from ..data import data as data_dir

import json
from random import shuffle

def load(filename:str):
    with open(f'./{data_dir}/{filename}') as file:
        return json.load(file)

def save(data:dict, filename:str):
    with open(f'./{data_dir}/{filename}', 'w') as file:
        json.dump(data, file, indent=4)

def check_is_json(file):
    if not '.' in file.filename or not file.filename.rsplit('.',1)[-1] == 'json': return False
    return True

def validate_json(file):
    file.stream.seek(0)
    data = json.loads(file.read())
    if not type(data) is list: return False

def randomise_list(list:list):
    _list = list.copy()
    shuffle(_list)
    return(_list)

def get_tag_list(dataset:list):
    output = []
    for block in dataset:
        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