feat: update SketchyBar

Add support for directly updating SketchyBar via
[Mach](https://developer.apple.com/library/archive/documentation/Darwin/Conceptual/KernelProgramming/Mach/Mach.html)

Resolves #129

Cargo.toml

@@ -20,10 +20,14 @@ lazy_static = "1.4.0"
 log = "0.4.20"
 rustls = "0.21.7"
 serde = { version = "1", features = ["derive"] }
-thiserror = "1.0.49"
-ureq = { version = "2.8.0", features = ["json"] }
+sketchybar-rs = { version = "0.1.0", optional = true }
 sqlx = { version = "0.7", features = ["macros", "runtime-tokio", "sqlite"] }
+thiserror = "1.0.49"
 tokio = { version = "1.33", features = ["macros"] }
+ureq = { version = "2.8.0", features = ["json"] }
 
 [dev-dependencies]
 tempfile = "3.8.0"
+
+[features]
+sketchybar = ["sketchybar-rs"]

README.md

@@ -60,7 +60,11 @@ conditions location set "10001, usa"
 
 ### SketchyBar
 
-Here's how I'm using this with SketchyBar.
+[SketchyBar](https://github.com/FelixKratz/SketchyBar) is a very customizable bar app for macOS that is deliberately light on resource usage (written in C vs more common WebView approach). Widgets in SketchyBar are refreshed (if need be) via "plugins" (typically shell scripts).
+
+#### Manual
+
+Here's how I'm using `conditions` with SketchyBar in the more traditional plugin approach.
 
 ```bash
 #!/bin/bash
@@ -74,6 +78,27 @@ sketchybar -m \
   --set weather label="${temp}°F"
 ```
 
+#### Direct Integration
+
+Alternatively `conditions` can directly update the running instance of SketchyBar without making calls from eg. Bash via `sketchybar -m`. In order to use this experimental version the `sketchybar` feature must be enabled on install.
+
+```bash
+cargo install conditions --features sketchybar
+```
+
+Then when setting up a weather widget in `sketchybarrc`, `conditions` can be invoked directly.
+
+```bash
+sketchybar \
+	--add item weather right \
+	--set weather \
+	update_freq=1800 \
+	icon.drawing=off \
+	script="$HOME/.cargo/bin/conditions current"
+```
+
+Note, at this time `conditions` is hard-coded with widgets named `weather` and `weather_logo`
+
 ## Tasks
 
 Run tasks from this directory via: `xc [task-name]`

src/conditions.rs

@@ -35,6 +35,10 @@ impl Conditions {
         };
 
         let conditions = CurrentConditions::get(&self.config, &location)?;
+
+        #[cfg(feature = "sketchybar")]
+        notify_sketchybar(&conditions)?;
+
         let output = self.to_output(conditions);
 
         Ok(ureq::serde_json::to_string(&output)?)
@@ -55,6 +59,20 @@ impl Conditions {
     }
 }
 
+#[cfg(feature = "sketchybar")]
+fn notify_sketchybar(conditions: &CurrentConditions) -> eyre::Result<String> {
+    #[allow(clippy::cast_possible_truncation)]
+    let message = format!(
+        "--set weather_logo icon=\"{}\" --set weather label=\"{}°F\"",
+        conditions.icon, conditions.temp_f as i32
+    );
+
+    match sketchybar_rs::message(&message) {
+        Ok(_) => Ok(String::new()),
+        Err(err) => Err(eyre::eyre!(err.to_string())),
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;

src/lib.rs

@@ -1,5 +1,8 @@
 #![deny(clippy::pedantic)]
 
+#[cfg(feature = "sketchybar")]
+extern crate sketchybar_rs;
+
 use clap::Parser;
 
 use args::{