dotfiles/home/.config/eww/scripts/battery

#!/bin/bash

# shellcheck source=include
source "./scripts/include"

# $BATTERY and $ADAPTER env vars can be set manually, being the names of the
# devices (in /sys/class/power_supply/) i.e. BATTERY=BAT0 ADAPTER=ADP0
# or, if left unset, they will be automatically picked.

CAPACITY_ICONS=("󰁺" "󰁻" "󰁼" "󰁽" "󰁾" "󰁿" "󰂀" "󰂁" "󰂂" "󰁹")
CHARGING_ICON=""
DISCHARGING_ICON=""
FULL_ICON="" # Plugged in, but no longer charging (fully charged)
CRITICAL_ICON=""
CRITICAL_PERCENTAGE=15

if [ -z "$BATTERY" ]; then
  # shellcheck disable=SC2010
  BATTERY="$(\ls -t /sys/class/power_supply | grep "BAT" | head -n 1)"
fi

if [ -z "$ADAPTER" ]; then
  # shellcheck disable=SC2010
  ADAPTER="$(\ls -t /sys/class/power_supply | grep -E "ADP|AC" | head -n 1)"
fi

get_bat_info() {
  cat /sys/class/power_supply/"$BATTERY"/"$1"
}

get_adp_info() {
  cat /sys/class/power_supply/"$ADAPTER"/"$1"
}

manufacturer="$(get_bat_info manufacturer)"
model_name="$(get_bat_info model_name)"
technology="$(get_bat_info technology)"
energy_now="$(get_bat_info energy_now)"
energy_full="$(get_bat_info energy_full)"
energy_full_design="$(get_bat_info energy_full_design)"
cycle_count="$(get_bat_info cycle_count)"

capacity="$(get_bat_info capacity)"
status="$(get_bat_info status)"
[ "$(get_adp_info online)" -eq 1 ] && adp_connected="true" || adp_connected="false"

# Quick overrides to showcase how battery works
# capacity=100
# adp_connected="true"
# status="Charging"
# status="Not charging"
# status="Discharging"

full="false"
capacity_icon="$(pick_icon "$capacity" 0 100 "${CAPACITY_ICONS[@]}")"

if [ "$status" = "Not charging" ] || [ "$status" = "Full" ] && [ "$adp_connected" = "true" ]; then
  extra_icon="$FULL_ICON"
  full="true"
elif [ "$status" = "Discharging" ] && [ "$capacity" -le "$CRITICAL_PERCENTAGE" ]; then
  extra_icon="$CRITICAL_ICON"
elif [ "$status" = "Discharging" ]; then
  extra_icon="$DISCHARGING_ICON"
elif [ "$status" = "Charging" ]; then
  extra_icon="$CHARGING_ICON"
fi

[ "$capacity" -le "$CRITICAL_PERCENTAGE" ] && critical="true" || critical="false"

jq -n -c --monochrome-output \
  --arg percent "$capacity" \
  --arg plugged "$adp_connected" \
  --arg status "$status" \
  --arg capacity_icon "$capacity_icon" \
  --arg extra_icon "$extra_icon" \
  --arg manufacturer "$manufacturer" \
  --arg model_name "$model_name" \
  --arg technology "$technology" \
  --arg energy_now "$energy_now" \
  --arg energy_full "$energy_full" \
  --arg energy_full_design "$energy_full_design" \
  --arg cycle_count "$cycle_count" \
  --arg critical "$critical" \
  --arg full "$full" \
  '$ARGS.named'