83 lines
3.0 KiB
Python
83 lines
3.0 KiB
Python
from ..data import data
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from ..modules import db
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from ..tools.logs import write
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from flask import flash
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from flask_login import current_user
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from werkzeug.utils import secure_filename
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from datetime import datetime
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from json import dump, loads
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from os import path, remove
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from uuid import uuid4
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class Dataset(db.Model):
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id = db.Column(db.String(36), primary_key=True)
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tests = db.relationship('Test', backref='dataset')
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creator_id = db.Column(db.String(36), db.ForeignKey('user.id'))
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date = db.Column(db.DateTime, nullable=False)
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default = db.Column(db.Boolean, default=False, nullable=True)
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def __repr__(self):
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return f'<Dataset {self.id}> was added.'
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@property
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def generate_id(self): raise AttributeError('generate_id is not a readable attribute.')
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generate_id.setter
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def generate_id(self): self.id = uuid4().hex
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def make_default(self):
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for dataset in Dataset.query.all():
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dataset.default = False
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self.default = True
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db.session.commit()
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write('system.log', f'Dataset {self.id} set as default by {current_user.get_username()}.')
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flash(message='Dataset set as default.', category='success')
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return True, f'Dataset set as default.'
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def delete(self):
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if self.default:
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message = 'Cannot delete the default dataset.'
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flash(message, 'error')
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return False, message
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if Dataset.query.all().count() == 1:
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message = 'Cannot delete the only dataset.'
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flash(message, 'error')
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return False, message
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write('system.log', f'Dataset {self.id} deleted by {current_user.get_username()}.')
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filename = secure_filename('.'.join([self.id,'json']))
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file_path = path.join(data, 'questions', filename)
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remove(file_path)
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db.session.delete(self)
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db.session.commit()
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return True, 'Dataset deleted.'
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def create(self, upload, default:bool=False):
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self.generate_id()
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timestamp = datetime.now()
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filename = secure_filename('.'.join([self.id,'json']))
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file_path = path.join(data, 'questions', filename)
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upload.stream.seek(0)
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questions = loads(upload.read())
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with open(file_path, 'w') as file:
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dump(questions, file, indent=2)
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self.date = timestamp
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self.creator = current_user
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if default: self.make_default()
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write('system.log', f'New dataset {self.id} added by {current_user.get_username()}.')
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db.session.add(self)
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db.session.commit()
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return True, 'Dataset uploaded.'
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def check_file(self):
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filename = secure_filename('.'.join([self.id,'json']))
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file_path = path.join(data, 'questions', filename)
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if not path.isfile(file_path): return False, 'Data file is missing.'
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return True, 'Data file found.'
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def get_file(self):
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filename = secure_filename('.'.join([self.id,'json']))
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file_path = path.join(data, 'questions', filename)
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return file_path |