feat: rss supported

Cargo.toml

@@ -23,4 +23,5 @@ rust-crypto = "^0.2"
 juniper = "0.10"
 juniper_codegen = "0.10"
 juniper_rocket = "0.1.3"
-rand = "0.6.0"
+rand = "0.6.0"
+rss = "1.6.1"

src/main.rs

@@ -39,7 +39,7 @@ use std::collections::HashMap;
 use crate::graphql::{Schema, Query, Mutation};
 
 fn main() {
-    use crate::routers::{admin, article, catacher, graphql};
+    use crate::routers::{admin, article, catacher, graphql, rss};
     dotenv().ok();
     let database_url = std::env::var("DATABASE_URL").expect("database_url must be set");
 
@@ -56,6 +56,8 @@ fn main() {
             article::get_article_by_url,
             article::static_content,
 
+            rss::rss,
+
             graphql::graphql_authorization,
             graphql::graphiql,
             graphql::get_graphql_handler,

src/routers/mod.rs

@@ -1,7 +1,5 @@
 pub mod article;
 pub mod admin;
 pub mod rss;
-
 pub mod catacher;
-
 pub mod graphql;

src/routers/rss.rs

@@ -0,0 +1,42 @@
+use rss::ChannelBuilder;
+use rss::Channel;
+use rss::{Item, ItemBuilder};
+use rocket::response::content;
+use crate::guard::SettingMap;
+use crate::pg_pool::DbConn;
+use crate::models::Article;
+use crate::response::ArticleResponse;
+use std::collections::HashMap;
+
+#[get("/rss")]
+pub fn rss(setting: SettingMap, conn: DbConn) -> content::Xml<String> {
+    let result = Article::load_all(false, &conn);
+    let article_responses: Vec<ArticleResponse> = result.iter().map(ArticleResponse::from).collect();
+
+    let items: Vec<Item> = article_responses.into_iter().map(|item| {
+        ItemBuilder::default()
+            .title(item.article.title.clone())
+            .link(item.article.url.clone())
+            .description(item.description)
+            .content(item.markdown_content)
+            .pub_date(item.article.publish_at.to_string())
+            .build()
+            .unwrap()
+    }).collect();
+
+    let mut namespaces: HashMap<String, String> = HashMap::new();
+    namespaces.insert("dc".to_string(), "http://purl.org/dc/elements/1.1/".to_string());
+    namespaces.insert("content".to_string(), "http://purl.org/rss/1.0/modules/content/".to_string());
+    namespaces.insert("atom".to_string(), "http://www.w3.org/2005/Atom".to_string());
+    namespaces.insert("media".to_string(), "http://search.yahoo.com/mrss/".to_string());
+
+    let channel: Channel = ChannelBuilder::default()
+        .title(setting.title)
+        .description(setting.description)
+        .generator("Rubble".to_string())
+        .items(items)
+        .namespaces(namespaces)
+        .build()
+        .unwrap();
+    content::Xml(channel.to_string())
+}