69 lines
2.0 KiB
Bash
69 lines
2.0 KiB
Bash
#!/usr/bin/env bash
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#
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# Read battery status in Linux
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set -euo pipefail
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IFS=$'\n\t'
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DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
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batteries=$(upower --enumerate | grep BAT)
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function generate_battery_update {
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local battery_path=$1
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local battery_status=$(upower --show-info "$battery_path")
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local battery_state=$(grep 'state:' <<<"$battery_status" | awk '{print $2}')
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local battery_percentage=$(grep 'percentage:' <<<"$battery_status" | awk '{print $2}')
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battery_percentage=${battery_percentage%\%}
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local time_remaining=$(grep 'time to empty:' <<<"$battery_status" | sed 's/\W*time to empty:\W*//g')
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local tooltip="$time_remaining until empty"
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if [ -z "$time_remaining" ]; then
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time_remaining=$(grep 'time to full:' <<<"$battery_status" | sed 's/\W*time to full:\W*//g')
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tooltip="$time_remaining until full"
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fi
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local battery_icon=""
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local class=""
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if [ $battery_state = "charging" ]; then
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if [ $battery_percentage -eq 100 ]; then
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battery_icon=""
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else
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battery_icon=""
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fi
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elif [ $battery_percentage -le 20 ]; then
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battery_icon=""
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elif [ $battery_percentage -le 40 ]; then
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battery_icon=""
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elif [ $battery_percentage -le 60 ]; then
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battery_icon=""
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elif [ $battery_percentage -le 80 ]; then
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battery_icon=""
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elif [ $battery_percentage -lt 100 ]; then
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battery_icon=""
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else
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battery_icon=""
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fi
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if [ $battery_percentage -le 15 ]; then
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class="critical"
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elif [ $battery_percentage -le 30 ]; then
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class="warning"
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fi
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jq --unbuffered --compact-output <<EOF
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{
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"text":"${battery_percentage}% ${battery_icon}",
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"tooltip":"$tooltip",
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"percentage":${battery_percentage},
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"class":"${class}"
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}
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EOF
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}
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while read bat; do
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generate_battery_update "$bat"
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done<<<"$batteries"
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upower --monitor | grep --line-buffered 'device changed:' | while read l; do
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while read bat; do
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generate_battery_update "$bat"
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done<<<"$batteries"
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done
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