import os
import pathlib
from json import dump, loads
from datetime import datetime, timedelta
from glob import glob
from random import shuffle
from werkzeug.utils import secure_filename
from .security.database import decrypt_find_one
def check_data_folder_exists():
from main import app
if not os.path.exists(app.config['DATA_FILE_DIRECTORY']):
pathlib.Path(app.config['DATA_FILE_DIRECTORY']).mkdir(parents='True', exist_ok='True')
def check_default_indicator():
from main import app
if not os.path.isfile(os.path.join(app.config['DATA_FILE_DIRECTORY'], '.default.txt')):
open(os.path.join(app.config['DATA_FILE_DIRECTORY'], '.default.txt'),'w').close()
def get_default_dataset():
check_default_indicator()
from main import app
default_file_path = os.path.join(app.config['DATA_FILE_DIRECTORY'], '.default.txt')
with open(default_file_path, 'r') as default_file:
default = default_file.read()
return default
def available_datasets():
from main import app
files = glob(os.path.join(app.config["DATA_FILE_DIRECTORY"],'*.json'))
default = get_default_dataset()
output = []
for file in files:
filename = file.rsplit('/')[-1]
label = f'{filename[:-5]} (Default)' if filename == default else filename[:-5]
element = (filename, label)
output.append(element)
output.reverse()
return output
def check_json_format(file):
if not '.' in file.filename:
return False
if not file.filename.rsplit('.', 1)[-1] == 'json':
return False
return True
def validate_json_contents(file):
file.stream.seek(0)
data = loads(file.read())
if not type(data) is dict:
return False
elif not all( key in data for key in ['meta', 'questions']):
return False
elif not type(data['meta']) is dict:
return False
elif not type(data['questions']) is list:
return False
return True
def store_data_file(file, default:bool=None):
from admin.views import get_id_from_cookie
from main import app
check_default_indicator()
timestamp = datetime.utcnow()
filename = '.'.join([timestamp.strftime('%Y%m%d%H%M%S'),'json'])
filename = secure_filename(filename)
file_path = os.path.join(app.config['DATA_FILE_DIRECTORY'], filename)
file.stream.seek(0)
data = loads(file.read())
data['meta']['timestamp'] = timestamp.strftime('%Y-%m-%d %H%M%S')
data['meta']['author'] = get_id_from_cookie()
data['meta']['tests'] = []
with open(file_path, 'w') as _file:
dump(data, _file, indent=2)
if default:
with open(os.path.join(app.config['DATA_FILE_DIRECTORY'], '.default.txt'), 'w') as _file:
_file.write(filename)
return filename
def randomise_list(list:list):
_list = list.copy()
shuffle(_list)
return(_list)
def generate_questions(dataset:dict):
questions_list = dataset['questions']
output = []
for block in randomise_list(questions_list):
if block['type'] == 'question':
question = {
'type': 'question',
'q_no': block['q_no'],
'question_header': '',
'text': block['text']
}
if block['q_type'] == 'Multiple Choice':
question['options'] = randomise_list(block['options'])
else:
question['options'] = block['options'].copy()
output.append(question)
if block['type'] == 'block':
for key, _question in enumerate(randomise_list(block['questions'])):
question = {
'type': 'block',
'q_no': _question['q_no'],
'question_header': block['question_header'] if 'question_header' in block else '',
'block_length': len(block['questions']),
'block_q_no': key,
'text': _question['text']
}
if _question['q_type'] == 'Multiple Choice':
question['options'] = randomise_list(_question['options'])
else:
question['options'] = _question['options'].copy()
output.append(question)
return output
def evaluate_answers(dataset: dict, answers: dict):
score = 0
max = 0
tags = {}
for block in dataset['questions']:
if block['type'] == 'question':
max += 1
q_no = block['q_no']
if str(q_no) in answers:
correct = block['correct']
correct_answer = block['options'][correct]
if answers[str(q_no)] == correct_answer:
score += 1
for tag in block['tags']:
if tag not in tags:
tags[tag] = {
'scored': 1,
'max': 1
}
else:
tags[tag]['scored'] += 1
tags[tag]['max'] += 1
else:
for tag in block['tags']:
if tag not in tags:
tags[tag] = {
'scored': 0,
'max': 1
}
else:
tags[tag]['max'] += 1
if block['type'] == 'block':
for question in block['questions']:
max += 1
q_no = question['q_no']
if str(q_no) in answers:
correct = question['correct']
correct_answer = question['options'][correct]
if answers[str(q_no)] == correct_answer:
score += 1
for tag in question['tags']:
if tag not in tags:
tags[tag] = {
'scored': 1,
'max': 1
}
else:
tags[tag]['scored'] += 1
tags[tag]['max'] += 1
else:
for tag in question['tags']:
if tag not in tags:
tags[tag] = {
'scored': 0,
'max': 1
}
else:
tags[tag]['max'] += 1
grade = 'merit' if score/max >= .85 else 'pass' if score/max >= .70 else 'fail'
return {
'grade': grade,
'tags': tags,
'score': score,
'max': max
}
def get_tags_list(dataset:dict):
output = []
blocks = dataset['questions']
for block in blocks:
if block['type'] == 'question':
output = list(set(output) | set(block['tags']))
if block['type'] == 'block':
for question in block['questions']:
output = list(set(output) | set(question['tags']))
return output
def get_time_options():
time_options = [
('none', 'None'),
('60', '1 hour'),
('90', '1 hour 30 minutes'),
('120', '2 hours')
]
return time_options
def get_datasets():
from main import app, db
files = glob(os.path.join(app.config["DATA_FILE_DIRECTORY"],'*.json'))
data = []
if files:
for file in files:
filename = file.rsplit('/')[-1]
with open(file) as _file:
load = loads(_file.read())
_author = load['meta']['author']
author = decrypt_find_one(db.users, {'_id': _author})['username']
data_element = {
'filename': filename,
'timestamp': datetime.strptime(load['meta']['timestamp'], '%Y-%m-%d %H%M%S'),
'author': author,
'use': len(load['meta']['tests'])
}
data.append(data_element)
return data
def get_correct_answers(dataset:dict):
output = {}
blocks = dataset['questions']
for block in blocks:
if block['type'] == 'question':
output[str(block['q_no'])] = block['options'][block['correct']]
if block['type'] == 'block':
for question in block['questions']:
output[str(question['q_no'])] = question['options'][question['correct']]
return output