from os import path
import json

SAVE_FILE = path.join("data", "save.dat") 

def readSave(*fields):
    try:
        with open(SAVE_FILE, 'r') as f:
            out = {}
            obj = json.load(f)
            for field in fields:
                try:
                    out[field] = obj[field]
                except KeyError:
                    out[field] = None
            return out
    except FileNotFoundError:
        with open(SAVE_FILE, 'w') as f:
            json.dump({'acc_token': 0}, f, indent=4)
        return readSave(*fields)

def save(fieldsDic):
    try:
        obj = None
        with open(SAVE_FILE, 'r') as f:
            out = {}
            obj = json.load(f)
        obj.update(fieldsDic) 
        with open(SAVE_FILE, 'w') as f:
            json.dump(obj, f, indent=4)
        return True
    except FileNotFoundError:
        with open(SAVE_FILE, 'w') as f:
            json.dump(fieldsDic, f, indent=4)
        return True