49 lines
952 B
Go
49 lines
952 B
Go
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package main
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import (
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"flag"
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"log"
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"os"
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"os/exec"
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"strconv"
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"strings"
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"time"
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)
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func notify(msg string) {
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cmd := exec.Command("notify-send", "-t", "5000", "bat-alert", msg)
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err := cmd.Run()
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if err != nil {
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log.Println(err)
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}
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}
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var targetFlag = flag.Int("target", 15, "when to send the alert")
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func main() {
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flag.Parse()
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sent := false
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for {
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capacity, err := os.ReadFile("/sys/class/power_supply/BAT0/capacity")
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if err != nil {
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notify("error: " + err.Error())
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}
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numCap, err := strconv.Atoi(strings.Trim(string(capacity), "\n"))
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if err != nil {
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notify("error: " + err.Error())
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}
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if numCap < 15 {
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if !sent {
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sent = true
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notify("battery running low!")
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}
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} else {
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sent = false
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}
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time.Sleep(time.Second * 10)
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}
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}
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