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70 lines
2.5 KiB
Python
70 lines
2.5 KiB
Python
from __future__ import annotations
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from datetime import datetime, timedelta
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import logging
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import math
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from typing import Optional, TypeVar
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from ...models import CollectionUriMapping, MediaCollection, MediaElement
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from ..generic import ExtractedData, ExtractionError, GeneralExtractor
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from ..media import media_extract_uri
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T = TypeVar("T")
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class CollectionExtractor(GeneralExtractor[MediaCollection, T]):
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@staticmethod
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def check_uri(uri: str) -> Optional[MediaCollection]:
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mapping: CollectionUriMapping = CollectionUriMapping.get(uri=uri)
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if mapping:
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return mapping.element
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elem: MediaCollection = MediaCollection.get(uri=uri)
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if elem:
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logging.warning(
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f"Add missing URI mapping entry for uri {uri!r}, " +
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"this should not happen at this point and is considered a bug"
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)
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elem.add_single_uri(uri)
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return elem
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return None
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@staticmethod
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def _calculate_wait_hours(
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last_release_date: datetime,
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growth_rate: float = 3.25508, # estimated for approriate cache timeout times (every 12 hours for 10 days old playlist)
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) -> timedelta:
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days_since = max((datetime.now() - last_release_date) // timedelta(days=1), 1)
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wait_units = math.log(days_since, growth_rate)
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wait_hours = (wait_units + 1) * 4
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return timedelta(hours=wait_hours)
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def __configure_collection(self, collection: MediaCollection) -> None:
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collection.keep_updated = True
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def _create_object(self, data: ExtractedData[T]) -> MediaCollection:
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collection = data.create_collection()
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self.__configure_collection(collection)
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return collection
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def _load_object(self, data: ExtractedData[T]) -> MediaCollection:
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collection = data.load_collection()
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if collection:
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self.__configure_collection(collection)
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return collection
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def _add_episode(self, collection: MediaCollection, uri: str, season: int = 0, episode: int = 0) -> Optional[MediaElement]:
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logging.debug(f"Add to collection {collection.title!r} media {uri!r} (Season {season}, Episode {episode})")
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try:
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element = media_extract_uri(uri)
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except ExtractionError:
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logging.warning(f"Failed while extracting media {uri!r}", exc_info=True)
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return None
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collection.add_episode(
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media = element,
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season = season,
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episode = episode,
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)
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return element
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