#!/bin/bash
# exit if not enough arguments provided
if [ $# \< 6 ]
then
    echo -e "\033[1;31m[ERROR]\033[0m Not enough arguments"
    exit 1
fi
# exit if invalid Bluetooth address provided
if ! [ `echo "$1" | egrep "^([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$"` ]
then
    echo -e "\033[1;31m[ERROR]\033[0m Invalid Bluetooth address"
    exit 1
fi

# set user-specific config options, if arguments aren't "x"
sed -i "s/\[bluetooth address\]/$1/g" btpl.sh
echo -e "\033[1;32m[OK]\033[0m Bluetooth address set"
if [ "$2" != "x" ]
then
    sed -i "s/scanPeriod = 2.5/scanPeriod = $2/g" btpl.py
    echo -e "\033[1;32m[OK]\033[0m Scan period set"
else
    echo -e "\033[1;32m[OK]\033[0m Scan period left as default"
fi
if [ "$3" != "x" ]
then
    sed -i "s/leftRange = \"gnome-screensaver-command -l\"/leftRange = $3/g" btpl.py
    echo -e "\033[1;32m[OK]\033[0m Left range command set"
else
    echo -e "\033[1;32m[OK]\033[0m Left range command left as default"
fi
if [ "$4" != "x" ]
then
    sed -i "s/enteredRange = \"gnome-screensaver-command -d\"/enteredRange = $4/g" btpl.py
    echo -e "\033[1;32m[OK]\033[0m Entered range command set"
else
    echo -e "\033[1;32m[OK]\033[0m Entered range command left as default"
fi
if [ "$5" != "x" ]
then
    sed -i "s/maxMissed = 3/maxMissed = $5/g" btpl.py
    echo -e "\033[1;32m[OK]\033[0m Maximum missed set"
else
    echo -e "\033[1;32m[OK]\033[0m Maximum missed left as default"
fi
if [ "$6" != "x" ]
then
    sed -i "s/rangeLimit = 7/rangeLimit = $6/g" btpl.py
    echo -e "\033[1;32m[OK]\033[0m Range limit set"
else
    echo -e "\033[1;32m[OK]\033[0m Range limit left as default"
fi

# set permissions for files that need to be executable
chmod +x btpl.sh reconfigure
# reorganise files
mkdir ~/.bluetooth-proximity-locking > /dev/null 2>&1
mkdir bin > /dev/null 2>&1
mv btpl.sh bin/btpl > /dev/null 2>&1
# add command 'btpl' to PATH
if ! grep -Fq 'export PATH=$PATH":$HOME/.bluetooth-proximity-locking/bin"' ~/.profile
then
    echo 'export PATH=$PATH":$HOME/.bluetooth-proximity-locking/bin"' >> ~/.profile
    echo -e "\033[1;32m[OK]\033[0m Command 'btpl' added to PATH successfully"
fi
# move files to a hidden folder in the user's home folder
mv * ~/.bluetooth-proximity-locking/ > /dev/null 2>&1
echo -e "\033[1;32m[OK]\033[0m Files reorganised successfully"
# refresh PATH
source ~/.profile
echo -e "\033[1;32m[OK]\033[0m PATH refreshed successfully"

# display final success message
echo -e "\033[1;32m[OK]\033[0m Bluetooth Proximity Locking configured successfully"