# bsv - Backup, Synchronization, Versioning
# Copyright (C) 2023  Simon Boyé
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
from __future__ import annotations

from dataclasses import dataclass


@dataclass(frozen=True, order=True, slots=True)
class Digest:
    digest: bytes = b""

    def __bool__(self) -> bool:
        return bool(self.digest)

    def __repr__(self) -> str:
        return self.digest.hex()


@dataclass(frozen=True, order=True, slots=True)
class ObjectInfo:
    digest: Digest
    object_type: bytes
    size: int

    def __repr__(self) -> str:
        return f"<{self.__class__.__name__} {self.digest} {self.object_type.decode()} {self.size}B>"


@dataclass(frozen=True, order=True, slots=True)
class Object(ObjectInfo):
    data: bytes