#!/bin/bash

# Definitions
threshold_config=/sys/class/power_supply/BAT1/charge_control_end_threshold
print_help() {
    echo "Usage: ${0} (get|set) [level]"
    echo
    echo "  get  Gets the current battery charging limit"
    echo "  set  Sets the current battery charging limit to the provided level"
    echo
    echo "Please note that this script is made for Samsung Galaxy Book Computers and only works with Galaxy Book Extras module loaded and enabled."
    exit 1
}

# Check if file is present
if ! ([ -e $threshold_config ]); then
    echo "Couldn't find '${threshold_config}': No such file or directory"
    echo "Please ensure the concerned module is loaded correctly"
    exit 1
fi

# Check parameters
# get
if [ $# -eq 1 ] && [[ $1 == "get" ]]; then
    cat $threshold_config

# set (check level option)
elif [ $# -eq 2 ] && [[ $1 == "set" ]] && [ $2 -le 99 ] && [ $2 -ge 0 ]; then
    echo $2 | sudo tee $threshold_config
    if [ $? == 0 ]; then
        echo "Done"
        exit 0
    else
        exit 1
    fi

else
    print_help
fi