scrobbler: watch for events and print song details

We create a module "mpd" to interact with our MPD instance. For now we
only have a single function to create a new client, which creates an
actual client for mpd (and we ping the instance every 30 seconds), and
a watcher to receive new events.

The tool "scrobbler" then wait for new events and display songs
information.

1 files changed, 35 insertions, 0 deletions

diff --git a/tools/mpd-stats/cmd/mpd-scrobbler/main.go b/tools/mpd-stats/cmd/mpd-scrobbler/main.go
new file mode 100644
index 0000000..9929225
--- /dev/null
+++ b/tools/mpd-stats/cmd/mpd-scrobbler/main.go
@@ -0,0 +1,35 @@
+package main
+
+import (
+	"log"
+
+	"golang.fcuny.net/mpd-stats/internal/mpd"
+)
+
+func main() {
+	net := "tcp"
+	addr := "localhost:6600"
+
+	c, err := mpd.NewMPD(net, addr)
+	if err != nil {
+		log.Fatalf("failed to create a client: %v", err)
+	}
+
+	defer c.Watcher.Close()
+	defer c.Client.Close()
+
+	for {
+		e := <-c.Watcher.Event
+		if e != "" {
+			attrs, err := c.Client.CurrentSong()
+			if err != nil {
+				log.Fatalf("could not get current song: %v", err)
+			}
+			currentAlbum := attrs["Album"]
+			artist := attrs["Artist"]
+			song := attrs["Title"]
+			duration := attrs["duration"]
+			log.Printf("we're playing %s/%s/%s [%s]\n", artist, currentAlbum, song, duration)
+		}
+	}
+}