Code cleanup (#148)

Fixed all most all clippy warnings.
Test: cargo test && cargo clippy

src/app/ddns/manager.rs

@@ -3,7 +3,6 @@ use diesel::prelude::*;
 use log::{error, info};
 use std::thread;
 use std::time;
-use ureq;
 
 use super::*;
 use crate::db::DB;

src/app/index/metadata.rs

@@ -1,12 +1,6 @@
 use anyhow::*;
-use ape;
-use id3;
 use lewton::inside_ogg::OggStreamReader;
 use log::error;
-use metaflac;
-use mp3_duration;
-use mp4ameta;
-use opus_headers;
 use regex::Regex;
 use std::fs;
 use std::path::Path;
@@ -52,13 +46,13 @@ impl From<id3::Tag> for SongTags {
 		let label = tag.get_text("TPUB");
 
 		SongTags {
+			disc_number,
+			track_number,
+			title,
+			duration,
 			artist,
 			album_artist,
 			album,
-			title,
-			duration,
-			disc_number,
-			track_number,
 			year,
 			has_artwork,
 			lyricist,
@@ -296,7 +290,7 @@ fn read_flac(path: &Path) -> Result<SongTags> {
 	let tag = metaflac::Tag::read_from_path(path)?;
 	let vorbis = tag
 		.vorbis_comments()
-		.ok_or(anyhow!("Missing Vorbis comments"))?;
+		.ok_or_else(|| anyhow!("Missing Vorbis comments"))?;
 	let disc_number = vorbis
 		.get("DISCNUMBER")
 		.and_then(|d| d[0].parse::<u32>().ok());

src/app/index/mod.rs

@@ -1,4 +1,3 @@
-use diesel;
 use log::error;
 use std::sync::{Arc, Condvar, Mutex};
 use std::time::Duration;
@@ -31,7 +30,12 @@ impl Index {
 			db,
 			vfs_manager,
 			settings_manager,
-			pending_reindex: Arc::new((Mutex::new(false), Condvar::new())),
+
+			pending_reindex: Arc::new((
+				#[allow(clippy::clippy::mutex_atomic)]
+				Mutex::new(false),
+				Condvar::new(),
+			)),
 		};
 
 		let commands_index = index.clone();

src/app/index/query.rs

@@ -1,5 +1,4 @@
 use anyhow::*;
-use diesel;
 use diesel::dsl::sql;
 use diesel::prelude::*;
 use diesel::sql_types;
@@ -89,7 +88,7 @@ impl Index {
 				.virtual_to_real(virtual_path)
 				.map_err(|_| QueryError::VFSPathNotFound)?;
 			let song_path_filter = {
-				let mut path_buf = real_path.clone();
+				let mut path_buf = real_path;
 				path_buf.push("%");
 				path_buf.as_path().to_string_lossy().into_owned()
 			};

src/app/index/update/cleaner.rs

@@ -1,5 +1,4 @@
 use anyhow::*;
-use diesel;
 use diesel::prelude::*;
 use rayon::prelude::*;
 use std::path::Path;

src/app/index/update/collector.rs

@@ -24,11 +24,8 @@ impl Collector {
 	}
 
 	pub fn collect(&self) {
-		loop {
-			match self.receiver.recv() {
-				Ok(directory) => self.collect_directory(directory),
-				Err(_) => break,
-			}
+		while let Ok(directory) = self.receiver.recv() {
+			self.collect_directory(directory);
 		}
 	}
 

src/app/index/update/inserter.rs

@@ -1,6 +1,5 @@
 use anyhow::*;
 use crossbeam_channel::Receiver;
-use diesel;
 use diesel::prelude::*;
 use log::error;
 
@@ -57,19 +56,16 @@ impl Inserter {
 		let new_directories = Vec::with_capacity(INDEX_BUILDING_INSERT_BUFFER_SIZE);
 		let new_songs = Vec::with_capacity(INDEX_BUILDING_INSERT_BUFFER_SIZE);
 		Self {
-			db,
 			receiver,
 			new_directories,
 			new_songs,
+			db,
 		}
 	}
 
 	pub fn insert(&mut self) {
-		loop {
-			match self.receiver.recv() {
-				Ok(item) => self.insert_item(item),
-				Err(_) => break,
-			}
+		while let Ok(item) = self.receiver.recv() {
+			self.insert_item(item);
 		}
 	}
 
@@ -91,34 +87,26 @@ impl Inserter {
 	}
 
 	fn flush_directories(&mut self) {
-		if self
-			.db
-			.connect()
-			.and_then(|connection| {
-				diesel::insert_into(directories::table)
-					.values(&self.new_directories)
-					.execute(&*connection) // TODO https://github.com/diesel-rs/diesel/issues/1822
-					.map_err(Error::new)
-			})
-			.is_err()
-		{
+		let res = self.db.connect().and_then(|connection| {
+			diesel::insert_into(directories::table)
+				.values(&self.new_directories)
+				.execute(&*connection) // TODO https://github.com/diesel-rs/diesel/issues/1822
+				.map_err(Error::new)
+		});
+		if res.is_err() {
 			error!("Could not insert new directories in database");
 		}
 		self.new_directories.clear();
 	}
 
 	fn flush_songs(&mut self) {
-		if self
-			.db
-			.connect()
-			.and_then(|connection| {
-				diesel::insert_into(songs::table)
-					.values(&self.new_songs)
-					.execute(&*connection) // TODO https://github.com/diesel-rs/diesel/issues/1822
-					.map_err(Error::new)
-			})
-			.is_err()
-		{
+		let res = self.db.connect().and_then(|connection| {
+			diesel::insert_into(songs::table)
+				.values(&self.new_songs)
+				.execute(&*connection) // TODO https://github.com/diesel-rs/diesel/issues/1822
+				.map_err(Error::new)
+		});
+		if res.is_err() {
 			error!("Could not insert new songs in database");
 		}
 		self.new_songs.clear();
@@ -127,10 +115,10 @@ impl Inserter {
 
 impl Drop for Inserter {
 	fn drop(&mut self) {
-		if self.new_directories.len() > 0 {
+		if !self.new_directories.is_empty() {
 			self.flush_directories();
 		}
-		if self.new_songs.len() > 0 {
+		if !self.new_songs.is_empty() {
 			self.flush_songs();
 		}
 	}

src/app/index/update/traverser.rs

@@ -49,7 +49,7 @@ impl Traverser {
 		let num_threads = std::env::var_os(key)
 			.map(|v| v.to_string_lossy().to_string())
 			.and_then(|v| usize::from_str(&v).ok())
-			.unwrap_or(min(num_cpus::get(), 4));
+			.unwrap_or_else(|| min(num_cpus::get(), 4));
 		info!("Browsing collection using {} threads", num_threads);
 
 		let mut threads = Vec::new();
@@ -107,14 +107,12 @@ impl Worker {
 			if self.is_all_work_done() {
 				return None;
 			}
+			if let Ok(w) = self
+				.work_item_receiver
+				.recv_timeout(Duration::from_millis(100))
 			{
-				if let Ok(w) = self
-					.work_item_receiver
-					.recv_timeout(Duration::from_millis(100))
-				{
-					return Some(w);
-				}
-			};
+				return Some(w);
+			}
 		}
 	}
 
@@ -167,12 +165,10 @@ impl Worker {
 
 			if path.is_dir() {
 				sub_directories.push(path);
+			} else if let Some(metadata) = metadata::read(&path) {
+				songs.push(Song { path, metadata });
 			} else {
-				if let Some(metadata) = metadata::read(&path) {
-					songs.push(Song { path, metadata });
-				} else {
-					other_files.push(path);
-				}
+				other_files.push(path);
 			}
 		}
 
@@ -180,7 +176,7 @@ impl Worker {
 
 		self.emit_directory(Directory {
 			path: work_item.path.to_owned(),
-			parent: work_item.parent.map(|p| p.to_owned()),
+			parent: work_item.parent,
 			songs,
 			other_files,
 			created,
@@ -195,7 +191,7 @@ impl Worker {
 	}
 
 	fn get_date_created(path: &Path) -> Option<i32> {
-		if let Ok(t) = fs::metadata(path).and_then(|m| m.created().or(m.modified())) {
+		if let Ok(t) = fs::metadata(path).and_then(|m| m.created().or_else(|_| m.modified())) {
 			t.duration_since(std::time::UNIX_EPOCH)
 				.map(|d| d.as_secs() as i32)
 				.ok()

src/app/lastfm/manager.rs

@@ -61,7 +61,7 @@ impl Manager {
 	}
 
 	pub fn link(&self, username: &str, lastfm_token: &str) -> Result<()> {
-		let mut scrobbler = Scrobbler::new(LASTFM_API_KEY.into(), LASTFM_API_SECRET.into());
+		let mut scrobbler = Scrobbler::new(LASTFM_API_KEY, LASTFM_API_SECRET);
 		let auth_response = scrobbler.authenticate_with_token(lastfm_token)?;
 
 		self.user_manager
@@ -74,7 +74,7 @@ impl Manager {
 	}
 
 	pub fn scrobble(&self, username: &str, track: &Path) -> Result<()> {
-		let mut scrobbler = Scrobbler::new(LASTFM_API_KEY.into(), LASTFM_API_SECRET.into());
+		let mut scrobbler = Scrobbler::new(LASTFM_API_KEY, LASTFM_API_SECRET);
 		let scrobble = self.scrobble_from_path(track)?;
 		let auth_token = self.user_manager.get_lastfm_session_key(username)?;
 		scrobbler.authenticate_with_session_key(&auth_token);
@@ -83,7 +83,7 @@ impl Manager {
 	}
 
 	pub fn now_playing(&self, username: &str, track: &Path) -> Result<()> {
-		let mut scrobbler = Scrobbler::new(LASTFM_API_KEY.into(), LASTFM_API_SECRET.into());
+		let mut scrobbler = Scrobbler::new(LASTFM_API_KEY, LASTFM_API_SECRET);
 		let scrobble = self.scrobble_from_path(track)?;
 		let auth_token = self.user_manager.get_lastfm_session_key(username)?;
 		scrobbler.authenticate_with_session_key(&auth_token);

src/app/playlist/manager.rs

@@ -1,6 +1,5 @@
 use anyhow::Result;
 use core::clone::Clone;
-use diesel;
 use diesel::prelude::*;
 use diesel::sql_types;
 use diesel::BelongingToDsl;
@@ -171,7 +170,7 @@ impl Manager {
 			ORDER BY ps.ordering
 		"#,
 			);
-			let query = query.clone().bind::<sql_types::Integer, _>(playlist.id);
+			let query = query.bind::<sql_types::Integer, _>(playlist.id);
 			songs = query.get_results(&connection).map_err(anyhow::Error::new)?;
 		}
 

src/app/settings/manager.rs

@@ -1,4 +1,3 @@
-use diesel;
 use diesel::prelude::*;
 use regex::Regex;
 use std::convert::TryInto;

src/app/thumbnail/generate.rs

@@ -23,7 +23,7 @@ pub fn generate_thumbnail(image_path: &Path, options: &Options) -> Result<Dynami
 	} else if options.pad_to_square {
 		let scaled_image = source_image.thumbnail(out_dimension, out_dimension);
 		let (scaled_width, scaled_height) = scaled_image.dimensions();
-		let background = image::Rgb([255, 255 as u8, 255 as u8]);
+		let background = image::Rgb([255, 255_u8, 255_u8]);
 		final_image = DynamicImage::ImageRgb8(ImageBuffer::from_pixel(
 			out_dimension,
 			out_dimension,

src/app/user/manager.rs

@@ -1,5 +1,4 @@
 use anyhow::anyhow;
-use diesel;
 use diesel::prelude::*;
 use std::time::{SystemTime, UNIX_EPOCH};
 
@@ -168,7 +167,7 @@ impl Manager {
 			.filter(name.eq(username))
 			.get_results(&connection)
 			.map_err(|_| Error::Unspecified)?;
-		Ok(results.len() > 0)
+		Ok(!results.is_empty())
 	}
 
 	pub fn is_admin(&self, username: &str) -> Result<bool, Error> {

src/app/user/preferences.rs

@@ -1,5 +1,4 @@
 use anyhow::Result;
-use diesel;
 use diesel::prelude::*;
 use serde::{Deserialize, Serialize};
 

src/app/vfs/manager.rs

@@ -30,7 +30,7 @@ impl Manager {
 		Ok(mount_dirs)
 	}
 
-	pub fn set_mount_dirs(&self, mount_dirs: &Vec<MountDir>) -> Result<()> {
+	pub fn set_mount_dirs(&self, mount_dirs: &[MountDir]) -> Result<()> {
 		use self::mount_points::dsl::*;
 		let connection = self.db.connect()?;
 		diesel::delete(mount_points).execute(&connection)?;

src/app/vfs/mod.rs

@@ -34,11 +34,12 @@ impl From<MountDir> for Mount {
 		let source = PathBuf::from(path_string.deref());
 		Self {
 			name: m.name,
-			source: source,
+			source,
 		}
 	}
 }
 
+#[allow(clippy::upper_case_acronyms)]
 pub struct VFS {
 	mounts: Vec<Mount>,
 }

src/db/mod.rs

@@ -2,7 +2,6 @@ use anyhow::*;
 use diesel::r2d2::{self, ConnectionManager, PooledConnection};
 use diesel::sqlite::SqliteConnection;
 use diesel::RunQueryDsl;
-use diesel_migrations;
 use std::path::Path;
 
 mod schema;
@@ -34,7 +33,7 @@ impl diesel::r2d2::CustomizeConnection<SqliteConnection, diesel::r2d2::Error>
 		);
 		query
 			.execute(connection)
-			.map_err(|e| diesel::r2d2::Error::QueryError(e))?;
+			.map_err(diesel::r2d2::Error::QueryError)?;
 		Ok(())
 	}
 }
@@ -46,7 +45,7 @@ impl DB {
 		let pool = diesel::r2d2::Pool::builder()
 			.connection_customizer(Box::new(ConnectionCustomizer {}))
 			.build(manager)?;
-		let db = DB { pool: pool };
+		let db = DB { pool };
 		db.migrate_up()?;
 		Ok(db)
 	}

src/main.rs

@@ -62,7 +62,7 @@ fn init_logging<T: AsRef<Path>>(log_level: LevelFilter, log_file_path: &Option<T
 		}
 		loggers.push(WriteLogger::new(
 			log_level,
-			log_config.clone(),
+			log_config,
 			fs::File::create(path)?,
 		));
 	}

src/paths.rs

@@ -106,6 +106,6 @@ impl Paths {
 			paths.log_file_path = None;
 		};
 
-		return paths;
+		paths
 	}
 }

src/service/actix/api.rs

@@ -23,7 +23,8 @@ use std::str;
 use crate::app::{
 	config, ddns,
 	index::{self, Index},
-	lastfm, playlist, settings, thumbnail, user, vfs,
+	lastfm, playlist, settings, thumbnail, user,
+	vfs::{self, MountDir},
 };
 use crate::service::{dto, error::*};
 
@@ -206,7 +207,7 @@ impl FromRequest for Auth {
 				})
 				.await?;
 				return Ok(Auth {
-					username: authorization.username.to_owned(),
+					username: authorization.username,
 					source: AuthSource::QueryParameter,
 				});
 			}
@@ -219,7 +220,7 @@ impl FromRequest for Auth {
 				})
 				.await?;
 				return Ok(Auth {
-					username: authorization.username.to_owned(),
+					username: authorization.username,
 					source: AuthSource::AuthorizationBearer,
 				});
 			}
@@ -458,7 +459,7 @@ async fn put_mount_dirs(
 	vfs_manager: Data<vfs::Manager>,
 	new_mount_dirs: Json<Vec<dto::MountDir>>,
 ) -> Result<HttpResponse, APIError> {
-	let new_mount_dirs = new_mount_dirs
+	let new_mount_dirs: Vec<MountDir> = new_mount_dirs
 		.to_owned()
 		.into_iter()
 		.map(|m| m.into())
@@ -515,10 +516,8 @@ async fn update_user(
 	user_update: Json<dto::UserUpdate>,
 ) -> Result<HttpResponse, APIError> {
 	if let Some(auth) = &admin_rights.auth {
-		if auth.username == name.as_str() {
-			if user_update.new_is_admin == Some(false) {
-				return Err(APIError::OwnAdminPrivilegeRemoval);
-			}
+		if auth.username == name.as_str() && user_update.new_is_admin == Some(false) {
+			return Err(APIError::OwnAdminPrivilegeRemoval);
 		}
 	}
 

src/service/dto.rs

@@ -1,6 +1,7 @@
 use serde::{Deserialize, Serialize};
 
 use crate::app::{config, ddns, settings, thumbnail, user, vfs};
+use std::convert::From;
 
 pub const API_MAJOR_VERSION: i32 = 6;
 pub const API_MINOR_VERSION: i32 = 0;
@@ -60,6 +61,7 @@ pub enum ThumbnailSize {
 	Native,
 }
 
+#[allow(clippy::clippy::clippy::from_over_into)]
 impl Into<Option<u32>> for ThumbnailSize {
 	fn into(self) -> Option<u32> {
 		match self {

src/test.rs

@@ -7,7 +7,7 @@ macro_rules! test_name {
 		let file_name = file_name.replace("/", "-");
 		let file_name = file_name.replace("\\", "-");
 		format!("{}-line-{}", file_name, line!())
-		}};
+	}};
 }
 
 pub fn prepare_test_directory<T: AsRef<str>>(test_name: T) -> PathBuf {

src/utils.rs

@@ -12,6 +12,7 @@ macro_rules! match_ignore_case {
 }
 pub use crate::match_ignore_case;
 
+#[allow(clippy::upper_case_acronyms)]
 #[derive(Debug, PartialEq)]
 pub enum AudioFormat {
 	AIFF,