo.id, 'info1': demo.info1, 'info2': demo.info2}
-        demo_list.append(demo_data)
-    return jsonify({'demos': demo_list})
-
-# 获取单个用户
-@app.route('/demos/<int:demo_id>', methods=['GET'])
-def get_demo(demo_id):
-    demo = Demo.query.get(demo_id)
-    if demo:
-        demo_data = {'id': demo.id, 'info1': demo.info1, 'info2': demo.info2}
-        return jsonify(demo_data)
-    return jsonify({'message': 'Demo not found'}), 404
-
-# 更新用户信息
-@app.route('/demos/<int:demo_id>', methods=['PUT'])
-def update_demo(demo_id):
-    demo = Demo.query.get(demo_id)
-    if not demo:
-        return jsonify({'message': 'Demo not found'}), 404
-
-    data = request.get_json()
-    demo.info1 = data['info1']
-    demo.info2 = data['info2']
-    db.session.commit()
-    return jsonify({'message': 'Demo updated successfully'})
-
-# 删除用户
-@app.route('/demos/<int:demo_id>', methods=['DELETE'])
-def delete_demo(demo_id):
-    demo = Demo.query.get(demo_id)
-    if not demo:
-        return jsonify({'message': 'Demo not found'}), 404
-
-    db.session.delete(demo)
-    db.session.commit()
-    return jsonify({'message': 'Demo deleted successfully'})
+在`app/routes.py`文件中创建以下方法：

app/utils.py

@@ -0,0 +1 @@
+在`app/utils.py`文件中创建以下方法：

app/views.py

@@ -0,0 +1,92 @@
+from flask import jsonify
+from app.services import (
+    get_product_info,
+    add_product_to_cart,
+    remove_product_from_cart,
+    update_cart_product_quantity,
+    checkout_and_select_payment_method,
+    get_order_history,
+    get_address,
+    update_address,
+    register,
+    login
+)
+
+def get_products():
+    product_info = get_product_info()
+    return jsonify(product_info)
+
+def add_to_cart():
+    # Get product details from request
+    product_id = request.json.get('product_id')
+    quantity = request.json.get('quantity')
+
+    # Add product to cart
+    add_product_to_cart(product_id, quantity)
+
+    return jsonify({'message': 'Product added to cart successfully'})
+
+def remove_from_cart():
+    # Get product details from request
+    product_id = request.json.get('product_id')
+
+    # Remove product from cart
+    remove_product_from_cart(product_id)
+
+    return jsonify({'message': 'Product removed from cart successfully'})
+
+def update_cart():
+    # Get product details from request
+    product_id = request.json.get('product_id')
+    quantity = request.json.get('quantity')
+
+    # Update product quantity in cart
+    update_cart_product_quantity(product_id, quantity)
+
+    return jsonify({'message': 'Cart updated successfully'})
+
+def checkout():
+    # Get payment method from request
+    payment_method = request.json.get('payment_method')
+
+    # Checkout and select payment method
+    checkout_and_select_payment_method(payment_method)
+
+    return jsonify({'message': 'Checkout successful'})
+
+def get_order_history():
+    order_history = get_order_history()
+    return jsonify(order_history)
+
+def get_address():
+    address = get_address()
+    return jsonify(address)
+
+def update_address():
+    # Get address details from request
+    address = request.json.get('address')
+
+    # Update address
+    update_address(address)
+
+    return jsonify({'message': 'Address updated successfully'})
+
+def register():
+    # Get user details from request
+    username = request.json.get('username')
+    password = request.json.get('password')
+
+    # Register new user account
+    register(username, password)
+
+    return jsonify({'message': 'Registration successful'})
+
+def login():
+    # Get user details from request
+    username = request.json.get('username')
+    password = request.json.get('password')
+
+    # Login user
+    login(username, password)
+
+    return jsonify({'message': 'Login successful'})