feat: remember volume

Cargo.lock

@@ -658,6 +658,27 @@ dependencies = [
  "crypto-common",
 ]
 
+[[package]]
+name = "dirs"
+version = "5.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44c45a9d03d6676652bcb5e724c7e988de1acad23a711b5217ab9cbecbec2225"
+dependencies = [
+ "dirs-sys",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "520f05a5cbd335fae5a99ff7a6ab8627577660ee5cfd6a94a6a929b52ff0321c"
+dependencies = [
+ "libc",
+ "option-ext",
+ "redox_users",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "dtoa"
 version = "1.0.9"
@@ -1257,6 +1278,16 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "libredox"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c0ff37bd590ca25063e35af745c343cb7a0271906fb7b37e4813e8f79f00268d"
+dependencies = [
+ "bitflags 2.6.0",
+ "libc",
+]
+
 [[package]]
 name = "linux-raw-sys"
 version = "0.4.14"
@@ -1288,6 +1319,7 @@ dependencies = [
  "bytes",
  "clap",
  "crossterm",
+ "dirs",
  "eyre",
  "futures",
  "lazy_static",
@@ -1589,6 +1621,12 @@ dependencies = [
  "vcpkg",
 ]
 
+[[package]]
+name = "option-ext"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
+
 [[package]]
 name = "ordered-stream"
 version = "0.2.0"
@@ -1849,6 +1887,17 @@ dependencies = [
  "bitflags 2.6.0",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba009ff324d1fc1b900bd1fdb31564febe58a8ccc8a6fdbb93b543d33b13ca43"
+dependencies = [
+ "getrandom",
+ "libredox",
+ "thiserror",
+]
+
 [[package]]
 name = "regex"
 version = "1.11.0"
@@ -2864,6 +2913,15 @@ dependencies = [
  "windows-targets 0.42.2",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets 0.48.5",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.52.0"
@@ -2897,6 +2955,21 @@ dependencies = [
  "windows_x86_64_msvc 0.42.2",
 ]
 
+[[package]]
+name = "windows-targets"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
+dependencies = [
+ "windows_aarch64_gnullvm 0.48.5",
+ "windows_aarch64_msvc 0.48.5",
+ "windows_i686_gnu 0.48.5",
+ "windows_i686_msvc 0.48.5",
+ "windows_x86_64_gnu 0.48.5",
+ "windows_x86_64_gnullvm 0.48.5",
+ "windows_x86_64_msvc 0.48.5",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.52.6"
@@ -2919,6 +2992,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.52.6"
@@ -2931,6 +3010,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.52.6"
@@ -2943,6 +3028,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.52.6"
@@ -2961,6 +3052,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.52.6"
@@ -2973,6 +3070,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.52.6"
@@ -2985,6 +3088,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.52.6"
@@ -2997,6 +3106,12 @@ version = "0.42.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.52.6"

Cargo.toml

@@ -29,6 +29,7 @@ rand = "0.8.5"
 tokio = { version = "1.40.0", features = [
     "macros",
     "rt-multi-thread",
+    "fs"
 ], default-features = false }
 futures = "0.3.30"
 arc-swap = "1.7.1"
@@ -37,11 +38,14 @@ arc-swap = "1.7.1"
 reqwest = "0.12.7"
 bytes = "1.7.2"
 
+# I/O
+crossterm = { version = "0.28.1", features = ["event-stream"] }
+rodio = { version = "0.19.0", features = ["symphonia-mp3"], default-features = false }
+mpris-server = { version = "0.8.1", optional = true }
+dirs = "5.0.1"
+
 # Misc
 scraper = "0.20.0"
-rodio = { version = "0.19.0", features = ["symphonia-mp3"], default-features = false }
-crossterm = { version = "0.28.1", features = ["event-stream"] }
 Inflector = "0.11.4"
 lazy_static = "1.5.0"
 libc = "0.2.159"
-mpris-server = { version = "0.8.1", optional = true }

src/play.rs

@@ -1,23 +1,88 @@
 //! Responsible for the basic initialization & shutdown of the audio server & frontend.
 
+use std::path::PathBuf;
 use std::sync::Arc;
 
+use eyre::eyre;
+use tokio::fs;
 use tokio::{sync::mpsc, task};
 
 use crate::player::Player;
 use crate::player::{ui, Messages};
 use crate::Args;
 
+/// The attributes that are applied at startup.
+/// This includes the volume, but also the config file.
+///
+/// The volume is seperated from the config since it specifically
+/// will be written by lowfi, whereas the config will not.
+pub struct InitialProperties {
+    /// The volume, as a percentage.
+    pub volume: u16,
+}
+
+impl InitialProperties {
+    /// Retrieves the config directory.
+    async fn config() -> eyre::Result<PathBuf> {
+        let config = dirs::config_dir()
+            .ok_or(eyre!("Couldn't find config directory"))?
+            .join(PathBuf::from("lowfi"));
+
+        if !config.exists() {
+            fs::create_dir_all(&config).await?;
+        }
+
+        Ok(config)
+    }
+
+    /// Loads the [InitialProperties], including the config and volume file.
+    pub async fn load() -> eyre::Result<Self> {
+        let config = Self::config().await?;
+
+        let volume = config.join(PathBuf::from("volume.txt"));
+
+        // Basically just read from the volume file if it exists, otherwise return 100.
+        let volume = if volume.exists() {
+            let contents = fs::read_to_string(volume).await?;
+            let stripped = contents.strip_suffix("%").unwrap_or(&contents);
+            stripped
+                .parse()
+                .map_err(|_| eyre!("volume.txt file is invalid"))?
+        } else {
+            fs::write(&volume, "100").await?;
+            100u16
+        };
+
+        Ok(InitialProperties { volume })
+    }
+
+    /// Saves `volume.txt`, and uses the home directory which was previously acquired.
+    pub async fn save_volume(volume: f32) -> eyre::Result<()> {
+        let config = Self::config().await?;
+        let path = config.join(PathBuf::from("volume.txt"));
+
+        fs::write(path, ((volume * 100.0).abs().round() as u16).to_string()).await?;
+
+        Ok(())
+    }
+}
+
 /// Initializes the audio server, and then safely stops
 /// it when the frontend quits.
 pub async fn play(args: Args) -> eyre::Result<()> {
+    // Load the initial properties (volume & config).
+    let properties = InitialProperties::load().await?;
+
     let (tx, rx) = mpsc::channel(8);
     let player = Arc::new(Player::new(!args.alternate).await?);
     let ui = task::spawn(ui::start(Arc::clone(&player), tx.clone(), args));
 
     tx.send(Messages::Init).await?;
 
-    Player::play(Arc::clone(&player), tx.clone(), rx).await?;
+    Player::play(Arc::clone(&player), properties, tx.clone(), rx).await?;
+
+    // Save the volume.txt file for the next session.
+    InitialProperties::save_volume(player.sink.volume()).await?;
     player.sink.stop();
     ui.abort();
 

src/player.rs

@@ -18,7 +18,10 @@ use tokio::{
     task,
 };
 
-use crate::tracks::{DecodedTrack, Track, TrackInfo};
+use crate::{
+    play::InitialProperties,
+    tracks::{DecodedTrack, Track, TrackInfo},
+};
 
 pub mod downloader;
 pub mod ui;
@@ -236,6 +239,7 @@ impl Player {
     /// skip tracks or pause.
     pub async fn play(
         player: Arc<Self>,
+        properties: InitialProperties,
         tx: Sender<Messages>,
         mut rx: Receiver<Messages>,
     ) -> eyre::Result<()> {
@@ -246,6 +250,9 @@ impl Player {
         // Start buffering tracks immediately.
         itx.send(()).await?;
 
+        // Set the initial sink volume to the one specified.
+        player.sink.set_volume(properties.volume as f32 / 100.0);
+
         loop {
             let clone = Arc::clone(&player);