from pydantic import BaseModel
from typing import Optional, Literal, Dict, Any
from datetime import datetime


class VasTicketBase(BaseModel):
    status: Optional[
        Literal['pending', 'info_required', 'resolved', 'rejected']
    ] = None

    admin_comment: Optional[str] = None
    extra_fields: Optional[Dict[str, Any]] = None

class VasTicketCreate(BaseModel):
    order_id: str
    user_id: str

    type: Literal['refund', 'dispute', 'change_request']
    reason: Optional[str]
    extra_fields: Optional[Dict[str, Any]]

class VasTicketUpdate(VasTicketBase):
    pass

class VasTicketOut(VasTicketBase):
    id: int
    order_id: str
    user_id: str

    type: str
    reason: Optional[str]

    created_at: datetime
    updated_at: datetime

    class Config:
        orm_mode = True