initial WIP commit

1 files changed, 77 insertions, 0 deletions

diff --git a/spotify.go b/spotify.go
new file mode 100644
index 0000000..a813254
--- /dev/null
+++ b/spotify.go
@@ -0,0 +1,77 @@
+package main
+
+// The spotify backend is based on the librespot-golang code released under MIT
+// license.
+// Authors of the librespot-golang code are:
+// Copyright (c) 2015 Paul Lietar
+// Copyright (c) 2015 badfortrains
+// Copyright (c) 2018 Guillaume "xplodwild" Lesniak
+
+import (
+	"errors"
+	"os"
+
+	// "github.com/librespot-org/librespot-golang/Spotify"
+	"github.com/librespot-org/librespot-golang/librespot"
+	"github.com/librespot-org/librespot-golang/librespot/core"
+	// "github.com/librespot-org/librespot-golang/librespot/utils"
+	"github.com/xlab/portaudio-go/portaudio"
+	// "github.com/xlab/vorbis-go/decoder"
+)
+
+const (
+	deviceName = "wrms"
+	// The number of samples per channel in the decoded audio
+	samplesPerChannel = 2048
+	// The samples bit depth
+	bitDepth = 16
+	// The samples format
+	sampleFormat = portaudio.PaFloat32
+)
+
+type SpotifyBackend struct {
+	session *core.Session
+}
+
+func NewSpotify() (*SpotifyBackend, error) {
+	spotify := SpotifyBackend{}
+
+	if err := portaudio.Initialize(); paError(err) {
+		return nil, errors.New(paErrorText(err))
+	}
+
+	var err error
+
+	username := os.Getenv("WRMS_SPOTIFY_USER")
+	password := os.Getenv("WRMS_SPOTIFY_PASSWORD")
+	if username == "" || password == "" {
+		return nil, errors.New("User and password for spotify must be provided")
+	}
+
+	spotify.session, err = librespot.Login(username, password, deviceName)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &spotify, nil
+}
+
+func (spotify *SpotifyBackend) Play(song Song) {
+}
+
+func (spotify *SpotifyBackend) Pause() {
+}
+
+func (spotify *SpotifyBackend) Search(keyword string) []Song {
+	return []Song{}
+}
+
+// PortAudio helpers
+func paError(err portaudio.Error) bool {
+	return portaudio.ErrorCode(err) != portaudio.PaNoError
+}
+
+func paErrorText(err portaudio.Error) string {
+	return "PortAudio error: " + portaudio.GetErrorText(err)
+}