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use std::{ops::*, sync::Arc};
use wasm_bindgen::{prelude::*, JsCast};use web_sys::{MessageEvent, WebSocket as WebSocketSys};
#[derive(Clone)]
pub struct WebSocket {    sys: WebSocketSys,}
impl WebSocket {    pub fn new(url: &str) -> Result<Self, String> {        // Open the web socket        let ws_sys = WebSocketSys::new(url).map_err(|err| format!("{:?}", err))?;
        Ok(Self { sys: ws_sys })    }}
impl WebSocket {    pub fn set_onopen(&mut self, mut callback: Box<dyn FnMut() + Send + Sync>) {        let callback = Closure::wrap(Box::new(move |_e: web_sys::ProgressEvent| {            callback.deref_mut()();        }) as Box<dyn FnMut(web_sys::ProgressEvent)>);        self.sys.set_onopen(Some(callback.as_ref().unchecked_ref()));        callback.forget();    }
    pub fn set_onclose(&mut self, callback: Box<dyn Fn() + Send + Sync>) {        let callback = Closure::wrap(Box::new(move |_e: web_sys::ProgressEvent| {            callback.deref()();        }) as Box<dyn FnMut(web_sys::ProgressEvent)>);        self.sys            .set_onclose(Some(callback.as_ref().unchecked_ref()));        callback.forget();    }
    pub fn set_onmessage(&mut self, callback: Box<dyn Fn(Vec<u8>) + Send + Sync>) {        let callback = Arc::new(callback);
        let fr = web_sys::FileReader::new().unwrap();        let fr_c = fr.clone();        let onloadend_cb = {            let callback = callback.clone();            Closure::wrap(Box::new(move |_e: web_sys::ProgressEvent| {                let array = js_sys::Uint8Array::new(&fr_c.result().unwrap());                let data = array.to_vec();                callback.deref()(data);            }) as Box<dyn FnMut(web_sys::ProgressEvent)>)        };        fr.set_onloadend(Some(onloadend_cb.as_ref().unchecked_ref()));        onloadend_cb.forget();
        // Attach the message process        let onmessage_callback = {            let callback = callback.clone();            Closure::wrap(Box::new(move |e: MessageEvent| {                if let Ok(abuf) = e.data().dyn_into::<js_sys::ArrayBuffer>() {                    let data = js_sys::Uint8Array::new(&abuf).to_vec();                    callback.deref()(data);                } else if let Ok(blob) = e.data().dyn_into::<web_sys::Blob>() {                    fr.read_as_array_buffer(&blob).expect("blob not readable");                } else if let Ok(txt) = e.data().dyn_into::<js_sys::JsString>() {                    tracing::debug!(%txt, "message event, received Text");                } else {                    tracing::debug!("websocket received unknown message type");                }            }) as Box<dyn FnMut(MessageEvent)>)        };        self.sys.set_binary_type(web_sys::BinaryType::Arraybuffer);        self.sys            .set_onmessage(Some(onmessage_callback.as_ref().unchecked_ref()));        onmessage_callback.forget();    }
    pub fn send(&mut self, data: Vec<u8>) -> Result<(), String> {        let data_len = data.len();        let array = js_sys::Uint8Array::new_with_length(data_len as u32);        array.copy_from(&data[..]);        self.sys            .send_with_array_buffer(&array.buffer())            .map_err(|err| format!("{:?}", err))    }}