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ION606
142 lines
4.1 KiB
Bash
142 lines
4.1 KiB
Bash
#!/usr/bin/env bash
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# prints a battery icon + either percentage or time remaining
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# depends (optional): upower or acpi; otherwise falls back to /sys
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# config: icons from nerd fonts / font awesome
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icon_empty=""; # very low
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icon_low=""; # low
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icon_mid=""; # medium
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icon_high=""; # high
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icon_full=""; # full
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icon_charge=""; # charging bolt
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icon_plug=""; # plugged/full
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icon_alert=""; # critical
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# config: low/critical thresholds
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low_threshold=20;
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crit_threshold=10;
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state_file="${XDG_CACHE_HOME:-$HOME/.cache}/polybar_battery_mode";
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mode="percent";
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if [[ -f "$state_file" ]]; then
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mode="$(cat "$state_file" 2>/dev/null | tr -d '\n' )";
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fi
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bat_path="$(ls -d /sys/class/power_supply/BAT* 2>/dev/null | head -n1)";
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if [[ -z "$bat_path" ]]; then
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echo "${icon_alert} no battery";
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exit 0;
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fi
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# helpers
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pick_icon() {
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local pct="$1";
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local status="$2";
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local base;
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if (( pct == 100 )); then base="^~^"
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elif (( pct >= 95 )); then base="$icon_full";
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elif (( pct >= 75 )); then base="$icon_high";
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elif (( pct >= 50 )); then base="$icon_mid";
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elif (( pct >= 25 )); then base="$icon_low";
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else base="$icon_empty";
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fi
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# overlay/override for charging or full on ac power
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if [[ "$status" == "Charging" ]]; then
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echo "$icon_charge $base";
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elif [[ "$status" == "Full" || "$status" == "Not charging" ]]; then
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echo "$icon_plug $base";
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else
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echo "$base";
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fi
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}
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fmt_time() {
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# normalize various formats (e.g., "1.5 hours", "02:41:13")
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local raw="$1";
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if [[ "$raw" =~ ^[0-9]+:[0-9]{2}:[0-9]{2}$ ]]; then
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# hh:mm:ss -> XhYm
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IFS=':' read -r h m s <<<"$raw";
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printf "%sh%sm" "$h" "$m";
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elif [[ "$raw" =~ ^([0-9]+(\.[0-9]+)?)\ hours?$ ]]; then
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# upower: "1.4 hours"
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local hours="${raw% hours}";
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hours="${hours% hour}";
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# convert decimal hours to h m
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local total_min;
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total_min="$(python - <<'PY' "$hours"
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import math,sys
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arg = sys.argv[1] if len(sys.argv) > 1 else "0"
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h = float(arg)
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m = round((h - int(h)) * 60)
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print(f"{int(h)}h{m}m")
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PY
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)";
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printf "%s" "$total_min";
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else
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printf "%s" "$raw";
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fi
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}
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percentage="";
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status="";
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eta=""; # time to empty or to full
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# try upower first (dbus-based, used by many desktops)
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if command -v upower >/dev/null 2>&1; then
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dev="$(upower -e | grep -m1 BAT)";
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if [[ -n "$dev" ]]; then
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info="$(upower -i "$dev" 2>/dev/null)";
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status="$(awk -F': *' '/^\s*state:/{print $2}' <<<"$info")";
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percentage="$(awk -F': *' '/^\s*percentage:/{print $2}' <<<"$info" | tr -d '% ')";
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if [[ "$status" == "charging" ]]; then
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eta="$(awk -F': *' '/time to full/{print $2}' <<<"$info")";
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elif [[ "$status" == "discharging" ]]; then
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eta="$(awk -F': *' '/time to empty/{print $2}' <<<"$info")";
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fi
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# normalize capitalization
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status="$(tr '[:lower:]' '[:upper:]' <<<"${status:0:1}")${status:1}";
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fi
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fi
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# fallback: acpi (reads /sys or /proc and calculates eta)
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if [[ -z "$percentage" || -z "$status" ]] && command -v acpi >/dev/null 2>&1; then
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line="$(acpi -b 2>/dev/null | head -n1)";
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# examples: "Battery 0: Discharging, 93%, 02:41:13 remaining"
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# "Battery 0: Charging, 80%, 00:20:00 until charged"
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status="$(awk -F', *' -v OFS=',' '{split($1,a,": "); print a[2]}' <<<"$line")";
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percentage="$(awk -F', *' '{gsub("%","",$2); print $2}' <<<"$line")";
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eta="$(awk -F', *' '{print $3}' <<<"$line" | sed -E 's/(remaining|until charged)//g' | xargs)";
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fi
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# final fallback: sysfs (percentage + status only)
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if [[ -z "$percentage" || -z "$status" ]]; then
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if [[ -r "$bat_path/capacity" && -r "$bat_path/status" ]]; then
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percentage="$(cat "$bat_path/capacity" 2>/dev/null)";
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status="$(cat "$bat_path/status" 2>/dev/null)";
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fi
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fi
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# guard rails
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if [[ -z "$percentage" ]]; then
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echo "${icon_alert} n/a";
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exit 0;
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fi
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icon="$(pick_icon "$percentage" "$status")";
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# add critical marker if really low and discharging
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if (( percentage <= crit_threshold )) && [[ "$status" == "Discharging" ]]; then
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icon="${icon_alert} ${icon}";
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fi
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# output based on mode
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if [[ "$mode" == "time" && -n "$eta" ]]; then
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echo "${icon} $(fmt_time "$eta")";
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else
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echo "${icon} ${percentage}%";
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fi
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