#!/bin/bash
if [[ $EUID -ne 0 ]]; then
    echo "This script must be run as root."
    exit 1
fi
echo "Which wireless interface do you wish to configure?"
interfaces=($(ls /sys/class/net | egrep -v 'lo|eth|enp|veth|ppp|tun'))
for (( i = 0; i < ${iLen=${#interfaces[@]}}; i++ )); do echo "($i) ${interfaces[$i]}"; done
echo -en "\nType number and hit [ENTER]: "
read inChoice
clear
if [[ ! " ${interfaces[$inChoice]} " =~ " ${value} " ]]; then
    pkill wpa_supplicant
    ifconfig "${interfaces[$inChoice]}" down
    sleep 1
    sudo ifconfig "${interfaces[$inChoice]}" up
    clear
    echo -e "\nScanning for nearby networks with ${interfaces[$inChoice]}..."
    networks=($(sudo iw dev "${interfaces[$inChoice]}" scan | grep 'SSID' | awk '{print $2}'))
    for (( i = 0; i < ${nLen=${#networks[@]}}; i++ )); do echo "($i) ${networks[$i]}"; done
    echo -en "\nType number and hit [ENTER]: "
    read netChoice
    clear
    if [[ ! " ${networks[$netChoice]} " =~ " ${value} " ]]; then
        if [ -e "${networks[$netChoice]}.conf" ]; then
            echo "Connecting with previous config..."
            sleep 1
        else
            echo -en "\nType the PSK for ${networks[$netChoice]} and hit [ENTER]: "
            read psk
            echo -e "\n\nGenerating WPA config file (${networks[$netChoice]})..."
            wpa_passphrase "${networks[$netChoice]}" "$psk" > "${networks[$netChoice]}.conf"
        fi
        pkill wpa_supplicant
        wpa_supplicant -B -i "${interfaces[$inChoice]}" -c "${networks[$netChoice]}.conf"
        clear
        echo -e "Getting IP, however you can CTRL+C to cancel and still be connected.\n"
        echo "IP: $(curl -s --retry 999 --retry-max-time 0 ipinfo.io/ip)"
    fi
fi