"""Types related to translation fetching."""
import typing as _t
from dataclasses import dataclass as _dataclass
from .. import types as _tt
from ..offline import types as _ot
[docs]
@_dataclass(frozen=True)
class IdsToFetch(_t.Generic[_tt.SourceType, _tt.IdType]):
"""A source and the IDs to fetch from it."""
source: _tt.SourceType
"""Where to fetch from."""
ids: set[_tt.IdType]
"""Unique IDs to fetch translations for."""
[docs]
@_dataclass(frozen=True)
class FetchInstruction(_t.Generic[_tt.SourceType, _tt.IdType]):
"""Instructions passed from an ``AbstractFetcher`` to an implementation."""
source: _tt.SourceType
"""Where to fetch from."""
placeholders: _ot.PlaceholdersTuple
"""All desired placeholders in preferred order."""
required: set[str]
"""Placeholders that must be included in the response."""
ids: set[_tt.IdType] | None
"""Unique IDs to fetch translations for."""
task_id: int
"""Used for logging purposes."""
enable_uuid_heuristics: bool
"""Improves matching when :py:class:`~uuid.UUID`-like IDs are in use.
Implementations which have no UUID heuristics may silently ignore this flag.
"""
@property
def fetch_all(self) -> bool:
"""If ``True``, retrieve all available data."""
return self.ids is None
FetchOperation = _t.Literal["FETCH", "FETCH_ALL"]
"""Key operation types for fetching."""
Operation = _t.Literal["INITIALIZE_SOURCES"] | FetchOperation
"""Key operation types for fetchers."""
