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//! Utils for ring-core
use chrono::Utc;
/// Get local utc timestamp (millisecond)
pub fn get_epoch_ms() -> u128 {
Utc::now().timestamp_millis() as u128
}
#[cfg(feature = "wasm")]
/// Toolset for wasm
pub mod js_value {
use serde::de::DeserializeOwned;
use serde::Serialize;
use serde::Serializer;
use wasm_bindgen::JsValue;
use crate::error::Error;
use crate::error::Result;
/// From serde to JsValue
pub fn serialize(obj: &impl Serialize) -> Result<JsValue> {
let serializer = serde_wasm_bindgen::Serializer::json_compatible();
serializer
.serialize_some(&obj)
.map_err(Error::SerdeWasmBindgenError)
}
/// From JsValue to serde
pub fn deserialize<T: DeserializeOwned>(obj: impl Into<JsValue>) -> Result<T> {
serde_wasm_bindgen::from_value(obj.into()).map_err(Error::SerdeWasmBindgenError)
}
/// From JsValue to serde_json::Value
pub fn json_value(obj: impl Into<JsValue>) -> Result<serde_json::Value> {
let s = js_sys::JSON::stringify(&obj.into())
.map_err(|_| Error::JsError("failed to stringify obj".to_string()))?;
serde_json::from_str(&String::from(s)).map_err(Error::Deserialize)
}
}
#[cfg(feature = "wasm")]
pub mod js_func {
/// This macro will generate a wrapper for mapping a js_sys::Function with type fn(T, T, T, T) -> Promise<()>
/// to native function
/// # Example:
/// For macro calling: of!(of2, a: T0, b: T1);
/// Will generate code:
/// ```rust
/// pub fn of2<'a, 'b: 'a, T0: TryInto<JsValue> + Clone, T1: TryInto<JsValue> + Clone>(
/// func: &Function,
/// ) -> Box<dyn Fn(T0, T1) -> Pin<Box<dyn Future<Output = Result<()>> + 'b>>>
/// where
/// T0: 'b,
/// T1: 'b,
/// T0::Error: Debug,
/// T1::Error: Debug,
/// {
/// let func = func.clone();
/// Box::new(
/// move |a: T0, b: T1| -> Pin<Box<dyn Future<Output = Result<()>>>> {
/// let func = func.clone();
/// Box::pin(async move {
/// let func = func.clone();
/// let params = js_sys::Array::new();
/// let a: JsValue = a
/// .clone()
/// .try_into()
/// .map_err(|_| Error::JsError(format!("{:?}", e)));
/// params.push(&a);
/// let b: JsValue = b
/// .clone()
/// .try_into()
/// .map_err(|_| Error::JsError(format!("{:?}", e)));
/// params.push(&b);
/// JsFuture::from(js_sys::Promise::from(
/// func.apply(&JsValue::NULL, ¶ms).map_err(|e| {
/// Error::JsError(js_sys::Error::from(e).to_string().into())
/// })?,
/// ))
/// .await
/// .map_err(|e| Error::JsError(js_sys::Error::from(e).to_string().into()))?;
/// Ok(())
/// })
/// },
/// )
/// }
/// ```
#[macro_export]
macro_rules! of {
($func: ident, $($name:ident: $type: ident),+$(,)?) => {
pub fn $func<'a, 'b: 'a, $($type: TryInto<wasm_bindgen::JsValue> + Clone),+>(
func: &js_sys::Function,
) -> Box<dyn Fn($($type),+) -> std::pin::Pin<Box<dyn std::future::Future<Output = $crate::error::Result<()>> + 'b>>>
where $($type::Error: std::fmt::Debug),+,
$($type: 'b),+
{
let func = func.clone();
Box::new(
move |$($name: $type,)+| -> std::pin::Pin<Box<dyn std::future::Future<Output = $crate::error::Result<()>>>> {
let func = func.clone();
Box::pin(async move {
let func = func.clone();
let params = js_sys::Array::new();
$(
let $name: wasm_bindgen::JsValue = $name.clone().try_into().map_err(|e| $crate::error::Error::JsError(format!("{:?}", e)))?;
params.push(&$name);
)+
wasm_bindgen_futures::JsFuture::from(js_sys::Promise::from(
func.apply(
&wasm_bindgen::JsValue::NULL,
¶ms
)
.map_err(|e| $crate::error::Error::from(js_sys::Error::from(e)))?,
))
.await
.map_err(|e| $crate::error::Error::from(js_sys::Error::from(e)))?;
Ok(())
})
},
)
}
}
}
of!(of1, a: T0);
of!(of2, a: T0, b: T1);
of!(of3, a: T0, b: T1, c: T2);
of!(of4, a: T0, b: T1, c: T2, d: T3);
}
#[cfg(feature = "wasm")]
pub mod js_utils {
use wasm_bindgen::closure::Closure;
use wasm_bindgen::JsCast;
use wasm_bindgen::JsValue;
pub enum Global {
Window(web_sys::Window),
WorkerGlobal(web_sys::WorkerGlobalScope),
ServiceWorkerGlobal(web_sys::ServiceWorkerGlobalScope),
}
pub fn global() -> Option<Global> {
let obj = JsValue::from(js_sys::global());
if obj.has_type::<web_sys::Window>() {
return Some(Global::Window(web_sys::Window::from(obj)));
}
if obj.has_type::<web_sys::WorkerGlobalScope>() {
return Some(Global::WorkerGlobal(web_sys::WorkerGlobalScope::from(obj)));
}
if obj.has_type::<web_sys::ServiceWorkerGlobalScope>() {
return Some(Global::ServiceWorkerGlobal(
web_sys::ServiceWorkerGlobalScope::from(obj),
));
}
None
}
pub fn window_sleep(millis: i32) -> wasm_bindgen_futures::JsFuture {
let promise = match global().unwrap() {
Global::Window(window) => js_sys::Promise::new(&mut |resolve, _| {
let func = Closure::once_into_js(move || {
resolve.call0(&JsValue::NULL).unwrap();
});
window
.set_timeout_with_callback_and_timeout_and_arguments_0(
func.as_ref().unchecked_ref(),
millis,
)
.unwrap();
}),
Global::WorkerGlobal(window) => js_sys::Promise::new(&mut |resolve, _| {
let func = Closure::once_into_js(move || {
resolve.call0(&JsValue::NULL).unwrap();
});
window
.set_timeout_with_callback_and_timeout_and_arguments_0(
func.as_ref().unchecked_ref(),
millis,
)
.unwrap();
}),
Global::ServiceWorkerGlobal(window) => js_sys::Promise::new(&mut |resolve, _| {
let func = Closure::once_into_js(move || {
resolve.call0(&JsValue::NULL).unwrap();
});
window
.set_timeout_with_callback_and_timeout_and_arguments_0(
func.as_ref().unchecked_ref(),
millis,
)
.unwrap();
}),
};
wasm_bindgen_futures::JsFuture::from(promise)
}
}