Lars Noack
cef87460a7
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126 lines
3.6 KiB
Python
126 lines
3.6 KiB
Python
from __future__ import annotations
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from dataclasses import dataclass
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from typing import TYPE_CHECKING, Dict, Generator, List, Tuple, Type, Union
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from ..objects import DatabaseObject
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if TYPE_CHECKING:
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from . import Page
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@dataclass
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class Option:
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index: int
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music_object: DatabaseObject
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class Results:
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def __init__(self, max_items_per_page: int = 10, **kwargs) -> None:
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self._by_index: Dict[int, DatabaseObject] = dict()
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self._page_by_index: Dict[int: Type[Page]] = dict()
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self.max_items_per_page = max_items_per_page
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def __iter__(self) -> Generator[DatabaseObject, None, None]:
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for option in self.formatted_generator():
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if isinstance(option, Option):
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yield option.music_object
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def formatted_generator(self) -> Generator[Union[Type[Page], Option], None, None]:
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self._by_index = dict()
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self._page_by_index = dict()
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def __len__(self) -> int:
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return max(self._by_index.keys())
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def __getitem__(self, index: int):
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return self._by_index[index]
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class SearchResults(Results):
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def __init__(
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self,
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pages: Tuple[Type[Page], ...] = None,
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**kwargs,
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) -> None:
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super().__init__(**kwargs)
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self.pages = pages or []
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# this would initialize a list for every page, which I don't think I want
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# self.results = Dict[Type[Page], List[DatabaseObject]] = {page: [] for page in self.pages}
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self.results: Dict[Type[Page], List[DatabaseObject]] = {}
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def add(self, page: Type[Page], search_result: List[DatabaseObject]):
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"""
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adds a list of found music objects to the according page
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WARNING: if a page already has search results, they are just gonna be overwritten
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"""
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self.results[page] = search_result
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def get_page_results(self, page: Type[Page]) -> "PageResults":
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return PageResults(page, self.results.get(page, []))
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def __len__(self) -> int:
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return sum(min(self.max_items_per_page, len(results)) for results in self.results.values())
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def formatted_generator(self):
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super().formatted_generator()
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i = 0
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for page in self.results:
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yield page
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j = 0
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for option in self.results[page]:
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yield Option(i, option)
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self._by_index[i] = option
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self._page_by_index[i] = page
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i += 1
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j += 1
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if j >= self.max_items_per_page:
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break
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class GoToResults(Results):
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def __init__(self, results: List[DatabaseObject], **kwargs):
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self.results: List[DatabaseObject] = results
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super().__init__(**kwargs)
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def __getitem__(self, index: int):
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return self.results[index]
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def __len__(self) -> int:
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return len(self.results)
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def formatted_generator(self):
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yield from (Option(i, o) for i, o in enumerate(self.results))
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class PageResults(Results):
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def __init__(self, page: Type[Page], results: List[DatabaseObject], **kwargs) -> None:
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super().__init__(**kwargs)
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self.page: Type[Page] = page
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self.results: List[DatabaseObject] = results
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def formatted_generator(self, max_items_per_page: int = 10):
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super().formatted_generator()
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i = 0
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yield self.page
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for option in self.results:
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yield Option(i, option)
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self._by_index[i] = option
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self._page_by_index[i] = self.page
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i += 1
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def __len__(self) -> int:
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return len(self.results)
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