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use crate::{messages::Message, states::Stateful};
use serde::{Deserialize, Serialize};
use serde_json::Value;
use std::fmt::Display;
#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
pub struct State<T: Display> {
pub events: Vec<String>,
pub message: Message<T>,
pub metadata: Value,
pub timestamp: i64,
}
impl<T: Display> State<T> {
pub fn new(events: Vec<String>, message: Message<T>) -> Self {
let metadata = Value::default();
let timestamp = chrono::Utc::now().timestamp();
Self {
events,
message,
metadata,
timestamp,
}
}
}
impl<T: Clone + Default + Display + Serialize> Stateful for State<T> {
type Data = T;
fn message(&self) -> &Message<Self::Data> {
&self.message
}
fn timestamp(&self) -> i64 {
self.timestamp
}
}
impl<T: Default + std::fmt::Display> Default for State<T> {
fn default() -> Self {
Self::new(Default::default(), Default::default())
}
}
impl<T: Display> std::convert::From<T> for State<T> {
fn from(data: T) -> Self {
Self::new(Default::default(), Message::from(data))
}
}
impl<T: Display + Serialize> std::fmt::Display for State<T> {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
write!(
f,
"{}",
serde_json::to_string_pretty(&self).unwrap().to_lowercase()
)
}
}