feat: periodic deletion of old archives

federate/publiccodeyml/src/lib.rs

@@ -228,6 +228,32 @@ impl Federate for PccFederate {
         a.append_dir_all(".", self.get_content_path(false).await?)
             .unwrap();
         a.finish().unwrap();
+
+        let mut times: Vec<usize> = Vec::with_capacity(10);
+        let mut dir = fs::read_dir(Path::new(&self.base_dir)).await?;
+        while let Some(d) = dir.next_entry().await? {
+            if d.path().is_dir() {
+                continue;
+            }
+            let file = d.file_name().into_string().unwrap();
+            if file.ends_with(".tar") {
+                if let Some(time) = file.split(".tar").next() {
+                    times.push(time.parse::<usize>().unwrap());
+                }
+            }
+        }
+
+        times.sort();
+
+        let mut times = times.iter().rev();
+        for _ in 0..5 {
+            times.next();
+        }
+        for t in times {
+            let file = Path::new(&self.base_dir).join(format!("{t}.tar"));
+            fs::remove_file(file).await?;
+        }
+
         Ok(path)
     }
 }