def check_username_exists(check_username_exists_json):
check_username_exists_dict = json_decoder.decode(
check_username_exists_json)
print("\n", check_username_exists_dict, "\n")
# if new installation, create new user table
if not (user_table_exists()):
create_new_user_table()
# check user table is username exists
fileObject = open("USERTABLE", "rb")
table = pickle.load(fileObject)
print("\n", table, "\n")
if any(obj['username'] == check_username_exists_dict['username']
for obj in table):
print("exists")
return json_encoder.encode({
"message": "Success",
"comment": "Username exists"
})
return json_encoder.encode({
"message": "Success",
"comment": "Username available"
})
def check_username_and_password_matches():
try:
# if new installation, create a new user table
if not (user_table_exists()):
create_new_user_table()
# extract from POST request form data wrapped in json
username = request.json['username']
password = request.json['password']
# open user table and check if username and password match.
fileObject = open("USERTABLE", "rb")
table = pickle.load(fileObject)
if (any(username == obj['username'] and password == obj['password']
for obj in table)):
return json_encoder.encode({
"message": "Success",
"comment": "Username and password match"
})
return json_encoder.encode({
"message":
"Success",
"comment":
"Username and password does not match"
})
except:
return json_encoder.encode({
"message": "Failure",
"comment": "Other error"
})
def add_user():
try:
user = request.json
print(user)
# if new installation, create a new user table
if not (user_table_exists()):
create_new_user_table()
fileObject = open("USERTABLE", "rb")
table = pickle.load(fileObject)
fileObject.close()
# newly created user does not have any notebooks
obj = {
"username": user['username'],
"password": user['password'],
"created_notebooks": []
}
table.append(obj)
# save updated user table
fileObject = open("USERTABLE", "wb")
pickle.dump(table, fileObject)
fileObject.close()
return json_encoder.encode({"message": "success"})
except:
return json_encoder.encode({"message": "failure"})
def check_username_exists(check_username_exists_json):
try:
check_username_exists_dict = json_decoder.decode(
check_username_exists_json)
# if new installation, create new user table
if not (user_table_exists()):
create_new_user_table()
# check user table is username exists
fileObject = open("USERTABLE", "rb")
table = pickle.load(fileObject)
if any(obj['username'] == check_username_exists_dict['username']
for obj in table):
return json_encoder.encode({
"message": "Success",
"comment": "Username exists"
})
return json_encoder.encode({
"message": "Success",
"comment": "Username available"
})
except:
return json_encoder.encode({
"message": "Failure",
"comment": "Other error"
})