SwiftBar plugin to show Apple "Magic" peripheral battery levels

magic.15m.sh

#!/bin/zsh
tmp=$(ioreg -c 'AppleDeviceManagementHIDEventService' | grep 'BatteryPercent\|\"Magic' | sed -e 's/[ |]*//' -e 's/\"//g' -e 's/\Product = //' -e 's/BatteryPercent //' | paste -d\  - - | sed 's/Magic \(.\).* = /\1/')
arr=(${(f)tmp})
count=1
for d in "${arr[@]}"; do
  # Extract type and percentage
  type="${d[1,1]}"
  pct="${d[2,3]}"

  # Define base symbol based on type
  if [ "$type" = "M" ]; then
    symbol="magicmouse"
  fi
  if [ "$type" = "T" ]; then
    symbol="rectangle"
  fi
  if [ "$type" = "K" ]; then
    symbol="keyboard"
  fi

  # Define warning state based on percentage
  state="OK"
  if [[ $pct -lt 30 ]]; then
    state="WARN"
  fi
  if [[ $pct -lt 10 ]]; then
    state="DANGER"
  fi

  # Use filled symbol if WARN or DANGER
  if [ "$state" != "OK" ]; then
    symbol="${symbol}.fill"
  fi

  # Wrap the symbol for SwiftBar
  symbol=":${symbol}:"

  # Define the symbol colour
  if [ "$state" = "OK" ]; then
    sfcol="sfcolor${count}=#aaaaaa"
  fi
  if [ "$state" = "WARN" ]; then
    sfcol="sfcolor${count}=#ff8800"
  fi
  if [ "$state" = "DANGER" ]; then
    sfcol="sfcolor${count}=#ff0000"
  fi

  # Append the symbol and percentage to the output
  if [[ $count -eq 1 ]]; then
    data="${symbol}${pct}"
  else
    data="${data} ${symbol}${pct}"
  fi

  # Append the symbol colour to the parameters
  if [[ $count -eq 1 ]]; then
    parm="${sfcol}"
  else
    parm="${parm} ${sfcol}"
  fi
  ((count++))
done

# Prepend standard parameters
parm="color=#ffffff sfsize=14 ${parm}"

# Echo the full output
echo "${data} | ${parm}"