first

README.md

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+## waybar-mpris
+
+a custom waybar component for displaying info from MPRIS2 players. Currently WIP.

go.mod

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+module github.com/hrfee/waybar-mpris
+
+go 1.15
+
+require (
+	github.com/godbus/dbus/v5 v5.0.3
+)

go.sum

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+github.com/godbus/dbus v4.1.0+incompatible h1:WqqLRTsQic3apZUK9qC5sGNfXthmPXzUZ7nQPrNITa4=
+github.com/godbus/dbus v4.1.0+incompatible/go.mod h1:/YcGZj5zSblfDWMMoOzV4fas9FZnQYTkDnsGvmh2Grw=
+github.com/godbus/dbus/v5 v5.0.3 h1:ZqHaoEF7TBzh4jzPmqVhE/5A1z9of6orkAe5uHoAeME=
+github.com/godbus/dbus/v5 v5.0.3/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=

main.go

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+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"github.com/godbus/dbus/v5"
+	"sort"
+	"strings"
+)
+
+type Player struct {
+	player                           dbus.BusObject
+	playing, stopped                 bool
+	playerName, title, artist, album string
+	metadata                         map[string]dbus.Variant
+	conn                             *dbus.Conn
+}
+
+func NewPlayer(conn *dbus.Conn, name string) *Player {
+	p := &Player{
+		player:     conn.Object(name, "/org/mpris/MediaPlayer2"),
+		conn:       conn,
+		playerName: strings.ReplaceAll(name, "org.mpris.MediaPlayer2.", ""),
+	}
+	p.Refresh()
+	return p
+}
+
+func (p *Player) Refresh() {
+	val, err := p.player.GetProperty("org.mpris.MediaPlayer2.Player.PlaybackStatus")
+	if err != nil {
+		panic(err)
+	}
+	if strings.Contains(val.String(), "Playing") {
+		p.playing = true
+		p.stopped = false
+	} else if strings.Contains(val.String(), "Paused") {
+		p.playing = false
+		p.stopped = false
+	} else {
+		p.playing = false
+		p.stopped = true
+	}
+	md, err := p.player.GetProperty("org.mpris.MediaPlayer2.Player.Metadata")
+	if err != nil {
+		return
+	}
+	p.metadata = md.Value().(map[string]dbus.Variant)
+	p.artist = strings.Join(p.metadata["xesam:artist"].Value().([]string), ", ")
+	p.title = p.metadata["xesam:title"].Value().(string)
+	p.album = p.metadata["xesam:album"].Value().(string)
+}
+
+func (p *Player) JSON() string {
+	data := map[string]string{}
+	data["tooltip"] = fmt.Sprintf(
+		"%s\nby %s\nfrom %s\n(%s)",
+		p.title,
+		p.artist,
+		p.album,
+		p.playerName)
+	var symbol string
+	if p.playing {
+		data["class"] = "playing"
+		symbol = ""
+	} else {
+		data["class"] = "paused"
+		symbol = "▶"
+	}
+	data["text"] = fmt.Sprintf(
+		"%s %s - %s - %s",
+		symbol,
+		p.artist,
+		p.album,
+		p.title)
+
+	text, _ := json.Marshal(data)
+	return string(text)
+}
+
+type Players []*Player
+
+func (s Players) Len() int {
+	return len(s)
+}
+
+func (s Players) Less(i, j int) bool {
+	// x, err := s[i].GetProperty("org.mpris.MediaPlayer2.Player.PlaybackStatus")
+	// y, err := s[j].GetProperty("org.mpris.MediaPlayer2.Player.PlaybackStatus")
+	s[i].Refresh()
+	s[j].Refresh()
+	var states [2]int
+	if s[i].playing {
+		states[0] = 1
+	}
+	if s[j].playing {
+		states[1] = 1
+	}
+	// if strings.Contains(x.String(), "Playing") {
+	// 	states[0] = 1
+	// }
+	// if strings.Contains(y.String(), "Playing") {
+	// 	states[1] = 1
+	// }
+	// fmt.Println(states[i])
+	// reverse
+	return states[0] > states[1]
+}
+
+func (s Players) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}
+
+func main() {
+	conn, err := dbus.SessionBus()
+	if err != nil {
+		panic(err)
+	}
+	var fd []string
+	err = conn.BusObject().Call("org.freedesktop.DBus.ListNames", 0).Store(&fd)
+	if err != nil {
+		panic(err)
+	}
+	var players Players
+	for _, name := range fd {
+		if strings.HasPrefix(name, "org.mpris.MediaPlayer2") {
+			//players = append(players, conn.Object(name, "/org/mpris/MediaPlayer2"))
+			players = append(players, NewPlayer(conn, name))
+		}
+	}
+	sort.Sort(players)
+	conn.BusObject().Call("org.freedesktop.DBus.AddMatch", 0,
+		"type='signal',path='/org/mpris/MediaPlayer2',interface='org.freedesktop.DBus.Properties'")
+	c := make(chan *dbus.Signal, 10)
+	conn.Signal(c)
+	fmt.Println(players[0].JSON())
+	for range c {
+		players[0].Refresh()
+		fmt.Println(players[0].JSON())
+	}
+	// fmt.Printf("%d: %s: %t\n", i, s.playerName, s.playing)
+	// for key, val := range s.metadata {
+	// 	fmt.Println(key, val)
+	// }
+
+	// fmt.Println(fd)
+	// node, err := introspect.Call(conn.Object("org.mpris.MediaPlayer2", "/org/mpris/MediaPlayer2"))
+	// if err != nil {
+	// 	panic(err)
+	// }
+	// data, _ := json.MarshalIndent(node, "", "    ")
+	// fmt.Println(data)
+
+}