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|
use super::{
Id,
event::{Created, Event},
};
use crate::name::Name;
// This also implements FromRequestParts (see `./extract.rs`). As a result, it
// can be used as an extractor for endpoints that want to require a user, or for
// endpoints that need to behave differently depending on whether the client is
// or is not logged in.
#[derive(Clone, Debug, Eq, PartialEq, serde::Serialize)]
pub struct User {
pub id: Id,
pub name: Name,
// The omission of the hashed password is deliberate, to minimize the
// chance that it ends up tangled up in debug output or in some other chunk
// of logic elsewhere.
}
impl User {
// Without this allow, clippy wants the `Option<Self>` return type to be `Self`. It's not a bad
// suggestion, but we need `Option` here, for two reasons:
//
// 1. This is used to collect streams using a fold, below, which requires a type
// consistent with the fold, and
// 2. It's also consistent with the other history state machine types.
#[allow(clippy::unnecessary_wraps)]
fn apply(state: Option<Self>, event: Event) -> Option<Self> {
match (state, event) {
(None, Event::Created(event)) => Some(event.into()),
(state, event) => panic!("invalid message event {event:#?} for state {state:#?}"),
}
}
}
impl FromIterator<Event> for Option<User> {
fn from_iter<I: IntoIterator<Item = Event>>(events: I) -> Self {
events.into_iter().fold(None, User::apply)
}
}
impl From<&Created> for User {
fn from(event: &Created) -> Self {
event.user.clone()
}
}
impl From<Created> for User {
fn from(event: Created) -> Self {
event.user
}
}
|
