Fix json output using join method

src/bin/hyper_headset_cli.rs

@@ -232,9 +232,9 @@ fn main() {
     if let Some(output_json) = matches.get_one::<bool>("json") {
         if *output_json {
             let properties = &device.get_device_state().device_properties;
-            let mut headset_info_string = "{\n".to_string();
+            let mut headset_info_json = "{\n  ".to_string();
 
-            let mut json_properties: Vec<String> = properties
+            let json_properties: Vec<String> = properties
                 .get_properties()
                 .iter()
                 .map(|property| match property {
@@ -255,35 +255,17 @@ fn main() {
                         property_descriptor,
                     ) => match &property_descriptor.data {
                         Some(data) => {
-                            format!("  \"{}\": \"{}\",\n", property_descriptor.name, data)
+                            format!("\"{}\": \"{}\"", property_descriptor.name, data)
                         }
                         _ => "".to_string(),
                     },
                 })
                 .collect();
 
-            // The last property needs to end without a comma
-            match json_properties.last_mut() {
-                #[allow(unused_assignments)]
-                Some(mut json_property) => {
-                    let mut last_property = json_property[0..(json_property.len() - 2)].to_string();
-                    last_property += "\n";
-                    json_property = &mut last_property;
-                }
-                None => {
-                    // Unreachable:
-                    // The program exits if no device is found 
-                    // but also has a property for the device being connected
-                    unreachable!();
-                }
-            }
+            headset_info_json += &json_properties.join(",\n   ");
 
-            for json_property in json_properties {
-                headset_info_string += &json_property;
-            }
-
-            headset_info_string += "}";
-            println!("{}", headset_info_string);
+            headset_info_json += "\n}";
+            println!("{}", headset_info_json);
         } else {
             println!("{}", device.get_device_state().device_properties);
         }

src/status_tray_not_linux.rs

@@ -3,9 +3,9 @@ use std::{
     sync::{mpsc::Sender, Arc, Mutex},
 };
 
+use hyper_headset::devices::{DeviceEvent, DeviceProperties, PropertyType};
 #[cfg(target_os = "windows")]
 use image::{Rgba, RgbaImage};
-use hyper_headset::devices::{DeviceEvent, DeviceProperties, PropertyType};
 use tray_icon::{
     menu::{CheckMenuItem, Menu, MenuEvent, MenuId, MenuItem, PredefinedMenuItem, Submenu},
     TrayIcon, TrayIconBuilder,
@@ -50,14 +50,7 @@ fn draw_rect(image: &mut RgbaImage, x: i32, y: i32, width: i32, height: i32, col
 }
 
 #[cfg(target_os = "windows")]
-fn draw_digit(
-    image: &mut RgbaImage,
-    digit: char,
-    x: i32,
-    y: i32,
-    scale: i32,
-    color: Rgba<u8>,
-) {
+fn draw_digit(image: &mut RgbaImage, digit: char, x: i32, y: i32, scale: i32, color: Rgba<u8>) {
     let rows = match digit {
         '0' => ["111", "101", "101", "101", "111"],
         // Narrow upright '1'.
@@ -170,7 +163,14 @@ fn render_windows_battery_icon_rgba(key: WindowsIconKey) -> Vec<u8> {
 
     let mut x = start_x;
     for (idx, digit) in text.chars().enumerate() {
-        draw_digit(&mut image, digit, x, start_y, scale, Rgba([10, 10, 10, 255]));
+        draw_digit(
+            &mut image,
+            digit,
+            x,
+            start_y,
+            scale,
+            Rgba([10, 10, 10, 255]),
+        );
         x += glyph_widths[idx] + spacing;
     }
 
@@ -404,7 +404,10 @@ impl TrayApp {
                         continue;
                     };
                     let menu_item = MenuItem::new(
-                        format!("{} {}{}", property.prefix, current_value, property.suffix),
+                        format!(
+                            "{} {}{}",
+                            property.pretty_name, current_value, property.suffix
+                        ),
                         false,
                         None,
                     );
@@ -415,7 +418,10 @@ impl TrayApp {
                         continue;
                     };
                     let submenu = Submenu::new(
-                        format!("{} {}{}", property.prefix, current_value, property.suffix),
+                        format!(
+                            "{} {}{}",
+                            property.pretty_name, current_value, property.suffix
+                        ),
                         property.property_type == PropertyType::ReadWrite,
                     );
 
@@ -446,7 +452,10 @@ impl TrayApp {
                     let create_event = property.create_event;
                     let update_sender = self.sender.clone();
                     let menu_item = MenuItem::new(
-                        format!("{} {}{}", property.prefix, current_value, property.suffix),
+                        format!(
+                            "{} {}{}",
+                            property.pretty_name, current_value, property.suffix
+                        ),
                         property.property_type == PropertyType::ReadWrite
                             && property.data.is_some(),
                         None,
@@ -467,7 +476,10 @@ impl TrayApp {
                         continue;
                     };
                     let menu_item = MenuItem::new(
-                        format!("{} {}{}", property.prefix, current_value, property.suffix),
+                        format!(
+                            "{} {}{}",
+                            property.pretty_name, current_value, property.suffix
+                        ),
                         false,
                         None,
                     );