#!/bin/bash

#install autohotspot from raspberrypiconnect.com
#http://www.raspberryconnect.com/network/item/331-raspberry-pi-auto-wifi-hotspot-switch-no-internet-routing
#km4ack 20190409
#km4ack 20190912


echo ""
echo "please use autohotspotN script instead of this one"
echo "download the correct script by running the command below"
echo "wget https://raw.githubusercontent.com/km4ack/pi-scripts/master/autohotspotN-setup"
exit 0

#update packages
apt-get update

#install hostapd, dnsmasq
apt-get install -y hostapd
apt-get install -y dnsmasq

#stop both services
systemctl disable hostapd
systemctl disable dnsmasq

mkdir -p $HOME/temp

wifipass () {
echo;echo;echo
echo "This password will be used to connect to the pi"
echo "when the pi is in hotspot mode"
read -p "Enter password to use with new hotspot " wifipasswd
echo;echo
echo "You entered $wifipasswd"
read -p "Is this correct? y/n " wifians
if [ $wifians == "y" ]
then
echo
else
wifipass
fi
}

wifipass

cd $HOME/temp

wget http://www.raspberryconnect.com/images/Autohotspot/autohotspot-95-4/hostapd.txt

#set new hotspot passwd
sed -i "s/wpa_passphrase=1234567890/wpa_passphrase=$wifipasswd/" $HOME/temp/hostapd.txt
#set country to US
sed -i 's/country_code=GB/country_code=US/' $HOME/temp/hostapd.txt

#move hostapd to correct location
mv $HOME/temp/hostapd.txt /etc/hostapd/hostapd.conf

sed -i s'/#DAEMON_CONF=""/DAEMON_CONF="\/etc\/hostapd\/hostapd.conf"/' /etc/default/hostapd
sed -i s'/DAEMON_OPTS=""/#DAEMON_OPTS=""/' /etc/default/hostapd

#add needed info to dnsmasq.conf
echo "#AutoHotspot config" >> /etc/dnsmasq.conf
echo "no-resolv" >> /etc/dnsmasq.conf
echo "interface=wlan0" >> /etc/dnsmasq.conf
echo "bind-interfaces" >> /etc/dnsmasq.conf
echo "dhcp-range=10.0.0.50,10.0.0.150,12h" >> /etc/dnsmasq.conf

mv /etc/network/interfaces /etc/network/interfaces.org

echo "source-directory /etc/network/interfaces.d" >> /etc/network/interfaces


echo "nohook wpa_supplicant" >> /etc/dhcpcd.conf

cd $HOME/temp

wget http://www.raspberryconnect.com/images/Autohotspot/autohotspot-95-4/autohotspot-service.txt

#create autohotspot service file
mv autohotspot-service.txt /etc/systemd/system/autohotspot.service

#start autohotspot service
systemctl enable autohotspot.service

#check if iw installed. install if not

iwcheck=$(dpkg --get-selections | grep -w "iw")
if [ -z "iw" ]
then
apt-get install iw
fi

#install autohotspot script
cd $HOME/temp
wget http://www.raspberryconnect.com/images/Autohotspot/autohotspot-95-4/autohotspot.txt
mv autohotspot.txt /usr/bin/autohotspot
chmod +x /usr/bin/autohotspot

#shackwifi function
shackwifi1 () {
#get ham's wifi credentials
echo "What wifi SSID would you like to connect to?"
echo "This is the one already in your shack"
read shackwifi
echo "What is the password for this wifi?"
read shackpass

echo;echo;
echo "Your shack's current wifi is"
echo "wifi $shackwifi"
echo "passwd $shackpass"
echo "Is this correct? y/n"
read shackans
if [ $shackans == "y" ]
then
echo
else
shackwifi1
fi
}

#run shackwifi function
shackwifi1

#add shack wifi to wpa_supplicant.conf
echo "network={" >> /etc/wpa_supplicant/wpa_supplicant.conf
echo "ssid=\"$shackwifi\"" >> /etc/wpa_supplicant/wpa_supplicant.conf
echo "psk=\"$shackpass\"" >> /etc/wpa_supplicant/wpa_supplicant.conf
echo "key_mgmt=WPA-PSK" >> /etc/wpa_supplicant/wpa_supplicant.conf
echo "}" >> /etc/wpa_supplicant/wpa_supplicant.conf

#remove hostapd masked error on first run of hotspot
systemctl unmask hostapd

echo;echo;echo
echo "A reboot is required to complete the setup"
read -p "Would you like to reboot now? y/n " rebot
if [ $rebot == "y" ]
then 
reboot
else
echo "Please remember to reboot soon"
fi

#need to setup cron job but can't do here b/c running as root