From 9bd93434fbefc56ac6c154c569e064cc7e5f956d Mon Sep 17 00:00:00 2001
From: Nathan Perry <avaglir@gmail.com>
Date: Sat, 29 Jul 2017 18:02:10 -0400
Subject: working on adding playback commands

---
 downloader/download_manager.go | 82 ++++++++++++++++++++++++------------------
 downloader/downloader.go       | 29 +++++++++++----
 2 files changed, 70 insertions(+), 41 deletions(-)

(limited to 'downloader')

diff --git a/downloader/download_manager.go b/downloader/download_manager.go
index c0ceecb..16054ae 100644
--- a/downloader/download_manager.go
+++ b/downloader/download_manager.go
@@ -12,6 +12,7 @@ const (
 	Clear DlMessage = iota
 	Pause
 	Play
+	Skip
 )
 
 type playBundle struct {
@@ -43,50 +44,61 @@ func NewManager(s *discordgo.Session, guildID string, voiceChanID string) *Downl
 }
 
 func (m *DownloadManager) playFromQueue() {
-	for dl := range m.dls {
-		conn, err := m.session.ChannelVoiceJoin(m.guildID, m.voiceID, false, false)
-		if err != nil {
-			log.Errorf("unable to connect to the voice channel: %q", err)
-			time.Sleep(1 * time.Second)
-			break
-		}
+	for {
+		select {
+		case <-m.PlayState: // ignore play state updates while not playing anything
+		case dl := <-m.dls:
+			conn, err := m.session.ChannelVoiceJoin(m.guildID, m.voiceID, false, false)
+			if err != nil {
+				log.Errorf("unable to connect to the voice channel: %q", err)
+				time.Sleep(1 * time.Second)
+				break
+			}
 
-		out, _ := dl.Start()
+			m.session.UpdateStatus(0, dl.info.Url.Host)
+			out := dl.Start()
 
-		playState := Play
-		conn.Speaking(true)
+			playState := Play
+			conn.Speaking(true)
 
-		cleanup := func() {
-			conn.Speaking(false)
-			conn.Disconnect()
-		}
+			cleanup := func() {
+				conn.Speaking(false)
+				conn.Disconnect()
+				m.session.UpdateStatus(0, "literally nothing")
+			}
 
-	inner:
-		for {
-			switch playState {
-			case Clear:
-				for {
-					select {
-					case <-m.PlayState:
-					default:
+		inner:
+			for {
+				switch playState {
+				case Clear:
+					dl.Stop()
+					for {
+						select {
+						case dl := <-m.dls:
+							dl.Stop()
+							dl.Start() // this is a hacky way of ensuring all the wavs are closed and cleaned up
+						default:
+						}
 					}
-				}
-				break inner
-			case Pause:
-				playState = <-m.PlayState
-			case Play:
-				select { // first check if we have a state update message coming in
-				case playState = <-m.PlayState:
-				case elem, ok := <-out:
-					if !ok {
-						break inner
+					break inner
+				case Skip:
+					break inner
+				case Pause:
+					playState = <-m.PlayState
+				case Play:
+					select { // first check if we have a state update message coming in
+					case playState = <-m.PlayState:
+					case elem, ok := <-out:
+						if !ok {
+							break inner
+						}
+
+						conn.OpusSend <- elem
 					}
-
-					conn.OpusSend <- elem
 				}
 			}
+			cleanup()
 		}
-		cleanup()
 	}
 }
 
diff --git a/downloader/downloader.go b/downloader/downloader.go
index 6abe7f0..b7645da 100644
--- a/downloader/downloader.go
+++ b/downloader/downloader.go
@@ -62,13 +62,21 @@ func (d *downloader) Stop() {
 	})
 }
 
-func (d *downloader) Start() (<-chan []byte, <-chan struct{}) {
+func (d *downloader) Start() <-chan []byte {
 	out := make(chan []byte, 1024)
-	done := make(chan struct{}, 1)
 
 	go func() {
-		defer close(done)
 		defer close(out)
+		select {
+		case <-d.done:
+			for wavB := range d.pb {
+				wavB.wav.Stop()
+				wavB.cleanup()
+			}
+			return
+		default:
+		}
+
 		for wavB := range d.pb {
 			wavB.wav.Start(out)
 
@@ -78,17 +86,22 @@ func (d *downloader) Start() (<-chan []byte, <-chan struct{}) {
 				wavB.cleanup()
 
 			case <-wavB.wav.Done:
-				break
 			}
 		}
 	}()
 
-	return out, done
+	return out
 }
 
 func (d *downloader) schedule() {
 	defer close(d.pb)
 	for i := 0; ; i++ {
+		select {
+		case <-d.done:
+			return
+		default:
+		}
+
 		clipStart := time.Duration(i)*clipTime + d.StartTime
 		clipEnd := time.Duration(i+1)*clipTime + d.StartTime
 
@@ -107,7 +120,11 @@ func (d *downloader) schedule() {
 			return
 		}
 
-		d.pb <- wavb
+		select {
+		case d.pb <- wavb:
+		case <-d.done:
+			return
+		}
 	}
 }
 
-- 
cgit v1.3.1