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use std::collections::{BTreeMap, HashSet};
use std::sync::{Arc, Mutex};
use config;
use tokio;
use reqwest;
use rss;
use atom_syndication;
use chrono::DateTime;
use regex::Regex;
use telegram_bot::*;
use tokio::stream::StreamExt;
use sqlx::postgres::PgPoolOptions;
use sqlx::Row;
//use sqlx::Done; // .rows_affected()
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true => UserId::new(channel_id),
false => UserId::new(row.try_get("owner")?),
};
let url: &str = row.try_get("url")?;
let mut this_fetch: Option<DateTime<chrono::FixedOffset>> = None;
let iv_hash: Option<&str> = row.try_get("iv_hash")?;
let mut posts: BTreeMap<DateTime<chrono::FixedOffset>, String> = BTreeMap::new();
let content = reqwest::get(url).await?.bytes().await?;
//let mut content_ = surf::get(url).await.map_err(|err| anyhow!(err))?;
//eprintln!("Data: {:#?}", &content_);
//let content = content_.body_bytes().await.map_err(|err| anyhow!(err))?;
/*
let feed = rss::Channel::from_url(url)
let feed = rss::Channel::read_from(&content[..])
.with_context(|| format!("Problem opening feed url:\n{}", &url))?;
for item in feed.items() {
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]),
}?;
let url = item.link().unwrap().to_string();
posts.insert(date.clone(), url.clone());
};
*/
match rss::Channel::read_from(&content[..]) {
Ok(feed) => {
for item in feed.items() {
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]),
}?;
let url = item.link().unwrap().to_string();
posts.insert(date.clone(), url.clone());
};
},
Err(err) => match err {
rss::Error::InvalidStartTag => {
let feed = atom_syndication::Feed::read_from(&content[..])
.with_context(|| format!("Problem opening feed url:\n{}", &url))?;
for item in feed.entries() {
let date = item.published().unwrap();
let url = item.links()[0].href();
posts.insert(date.clone(), url.to_string());
};
},
rss::Error::Eof => (),
_ => bail!("Unsupported or mangled content:\n{:#?}\n", err)
}
};
for (date, url) in posts.iter() {
let mut conn = self.pool.acquire().await
.with_context(|| format!("Check post fetch conn:\n{:?}", &self.pool))?;
let row = sqlx::query("select exists(select true from rsstg_post where url = $1 and source_id = $2) as exists;")
.bind(&url)
.bind(*id)
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