111 lines
3.9 KiB
Python
111 lines
3.9 KiB
Python
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import logging
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import os
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from typing import Generator
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from flask import current_app
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from .exceptions import NotFoundException
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from .instructions import BrickInstructions
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logger = logging.getLogger(__name__)
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# Lego sets instruction list
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class BrickInstructionsList(object):
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all: dict[str, BrickInstructions]
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rejected_total: int
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sets: dict[str, list[BrickInstructions]]
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sets_total: int
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unknown_total: int
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def __init__(self, /, force=False):
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# Load instructions only if there is none already loaded
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all = getattr(self, 'all', None)
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if all is None or force:
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logger.info('Loading instructions file list')
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BrickInstructionsList.all = {}
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BrickInstructionsList.rejected_total = 0
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BrickInstructionsList.sets = {}
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BrickInstructionsList.sets_total = 0
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BrickInstructionsList.unknown_total = 0
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# Try to list the files in the instruction folder
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try:
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# Make a folder relative to static
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folder: str = os.path.join(
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current_app.static_folder, # type: ignore
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current_app.config['INSTRUCTIONS_FOLDER'].value,
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)
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for file in os.scandir(folder):
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instruction = BrickInstructions(file)
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# Unconditionnally add to the list
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BrickInstructionsList.all[instruction.filename] = instruction # noqa: E501
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if instruction.allowed:
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if instruction.number:
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# Instantiate the list if not existing yet
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if instruction.number not in BrickInstructionsList.sets: # noqa: E501
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BrickInstructionsList.sets[instruction.number] = [] # noqa: E501
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BrickInstructionsList.sets[instruction.number].append(instruction) # noqa: E501
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BrickInstructionsList.sets_total += 1
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else:
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BrickInstructionsList.unknown_total += 1
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else:
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BrickInstructionsList.rejected_total += 1
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# Associate bricksets
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# Not ideal, to avoid a circular import
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from .set import BrickSet
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from .set_list import BrickSetList
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# Grab the generic list of sets
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bricksets: dict[str, BrickSet] = {}
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for brickset in BrickSetList().generic().records:
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bricksets[brickset.fields.set_num] = brickset
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# Return the files
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for instruction in self.all.values():
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# Inject the brickset if it exists
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if (
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instruction.allowed and
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instruction.number is not None and
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instruction.brickset is None and
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instruction.number in bricksets
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):
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instruction.brickset = bricksets[instruction.number]
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# Ignore errors
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except Exception:
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pass
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# Grab instructions for a set
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def get(self, number: str) -> list[BrickInstructions]:
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if number in self.sets:
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return self.sets[number]
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else:
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return []
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# Grab instructions for a file
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def get_file(self, name: str) -> BrickInstructions:
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if name not in self.all:
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raise NotFoundException('Instruction file {name} does not exist'.format( # noqa: E501
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name=name
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))
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return self.all[name]
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# List of all instruction files
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def list(self, /) -> Generator[BrickInstructions, None, None]:
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# Get the filenames and sort them
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filenames = list(self.all.keys())
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filenames.sort()
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# Return the files
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for filename in filenames:
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yield self.all[filename]
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