33 lines
943 B
Plaintext
Executable File
33 lines
943 B
Plaintext
Executable File
#!/usr/bin/env nix-shell
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#!nix-shell -i bash
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full=$(cat /sys/class/power_supply/axp20x-battery/charge_full_design)
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rate=$(cat /sys/class/power_supply/axp20x-battery/current_now)
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perc=$(cat /sys/class/power_supply/axp20x-battery/capacity)
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perc_left=$((100 - $perc))
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# these icons come from sxmo; they only render in nerdfonts
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bat_dis=""
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bat_chg=""
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fmt_minutes() {
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# args: <battery symbol> <text if ludicrous estimate> <estimated minutes to full/empty>
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if [[ $3 -gt 1440 ]]; then
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printf "%s %s" "$1" "$2" # more than 1d
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else
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hr=$(($3 / 60))
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hr_in_min=$(($hr * 60))
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min=$(($3 - $hr_in_min))
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printf "%s %dh%02dm" "$1" "$hr" "$min"
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fi
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}
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if [[ $rate -lt 0 ]]; then
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# discharging
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fmt_minutes "$bat_dis" '∞' "$(($full * 60 * $perc / (-100 * $rate)))"
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elif [[ $rate -gt 0 ]]; then
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# charging
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fmt_minutes "$bat_chg" '100%' "$(($full * 60 * $perc_left / (100 * $rate)))"
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else
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echo "$bat_dis $perc%"
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fi
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