86 lines
2.4 KiB
Python
86 lines
2.4 KiB
Python
import dataclasses
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from collections.abc import Iterator
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from typing import Self
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from folkugat_web.model.temes import Tema
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from folkugat_web.utils import groupby
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@dataclasses.dataclass
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class PlaylistEntry:
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id: int | None
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session_id: int
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set_id: int
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tema_id: int | None
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@dataclasses.dataclass
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class TemaInSet:
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id: int | None
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tema_id: int | None
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tema: Tema | None
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def to_playlist_entry(self, session_id: int, set_id: int) -> PlaylistEntry:
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return PlaylistEntry(
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id=self.id,
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session_id=session_id,
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set_id=set_id,
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tema_id=self.tema_id,
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)
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@classmethod
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def from_playlist_entry(cls, entry: PlaylistEntry) -> Self:
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return cls(id=entry.id, tema_id=entry.tema_id, tema=None)
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@dataclasses.dataclass
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class SetScore:
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img_url: str | None
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pdf_url: str | None
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@dataclasses.dataclass
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class Set:
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id: int
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temes: list[TemaInSet]
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score: SetScore | None
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def to_playlist_entries(self, session_id: int) -> Iterator[PlaylistEntry]:
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for tema_in_set in self.temes:
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yield tema_in_set.to_playlist_entry(
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session_id=session_id,
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set_id=self.id,
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)
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@classmethod
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def from_playlist_entries(cls, set_id: int, entries: list[PlaylistEntry]) -> Self:
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if any(entry.set_id != set_id for entry in entries):
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raise ValueError("All PlaylistEntries must have the same session_id")
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return cls(
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id=set_id,
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temes=[TemaInSet.from_playlist_entry(entry) for entry in sorted(entries, key=lambda e: e.id or 0)],
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score=None,
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)
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@dataclasses.dataclass
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class Playlist:
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session_id: int
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sets: list[Set]
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def to_playlist_entries(self) -> Iterator[PlaylistEntry]:
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for set_entry in self.sets:
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yield from set_entry.to_playlist_entries(session_id=self.session_id)
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@classmethod
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def from_playlist_entries(cls, session_id: int, entries: list[PlaylistEntry]) -> Self:
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if any(entry.session_id != session_id for entry in entries):
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raise ValueError("All PlaylistEntries must have the same session_id")
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return cls(
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session_id=session_id,
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sets=[
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Set.from_playlist_entries(set_id, set_entries)
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for set_id, set_entries in groupby(entries, key_fn=lambda e: e.set_id, group_fn=list)
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],
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)
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