webapp/app/schemas/order.py

# app/schemas/order.py
import json
from pydantic import BaseModel, field_validator
from typing import Optional, Dict, Any, Literal, List
from datetime import datetime

class VasOrderBase(BaseModel):
    status: Optional[Literal['pending','paid','completed','closed']] = None
    user_inputs: Optional[Dict[str, Any]] = None

    @field_validator("user_inputs", mode="before")
    def normalize_json_field(cls, v):
        if v is None:
            return None
        if isinstance(v, str):
            try:
                return json.loads(v)
            except Exception:
                return {}
        return v

class VasOrderCreate(BaseModel):
    product_id: int
    user_inputs: Dict[str, Any]
    
class VasOrderUpdate(VasOrderBase):
    pass

class VasOrderPatchUserInputs(BaseModel):
    user_inputs: Dict[str, Any]

class VasOrderOut(VasOrderBase):
    id: str
    user_id: str
    product_name: Optional[str]
    user_name: Optional[str]
    base_amount: int
    base_currency: str
    created_at: datetime
    updated_at: datetime
    model_config = {
        "from_attributes": True
    }