diff --git a/src/library/album.rs b/src/library/album.rs
index a14b35c..2e55233 100644
--- a/src/library/album.rs
+++ b/src/library/album.rs
@@ -65,7 +65,7 @@ impl ToAPI for Album {
         json!({
             "id": &self._id,
             "title": &self.title,
-            "artist": self.artist_id.as_ref().map(|x| x.id()),
+            "artist": self.artist_id.as_ref().map(mongod::Reference::id),
             "cover_url": if self.get_cover().await.is_some() {
                 Some(format!("/album/{}/cover", self._id))
             } else {
diff --git a/src/library/metadata.rs b/src/library/metadata.rs
index 3061f9f..e5c4106 100644
--- a/src/library/metadata.rs
+++ b/src/library/metadata.rs
@@ -5,15 +5,15 @@ use serde::{Deserialize, Serialize};
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
 pub struct AudioMetadata(pub serde_json::Value);
 
-impl Into<mongodb::bson::Bson> for AudioMetadata {
-    fn into(self) -> mongodb::bson::Bson {
-        mongodb::bson::to_bson(&self.0).unwrap()
+impl From<AudioMetadata> for mongodb::bson::Bson {
+    fn from(val: AudioMetadata) -> Self {
+        mongodb::bson::to_bson(&val.0).unwrap()
     }
 }
 
 impl AudioMetadata {
     fn get_key(&self, key: &str) -> Option<&str> {
-        Some(self.0.as_object()?.get(key)?.as_str()?)
+        self.0.as_object()?.get(key)?.as_str()
     }
 
     pub fn title(&self) -> Option<&str> {
diff --git a/src/library/mod.rs b/src/library/mod.rs
index af14917..39e3e48 100644
--- a/src/library/mod.rs
+++ b/src/library/mod.rs
@@ -31,7 +31,7 @@ pub struct Libary {
 }
 
 impl Libary {
-    pub async fn new(root_dir: PathBuf) -> Self {
+    pub const fn new(root_dir: PathBuf) -> Self {
         Self { root_dir }
     }
 
@@ -53,9 +53,13 @@ impl Libary {
 
     pub async fn add_path_to_library(&self, path: &str) {
         // search for path already present
-        if let Some(_) = Track::find_one_partial(doc! { "path": path }, json!({})).await {
+        if Track::find_one_partial(doc! { "path": path }, json!({}))
+            .await
+            .is_some()
+        {
             return;
         }
+
         log::info!("Adding {path} to library");
 
         // add track to library
@@ -124,7 +128,7 @@ impl Libary {
             );
         }
 
-        Track::create(&entry.as_object().unwrap()).await;
+        Track::create(entry.as_object().unwrap()).await;
     }
 
     pub async fn get_artists(&self) -> Vec<Artist> {
@@ -164,8 +168,8 @@ impl Libary {
         log::info!("Rescanning library");
         for entry in WalkDir::new(self.root_dir.clone())
             .follow_links(true)
-            .into_iter() // todo : remove
-            .filter_map(|e| e.ok())
+            .into_iter()
+            .filter_map(std::result::Result::ok)
         {
             let path = entry.path();
             if path.is_file() && is_music_file(path) {
diff --git a/src/library/playlist.rs b/src/library/playlist.rs
index 1485def..0ff515b 100644
--- a/src/library/playlist.rs
+++ b/src/library/playlist.rs
@@ -42,7 +42,7 @@ impl Playlist {
     }
 }
 
-#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
 pub enum Visibility {
     Private,
     Public,
@@ -67,7 +67,7 @@ impl ToAPI for Playlist {
             "owner": self.owner.id(),
             "visibility": serde_json::to_value(&self.visibility).unwrap(),
             "title": self.title,
-            "tracks": self.tracks.iter().map(|x| x.id()).collect::<Vec<_>>()
+            "tracks": self.tracks.iter().map(mongod::Reference::id).collect::<Vec<_>>()
         })
     }
 }
diff --git a/src/library/track.rs b/src/library/track.rs
index 156bc0e..136264d 100644
--- a/src/library/track.rs
+++ b/src/library/track.rs
@@ -37,7 +37,7 @@ impl Track {
             meta: data.get("meta").map(|x| AudioMetadata(x.clone())),
         };
         t.insert().await.unwrap();
-        t.update(&serde_json::to_value(&data).unwrap())
+        t.update(&serde_json::to_value(data).unwrap())
             .await
             .unwrap();
     }
@@ -88,12 +88,12 @@ impl Track {
 
 impl ToAPI for Track {
     async fn api(&self) -> serde_json::Value {
-        let (cover, album_title) = if let Some(album_ref) = &self.album_id {
+        let (cover, album_title, album_id) = if let Some(album_ref) = &self.album_id {
             let album = album_ref.get::<Album>().await;
 
-            (album.get_cover().await.is_some(), album.title)
+            (album.get_cover().await.is_some(), album.title, album._id)
         } else {
-            (false, String::new())
+            (false, String::new(), String::new())
         };
 
         let artist_title = if let Some(artist_ref) = &self.artist_id {
@@ -108,12 +108,12 @@ impl ToAPI for Track {
         json!({
             "id": self._id,
             "title": self.title,
-            "track_number": self.meta.as_ref().map(|x| x.track_number()),
+            "track_number": self.meta.as_ref().map(super::metadata::AudioMetadata::track_number),
             "meta": serde_json::to_value(&self.meta).unwrap(),
             "album_id": self.album_id.as_ref().map(|x| x.id().to_string()),
             "album": album_title,
             "cover": if cover {
-                Some(format!("/album/{}/cover", self._id))
+                Some(format!("/album/{album_id}/cover"))
             } else {
                 None
             },
diff --git a/src/library/user.rs b/src/library/user.rs
index 22d0a9c..1797dd7 100644
--- a/src/library/user.rs
+++ b/src/library/user.rs
@@ -41,14 +41,14 @@ impl Validate for User {
 
 impl User {
     pub async fn create(username: &str, password: &str, role: UserRole) -> Option<Self> {
-        if User::find_one_partial(doc! { "username": username }, json!({}))
+        if Self::find_one_partial(doc! { "username": username }, json!({}))
             .await
             .is_some()
         {
             return None;
         }
 
-        let u = User {
+        let u = Self {
             _id: uuid::Uuid::new_v4().to_string(),
             username: username.to_string(),
             password: bcrypt::hash(password, bcrypt::DEFAULT_COST).unwrap(),
@@ -61,7 +61,7 @@ impl User {
     }
 
     pub async fn login(username: &str, password: &str) -> Option<(Session, UserRole)> {
-        let u = User::find_one(doc! { "username": username }).await?;
+        let u = Self::find_one(doc! { "username": username }).await?;
 
         if !u.verify_pw(password) {
             return None;
@@ -99,7 +99,7 @@ impl User {
         s
     }
 
-    pub fn is_admin(&self) -> bool {
+    pub const fn is_admin(&self) -> bool {
         matches!(self.role, UserRole::Admin)
     }
 
diff --git a/src/main.rs b/src/main.rs
index 3eeca8d..3e10471 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -27,7 +27,7 @@ async fn rocket() -> _ {
     .to_cors()
     .expect("error creating CORS options");
 
-    let lib = Libary::new("./media".into()).await;
+    let lib = Libary::new("./media".into());
 
     lib.rescan().await;
 
diff --git a/src/route/album.rs b/src/route/album.rs
index 8741d45..18f84bd 100644
--- a/src/route/album.rs
+++ b/src/route/album.rs
@@ -3,10 +3,9 @@ use std::cmp::Ordering;
 use super::api_error;
 use super::FallibleApiResponse;
 use super::ToAPI;
-use mongod::Referencable;
 use mongodb::bson::doc;
 use rocket::fs::NamedFile;
-use rocket::*;
+use rocket::{get, State};
 use serde_json::json;
 
 use crate::cache::RouteCache;
@@ -69,17 +68,9 @@ pub async fn album_route(
         .await
         .ok_or_else(|| api_error("No album with that ID found"))?;
 
-    let mut tracks = Album::get_tracks_of_album(&format!("album::{}", album._id))
-        .await
-        .into_iter()
-        .map(|x| {
-            json!({
-                "id": x.id(),
-                "title": x.title,
-                "tracknumber": x.meta.map(|x| x.track_number())
-            })
-        })
-        .collect::<Vec<_>>();
+    let tracks = Album::get_tracks_of_album(&format!("album::{}", album._id)).await;
+
+    let mut tracks = to_api(&tracks).await;
 
     tracks.sort_by(sort_by_tracknumber);
 
diff --git a/src/route/artist.rs b/src/route/artist.rs
index c64443c..30fff23 100644
--- a/src/route/artist.rs
+++ b/src/route/artist.rs
@@ -5,7 +5,7 @@ use super::ToAPI;
 use fs::NamedFile;
 use mongod::Model;
 use mongodb::bson::doc;
-use rocket::*;
+use rocket::{fs, get, State};
 
 use crate::cache::RouteCache;
 use crate::library::artist::Artist;
diff --git a/src/route/mod.rs b/src/route/mod.rs
index 4289343..2602d6c 100644
--- a/src/route/mod.rs
+++ b/src/route/mod.rs
@@ -38,11 +38,11 @@ pub async fn to_api(albums: &[impl ToAPI]) -> Vec<serde_json::Value> {
 }
 
 #[get("/")]
-pub async fn index_redir() -> Redirect {
+pub fn index_redir() -> Redirect {
     Redirect::to(uri!("/web"))
 }
 
 #[get("/manifest.json")]
-pub async fn manifest_redir() -> Redirect {
+pub fn manifest_redir() -> Redirect {
     Redirect::to(uri!("/web/manifest.json"))
 }
diff --git a/src/route/track.rs b/src/route/track.rs
index 0c36507..ede01af 100644
--- a/src/route/track.rs
+++ b/src/route/track.rs
@@ -3,7 +3,7 @@ use super::FallibleApiResponse;
 use super::ToAPI;
 use fs::NamedFile;
 use mongodb::bson::doc;
-use rocket::*;
+use rocket::{fs, get, State};
 
 use crate::library::Libary;
 
diff --git a/src/route/user.rs b/src/route/user.rs
index 3dccb40..cddbe07 100644
--- a/src/route/user.rs
+++ b/src/route/user.rs
@@ -71,7 +71,7 @@ pub struct PasswdData {
 pub async fn passwd_route(passwd: Json<PasswdData>, mut u: User) -> FallibleApiResponse {
     u.passwd(&passwd.old, &passwd.new)
         .await
-        .map_err(|_| api_error("Password change failed"))?;
+        .map_err(|()| api_error("Password change failed"))?;
 
     Ok(json!({
         "ok": 1