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@goofmint

goofmint/index.rs

Created Oct 5, 2018
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extern crate futures;
extern crate js_sys;
extern crate wasm_bindgen;
extern crate wasm_bindgen_futures;
extern crate web_sys;
#[macro_use]
extern crate serde_derive;
use futures::{future, Future};
use js_sys::Promise;
use wasm_bindgen::prelude::*;
use wasm_bindgen::JsCast;
use wasm_bindgen_futures::future_to_promise;
use wasm_bindgen_futures::JsFuture;
use web_sys::{Request, RequestInit, RequestMode, Response};
#[derive(Debug, Serialize, Deserialize)]
pub struct Branch {
pub name: String,
pub commit: Commit,
}
#[derive(Debug, Serialize, Deserialize)]
pub struct Commit {
pub sha: String,
pub commit: CommitDetails,
}
#[derive(Debug, Serialize, Deserialize)]
pub struct CommitDetails {
pub author: Signature,
pub committer: Signature,
}
#[derive(Debug, Serialize, Deserialize)]
pub struct Signature {
pub name: String,
pub email: String,
}
#[wasm_bindgen]
pub fn run() -> Promise {
let mut opts = RequestInit::new();
opts.method("GET");
opts.mode(RequestMode::Cors);
let request = Request::new_with_str_and_init(
"https://api.github.com/repos/rustwasm/wasm-bindgen/branches/master",
&opts,
).unwrap();
request
.headers()
.set("Accept", "application/vnd.github.v3+json")
.unwrap();
let window = web_sys::window().unwrap();
let request_promise = window.fetch_with_request(&request);
let future = JsFuture::from(request_promise)
.and_then(|resp_value| {
assert!(resp_value.is_instance_of::<Response>());
let resp: Response = resp_value.dyn_into().unwrap();
resp.json()
}).and_then(|json_value: Promise| {
JsFuture::from(json_value)
}).and_then(|json| {
let branch_info: Branch = json.into_serde().unwrap();
future::ok(JsValue::from_serde(&branch_info).unwrap())
});
future_to_promise(future)
}
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