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((fill-column . 88) (indent-tabs-mode . nil) (elisp-lint-indent-specs . ((use-package . 1) - (reformatter-define . 1))) - ))) + (reformatter-define . 1))))) + (rust-mode + . ((eglot-workspace-configuration + . (:rust-analyzer (:linkedProjects ["./home-config/dotfiles/eww/utils/Cargo.toml"])))))) diff --git a/flake.nix b/flake.nix index 4f9ef8e2..4d7262a5 100644 --- a/flake.nix +++ b/flake.nix @@ -132,7 +132,17 @@ let inherit (sops-nix.packages.x86_64-linux) sops-init-gpg-key sops-import-keys-hook; inherit (self.packages.x86_64-linux) commit-nvfetcher; - inherit (nixpkgs.legacyPackages.x86_64-linux) nvchecker nvfetcher; + inherit (nixpkgs.legacyPackages.x86_64-linux) + cargo + clippy + dbus + nvchecker + nvfetcher + pkg-config + rust-analyzer + rustc + rustfmt + ; home-manager-bin = home-manager.packages.x86_64-linux.default; in nixpkgs.legacyPackages.x86_64-linux.mkShell { @@ -142,6 +152,14 @@ commit-nvfetcher home-manager-bin sops-init-gpg-key + + cargo + clippy + dbus + rust-analyzer + rustc + rustfmt + pkg-config ]; sopsPGPKeyDirs = [ diff --git a/home-config/dotfiles/eww/utils/.gitignore b/home-config/dotfiles/eww/utils/.gitignore new file mode 100644 index 00000000..2f7896d1 --- 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["kv", "kv_std"] } +pretty_env_logger = "0.5.0" +serde = { version = "1.0.217", features = ["serde_derive"] } +serde_json = "1.0.134" +thiserror = "2.0.9" +tokio = { version = "1.42.0", features = ["macros"] } +zbus = { version = "5.2.0", features = ["tokio"] } diff --git a/home-config/dotfiles/eww/utils/src/bin/bluetooth-monitor.rs b/home-config/dotfiles/eww/utils/src/bin/bluetooth-monitor.rs new file mode 100644 index 00000000..1e4c1dc7 --- /dev/null +++ b/home-config/dotfiles/eww/utils/src/bin/bluetooth-monitor.rs @@ -0,0 +1,16 @@ +use futures::StreamExt; +use log::LevelFilter; +use utils::bluetooth_monitor::BluetoothMonitor; + +#[tokio::main(flavor = "current_thread")] +async fn main() { + pretty_env_logger::formatted_builder() + .filter_level(LevelFilter::Info) + .init(); + + let monitor = BluetoothMonitor::try_new().await.unwrap(); + let mut stream = monitor.monitor().await; + while let Some(event) = stream.next().await { + println!("{:?}", event); + } +} diff --git a/home-config/dotfiles/eww/utils/src/bluetooth_monitor.rs b/home-config/dotfiles/eww/utils/src/bluetooth_monitor.rs new file mode 100644 index 00000000..a7662cdf --- /dev/null +++ b/home-config/dotfiles/eww/utils/src/bluetooth_monitor.rs @@ -0,0 +1,153 @@ +use std::collections::HashMap; + +/// Bluetooth device/status monitoring. +use futures::{stream, Stream}; +use log::error; +use zbus::{fdo::ObjectManagerProxy, proxy, Connection}; + +use crate::MacAddress; + +/// Enum to hold the current Bluetooth state +#[derive(Debug)] +pub enum BluetoothState { + NoService, + NoAdapter, + ConnectedDevices(Vec), +} + +/// Simple handler for tracking the state of a set of Bluetooth +/// devices +pub struct BluetoothMonitor<'a> { + object_manager: ObjectManagerProxy<'a>, +} + +impl<'a> BluetoothMonitor<'a> { + /// Basic constructor + pub async fn try_new() -> Result { + let connection = Connection::system().await?; + + let object_manager = ObjectManagerProxy::builder(&connection) + .path("/")? + .destination("org.bluez")? + .build() + .await?; + + Ok(Self { object_manager }) + } + + /// Monitor the Bluetooth state, emitting the current state + /// whenever something changes + pub async fn monitor(&self) -> impl Stream + use<'_> { + Box::pin(stream::once(async { self.get_state_proactively().await })) + } + + /// Get the current Bluetooth state by explicitly calling methods + /// to find out what BlueZ is currently managing. + async fn get_state_proactively(&self) -> BluetoothState { + match self.object_manager.get_managed_objects().await { + Ok(objects) => { + if !objects + .iter() + .any(|(_, object)| object.contains_key("org.bluez.Adapter1")) + { + return BluetoothState::NoAdapter; + } + + let devices: Vec = objects + .into_iter() + .filter_map(|(path, object)| { + object + .get("org.bluez.Device1") + .map(|device| (path, device.clone())) + }) + .filter(is_device_connected) + .filter_map(get_device_address) + .collect(); + + BluetoothState::ConnectedDevices(devices) + } + Err(error) => { + error!(error:?; "Error connecting to BlueZ: {}", error); + BluetoothState::NoService + } + } + } + + // /// Monitor connections to the given MAC addresses + // // TODO: This should probably be a stream of state changes, which + // // the front-end can then turn into pretty JSON messages to be + // // read by eww + // async fn monitor_state(&self, adapter: OwnedObjectPath) -> impl Stream { + // todo!() + // // let proxy = BluezDeviceProxy::builder(&self.connection) + // // .path(format!("{adapter}/dev_80_C3_BA_6A_26_88"))? + // // .build() + // // .await?; + + // // let mut stream = proxy.receive_connected_changed().await; + + // // while let Some(change) = stream.next().await { + // // println!("{:?}", change.get().await); + // // } + + // // todo!() + // } +} + +/// BlueZ device interface +#[proxy(default_service = "org.bluez", interface = "org.bluez.Device1")] +trait BluezDevice { + #[zbus(property)] + fn connected(&self) -> zbus::Result; +} + +type BluetoothDevice = ( + zbus::zvariant::OwnedObjectPath, + HashMap, +); + +/// Get the address of a device +fn get_device_address(device: BluetoothDevice) -> Option { + let address = device.1.get("Address")?; + + let Ok(address) = <&str>::try_from(address) else { + error!( + "Invalid MAC address for device Symbol’s value as variable is void: {}: {:?}", + device.0, address + ); + return None; + }; + + let Ok(address) = MacAddress::try_from(address.to_owned()) else { + error!( + "Invalid MAC address for device Symbol’s value as variable is void: {}: {:?}", + device.0, address + ); + return None; + }; + + Some(address) +} + +/// Test if a device is connected +fn is_device_connected(device: &BluetoothDevice) -> bool { + let Some(connected) = device.1.get("Connected") else { + error!( + "Connection property missing for device Symbol’s value as variable is void: {}", + device.0 + ); + return false; + }; + + let Ok(connected) = ::try_from(connected) else { + error!( + "Invalid connection property for device Symbol’s value as variable is void: {}: {:?}", + device.0, connected + ); + return false; + }; + + connected +} + +type Result = std::result::Result; diff --git a/home-config/dotfiles/eww/utils/src/lib.rs b/home-config/dotfiles/eww/utils/src/lib.rs new file mode 100644 index 00000000..15ba2508 --- /dev/null +++ b/home-config/dotfiles/eww/utils/src/lib.rs @@ -0,0 +1,39 @@ +pub mod bluetooth_monitor; + +use lazy_regex::regex_is_match; +use std::fmt::Display; +use thiserror::Error; + +#[derive(Debug, Error)] +pub enum UtilError { + #[error("Invalid MAC address: {0}")] + InvalidMacAddress(String), +} +type Result = std::result::Result; + +/// A MAC address +pub struct MacAddress(String); + +impl Display for MacAddress { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + write!(f, "{}", self.0) + } +} + +impl std::fmt::Debug for MacAddress { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + Display::fmt(&self, f) + } +} + +impl TryFrom for MacAddress { + type Error = UtilError; + + fn try_from(value: String) -> Result { + if regex_is_match!("([[:xdigit:]]{2}:){5}[[:xdigit:]]{2}", &value) { + Ok(Self(value)) + } else { + Err(UtilError::InvalidMacAddress(value)) + } + } +}