From 2bcac6edd18214b7eb998972f3f99183d44b0a51 Mon Sep 17 00:00:00 2001
From: Pierre-Olivier Mercier <nemunaire@nemunai.re>
Date: Sat, 15 Oct 2022 13:29:25 +0200
Subject: [PATCH] Can listen to tracks in the browser

---
 api/tracks.go                                 | 18 +++++++++++++
 model/track.go                                | 27 +++++++++++++++++++
 .../routes/musiks/tracks/[tid]/+page.svelte   |  7 +++++
 3 files changed, 52 insertions(+)

diff --git a/api/tracks.go b/api/tracks.go
index 60a3dc2..39ba861 100644
--- a/api/tracks.go
+++ b/api/tracks.go
@@ -85,6 +85,24 @@ func declareTracksRoutes(cfg *config.Config, router *gin.RouterGroup) {
 	tracksRoutes.GET("", func(c *gin.Context) {
 		c.JSON(http.StatusOK, c.MustGet("track"))
 	})
+	tracksRoutes.GET("/stream", func(c *gin.Context) {
+		track := c.MustGet("track").(*reveil.Track)
+
+		size, err := track.Size()
+		if err != nil {
+			c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{"errmsg": fmt.Sprintf("Unable to open the track: %s", err.Error())})
+			return
+		}
+
+		fd, err := track.Open()
+		if err != nil {
+			c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{"errmsg": fmt.Sprintf("Unable to open the track: %s", err.Error())})
+			return
+		}
+		defer fd.Close()
+
+		c.DataFromReader(http.StatusOK, size, track.ContentType(), fd, map[string]string{})
+	})
 	tracksRoutes.PUT("", func(c *gin.Context) {
 		oldtrack := c.MustGet("track").(*reveil.Track)
 
diff --git a/model/track.go b/model/track.go
index a6ee991..1ec27f9 100644
--- a/model/track.go
+++ b/model/track.go
@@ -46,6 +46,33 @@ func LoadTracks(cfg *config.Config) (tracks []*Track, err error) {
 	return
 }
 
+func (t *Track) Open() (*os.File, error) {
+	return os.Open(t.Path)
+}
+
+func (t *Track) Size() (int64, error) {
+	if st, err := os.Stat(t.Path); err != nil {
+		return 0, err
+	} else {
+		return st.Size(), err
+	}
+}
+
+func (t *Track) ContentType() string {
+	switch filepath.Ext(t.Path) {
+	case ".flac":
+		return "audio/flac"
+	case ".mp3":
+		return "audio/mpeg"
+	case ".ogg":
+		return "audio/ogg"
+	case ".wav":
+		return "audio/vnd.wav"
+	}
+
+	return "application/octet-stream"
+}
+
 func (t *Track) Rename(newName string) error {
 	newPath := filepath.Join(filepath.Dir(t.Path), newName+filepath.Ext(t.Path))
 
diff --git a/ui/src/routes/musiks/tracks/[tid]/+page.svelte b/ui/src/routes/musiks/tracks/[tid]/+page.svelte
index 38c41e5..efdf1b4 100644
--- a/ui/src/routes/musiks/tracks/[tid]/+page.svelte
+++ b/ui/src/routes/musiks/tracks/[tid]/+page.svelte
@@ -52,6 +52,13 @@
             </ListGroupItem>
         </ListGroup>
 
+        <div class="my-2 d-flex justify-content-center">
+            <audio controls class="w-100 rounded">
+                <source src="api/tracks/{track.id}/stream">
+                Your browser does not support the audio element.
+            </audio>
+        </div>
+
         <ListGroup class="my-2 text-center">
             <ListGroupItem
                 action