notify.go RawHistoryFolder

1package launcher
2
3import (
4	"context"
5	"os/exec"
6	"time"
7
8	"github.com/bnema/zerowrap"
9)
10
11// Notifier shows desktop notifications with notify-send, so any
12// notification daemon of the session (mako, dunst…) displays them.
13type Notifier struct {
14	ctx context.Context
15	env []string
16	log zerowrap.Logger
17}
18
19// NewNotifier runs notify-send with the child environment, which carries
20// the session bus address. Ending ctx kills running notify-send processes.
21func NewNotifier(ctx context.Context, env []string, log zerowrap.Logger) *Notifier {
22	return &Notifier{ctx: ctx, env: append([]string(nil), env...), log: log}
23}
24
25// Notify starts notify-send and returns; it is killed after five seconds.
26// A missing tool or daemon only logs a warning.
27func (n *Notifier) Notify(summary, body string) {
28	path, err := childLookPath("notify-send", n.env)
29	if err != nil {
30		n.log.Warn().Err(err).Str("summary", summary).Msg("notification skipped: notify-send not found")
31		return
32	}
33	go func() {
34		ctx, cancel := context.WithTimeout(n.ctx, 5*time.Second)
35		defer cancel()
36		cmd := exec.CommandContext(ctx, path, "--app-name=neferwl", "--", summary, body)
37		cmd.Env = n.env
38		if out, err := cmd.CombinedOutput(); err != nil && n.ctx.Err() == nil {
39			n.log.Warn().Err(err).Str("output", string(out)).Str("summary", summary).Msg("notification failed")
40		}
41	}()
42}