From f53f30963dbae4e7275f596ddf108d9becfb8c79 Mon Sep 17 00:00:00 2001
From: "Alexander \"Arav\" Andreev" <me@arav.su>
Date: Sat, 7 Oct 2023 05:16:16 +0400
Subject: [PATCH] sync.Mutex was replaced by sync.RWMutex for SongList.

---
 internal/radio/song.go | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/internal/radio/song.go b/internal/radio/song.go
index b2e4214..e53d7ce 100644
--- a/internal/radio/song.go
+++ b/internal/radio/song.go
@@ -45,7 +45,7 @@ func (s *Song) MarshalJSON() ([]byte, error) {
 }
 
 type SongList struct {
-	sync.Mutex
+	sync.RWMutex
 	current   Song
 	lastSongs []Song
 	maxLen    int
@@ -76,8 +76,8 @@ func (sl *SongList) Add(newSong Song) {
 
 // Current returns a currently playing song.
 func (sl *SongList) Current() *Song {
-	sl.Lock()
-	defer sl.Unlock()
+	sl.RLock()
+	defer sl.RUnlock()
 	if sl.current.StartAt.Year() == 1 {
 		return nil
 	}
@@ -96,8 +96,8 @@ func (sl *SongList) UpdateCurrentMaxListeners(listeners int) {
 
 // List returns a list of lastly played songs.
 func (sl *SongList) List() []Song {
-	sl.Lock()
-	defer sl.Unlock()
+	sl.RLock()
+	defer sl.RUnlock()
 	return sl.lastSongs
 }