models.py

from __future__ import annotations

from dataclasses import dataclass, field
from datetime import date
from typing import Optional


@dataclass
class Task:
    """Represents a single todo task."""

    id: int
    title: str
    priority: str = "Medium"
    category: str = "General"
    completed: bool = False
    created_at: str = field(default_factory=lambda: date.today().isoformat())
    due_date: Optional[str] = None

    def to_dict(self) -> dict:
        return {
            "id": self.id,
            "title": self.title,
            "priority": self.priority,
            "category": self.category,
            "completed": self.completed,
            "created_at": self.created_at,
            "due_date": self.due_date,
        }

    @classmethod
    def from_dict(cls, data: dict) -> "Task":
        return cls(
            id=data["id"],
            title=data["title"],
            priority=data.get("priority", "Medium"),
            category=data.get("category", "General"),
            completed=data.get("completed", False),
            created_at=data.get("created_at", date.today().isoformat()),
            due_date=data.get("due_date"),
        )