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|
use super::{
event::{Event, Kind, Sent},
Id,
};
use crate::{channel::Channel, event::Instant, login::Login};
#[derive(Clone, Debug, Eq, PartialEq, serde::Serialize)]
#[serde(into = "self::serialize::Message")]
pub struct Message {
#[serde(skip)]
pub sent: Instant,
pub channel: Channel,
pub sender: Login,
pub id: Id,
pub body: String,
}
mod serialize {
use crate::{channel::Channel, login::Login, message::Id};
#[derive(serde::Serialize)]
pub struct Message {
channel: Channel,
sender: Login,
#[allow(clippy::struct_field_names)]
// Deliberately redundant with the module path; this produces a specific serialization.
message: MessageData,
}
#[derive(serde::Serialize)]
pub struct MessageData {
id: Id,
body: String,
}
impl From<super::Message> for Message {
fn from(message: super::Message) -> Self {
Self {
channel: message.channel,
sender: message.sender,
message: MessageData {
id: message.id,
body: message.body,
},
}
}
}
}
impl Message {
fn apply(state: Option<Self>, event: Event) -> Option<Self> {
match (state, event.kind) {
(None, Kind::Sent(event)) => Some(event.into()),
(Some(message), Kind::Deleted(event)) if message.id == event.message => 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
}
}
|
