pass-gen/app/usecases/pass_gen.py

50 lines
1.3 KiB
Python

import random
import string
from typing import Protocol
from pydantic import BaseModel
from app.models.password import Password
from app.repositories.type import Repository
class PassGenOptions(BaseModel):
service: str
seed: int
length: int = 8
symbols: bool = False
numbers: bool = True
def generate_password(repo: Repository, options: PassGenOptions) -> str:
if repo.exists(options.service):
raise ValueError("password for this service has already been set")
characters = _build_characters(symbols=options.symbols, numbers=options.numbers)
random_generator = _new_random_generator(options.seed)
password = "".join(random_generator.sample(characters, options.length))
repo.save(options.service, password)
return password
class RandomSampler(Protocol):
def sample(self, population: str, k: int) -> list[str]:
... # pragma nocover
def _new_random_generator(seed: int) -> RandomSampler:
return random.Random(seed)
def _build_characters(symbols: bool, numbers: bool) -> str:
return "".join(
[
string.ascii_letters,
string.punctuation if symbols else "",
string.digits if numbers else "",
]
)
def list_all_saved_passwords(repo: Repository) -> list[Password]:
return repo.list_all()