from __future__ import annotations

from dataclasses import dataclass
from pathlib import Path
from typing import Optional


@dataclass(slots=True)
class FileState:
    """Represents a single file inside a torrent."""

    torrent_hash: str
    torrent_name: str
    file_index: int
    name: str
    size: int
    downloaded: int
    progress: float
    priority: int
    remaining: int
    save_path: Path

    def full_path(self) -> Path:
        return (self.save_path / self.name).resolve()

    @property
    def is_complete(self) -> bool:
        return self.remaining <= 0 or self.progress >= 0.9999

    @property
    def is_downloading(self) -> bool:
        return not self.is_complete and self.priority > 0


@dataclass(slots=True)
class UploadTask:
    id: int
    torrent_hash: str
    file_index: int
    path: Path
    size: int
    tries: int
    last_error: Optional[str]