/
mod.rs
166 lines (151 loc) · 4.81 KB
/
mod.rs
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//! Collections of my favorite news source.
use crate::utils::{fetch_text, str2req, LazyLock, OptionResult};
use crate::{care, include_src, log, ticker};
use anyhow::Result;
use axum::body::Bytes;
use axum::http::header::*;
use axum::response::Html;
use axum::routing::{MethodRouter, Router};
use std::fmt::Write as _;
use std::sync::Mutex;
use std::time::{Duration, SystemTime};
fn generate(mut i: &str, o: &mut String) -> Result<()> {
// let mut limit = 20;
while let Some(mut p) = i.split_once("<item>") {
// limit -= 1;
*o += "\n<details>\n";
// title
i = p.1.split_once("<![CDATA[").e()?.1;
p = i.split_once("]]>").e()?;
*o += "<summary>";
*o += p.0;
*o += "</summary>\n";
// content
i = p.1.split_once("<![CDATA[").e()?.1;
p = i.split_once("]]>").e()?;
*o += "<section>";
let break_marks = [
"br>", "p>", "p ", "/p>", "div>", "div ", "/div>", "li>", "li ", "/li>",
];
while let Some(v) = p.0.split_once('<') {
p.0 = v.1.split_once('>').e()?.1;
let c = v.0.trim();
if !c.is_empty() {
*o += c;
}
if !o.ends_with("<br>") {
for mark in break_marks {
if v.1.starts_with(mark) {
*o += "<br>";
break;
}
}
}
}
*o += "</section>\n";
// link
i = p.1.split_once("<link>").e()?.1;
p = i.split_once("</link>").e()?;
*o += "<a href=\"";
*o += p.0;
*o += "\">[ Original Link ]</a>\n";
*o += "</details>\n";
i = p.1;
// if limit == 0 {
// break;
// }
}
*o += "\n<br>\n";
Ok(())
}
type Res = ([(HeaderName, HeaderValue); 2], Html<Bytes>);
const PAGE: [&str; 2] = include_src!("page.html");
static CACHE: LazyLock<Mutex<Res>> = LazyLock::new(|| {
let body = format!("{}<h2>Magazine is generating ...</h2>{}", PAGE[0], PAGE[1]);
// with small data, Mutex seems faster than RwLock
Mutex::new((
[
(CACHE_CONTROL, HeaderValue::from_static("no-store")),
(REFRESH, HeaderValue::from_static("2")),
],
Html(Bytes::from(body)),
))
});
async fn refresh() -> Result<()> {
let expires = httpdate::fmt_http_date(SystemTime::now() + Duration::from_secs(3600));
async fn rss(p: &str) -> Result<String, ()> {
let prefixs = [
"https://rsshub.feeded.xyz",
"https://rsshub.rssforever.com",
"https://rsshub.moeyy.cn",
"https://rsshub.app",
];
for prefix in prefixs {
let req = str2req(prefix.to_string() + p);
// log!(info: "{prefix}");
let v = care!(fetch_text(req).await, continue);
return Ok(v);
}
log!(erro: "magazine fetch failed, p = {p}");
Err(())
}
// tokio::task::JoinSet
let r = tokio::join!(
rss("/bbc?limit=5"),
rss("/hackernews?limit=5"), // &mode=fulltext
rss("/zhihu/daily?limit=7"),
rss("/oschina/news/industry?limit=7"),
rss("/1point3acres/post/hot3?limit=7"),
rss("/rustcc/jobs?limit=4"),
);
let mut o = String::new();
o += PAGE[0];
write!(
&mut o,
"{}",
httpdate::HttpDate::from(SystemTime::now() + Duration::from_secs(3600 * 8))
)
.unwrap();
o += "+0800\n<br><br>";
r.0.map(|v| generate(&v, &mut o)).ok();
r.1.map(|v| generate(&v, &mut o)).ok();
r.2.map(|v| generate(&v, &mut o)).ok();
r.3.map(|v| generate(&v, &mut o)).ok();
r.4.map(|v| generate(&v, &mut o)).ok();
r.5.map(|v| generate(&v, &mut o)).ok();
o += PAGE[1];
// use std::io::Write as _;
// let mut enc = flate2::write::GzEncoder::new(Vec::new(), flate2::Compression::fast());
// enc.write_all(o.as_bytes()).unwrap();
// enc.finish().unwrap()
*CACHE.lock().unwrap() = (
[
(
EXPIRES,
HeaderValue::from_maybe_shared(Bytes::from(expires)).unwrap(),
),
(
HeaderName::from_static("server-timing"),
HeaderValue::from_static("missedCache"),
),
// (CONTENT_ENCODING, HeaderValue::from_static("gzip")),
],
Html(Bytes::from(o)), // `bytes::Bytes` is cheaper than `Vec<u8>` on clone
);
Ok(())
}
pub fn service() -> Router {
tokio::spawn(async {
care!(refresh().await).ok();
});
Router::new().route(
"/magazine",
MethodRouter::new().get(|| async {
CACHE.lock().unwrap().to_owned() // just clone some AtomicPtr inner
}),
)
}
pub async fn tick() {
ticker!(return, 8, "XX:04:00");
care!(refresh().await).ok();
}