migrate to eventbus, add support to macos

internal/source/lyric.go

@@ -0,0 +1,70 @@
+package source
+
+import (
+	"AynaLivePlayer/core/events"
+	"AynaLivePlayer/global"
+	"AynaLivePlayer/pkg/eventbus"
+	"github.com/AynaLivePlayer/miaosic"
+)
+
+type lyricLoader struct {
+	Lyric     miaosic.Lyrics
+	prev      float64
+	prevIndex int
+}
+
+var lyricManager = &lyricLoader{}
+
+func createLyricLoader() {
+	var err error
+	err = global.EventBus.Subscribe("", events.PlayerPlayingUpdate, "internal.lyric.update", func(event *eventbus.Event) {
+		data := event.Data.(events.PlayerPlayingUpdateEvent)
+		if data.Removed {
+			log.Debugf("current media removed, clear lyric")
+			lyricManager.Lyric = miaosic.ParseLyrics("", "")
+			return
+		}
+		log.Infof("update lyric for %s", data.Media.Info.Title)
+		lyric, err := miaosic.GetMediaLyric(data.Media.Info.Meta)
+		if err == nil && len(lyric) > 0 {
+			lyricManager.Lyric = lyric[0]
+		} else {
+			lyricManager.Lyric = miaosic.ParseLyrics("", "")
+			log.Errorf("failed to get lyric for %s (%s): %s", data.Media.Info.Title, data.Media.Info.Meta.ID(), err)
+		}
+		_ = global.EventBus.Publish(events.UpdateCurrentLyric, events.UpdateCurrentLyricData{
+			Lyrics: lyricManager.Lyric,
+		})
+	})
+	if err != nil {
+		log.ErrorW("Subscribe player playing update event failed", "error", err)
+	}
+	err = global.EventBus.Subscribe("", events.PlayerPropertyTimePosUpdate, "internal.lyric.update_current", func(event *eventbus.Event) {
+		time := event.Data.(events.PlayerPropertyTimePosUpdateEvent).TimePos
+		idx := lyricManager.Lyric.FindIndex(time)
+		if idx == lyricManager.prevIndex {
+			return
+		}
+		lyricManager.prevIndex = idx
+		_ = global.EventBus.Publish(
+			events.PlayerLyricPosUpdate,
+			events.PlayerLyricPosUpdateEvent{
+				CurrentIndex: idx,
+				Time:         time,
+				CurrentLine:  lyricManager.Lyric.Find(time),
+				Total:        len(lyricManager.Lyric.Content),
+			})
+		return
+	})
+	if err != nil {
+		log.ErrorW("Subscribe player time position update event failed", "error", err)
+	}
+	err = global.EventBus.Subscribe("", events.CmdGetCurrentLyric, "internal.lyric.request", func(event *eventbus.Event) {
+		_ = global.EventBus.Reply(event, events.UpdateCurrentLyric, events.UpdateCurrentLyricData{
+			Lyrics: lyricManager.Lyric,
+		})
+	})
+	if err != nil {
+		log.ErrorW("Subscribe player lyric request command event failed", "error", err)
+	}
+}