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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::{error, 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 fn url_preview(bot: &crate::Bot, msg: Message) -> Result<()> {
if let Command::PRIVMSG(target, text) = msg.command.clone() {
let mut titles: Vec<String> = Vec::new();
for url in url_parser(&text) {
trace!("got url: {:?}", url);
match futures::executor::block_on(url_title(&url.as_str())) {
Ok(title) => {
trace!("extracted title from url: {:?}, {:?}", title, url);
titles.push(title);
},
Err(err) => error!("Failed to get urls title: {:?}", err),
}
}
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;
#[test]
fn test_url_titel() {
let title: String =
tokio_test::block_on(url_title("https://news.ycombinator.com")).unwrap();
assert_eq!(title.as_str(), "Hacker News");
let title: String = tokio_test::block_on(url_title("https://google.com")).unwrap();
assert_eq!(title.as_str(), "Google");
let title: Option<String> = tokio_test::block_on(url_title("random_site"));
assert_eq!(title, None)
}
#[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]
fn test_all() {
let mut titles: Vec<String> = Vec::new();
let text = "https://news.ycombinator.com www.google.com https://youtube.com";
let urls = url_parser(&text);
assert_eq!(urls.len(), 3);
for url in &urls {
if let Some(title) = tokio_test::block_on(url_title(&url.as_str())) {
titles.push(title);
}
}
assert_eq!(
msg_builder(&titles),
"Titles: Hacker News --- Google --- YouTube"
);
}
}
|
