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|
mod prelude;
mod ws;
use crate::prelude::*;
#[wasm_bindgen]
extern "C" {
#[wasm_bindgen(js_namespace = console)]
fn log(s: &str);
}
const LIST_URL: &str = "http://127.0.0.1:4145/list";
const WATCH_URL: &str = "ws://127.0.0.1:4145/watch";
#[allow(clippy::large_enum_variant)]
#[derive(Clone)]
enum Msg {
List(seed::fetch::ResponseDataResult<Vec<Session>>),
Refresh,
StartWatching(String),
Watch(ws::WebSocketEvent),
}
struct WatchConn {
id: String,
#[allow(dead_code)] // no idea why it thinks this is dead
ws: WebSocket,
}
#[derive(Clone, Debug, serde::Deserialize)]
struct Session {
id: String,
username: String,
}
#[derive(Default)]
struct Model {
sessions: Vec<Session>,
watch_conn: Option<WatchConn>,
}
impl Model {
fn list(&self) -> impl futures::Future<Item = Msg, Error = Msg> {
seed::Request::new(LIST_URL).fetch_json_data(Msg::List)
}
fn watch(&mut self, id: &str, orders: &mut impl Orders<Msg>) {
let ws = ws::connect(WATCH_URL, Msg::Watch, orders);
self.watch_conn = Some(WatchConn {
id: id.to_string(),
ws,
})
}
}
fn init(_: Url, orders: &mut impl Orders<Msg>) -> Init<Model> {
log("init");
let model = Model::default();
orders.perform_cmd(model.list());
Init::new(model)
}
fn update(msg: Msg, model: &mut Model, orders: &mut impl Orders<Msg>) {
log("update");
match msg {
Msg::List(sessions) => match sessions {
Ok(sessions) => {
log("got sessions");
model.sessions = sessions;
}
Err(e) => {
log(&format!("error getting sessions: {:?}", e));
}
},
Msg::Refresh => {
orders.perform_cmd(model.list());
}
Msg::StartWatching(id) => {
log(&format!("watching {}", id));
model.watch(&id, orders);
}
Msg::Watch(event) => match event {
ws::WebSocketEvent::Connected(_) => {
log("connected");
}
ws::WebSocketEvent::Disconnected(_) => {
log("disconnected");
model.watch_conn = None;
}
ws::WebSocketEvent::Message(msg) => {
log(&format!(
"message from id {}: {:?}",
model.watch_conn.as_ref().unwrap().id,
msg
));
}
ws::WebSocketEvent::Error(e) => {
log(&format!(
"error from id {}: {:?}",
model.watch_conn.as_ref().unwrap().id,
e
));
}
},
}
}
fn view(model: &Model) -> impl View<Msg> {
log("view");
let mut list = vec![];
for session in &model.sessions {
list.push(seed::li![seed::button![
simple_ev(Ev::Click, Msg::StartWatching(session.id.clone())),
format!("{}: {}", session.username, session.id),
]]);
}
vec![
seed::h1!["it's a seed app"],
seed::ul![list],
seed::button![simple_ev(Ev::Click, Msg::Refresh), "refresh"],
]
}
#[wasm_bindgen(start)]
pub fn start() {
log("start");
seed::App::build(init, update, view).build_and_start();
}
|
