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use crate::{
command,
sql::Db,
};
use std::{
borrow::Cow,
collections::{
BTreeMap,
HashSet,
},
sync::Arc,
};
use async_std::{
use async_compat::Compat;
task,
sync::{
Arc,
Mutex
},
};
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// max_delay: u16,
pub tg: Client,
pub me: Bot,
pub db: Db,
sources: Arc<Mutex<HashSet<Arc<i32>>>>,
http_client: reqwest::Client,
}
pub struct Post {
uri: String,
title: String,
authors: String,
summary: String,
}
impl Core {
pub async fn new(settings: config::Config) -> Result<Core> {
let owner_chat = ChatPeerId::from(settings.get_int("owner").stack()?);
let api_key = settings.get_string("api_key").stack()?;
let tg = Client::new(&api_key).stack()?
.with_host(settings.get_string("api_gateway").stack()?);
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owner_chat,
db: Db::new(&settings.get_string("pg").stack()?)?,
sources: Arc::new(Mutex::new(HashSet::new())),
http_client,
// max_delay: 60,
};
let clone = core.clone();
task::spawn(async move {
smol::spawn(Compat::new(async move {
loop {
let delay = match &clone.autofetch().await {
Err(err) => {
if let Err(err) = clone.send(format!("š {err}"), None, None).await {
eprintln!("Autofetch error: {err:?}");
};
std::time::Duration::from_secs(60)
},
Ok(time) => *time,
};
task::sleep(delay).await;
Timer::after(delay).await;
}
});
})).detach();
Ok(core)
}
pub async fn send <S>(&self, msg: S, target: Option<ChatPeerId>, mode: Option<ParseMode>) -> Result<Message>
where S: Into<String> {
let msg = msg.into();
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let source = conn.get_source(*id, self.owner_chat).await.stack()?;
conn.set_scrape(*id).await.stack()?;
let destination = ChatPeerId::from(match real {
true => source.channel_id,
false => source.owner,
});
let mut this_fetch: Option<DateTime<chrono::FixedOffset>> = None;
let mut posts: BTreeMap<DateTime<chrono::FixedOffset>, String> = BTreeMap::new();
let mut posts: BTreeMap<DateTime<chrono::FixedOffset>, Post> = BTreeMap::new();
let mut builder = self.http_client.get(&source.url);
if let Some(last_scrape) = last_scrape {
builder = builder.header(LAST_MODIFIED, last_scrape.to_rfc2822());
};
let response = builder.send().await.stack()?;
{
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Ok(feed) => {
for item in feed.items() {
if let Some(link) = item.link() {
let date = match item.pub_date() {
Some(feed_date) => DateTime::parse_from_rfc2822(feed_date),
None => DateTime::parse_from_rfc3339(&item.dublin_core_ext().unwrap().dates()[0]),
}.stack()?;
let url = link;
posts.insert(date, url.to_string());
let uri = link.to_string();
let title = item.title().unwrap_or("").to_string();
let authors = item.author().unwrap_or("").to_string();
let summary = item.content().unwrap_or("").to_string();
posts.insert(date, Post{
uri,
title,
authors,
summary,
});
}
};
},
Err(err) => match err {
rss::Error::InvalidStartTag => {
match atom_syndication::Feed::read_from(&content[..]) {
Ok(feed) => {
for item in feed.entries() {
let date = item.published().unwrap();
let url = item.links()[0].href();
posts.insert(*date, url.to_string());
let uri = item.links()[0].href().to_string();
let title = item.title().to_string();
let authors = item.authors().iter().map(|x| format!("{} <{:?}>", x.name(), x.email())).collect::<Vec<String>>().join(", ");
let summary = if let Some(sum) = item.summary() { sum.value.clone() } else { String::new() };
posts.insert(*date, Post{
uri,
title,
authors,
summary,
});
};
},
Err(err) => {
bail!("Unsupported or mangled content:\n{:?}\n{err}\n{status:#?}\n", &source.url)
},
}
},
rss::Error::Eof => (),
_ => bail!("Unsupported or mangled content:\n{:?}\n{err}\n{status:#?}\n", &source.url)
}
};
for (date, url) in posts.iter() {
for (date, post) in posts.iter() {
let post_url: Cow<str> = match source.url_re {
Some(ref x) => sedregex::ReplaceCommand::new(x).stack()?.execute(url),
None => url.into(),
Some(ref x) => sedregex::ReplaceCommand::new(x).stack()?.execute(&post.uri),
None => post.uri.clone().into(),
};
if let Some(exists) = conn.exists(&post_url, *id).await.stack()? {
if ! exists {
if this_fetch.is_none() || *date > this_fetch.unwrap() {
this_fetch = Some(*date);
};
self.send( match &source.iv_hash {
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let mut conn = self.db.begin().await.stack()?;
match conn.get_one(owner, source_id).await {
Ok(Some(source)) => source.to_string(),
Ok(None) => "Source not found in database.stack()?".to_string(),
Err(err) => format!("Failed to fetch source data:\n{err}"),
}
};
task::spawn(async move {
smol::spawn(Compat::new(async move {
if let Err(err) = clone.check(source_id, true, Some(last_scrape)).await {
if let Err(err) = clone.send(&format!("{source}\n\nš {}", encode(&err.to_string())), None, Some(ParseMode::MarkdownV2)).await {
eprintln!("Check error: {err}");
// clone.disable(&source_id, owner).await.unwrap();
};
};
});
})).detach();
}
} else if next_fetch - now < delay {
delay = next_fetch - now;
}
}
};
delay.to_std().stack()
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