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|
use serde_with::with_prefix;
use super::{
Body, Id,
event::{Event, Sent},
};
use crate::{conversation, event::Instant, user};
#[derive(Clone, Debug, Eq, PartialEq, serde::Serialize)]
pub struct Message {
#[serde(flatten)]
pub sent: Instant,
pub conversation: conversation::Id,
pub sender: user::Id,
pub id: Id,
pub body: Body,
#[serde(
flatten,
with = "prefix_deleted",
skip_serializing_if = "Option::is_none"
)]
pub deleted: Option<Instant>,
}
with_prefix!(prefix_deleted "deleted_");
impl Message {
fn apply(state: Option<Self>, event: Event) -> Option<Self> {
match (state, event) {
(None, Event::Sent(event)) => Some(event.into()),
(Some(message), Event::Deleted(event)) if message.id == event.id => None,
(state, event) => panic!("invalid message event {event:#?} for state {state:#?}"),
}
}
}
impl FromIterator<Event> for Option<Message> {
fn from_iter<I: IntoIterator<Item = Event>>(events: I) -> Self {
events.into_iter().fold(None, Message::apply)
}
}
impl From<&Sent> for Message {
fn from(event: &Sent) -> Self {
event.message.clone()
}
}
impl From<Sent> for Message {
fn from(event: Sent) -> Self {
event.message
}
}
|
