34 lines
959 B
Python
34 lines
959 B
Python
"""Base entity for DDD domain layer."""
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from abc import ABC, abstractmethod
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from dataclasses import dataclass, field
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from datetime import UTC, datetime
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from typing import Any
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from uuid import UUID, uuid4
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@dataclass(kw_only=True)
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class BaseEntity(ABC):
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"""Base class for all domain entities."""
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id: UUID = field(default_factory=uuid4)
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created_at: datetime = field(default_factory=lambda: datetime.now(UTC))
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updated_at: datetime = field(default_factory=lambda: datetime.now(UTC))
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def __eq__(self, other: object) -> bool:
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if not isinstance(other, BaseEntity):
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return NotImplemented
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return self.id == other.id
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def __hash__(self) -> int:
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return hash(self.id)
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def touch(self) -> None:
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"""Update the updated_at timestamp."""
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self.updated_at = datetime.now(UTC)
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@abstractmethod
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def to_dict(self) -> dict[str, Any]:
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"""Convert entity to dictionary."""
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...
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