Put real feed url into feed

Instead of hardcoding the feed file name to be feed.atom, it has been
configurable for a while. This is now also reflected in the feed itself.

Signed-off-by: Jacob Kiers <jacob@jacobkiers.net>

src/feed.rs

@@ -57,10 +57,11 @@ pub(crate) fn add_entry_to_feed(
     feed.entries.push(entry);
 }
 
-pub(crate) fn build_atom_feed(hostname: &String) -> Feed {
+pub(crate) fn build_atom_feed(hostname: &String, feed_file: &str) -> Feed {
+    let feed_url = format!("https://{}/{}", hostname, feed_file);
     FeedBuilder::default()
         .title("JJKiers Newsletters")
-        .id(format!("https://{}/feed.atom", hostname))
+        .id(&feed_url)
         .link(
             LinkBuilder::default()
                 .href(format!("https://{}/", hostname))
@@ -69,7 +70,7 @@ pub(crate) fn build_atom_feed(hostname: &String) -> Feed {
         )
         .link(
             LinkBuilder::default()
-                .href(format!("https://{}/feed.atom", hostname))
+                .href(&feed_url)
                 .rel("self".to_string())
                 .build(),
         )

src/main.rs

@@ -70,7 +70,11 @@ fn build_feed(filename: &PathBuf, hostname: String, include_html: bool) -> Resul
 
     create_directory(dir)?;
 
-    let mut feed = feed::build_atom_feed(&hostname);
+    let feed_file = filename
+        .file_name().expect("Feed path should have a file name")
+        .to_str().expect("Feed path should be printable.");
+
+    let mut feed = feed::build_atom_feed(&hostname, feed_file);
 
     let mut reader = DataDirectoryMessageReader::new((&Path::new("data")).to_path_buf());
 
@@ -117,7 +121,6 @@ fn build_feed(filename: &PathBuf, hostname: String, include_html: bool) -> Resul
         // Another ugly hack, but I don't know how to do this better...
         let file_name = format!("{:?}", filename.file_name().unwrap()).replace('"', "");
         write_file(dir.join("index.html"), INDEX_HTML.replace("{FEED}", file_name.as_str()))?;
-
     }
 
     println!("Finished building the feed.");