music-kraken-core/music_kraken/objects/artwork.py

78 lines
2.7 KiB
Python

from __future__ import annotations
from typing import Dict, List, Optional, Set, Tuple, Type, TypedDict, Union
from ..utils.config import main_settings
from ..utils.string_processing import hash_url, unify
from .collection import Collection
from .metadata import ID3Timestamp
from .metadata import Mapping as id3Mapping
from .metadata import Metadata
from .parents import OuterProxy as Base
class ArtworkVariant(TypedDict):
url: str
width: int
height: int
deviation: float
class Artwork:
def __init__(self, *variants: List[ArtworkVariant], parent_artworks: Set[Artwork] = None) -> None:
self.parent_artworks: Set[Artwork] = parent_artworks or set()
self._variant_mapping: Dict[str, ArtworkVariant] = {}
for variant in variants:
self.append(**variant)
@staticmethod
def _calculate_deviation(*dimensions: List[int]) -> float:
return sum(abs(d - main_settings["preferred_artwork_resolution"]) for d in dimensions) / len(dimensions)
def append(self, url: str, width: int = main_settings["preferred_artwork_resolution"], height: int = main_settings["preferred_artwork_resolution"], **kwargs) -> None:
if url is None:
return
self._variant_mapping[hash_url(url=url)] = {
"url": url,
"width": width,
"height": height,
"deviation": self._calculate_deviation(width, height),
}
@property
def flat_empty(self) -> bool:
return len(self._variant_mapping.keys()) <= 0
def _get_best_from_list(self, artwork_variants: List[ArtworkVariant]) -> Optional[ArtworkVariant]:
return min(artwork_variants, key=lambda x: x["deviation"])
@property
def best_variant(self) -> ArtworkVariant:
if self.flat_empty:
return self._get_best_from_list([parent.best_variant for parent in self.parent_artworks])
return self._get_best_from_list(self._variant_mapping.values())
def get_variant_name(self, variant: ArtworkVariant) -> str:
return f"artwork_{variant['width']}x{variant['height']}_{hash_url(variant['url']).replace('/', '_')}"
def __merge__(self, other: Artwork, **kwargs) -> None:
self.parent_artworks.update(other.parent_artworks)
for key, value in other._variant_mapping.items():
if key not in self._variant_mapping:
self._variant_mapping[key] = value
def __hash__(self) -> int:
return id(self)
def __eq__(self, other: Artwork) -> bool:
if hash(self) == hash(other):
return True
if not isinstance(other, Artwork):
return False
return any(a == b for a, b in zip(self._variant_mapping.keys(), other._variant_mapping.keys()))