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use crate::service::RouteService;
use yew::prelude::worker::*;
use std::collections::HashSet;
use serde::{Deserialize, Serialize};
use std::fmt::{Debug, Error as FmtError, Formatter};
use crate::route::{Route, RouteState};
use log::trace;
mod bridge;
pub use bridge::RouteAgentBridge;
mod dispatcher;
pub use dispatcher::RouteAgentDispatcher;
pub trait AgentState<'de>: RouteState + Serialize + Deserialize<'de> + Debug {}
impl<'de, T> AgentState<'de> for T where T: RouteState + Serialize + Deserialize<'de> + Debug {}
#[derive(Debug)]
pub enum Msg<T> {
BrowserNavigationRouteChanged((String, T)),
}
#[derive(Serialize, Deserialize, Debug)]
pub enum RouteRequest<T> {
ReplaceRoute(Route<T>),
ReplaceRouteNoBroadcast(Route<T>),
ChangeRoute(Route<T>),
ChangeRouteNoBroadcast(Route<T>),
GetCurrentRoute,
}
impl<T> Transferable for RouteRequest<T> where for<'de> T: Serialize + Deserialize<'de> {}
pub struct RouteAgent<T>
where
for<'de> T: AgentState<'de>,
{
link: AgentLink<RouteAgent<T>>,
route_service: RouteService<T>,
subscribers: HashSet<HandlerId>,
}
impl<T: for<'de> AgentState<'de>> Debug for RouteAgent<T> {
fn fmt(&self, f: &mut Formatter) -> Result<(), FmtError> {
f.debug_struct("RouteAgent")
.field("link", &"-")
.field("route_service", &self.route_service)
.field("subscribers", &self.subscribers.len())
.finish()
}
}
impl<T> Agent for RouteAgent<T>
where
for<'de> T: AgentState<'de>,
{
type Input = RouteRequest<T>;
type Message = Msg<T>;
type Output = Route<T>;
type Reach = Context;
fn create(link: AgentLink<RouteAgent<T>>) -> Self {
let callback = link.send_back(Msg::BrowserNavigationRouteChanged);
let mut route_service = RouteService::new();
route_service.register_callback(callback);
RouteAgent {
link,
route_service,
subscribers: HashSet::new(),
}
}
fn update(&mut self, msg: Self::Message) {
match msg {
Msg::BrowserNavigationRouteChanged((_route_string, state)) => {
trace!("Browser navigated");
let mut route = Route::current_route(&self.route_service);
route.state = Some(state);
for sub in &self.subscribers {
self.link.response(*sub, route.clone());
}
}
}
}
fn connected(&mut self, id: HandlerId) {
self.subscribers.insert(id);
}
fn handle(&mut self, msg: Self::Input, who: HandlerId) {
match msg {
RouteRequest::ReplaceRoute(route) => {
let route_string: String = route.to_string();
self.route_service
.replace_route(&route_string, route.state.unwrap_or_default());
let route = Route::current_route(&self.route_service);
for sub in &self.subscribers {
self.link.response(*sub, route.clone());
}
}
RouteRequest::ReplaceRouteNoBroadcast(route) => {
let route_string: String = route.to_string();
self.route_service
.replace_route(&route_string, route.state.unwrap_or_default());
}
RouteRequest::ChangeRoute(route) => {
let route_string: String = route.to_string();
self.route_service
.set_route(&route_string, route.state.unwrap_or_default());
let route = Route::current_route(&self.route_service);
for sub in &self.subscribers {
self.link.response(*sub, route.clone());
}
}
RouteRequest::ChangeRouteNoBroadcast(route) => {
let route_string: String = route.to_string();
self.route_service
.set_route(&route_string, route.state.unwrap_or_default());
}
RouteRequest::GetCurrentRoute => {
let route = Route::current_route(&self.route_service);
self.link.response(who, route.clone());
}
}
}
fn disconnected(&mut self, id: HandlerId) {
self.subscribers.remove(&id);
}
}