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|
use anyhow::{bail, Context, Error, Result};
use irc::client::prelude::*;
use regex::Regex;
extern crate kuchiki;
use kuchiki::{parse_html, traits::*};
use reqwest::{get, Url};
use tracing::trace;
pub const URL_REGEX: &str = r#"(https?://|www.)\S+"#;
#[tracing::instrument]
pub fn url_parser(msg: &str) -> Vec<String> {
let url_regex = Regex::new(URL_REGEX).unwrap();
url_regex
.find_iter(msg)
.map(|u| u.as_str().to_string().replace("www.", "https://"))
.collect::<Vec<String>>()
}
#[tracing::instrument]
pub async fn url_title(url: &str) -> Result<String, Error> {
let body = get(Url::parse(url).context("Failed to parse url")?)
.await
.context("Failed to make request")?
.text()
.await
.context("failed to get request response text")?;
let document = parse_html().one(body);
match document.select("title") {
Ok(title) => Ok(title
.into_iter()
.nth(0)
.context("title did not have text")?
.text_contents()),
Err(_) => bail!("could not find title"),
}
}
#[tracing::instrument(skip(bot))]
pub async fn url_preview(bot: &crate::Bot, msg: Message) -> Result<()> {
if let Command::PRIVMSG(target, text) = msg.command.clone() {
let mut futures: Vec<tokio::task::JoinHandle<_>> = Vec::new();
for url in url_parser(&text) {
futures.push(tokio::spawn(async move {
trace!("got url: {:?}", url);
match url_title(&url.as_str()).await {
Ok(title) => {
trace!("extracted title from url: {:?}, {:?}", title, url);
Ok(title)
}
Err(err) => bail!("Failed to get urls title: {:?}", err),
}
}))
}
let titles = futures::future::join_all(futures).await;
let titles: Vec<String> = titles
.into_iter()
.filter_map(|x| x.ok())
.filter_map(|x| x.ok())
.collect();
if !titles.is_empty() {
bot.send_privmsg(&target, &msg_builder(&titles))?;
}
}
Ok(())
}
#[tracing::instrument]
pub fn msg_builder(titles: &Vec<String>) -> String {
format!(
"Title{}: {}",
if titles.len() > 1 { "s" } else { "" },
titles.join(" --- ")
)
}
#[cfg(test)]
mod tests {
use super::msg_builder;
use super::url_parser;
use super::url_title;
use mockito;
#[test]
fn test_url_titel() {
assert!(tokio_test::block_on(url_title(&mockito::server_url())).is_err());
let _m = mockito::mock("GET", "/")
.with_body(
r#"
<html>
<head>
<title>This is test site</title>
</head>
<body>
<h1>some heading</h1>
</body>
</html>
"#,
)
.create();
mockito::start();
let title: String = tokio_test::block_on(url_title(&mockito::server_url())).unwrap();
assert_eq!(title.as_str(), "This is test site");
}
#[test]
fn test_url_parser() {
let url = url_parser("some message https://news.ycombinator.com/ here");
assert_eq!(url[0], "https://news.ycombinator.com/");
let url = url_parser("no url here!");
assert!(url.is_empty());
let url = url_parser(
&[
"https://new.ycombinator.com/ ",
"http://news.ycombinator.com/ ",
"www.google.com",
]
.concat(),
);
assert_eq!(url.len(), 3);
}
#[test]
fn test_msg_builder() {
let msg = msg_builder(&Vec::from(["hello".to_string(), "world".to_string()]));
assert_eq!("Titles: hello --- world", msg);
let msg = msg_builder(&Vec::from(["hello".to_string()]));
assert_eq!("Title: hello", msg);
}
#[test]
/**
Integration test ish. this tries to replicate url_preview, to make sure
everything works together.
*/
fn test_all() {
let _urls = [
mockito::mock("GET", "/1")
.with_body(
r#"
<html>
<head>
<title>test site 1</title>
</head>
</html>
"#,
)
.create(),
mockito::mock("GET", "/2")
.with_body(
r#"
<html>
<head>
<title>test site 2</title>
</head>
"#,
)
.create(),
];
let mut titles: Vec<String> = Vec::new();
let text = format!(
"some text {u}/1 other text {u}/2",
u = &mockito::server_url()
);
let urls = url_parser(&text);
assert_eq!(urls.len(), 2);
for url in &urls {
if let Ok(title) = tokio_test::block_on(url_title(&url.as_str())) {
titles.push(title);
}
}
assert_eq!(msg_builder(&titles), "Titles: test site 1 --- test site 2");
}
}
|
