from pydantic import BaseModel, Field
from datetime import datetime
from uuid import UUID

class MessageBase(BaseModel):
    text: str = Field(..., min_length=1, max_length=1000, description="Message text content")

class MessageCreate(MessageBase):
    class Config:
        schema_extra = {
            "example": {
                "text": "Hello, this is a sample message"
            }
        }

class Message(MessageBase):
    id: UUID
    created_at: datetime
    updated_at: datetime

    class Config:
        orm_mode = True
        schema_extra = {
            "example": {
                "id": "550e8400-e29b-41d4-a716-446655440000",
                "text": "Hello, this is a sample message",
                "created_at": "2023-01-01T00:00:00",
                "updated_at": "2023-01-01T00:00:00"
            }
        }