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use std::fmt::Debug;
use std::ops::{Deref, DerefMut};
use serde::de::DeserializeSeed;
use serde::Deserializer;
use serde::{Deserialize, Serialize};
use serde_json::Value;
use tracing::trace_span;
use twilight_model::gateway::event::{DispatchEvent, DispatchEventWithTypeDeserializer};
#[derive(Debug, Clone, PartialEq)]
pub struct DispatchEventTagged(pub DispatchEvent);
impl Deref for DispatchEventTagged {
type Target = DispatchEvent;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl DerefMut for DispatchEventTagged {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.0
}
}
#[derive(Serialize, Deserialize)]
struct DispatchEventTaggedSerialized {
#[serde(rename = "d")]
pub data: Value,
#[serde(rename = "t")]
pub kind: String,
}
// todo(MatthieuCoder): Remove the use of the Value
impl<'de> Deserialize<'de> for DispatchEventTagged {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
let _s = trace_span!("deserializing DispatchEventTagged");
let tagged = DispatchEventTaggedSerialized::deserialize(deserializer)?;
let deserializer_seed = DispatchEventWithTypeDeserializer::new(&tagged.kind);
let dispatch_event = deserializer_seed.deserialize(tagged.data).unwrap();
Ok(Self(dispatch_event))
}
}
impl Serialize for DispatchEventTagged {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: serde::Serializer,
{
let _s = trace_span!("serializing DispatchEventTagged");
let kind = self.0.kind().name().unwrap();
DispatchEventTaggedSerialized {
data: serde_json::to_value(&self.0).unwrap(),
kind: kind.to_string(),
}
.serialize(serializer)
}
}
/// Payload send to the nova cache queues
#[derive(Serialize, Deserialize, Debug, Clone)]
pub struct CachePayload {
#[serde(flatten)]
pub data: DispatchEventTagged,
}
#[cfg(test)]
mod tests {
use serde_json::json;
use twilight_model::gateway::event::DispatchEvent;
use super::DispatchEventTagged;
#[test]
fn serialize_event_tagged() {
let dispatch_event = DispatchEventTagged(DispatchEvent::GiftCodeUpdate);
let value = serde_json::to_value(&dispatch_event);
assert!(value.is_ok());
let value = value.unwrap();
let kind = value.get("t").and_then(serde_json::Value::as_str);
assert_eq!(kind, Some("GIFT_CODE_UPDATE"));
}
#[test]
fn deserialize_event_tagged() {
let json = json!({
"t": "GIFT_CODE_UPDATE",
"d": {}
});
let dispatch_event = serde_json::from_value::<DispatchEventTagged>(json);
assert!(dispatch_event.is_ok());
let dispatch_event_tagged = dispatch_event.unwrap();
assert_eq!(
DispatchEventTagged(DispatchEvent::GiftCodeUpdate),
dispatch_event_tagged
);
}
}
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