from pydantic import BaseModel, Field
from typing import Optional
from uuid import UUID

class MessageBase(BaseModel):
    sender_id: UUID = Field(..., description="ID of the message sender")
    recipient_id: UUID = Field(..., description="ID of the message recipient")
    content: str = Field(..., min_length=1, description="Content of the message")
    is_read: bool = Field(default=False, description="Message read status")

class MessageCreate(MessageBase):
    class Config:
        schema_extra = {
            "example": {
                "sender_id": "123e4567-e89b-12d3-a456-426614174000",
                "recipient_id": "987fcdeb-51a2-43d7-9876-543210987654",
                "content": "Hello, how are you?",
                "is_read": False
            }
        }

class Message(MessageBase):
    id: UUID
    
    class Config:
        orm_mode = True
        schema_extra = {
            "example": {
                "id": "550e8400-e29b-41d4-a716-446655440000",
                "sender_id": "123e4567-e89b-12d3-a456-426614174000",
                "recipient_id": "987fcdeb-51a2-43d7-9876-543210987654",
                "content": "Hello, how are you?",
                "is_read": False
            }
        }