from datetime import datetime
from typing import Optional
from pydantic import BaseModel, Field


class Alert(BaseModel):
    """MongoDB Alert model."""
    id: Optional[str] = Field(default=None, alias="_id")
    user_id: str  # Reference to user
    type: str  # water, fertilize, pest, health
    title: str
    description: str
    plantName: str
    plantId: str  # Reference to plant
    priority: str  # urgent, high, medium, low
    timestamp: str  # ISO datetime string
    isRead: bool = False
    created_at: datetime = Field(default_factory=datetime.utcnow)

    class Config:
        populate_by_name = True