extern crate rss;
extern crate htmlescape;
use super::*;
use crate::Settings;
use crate::db::{establish_connection, ListingType, SortType, Crud};
use crate::db::community_view::SiteView;
use crate::db::post_view::PostView;
use crate::db::user::User_;
use crate::db::community::Community;
use actix_web::{HttpResponse, web, Result};
use actix_web::body::Body;
use rss::{ChannelBuilder, Item, ItemBuilder};
use diesel::result::Error;
pub fn get_feed(info: web::Path<(char, String)>) -> HttpResponse {
return match get_feed_internal(info) {
Ok(body) => HttpResponse::Ok()
.content_type("application/rss+xml")
.body(body),
// TODO: handle the specific type of error (403, 500, etc)
Err(e) => HttpResponse::InternalServerError().finish(),
}
}
fn get_feed_internal(info: web::Path<(char, String)>) -> Result {
let conn = establish_connection();
let mut community_id: Option = None;
let mut creator_id: Option = None;
// TODO: add a feed for /type/all
match info.0 {
'c' => community_id = Some(Community::read_from_name(&conn,info.1.clone())?.id),
'u' => creator_id = Some(User_::find_by_email_or_username(&conn,&info.1)?.id),
_ => return Err(Error::NotFound),
}
let post = PostView::list(&conn,
ListingType::All,
&SortType::New,
community_id,
creator_id,
None,
None,
None,
true,
false,
false,
None,
None,)?;
let mut items: Vec- = Vec::new();
for p in post {
// TODO: this may cause a lot of db queries
let user = User_::read(&conn, p.creator_id)?;
let dt = DateTime::::from_utc(p.published, Utc);
let mut i = ItemBuilder::default();
i.title(htmlescape::encode_minimal(&p.name));
i.author(htmlescape::encode_minimal(&user.name));
i.pub_date(htmlescape::encode_minimal(&dt.to_rfc2822()));
if p.url.is_some() {
i.link(p.url.unwrap());
}
if p.body.is_some() {
i.content(p.body.unwrap());
}
// TODO: any other fields?
// https://rust-syndication.github.io/rss/rss/struct.ItemBuilder.html
items.push(i.build().unwrap());
}
let site_view = SiteView::read(&conn)?;
let mut channel_builder = ChannelBuilder::default();
channel_builder.title(htmlescape::encode_minimal(&site_view.name))
.link(format!("https://{}", Settings::get().hostname))
.items(items);
if site_view.description.is_some() {
channel_builder.description(htmlescape::encode_minimal(&site_view.description.unwrap()));
}
// TODO: any other fields?
// https://rust-syndication.github.io/rss/rss/struct.ChannelBuilder.html
let channel = channel_builder.build().unwrap();
channel.write_to(::std::io::sink()).unwrap();
return Ok(channel.to_string());
}