From 1aa216f21d29b0aa92a738d43c572c33799dfef5 Mon Sep 17 00:00:00 2001
From: Toby Vincent <tobyv@tobyvin.dev>
Date: Thu, 1 Aug 2024 11:20:20 -0500
Subject: perf: use LazyLock to get colors from env

---
 src/listener.rs | 24 +++++++++++++-----------
 1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/src/listener.rs b/src/listener.rs
index 208c161..6414fb3 100644
--- a/src/listener.rs
+++ b/src/listener.rs
@@ -1,4 +1,4 @@
-use std::{ops::ControlFlow, time::Duration};
+use std::{ops::ControlFlow, sync::LazyLock, time::Duration};
 
 use tokio::task::JoinHandle;
 use tokio_stream::StreamExt;
@@ -12,6 +12,15 @@ use crate::{
 
 const TICK_RATE: Duration = Duration::from_millis(500);
 
+/// Colors to use for PlaybackStatus
+static COLORS: LazyLock<[String; 3]> = LazyLock::new(|| {
+    [
+        std::env::var("BASE16_COLOR_00_HEX").unwrap_or("1d2021".into()), // black
+        std::env::var("BASE16_COLOR_0C_HEX").unwrap_or("8ec07c".into()), // cyan
+        std::env::var("BASE16_COLOR_0A_HEX").unwrap_or("fabd2f".into()), // yellow
+    ]
+});
+
 pub async fn listeners(blocks: Blocks) -> Result<(), Error> {
     let conn = Connection::session().await?;
 
@@ -20,10 +29,6 @@ pub async fn listeners(blocks: Blocks) -> Result<(), Error> {
         .build()
         .await?;
 
-    let black = std::env::var("BASE16_COLOR_00_HEX").ok();
-    let cyan = std::env::var("BASE16_COLOR_0C_HEX").ok();
-    let yellow = std::env::var("BASE16_COLOR_0A_HEX").ok();
-
     let mut rotator: Option<JoinHandle<Result<(), Error>>> = None;
     let mut old_title = String::new();
 
@@ -37,7 +42,7 @@ pub async fn listeners(blocks: Blocks) -> Result<(), Error> {
         tokio::select! {
             Some(prop) = metadata.next() => handle_metadata(prop, blocks.clone(),  &mut old_title, &mut rotator).await,
             Some(prop) = prev.next() =>  handle_prev_next(prop, blocks.clone(), '󰒮', "mpris-prev").await,
-            Some(prop) = play.next() => handle_play(prop, blocks.clone(), black.clone(), cyan.clone(), yellow.clone()).await,
+            Some(prop) = play.next() => handle_play(prop, blocks.clone()).await,
             Some(prop) = next.next() =>  handle_prev_next(prop, blocks.clone(), '󰒭', "mpris-next").await,
             Some(prop) = volume.next() => handle_volume(prop, blocks.clone()).await,
             else => {
@@ -131,13 +136,10 @@ async fn handle_prev_next(
 async fn handle_play(
     prop: PropertyChanged<'_, PlaybackStatus>,
     blocks: Blocks,
-    black: Option<String>,
-    cyan: Option<String>,
-    yellow: Option<String>,
 ) -> ControlFlow<Result<(), Error>> {
     let (icon, color, bg) = match prop.get().await {
-        Ok(PlaybackStatus::Playing) => ('󰏤', black.clone(), cyan.clone()),
-        Ok(PlaybackStatus::Paused) => ('󰐊', black.clone(), yellow.clone()),
+        Ok(PlaybackStatus::Playing) => ('󰏤', Some(COLORS[0].clone()), Some(COLORS[1].clone())),
+        Ok(PlaybackStatus::Paused) => ('󰐊', Some(COLORS[0].clone()), Some(COLORS[2].clone())),
         Ok(PlaybackStatus::Stopped) => ('󰐊', None, None),
         Err(_) => return ControlFlow::Continue(()),
     };
-- 
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