c2303db1aa
- Display rss buttons on front end for user, /c/all, and community pages. Fixes #348. - Some clean up and additions to RSS feeds.
212 lines
5.5 KiB
Rust
212 lines
5.5 KiB
Rust
extern crate htmlescape;
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extern crate rss;
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use super::*;
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use crate::db::community::Community;
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use crate::db::community_view::SiteView;
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use crate::db::post_view::PostView;
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use crate::db::user::User_;
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use crate::db::{establish_connection, ListingType, SortType};
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use crate::Settings;
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use actix_web::body::Body;
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use actix_web::{web, HttpResponse, Result};
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use diesel::result::Error;
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use rss::{CategoryBuilder, ChannelBuilder, GuidBuilder, Item, ItemBuilder};
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use serde::Deserialize;
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use std::str::FromStr;
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use strum::ParseError;
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#[derive(Deserialize)]
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pub struct Params {
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sort: Option<String>,
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}
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enum RequestType {
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All,
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Community,
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User,
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}
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pub fn get_all_feed(info: web::Query<Params>) -> HttpResponse<Body> {
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let sort_type = match get_sort_type(info) {
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Ok(sort_type) => sort_type,
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Err(_) => return HttpResponse::BadRequest().finish(),
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};
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match get_feed_internal(&sort_type, RequestType::All, None) {
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Ok(rss) => HttpResponse::Ok()
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.content_type("application/rss+xml")
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.body(rss),
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Err(_) => HttpResponse::InternalServerError().finish(),
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}
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}
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pub fn get_feed(path: web::Path<(char, String)>, info: web::Query<Params>) -> HttpResponse<Body> {
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let sort_type = match get_sort_type(info) {
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Ok(sort_type) => sort_type,
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Err(_) => return HttpResponse::BadRequest().finish(),
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};
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let request_type = match path.0 {
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'u' => RequestType::User,
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'c' => RequestType::Community,
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_ => return HttpResponse::NotFound().finish(),
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};
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match get_feed_internal(&sort_type, request_type, Some(path.1.to_owned())) {
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Ok(rss) => HttpResponse::Ok()
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.content_type("application/rss+xml")
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.body(rss),
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Err(_) => HttpResponse::NotFound().finish(),
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}
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}
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fn get_sort_type(info: web::Query<Params>) -> Result<SortType, ParseError> {
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let sort_query = info.sort.to_owned().unwrap_or(SortType::Hot.to_string());
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SortType::from_str(&sort_query)
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}
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fn get_feed_internal(
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sort_type: &SortType,
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request_type: RequestType,
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name: Option<String>,
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) -> Result<String, Error> {
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let conn = establish_connection();
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let mut community_id: Option<i32> = None;
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let mut creator_id: Option<i32> = None;
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let site_view = SiteView::read(&conn)?;
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let mut channel_builder = ChannelBuilder::default();
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// TODO do channel image, need to externalize
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match request_type {
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RequestType::All => {
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channel_builder
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.title(htmlescape::encode_minimal(&site_view.name))
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.link(format!("https://{}", Settings::get().hostname));
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if let Some(site_desc) = site_view.description {
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channel_builder.description(htmlescape::encode_minimal(&site_desc));
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}
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}
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RequestType::Community => {
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let community = Community::read_from_name(&conn, name.unwrap())?;
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community_id = Some(community.id);
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let community_url = format!("https://{}/c/{}", Settings::get().hostname, community.name);
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channel_builder
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.title(htmlescape::encode_minimal(&format!(
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"{} - {}",
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site_view.name, community.name
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)))
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.link(community_url);
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if let Some(community_desc) = community.description {
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channel_builder.description(htmlescape::encode_minimal(&community_desc));
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}
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}
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RequestType::User => {
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let creator = User_::find_by_email_or_username(&conn, &name.unwrap())?;
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creator_id = Some(creator.id);
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let creator_url = format!("https://{}/u/{}", Settings::get().hostname, creator.name);
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channel_builder
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.title(htmlescape::encode_minimal(&format!(
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"{} - {}",
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site_view.name, creator.name
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)))
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.link(creator_url);
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}
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}
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let posts = PostView::list(
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&conn,
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ListingType::All,
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sort_type,
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community_id,
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creator_id,
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None,
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None,
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None,
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true,
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false,
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false,
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None,
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None,
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)?;
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let mut items: Vec<Item> = Vec::new();
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for p in posts {
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let mut i = ItemBuilder::default();
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i.title(htmlescape::encode_minimal(&p.name));
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let author_url = format!("https://{}/u/{}", Settings::get().hostname, p.creator_name);
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i.author(format!(
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"/u/{} <a href=\"{}\">(link)</a>",
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p.creator_name, author_url
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));
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let dt = DateTime::<Utc>::from_utc(p.published, Utc);
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i.pub_date(htmlescape::encode_minimal(&dt.to_rfc2822()));
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let post_url = format!("https://{}/post/{}", Settings::get().hostname, p.id);
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i.comments(post_url.to_owned());
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let guid = GuidBuilder::default()
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.permalink(true)
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.value(&post_url)
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.build();
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i.guid(guid.unwrap());
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let community_url = format!(
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"https://{}/c/{}",
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Settings::get().hostname,
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p.community_name
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);
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let category = CategoryBuilder::default()
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.name(format!(
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"/c/{} <a href=\"{}\">(link)</a>",
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p.community_name, community_url
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))
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.domain(Settings::get().hostname)
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.build();
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i.categories(vec![category.unwrap()]);
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if let Some(url) = p.url {
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i.link(url);
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}
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// TODO find a markdown to html parser here, do images, etc
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let mut description = format!("
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submitted by <a href=\"{}\">{}</a> to <a href=\"{}\">{}</a><br>{} points | <a href=\"{}\">{} comments</a>",
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author_url,
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p.creator_name,
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community_url,
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p.community_name,
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p.score,
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post_url,
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p.number_of_comments);
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if let Some(body) = p.body {
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description.push_str(&format!("<br><br>{}", body));
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}
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i.description(description);
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items.push(i.build().unwrap());
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}
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channel_builder.items(items);
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let channel = channel_builder.build().unwrap();
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channel.write_to(::std::io::sink()).unwrap();
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Ok(channel.to_string())
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}
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