92 lines
1.5 KiB
Go
92 lines
1.5 KiB
Go
package main
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import (
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"bufio"
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"context"
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"log"
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"os"
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"os/exec"
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"os/signal"
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"strings"
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"sync"
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"syscall"
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"time"
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)
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func main() {
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ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
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defer stop()
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cmd := exec.CommandContext(ctx, "dbus-monitor", "--session", "type='signal',interface='org.gnome.ScreenSaver'")
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cmdReader, err := cmd.StdoutPipe()
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if err != nil {
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log.Fatalln("cmd.StdoutPipe:", err)
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}
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defer func() {
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_ = cmdReader.Close()
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}()
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cmd.Stderr = os.Stderr
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var wg sync.WaitGroup
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wg.Add(1)
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go func() {
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defer wg.Done()
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_ = cmd.Run()
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}()
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screenSaverCh := make(chan bool, 1)
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defer close(screenSaverCh)
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wg.Add(1)
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go func() {
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defer wg.Done()
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scanner := bufio.NewScanner(cmdReader)
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for scanner.Scan() {
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select {
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case <-ctx.Done():
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return
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default:
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if !strings.Contains(scanner.Text(), "member=ActiveChanged") {
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continue
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}
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if !scanner.Scan() {
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continue
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}
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screenSaverCh <- strings.Contains(scanner.Text(), "boolean true")
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}
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}
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}()
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wg.Add(1)
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go func() {
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defer wg.Done()
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isScreenSaverActive := false
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ticker := time.NewTicker(30 * time.Minute)
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defer ticker.Stop()
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for {
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select {
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case <-ctx.Done():
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return
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case b := <-screenSaverCh:
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isScreenSaverActive = b
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case <-ticker.C:
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if isScreenSaverActive {
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continue
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}
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_ = sendNotification(ctx)
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}
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}
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}()
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wg.Wait()
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log.Println("DONE")
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}
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func sendNotification(ctx context.Context) error {
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return exec.CommandContext(ctx, "notify-send", "title", "description").Run()
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}
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