From 60610dc81dcb1515eb8295aeed2c23344eff71d3 Mon Sep 17 00:00:00 2001
From: ION606 <ion606@protonmail.com>
Date: Fri, 15 Aug 2025 21:46:59 +0000
Subject: [PATCH] added battery stuff

---
 i3/battery_status.sh         | 140 +++++++++++++++++++++++++++++++++++
 i3/toggle_battery_display.sh |  12 +++
 2 files changed, 152 insertions(+)
 create mode 100644 i3/battery_status.sh
 create mode 100644 i3/toggle_battery_display.sh

diff --git a/i3/battery_status.sh b/i3/battery_status.sh
new file mode 100644
index 0000000..f5c4113
--- /dev/null
+++ b/i3/battery_status.sh
@@ -0,0 +1,140 @@
+#!/usr/bin/env bash
+# prints a battery icon + either percentage or time remaining
+# depends (optional): upower or acpi; otherwise falls back to /sys
+
+# config: icons from nerd fonts / font awesome
+icon_empty="";   # very low
+icon_low="";     # low
+icon_mid="";     # medium
+icon_high="";    # high
+icon_full="";    # full
+icon_charge="";  # charging bolt
+icon_plug="";    # plugged/full
+icon_alert="";   # critical
+
+# config: low/critical thresholds
+low_threshold=20;
+crit_threshold=10;
+
+state_file="${XDG_CACHE_HOME:-$HOME/.cache}/polybar_battery_mode";
+mode="percent";
+if [[ -f "$state_file" ]]; then
+  mode="$(cat "$state_file" 2>/dev/null | tr -d '\n' )";
+fi
+
+bat_path="$(ls -d /sys/class/power_supply/BAT* 2>/dev/null | head -n1)";
+if [[ -z "$bat_path" ]]; then
+  echo "${icon_alert} no battery";
+  exit 0;
+fi
+
+# helpers
+pick_icon() {
+  local pct="$1";
+  local status="$2";
+  local base;
+  if   (( pct == 100 )); then base="^~^"
+  elif (( pct >= 95 )); then base="$icon_full";
+  elif (( pct >= 75 )); then base="$icon_high";
+  elif (( pct >= 50 )); then base="$icon_mid";
+  elif (( pct >= 25 )); then base="$icon_low";
+  else                     base="$icon_empty";
+  fi
+  
+  # overlay/override for charging or full on ac power
+  if [[ "$status" == "Charging" ]]; then
+    echo "$icon_charge $base";
+  elif [[ "$status" == "Full" || "$status" == "Not charging" ]]; then
+    echo "$icon_plug $base";
+  else
+    echo "$base";
+  fi
+}
+
+fmt_time() {
+  # normalize various formats (e.g., "1.5 hours", "02:41:13")
+  local raw="$1";
+  if [[ "$raw" =~ ^[0-9]+:[0-9]{2}:[0-9]{2}$ ]]; then
+    # hh:mm:ss -> XhYm
+    IFS=':' read -r h m s <<<"$raw";
+    printf "%sh%sm" "$h" "$m";
+  elif [[ "$raw" =~ ^([0-9]+(\.[0-9]+)?)\ hours?$ ]]; then
+    # upower: "1.4 hours"
+    local hours="${raw% hours}";
+    hours="${hours% hour}";
+    # convert decimal hours to h m
+    local total_min;
+    total_min="$(python - <<'PY'
+import math,sys
+h=float(sys.stdin.read().strip())
+m=round((h-int(h))*60)
+print(f"{int(h)}h{m}m")
+PY
+<<<"$hours")";
+    printf "%s" "$total_min";
+  else
+    printf "%s" "$raw";
+  fi
+}
+
+percentage="";
+status="";
+eta="";   # time to empty or to full
+
+# try upower first (dbus-based, used by many desktops)
+if command -v upower >/dev/null 2>&1; then
+  dev="$(upower -e | grep -m1 BAT)";
+
+  if [[ -n "$dev" ]]; then
+    info="$(upower -i "$dev" 2>/dev/null)";
+    status="$(awk -F': *' '/^\s*state:/{print $2}' <<<"$info")";
+    percentage="$(awk -F': *' '/^\s*percentage:/{print $2}' <<<"$info" | tr -d '% ')";
+
+    if [[ "$status" == "charging" ]]; then
+      eta="$(awk -F': *' '/time to full/{print $2}' <<<"$info")";
+    elif [[ "$status" == "discharging" ]]; then
+      eta="$(awk -F': *' '/time to empty/{print $2}' <<<"$info")";
+    fi
+
+    # normalize capitalization
+    status="$(tr '[:lower:]' '[:upper:]' <<<"${status:0:1}")${status:1}";
+  fi
+fi
+
+# fallback: acpi (reads /sys or /proc and calculates eta)
+if [[ -z "$percentage" || -z "$status" ]] && command -v acpi >/dev/null 2>&1; then
+  line="$(acpi -b 2>/dev/null | head -n1)";
+  # examples: "Battery 0: Discharging, 93%, 02:41:13 remaining"
+  #           "Battery 0: Charging, 80%, 00:20:00 until charged"
+  status="$(awk -F', *' -v OFS=',' '{split($1,a,": "); print a[2]}' <<<"$line")";
+  percentage="$(awk -F', *' '{gsub("%","",$2); print $2}' <<<"$line")";
+  eta="$(awk -F', *' '{print $3}' <<<"$line" | sed -E 's/(remaining|until charged)//g' | xargs)";
+fi
+
+# final fallback: sysfs (percentage + status only)
+if [[ -z "$percentage" || -z "$status" ]]; then
+  if [[ -r "$bat_path/capacity" && -r "$bat_path/status" ]]; then
+    percentage="$(cat "$bat_path/capacity" 2>/dev/null)";
+    status="$(cat "$bat_path/status" 2>/dev/null)";
+  fi
+fi
+
+# guard rails
+if [[ -z "$percentage" ]]; then
+  echo "${icon_alert} n/a";
+  exit 0;
+fi
+
+icon="$(pick_icon "$percentage" "$status")";
+
+# add critical marker if really low and discharging
+if (( percentage <= crit_threshold )) && [[ "$status" == "Discharging" ]]; then
+  icon="${icon_alert} ${icon}";
+fi
+
+# output based on mode
+if [[ "$mode" == "time" && -n "$eta" ]]; then
+  echo "${icon} $(fmt_time "$eta")";
+else
+  echo "${icon} ${percentage}%";
+fi
diff --git a/i3/toggle_battery_display.sh b/i3/toggle_battery_display.sh
new file mode 100644
index 0000000..59dfe57
--- /dev/null
+++ b/i3/toggle_battery_display.sh
@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+# toggles display mode (percent <-> time) for the battery module
+state_file="${XDG_CACHE_HOME:-$HOME/.cache}/polybar_battery_mode";
+current="percent";
+if [[ -f "$state_file" ]]; then
+  current="$(cat "$state_file" 2>/dev/null | tr -d '\n')";
+fi
+if [[ "$current" == "percent" ]]; then
+  echo "time" > "$state_file";
+else
+  echo "percent" > "$state_file";
+fi