from sqlalchemy import Column, Integer, String, DateTime, ForeignKey, Enum, DECIMAL, JSON
from sqlalchemy.sql import func
from pydantic import BaseModel, Field
from typing import Optional, List
from datetime import datetime
from .database import Base
import enum

class AdditionalFeeResult(str, enum.Enum):
    PENDING = "PENDING"     # 待处理
    ACCEPTED = "ACCEPTED"   # 已接受
    REJECTED = "REJECTED"   # 已拒绝

class OrderAdditionalFeeDB(Base):
    __tablename__ = "order_additional_fees"

    id = Column(Integer, primary_key=True, autoincrement=True)
    orderid = Column(String(32), ForeignKey("shipping_orders.orderid"), nullable=False, index=True)
    fee_order_id = Column(String(32), nullable=False, unique=True)  # 子订单号，用于支付标识
    order_user_id = Column(Integer, ForeignKey("users.userid"), nullable=False)
    deliveryman_id = Column(Integer, ForeignKey("users.userid"), nullable=False)
    reason = Column(String(200), nullable=False)
    photo_urls = Column(JSON, nullable=True)  # 存储照片URL的JSON数组
    additional_fee_amount = Column(DECIMAL(10, 2), nullable=False)
    result = Column(Enum(AdditionalFeeResult), nullable=False, default=AdditionalFeeResult.PENDING)
    create_time = Column(DateTime(timezone=True), server_default=func.now())
    update_time = Column(DateTime(timezone=True), onupdate=func.now())
    transaction_id = Column(String(64), nullable=True)  # 微信支付交易号

# Pydantic 模型
class OrderAdditionalFeeCreate(BaseModel):
    orderid: str
    reason: str = Field(..., max_length=200)
    photo_urls: Optional[List[str]] = None
    additional_fee_amount: float = Field(..., gt=0)

class OrderAdditionalFeeUpdate(BaseModel):
    id: int
    reason: str
    photo_urls: Optional[List[str]]
    additional_fee_amount: float

class OrderAdditionalFeeInfo(BaseModel):
    id: int
    orderid: str
    order_user_id: int
    deliveryman_id: int
    deliveryman_name: Optional[str] = None
    deliveryman_phone: Optional[str] = None
    deliveryman_avatar: Optional[str] = None
    reason: str
    photo_urls: Optional[List[str]]
    additional_fee_amount: float
    result: AdditionalFeeResult
    create_time: datetime
    update_time: Optional[datetime] = None
    
    class Config:
        from_attributes = True