atom feed integrated aswell (with a cost of two new deps)

2 files changed, 84 insertions, 3 deletions

diff --git a/src/blog/atom.rs b/src/blog/atom.rs
new file mode 100644
index 0000000..e6b931c
--- /dev/null
+++ b/src/blog/atom.rs
@@ -0,0 +1,75 @@
+use super::{
+    helper::{get_articles, ArticleMeta},
+    rocket_uri_macro_r_blog_article, rocket_uri_macro_r_blog_index, ARTICLE_ROOT,
+};
+use crate::{error::MyResult, uri};
+use rocket::get;
+use std::{path::PathBuf, str::FromStr};
+
+#[get("/blog/feed.atom")]
+pub async fn r_blog_atom() -> MyResult<String> {
+    let entries = get_articles(&PathBuf::from_str(ARTICLE_ROOT).unwrap())
+        .await?
+        .iter()
+        .map(
+            |ArticleMeta {
+                 title,
+                 date,
+                 canonical_name,
+                 ..
+             }| {
+                let title = horrible_escape_function(title);
+                let datetime = iso8601::DateTime {
+                    date: date.clone(),
+                    time: iso8601::Time::default(),
+                };
+                let href = uri!(r_blog_article(canonical_name));
+                format!(
+                    r#"
+    <entry>
+        <title>{title}</title>
+        <link href="{href}/{canonical_name}" />
+        <id>tag:metamuffin.org,{date},{title}</id>
+        <published>{datetime}</published>
+        <summary>N/A</summary>
+        <author>
+            <name>metamuffin</name>
+            <email>metamuffin@disroot.org</email>
+        </author>
+    </entry>"#
+                )
+            },
+        )
+        .collect::<Vec<_>>();
+
+    let feed_url = uri!(r_blog_atom());
+    let index_url = uri!(r_blog_index());
+    let now = chrono::Utc::now().to_rfc3339();
+
+    Ok(format!(
+        r#"<?xml version="1.0" encoding="utf-8"?>
+    <feed xmlns="http://www.w3.org/2005/Atom">
+	<title>metamuffin's blog</title>
+	<subtitle>where they post pointless stuff</subtitle>
+	<link href="{feed_url}" rel="self" />
+	<link href="{index_url}" />
+	<id>urn:uuid:3cf2b704-3d94-4f1f-b194-42798ab5b47c</id>
+	<updated>{now}</updated>
+    <author>
+        <name>metamuffin</name>
+        <email>metamuffin@disroot.org</email>
+    </author>
+    {}
+    </feed>
+    "#,
+        entries.join("\n")
+    ))
+}
+
+pub fn horrible_escape_function(text: &str) -> String {
+    text.replace("&", "&amp;")
+        .replace("<", "&lt;")
+        .replace(">", "&gt;")
+        .replace("'", "&#8217;")
+        .replace("\"", "&quot;")
+}
diff --git a/src/blog/mod.rs b/src/blog/mod.rs
index 3ac38eb..23f0721 100644
--- a/src/blog/mod.rs
+++ b/src/blog/mod.rs
@@ -1,3 +1,4 @@
+pub mod atom;
 pub mod helper;
 
 use self::helper::{article_metadata, get_articles};
@@ -5,10 +6,14 @@ use crate::error::MyResult;
 use crate::layout::{DynScaffold, Scaffold};
 use crate::uri;
 use anyhow::anyhow;
+pub use atom::r_blog_atom;
+use atom::rocket_uri_macro_r_blog_atom;
 use rocket::{get, response::Redirect};
 use std::{path::PathBuf, str::FromStr};
 use tokio::fs::read_to_string;
 
+pub const ARTICLE_ROOT: &'static str = "./blog/articles";
+
 #[get("/blog")]
 pub fn r_blog() -> Redirect {
     Redirect::to(rocket::uri!(r_blog_index()))
@@ -17,12 +22,13 @@ pub fn r_blog() -> Redirect {
 #[get("/blog/index")]
 pub async fn r_blog_index() -> MyResult<DynScaffold<'static>> {
     // TODO this is a major performance issue here. requires O(n) syscalls to complete
-    let articles = get_articles(&PathBuf::from_str("./blog/articles").unwrap()).await?;
+    let articles = get_articles(&PathBuf::from_str(ARTICLE_ROOT).unwrap()).await?;
     Ok(Scaffold {
         title: "blog index".to_string(),
         content: markup::new! {
             h2 { "The Weblog" }
-            i { "Articles in reverse-chronological order." }
+            p { i { "Articles in reverse-chronological order." } }
+            p { a[href=uri!(r_blog_atom())]{ "Atom feed" } }
             ul {
                 @for a in &articles {
                     li {
@@ -37,7 +43,7 @@ pub async fn r_blog_index() -> MyResult<DynScaffold<'static>> {
 
 #[get("/blog/<name>")]
 pub async fn r_blog_article(name: &str) -> MyResult<DynScaffold<'static>> {
-    let apath = PathBuf::from_str("./blog/articles")
+    let apath = PathBuf::from_str(ARTICLE_ROOT)
         .unwrap()
         .join(PathBuf::new().with_file_name(name).with_extension("md"));
     let a = article_metadata(apath.clone()).await?;