# app/models/chat_message.py
"""
HealthSync AI 채팅 메시지 모델
"""
from pydantic import BaseModel, Field
from datetime import datetime
from typing import Optional
from enum import Enum

class MessageType(str, Enum):
    """메시지 타입"""
    CONSULTATION = "consultation"   # 상담
    CELEBRATION = "celebration"     # 축하
    ENCOURAGEMENT = "encouragement" # 독려

class ChatMessage(BaseModel):
    """채팅 메시지 모델"""
    message_id: Optional[int] = Field(None, description="메시지 ID")
    member_serial_number: int = Field(..., description="회원 일련번호")
    message_type: str = Field(..., max_length=20, description="메시지 타입")
    message_content: Optional[str] = Field(None, description="메시지 내용")
    response_content: Optional[str] = Field(None, description="AI 응답 내용")
    created_at: datetime = Field(default_factory=datetime.now, description="생성일시")

    class Config:
        json_encoders = {
            datetime: lambda v: v.isoformat()
        }