重构后端服务架构并优化前端错误处理

fastapi-backend/app/models/order.py

@@ -0,0 +1,33 @@
+from sqlalchemy import Column, Integer, String, Float, Enum, DateTime, Text, func, ForeignKey
+from app.db.database import Base
+from enum import Enum as PyEnum
+
+class OrderStatus(str, PyEnum):
+    PENDING = "pending"
+    CONFIRMED = "confirmed"
+    PROCESSING = "processing"
+    SHIPPED = "shipped"
+    DELIVERED = "delivered"
+    CANCELLED = "cancelled"
+    COMPLETED = "completed"
+
+class Order(Base):
+    __tablename__ = "orders"
+    
+    id = Column(Integer, primary_key=True, index=True)
+    order_no = Column(String(32), unique=True, index=True, nullable=False)
+    buyer_id = Column(Integer, ForeignKey("users.id"), nullable=False)
+    seller_id = Column(Integer, ForeignKey("users.id"), nullable=False)
+    variety_type = Column(String(50), nullable=False)
+    weight_range = Column(String(50), nullable=False)
+    weight_actual = Column(Float, nullable=True)
+    price_per_unit = Column(Float, nullable=False)
+    total_price = Column(Float, nullable=False)
+    advance_payment = Column(Float, nullable=False, default=0.0)
+    final_payment = Column(Float, nullable=False, default=0.0)
+    status = Column(Enum(OrderStatus), default=OrderStatus.PENDING, nullable=False)
+    delivery_address = Column(Text, nullable=True)
+    delivery_time = Column(DateTime, nullable=True)
+    remark = Column(Text, nullable=True)
+    created_at = Column(DateTime, default=func.now(), nullable=False)
+    updated_at = Column(DateTime, default=func.now(), onupdate=func.now(), nullable=False)

fastapi-backend/app/models/payment.py

@@ -0,0 +1,33 @@
+from sqlalchemy import Column, Integer, String, Float, Enum, DateTime, ForeignKey, func
+from app.db.database import Base
+from enum import Enum as PyEnum
+
+class PaymentType(str, PyEnum):
+    ADVANCE = "advance"
+    FINAL = "final"
+
+class PaymentMethod(str, PyEnum):
+    WECHAT = "wechat"
+    ALIPAY = "alipay"
+    BANK = "bank"
+
+class PaymentStatus(str, PyEnum):
+    PENDING = "pending"
+    SUCCESS = "success"
+    FAILED = "failed"
+    REFUNDED = "refunded"
+
+class Payment(Base):
+    __tablename__ = "payments"
+    
+    id = Column(Integer, primary_key=True, index=True)
+    order_id = Column(Integer, ForeignKey("orders.id"), nullable=False)
+    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
+    payment_no = Column(String(32), unique=True, index=True, nullable=False)
+    amount = Column(Float, nullable=False)
+    payment_type = Column(Enum(PaymentType), nullable=False)
+    payment_method = Column(Enum(PaymentMethod), nullable=False)
+    status = Column(Enum(PaymentStatus), default=PaymentStatus.PENDING, nullable=False)
+    transaction_id = Column(String(128), nullable=True)
+    created_at = Column(DateTime, default=func.now(), nullable=False)
+    updated_at = Column(DateTime, default=func.now(), onupdate=func.now(), nullable=False)

fastapi-backend/app/models/user.py

@@ -0,0 +1,36 @@
+from sqlalchemy import Column, Integer, String, Enum, DateTime, func
+from app.db.database import Base
+from passlib.context import CryptContext
+from enum import Enum as PyEnum
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+class UserType(str, PyEnum):
+    CLIENT = "client"
+    SUPPLIER = "supplier"
+    DRIVER = "driver"
+    STAFF = "staff"
+    ADMIN = "admin"
+
+class UserStatus(str, PyEnum):
+    ACTIVE = "active"
+    INACTIVE = "inactive"
+    LOCKED = "locked"
+
+class User(Base):
+    __tablename__ = "users"
+    
+    id = Column(Integer, primary_key=True, index=True)
+    uuid = Column(String(36), unique=True, index=True, nullable=False)
+    username = Column(String(50), unique=True, index=True, nullable=False)
+    password_hash = Column(String(128), nullable=False)
+    user_type = Column(Enum(UserType), default=UserType.CLIENT, nullable=False)
+    status = Column(Enum(UserStatus), default=UserStatus.ACTIVE, nullable=False)
+    created_at = Column(DateTime, default=func.now(), nullable=False)
+    updated_at = Column(DateTime, default=func.now(), onupdate=func.now(), nullable=False)
+    
+    def verify_password(self, plain_password):
+        return pwd_context.verify(plain_password, self.password_hash)
+    
+    def set_password(self, plain_password):
+        self.password_hash = pwd_context.hash(plain_password)