#!/usr/bin/bash

#	protect existing connection
if [ -f /tmp/wpa.conf ]; then
	read -p "delete existing temp config? (y/N) " choice
	case "$choice" in
		y|Y ) rm /tmp/wpa.conf;;
		* ) exit 1;;
	esac
fi

#	get passphrase if not provided by $2
if [[ "$2" -eq "NONE" ]]; then
	PSK=""
elif [[ "$2" -ne "" ]]; then
	PSK="$2"
else
	read -p "enter passphrase: " PSK
fi

#	make tmp config
echo -e "#	temp configuration file for wpa_supplicant\nctrl_interface=/run/wpa_supplicant\nctrl_interface_group=wheel\neapol_version=1\nap_scan=1\nfast_reauth=1\nupdate_config=1\n" > /tmp/wpa.conf
if [[ "$PSK" -ne "" ]]; then
	wpa_passphrase "$1" "$PSK" >> /tmp/wpa.conf
else
	echo -e "network={\n\tssid=\"$1\"\n\tkey_mgmt=NONE\n}" >> /tmp/wpa.conf
fi

#	protect existing wpa_supplicant
if [ -f /run/wpa_supplicant/wlp3s0 ]; then
	read -p "stop existing wpa_supplicant? (y/N) " choice
	case "$choice" in
		y|Y ) sudo sv stop wpa_supplicant;;
		* ) rm /tmp/wpa.conf; exit 1;;
	esac
fi
sudo wpa_supplicant -B -i wlp3s0 -c /tmp/wpa.conf