adding guids to the rss feed

src/main.rs

@@ -1,4 +1,3 @@
-#![feature(lazy_cell)]
 mod writer;
 
 use axum::{
@@ -27,12 +26,12 @@ static SECRET_KEY: LazyLock<Key> = LazyLock::new(Key::generate);
 #[tokio::main]
 async fn main() {
     let args: Vec<String> = env::args().collect();
-    if args.len() < 3 {
+    if args.len() < 4 {
         println!("Need file argument.");
         exit(1);
     }
 
-    let store = Arc::new(Mutex::new(LinkFile::new(&args[1], &args[2])));
+    let store = Arc::new(Mutex::new(LinkFile::new(&args[1], &args[2], &args[3])));
 
     let authenticated = Router::new()
         .route("/rss.xml", get(get_rss))

src/writer.rs

@@ -5,7 +5,7 @@ use reqwest::Client;
 use std::fs;
 use std::fs::File;
 use std::io;
-use std::io::Write;
+use std::io::{Read, Write};
 use std::path::{Path, PathBuf};
 use std::time::Duration;
 use tokio::time::timeout;
@@ -14,6 +14,7 @@ const TEMPLATE_STRING: &str = "
 <item>
     <title> {{ title }} </title>
     <link> {{ link }} </link>
+    <guid isPermaLink=\"false\"> {{ link }}/{{ guid }} </guid>
 </item>
 
 ";
@@ -22,6 +23,7 @@ pub struct LinkFile {
     client: Client,
     path: PathBuf,
     copy_path: PathBuf,
+    guid_path: PathBuf,
 }
 
 async fn get_link_title(client: &Client, link: &str) -> Result<String> {
@@ -61,12 +63,17 @@ fn prepend_file(
 }
 
 impl LinkFile {
-    pub fn new(path: impl AsRef<Path> + Clone, tempfile: impl AsRef<Path> + Clone) -> Self {
+    pub fn new(
+        path: impl AsRef<Path> + Clone,
+        tempfile: impl AsRef<Path> + Clone,
+        guidfile: impl AsRef<Path> + Clone,
+    ) -> Self {
         let client = Client::new();
         Self {
             client,
             path: path.as_ref().to_path_buf(),
             copy_path: tempfile.as_ref().to_path_buf(),
+            guid_path: guidfile.as_ref().to_path_buf(),
         }
     }
 
@@ -76,6 +83,16 @@ impl LinkFile {
             Err(_) => escape(link).to_string(),
         };
 
+        let mut guid_file = File::open(&self.guid_path)?;
+
+        let mut guid_string = String::new();
+
+        guid_file.read_to_string(&mut guid_string)?;
+
+        let guid: usize = str::parse(str::trim(&guid_string))?;
+
+        fs::write(&self.guid_path, format!("{}", guid + 1))?;
+
         let mut env = Environment::new();
         env.add_template("rss_fragment", TEMPLATE_STRING)?;
         let template = env.get_template("rss_fragment")?;
@@ -85,6 +102,7 @@ impl LinkFile {
                 .render(context! {
                 title => title,
                 link => escape(link).to_string(),
+                guid => format!("{}", guid),
                 })?
                 .as_bytes(),
             self.path.clone(),
@@ -106,7 +124,7 @@ mod tests {
 
     #[test]
     fn test_linkfile() {
-        let mut linkfile = LinkFile::new("./store.xmlfrag", "./copy_store.xmlfrag");
+        let mut linkfile = LinkFile::new("./store.xmlfrag", "./copy_store.xmlfrag", "./guid");
         linkfile.add_link("https://evilmuff.in").unwrap();
     }
 }