#!/usr/bin/env bash

## Files and Directories
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
SFILE="$DIR/system.ini"
RFILE="$DIR/.system"
STYLE="default"

## Get system variable values for various modules
get_values() {
	CARD=$(light -L | grep 'backlight' | head -n1 | cut -d'/' -f3)
	BATTERY=$(upower -i `upower -e | grep 'BAT'` | grep 'native-path' | cut -d':' -f2 | tr -d '[:blank:]')
	ADAPTER=$(upower -i `upower -e | grep 'AC'` | grep 'native-path' | cut -d':' -f2 | tr -d '[:blank:]')
	INTERFACE=$(ip link | awk '/state UP/ {print $2}' | tr -d :)
}

## Write values to `system.ini` file
set_values() {
	if [[ "$ADAPTER" ]]; then
		sed -i -e "s/sys_adapter = .*/sys_adapter = $ADAPTER/g" 						${SFILE}
	fi
	if [[ "$BATTERY" ]]; then
		sed -i -e "s/sys_battery = .*/sys_battery = $BATTERY/g" 						${SFILE}
	fi
	if [[ "$CARD" ]]; then
		sed -i -e "s/sys_graphics_card = .*/sys_graphics_card = $CARD/g" 				${SFILE}
	fi
	if [[ "$INTERFACE" ]]; then
		sed -i -e "s/sys_network_interface = .*/sys_network_interface = $INTERFACE/g" 	${SFILE}
	fi
}

## Launch Polybar with selected style
launch_bar() {
	bash "$HOME"/.config/bspwm/themes/"$STYLE"/polybar/launch.sh
}

# Execute functions
if [[ ! -f "$RFILE" ]]; then
	get_values
	set_values
	touch ${RFILE}
fi
launch_bar
