From 53d24c5781df11ea22889536f467d9531f76a9f0 Mon Sep 17 00:00:00 2001
From: "Alexander \"Arav\" Andreev" <me@arav.su>
Date: Sun, 12 Mar 2023 22:25:58 +0400
Subject: [PATCH] Store current song in a separate variable. A base for most
 listened song functionality.

---
 internal/radio/icecast.go | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/internal/radio/icecast.go b/internal/radio/icecast.go
index 967c481..fc57a46 100644
--- a/internal/radio/icecast.go
+++ b/internal/radio/icecast.go
@@ -22,6 +22,7 @@ const (
 )
 
 var (
+	currentlyPlaying     Song
 	lastPlayedCache      []Song
 	lastPlayedCacheMutex sync.Mutex
 )
@@ -129,12 +130,10 @@ func icecastLastPlayedSongs(playlistPath string, n int) ([]Song, error) {
 
 	lines := bytes.Split(buf, []byte("\n"))
 
-	if len(lines) < 2 {
+	if len(lines) < 1 {
 		return nil, nil
 	}
 
-	lines = lines[:len(lines)]
-
 	if len(lines) > n {
 		lines = lines[len(lines)-n:]
 	}
@@ -190,10 +189,15 @@ func (pw *PlaylistLogWatcher) Watch(playlistPath string, n int) (err error) {
 				if mask&syscall.IN_MODIFY > 0 {
 					lastPlayedCacheMutex.Lock()
 					if songs, err := icecastLastPlayedSongs(playlistPath, 1); err == nil && len(songs) > 0 {
-						if len(lastPlayedCache) == n {
-							lastPlayedCache = append(lastPlayedCache[1:], songs...)
+						if currentlyPlaying.Time == "" {
+							currentlyPlaying = songs[0]
 						} else {
-							lastPlayedCache = append(lastPlayedCache, songs...)
+							if len(lastPlayedCache) == n {
+								lastPlayedCache = append(lastPlayedCache[1:], currentlyPlaying)
+							} else {
+								lastPlayedCache = append(lastPlayedCache, currentlyPlaying)
+							}
+							currentlyPlaying = songs[0]
 						}
 					}
 					lastPlayedCacheMutex.Unlock()