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package notify
import (
"fmt"
"os"
"os/exec"
"path/filepath"
"strconv"
"strings"
"syscall"
"github.com/godbus/dbus/v5"
)
const (
notifyDest = "org.freedesktop.Notifications"
notifyPath = "/org/freedesktop/Notifications"
notifyInterface = "org.freedesktop.Notifications"
maxSummaryLen = 29
maxBodyLen = 80
)
type Notification struct {
AppName string
Icon string
Summary string
Body string
FilePath string
Timeout int32
}
func Send(n Notification) error {
conn, err := dbus.SessionBus()
if err != nil {
return fmt.Errorf("dbus session failed: %w", err)
}
if n.AppName == "" {
n.AppName = "DMS"
}
if n.Timeout == 0 {
n.Timeout = 5000
}
if len(n.Summary) > maxSummaryLen {
n.Summary = n.Summary[:maxSummaryLen-3] + "..."
}
if len(n.Body) > maxBodyLen {
n.Body = n.Body[:maxBodyLen-3] + "..."
}
var actions []string
if n.FilePath != "" {
actions = []string{
"open", "Open",
"folder", "Open Folder",
}
}
hints := map[string]dbus.Variant{}
if n.FilePath != "" {
imgPath := n.FilePath
if !strings.HasPrefix(imgPath, "file://") {
imgPath = "file://" + imgPath
}
hints["image_path"] = dbus.MakeVariant(imgPath)
}
obj := conn.Object(notifyDest, notifyPath)
call := obj.Call(
notifyInterface+".Notify",
0,
n.AppName,
uint32(0),
n.Icon,
n.Summary,
n.Body,
actions,
hints,
n.Timeout,
)
if call.Err != nil {
return fmt.Errorf("notify call failed: %w", call.Err)
}
var notificationID uint32
if err := call.Store(¬ificationID); err != nil {
return fmt.Errorf("failed to get notification id: %w", err)
}
if len(actions) > 0 && n.FilePath != "" {
spawnActionListener(notificationID, n.FilePath)
}
return nil
}
func spawnActionListener(notificationID uint32, filePath string) {
exe, err := os.Executable()
if err != nil {
return
}
cmd := exec.Command(exe, "notify-action-generic", fmt.Sprintf("%d", notificationID), filePath)
cmd.SysProcAttr = &syscall.SysProcAttr{
Setsid: true,
}
cmd.Start()
}
func RunActionListener(args []string) {
if len(args) < 2 {
return
}
notificationID, err := strconv.ParseUint(args[0], 10, 32)
if err != nil {
return
}
filePath := args[1]
conn, err := dbus.SessionBus()
if err != nil {
return
}
if err := conn.AddMatchSignal(
dbus.WithMatchObjectPath(notifyPath),
dbus.WithMatchInterface(notifyInterface),
); err != nil {
return
}
signals := make(chan *dbus.Signal, 10)
conn.Signal(signals)
for sig := range signals {
switch sig.Name {
case notifyInterface + ".ActionInvoked":
if len(sig.Body) < 2 {
continue
}
id, ok := sig.Body[0].(uint32)
if !ok || id != uint32(notificationID) {
continue
}
action, ok := sig.Body[1].(string)
if !ok {
continue
}
handleAction(action, filePath)
return
case notifyInterface + ".NotificationClosed":
if len(sig.Body) < 1 {
continue
}
id, ok := sig.Body[0].(uint32)
if !ok || id != uint32(notificationID) {
continue
}
return
}
}
}
func handleAction(action, filePath string) {
switch action {
case "open", "default":
openPath(filePath)
case "folder":
openPath(filepath.Dir(filePath))
}
}
func openPath(path string) {
cmd := exec.Command("xdg-open", path)
cmd.SysProcAttr = &syscall.SysProcAttr{
Setsid: true,
}
cmd.Start()
}
|