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use sqlx::{Transaction, sqlite::Sqlite};
use super::{History, repo::Provider as _, validate};
use crate::{
clock::DateTime,
error::failed::{Failed, ResultExt as _},
event::{Broadcaster, Event, Sequence, repo::Provider as _},
login::{self, Login, repo::Provider as _},
name::Name,
password::{Password, StoredHash},
};
#[must_use = "dropping a user creation attempt is likely a mistake"]
pub struct Create<'a> {
name: &'a Name,
password: &'a Password,
created_at: &'a DateTime,
}
impl<'a> Create<'a> {
pub fn begin(name: &'a Name, password: &'a Password, created_at: &'a DateTime) -> Self {
Self {
name,
password,
created_at,
}
}
pub fn validate(self) -> Result<Validated<'a>, Error> {
let Self {
name,
password,
created_at,
} = self;
if !validate::name(name) {
return Err(Error::InvalidName(name.clone()));
}
let password_hash = password.hash().fail("Failed to digest new password")?;
Ok(Validated {
name,
password: password_hash,
created_at,
})
}
}
#[must_use = "dropping a user creation attempt is likely a mistake"]
pub struct Validated<'a> {
name: &'a Name,
password: StoredHash,
created_at: &'a DateTime,
}
impl Validated<'_> {
pub async fn store(
self,
tx: &mut Transaction<'_, Sqlite>,
) -> Result<Stored<impl IntoIterator<Item = Event> + use<>>, sqlx::Error> {
let Self {
name,
password,
created_at,
} = self;
let login = Login {
id: login::Id::generate(),
name: name.clone(),
};
tx.logins().create(&login, &password).await?;
let created = tx.sequence().next(created_at).await?;
let user = History::begin(&login, created);
let events = user.events().filter(Sequence::start_from(created));
tx.users().record_events(events.clone()).await?;
Ok(Stored {
events: events.map(Event::from),
login,
})
}
}
#[must_use = "dropping a user creation attempt is likely a mistake"]
pub struct Stored<E> {
events: E,
login: Login,
}
impl<E> Stored<E>
where
E: IntoIterator<Item = Event>,
{
pub fn publish(self, events: &Broadcaster) {
let Self {
events: user_events,
login: _,
} = self;
events.broadcast_from(user_events);
}
pub fn login(&self) -> &Login {
&self.login
}
}
#[derive(Debug, thiserror::Error)]
pub enum Error {
#[error("invalid user name: {0}")]
InvalidName(Name),
#[error(transparent)]
Failed(#[from] Failed),
}
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