#!/bin/sh

apt update && apt upgrade -y
apt install bridge-utils dnsmasq hostapd ifupdown iptables libqmi-utils resolvconf samba udhcpc udiskie udisks2 -y
apt purge dhcpcd modemmanager -y

sed -i -e '/^\[HotPi SMB]$/,+3d' /etc/samba/smb.conf -e '/^usb_max_current_enable=1$/d' /boot/firmware/config.txt

echo '#!/bin/sh
qmicli -d /dev/cdc-wdm0 --wds-noop --client-cid=17 2> /dev/null
qmicli -d /dev/cdc-wdm0 -E raw-ip
qmicli -d /dev/cdc-wdm0 --wds-start-network=ip-type=4 --client-no-release-cid
udhcpc -i wwan0' > /bin/hotpistart

echo '#!/bin/sh
ifconfig wwan0 down
qmicli -d /dev/cdc-wdm0 --wds-noop --client-cid=17 2> /dev/null' > /bin/hotpistop

echo '#!/bin/sh
udisksctl mount -b /dev/sda1' > /bin/hotpimount

echo '#!/bin/sh
udisksctl unmount -b /dev/sda1' > /bin/hotpiunmount

echo '#!/bin/sh
chmod -R 755 /media/root' > /bin/hotpiread

echo '#!/bin/sh
chmod -R 777 /media/root' > /bin/hotpiwrite

echo '#!/bin/sh
apt update && apt upgrade -y' > /bin/hotpiupdate

echo 'allow-hotplug br0
iface br0 inet static
address 192.168.0.1
bridge_ports wlan0 eth0' > /etc/network/interfaces.d/hotpi.conf

echo 'interface=br0
dhcp-range=192.168.0.2,192.168.0.254,24h' > /etc/dnsmasq.d/hotpi.conf

echo 'net.ipv4.ip_forward=1' > /etc/sysctl.d/hotpi.conf

echo 'bridge=br0
channel=1
country_code=US
hw_mode=g
ieee80211n=1
interface=wlan0
rsn_pairwise=CCMP
ssid=raspberrypi
wmm_enabled=1
wpa=2
wpa_key_mgmt=WPA-PSK
wpa_passphrase=password' > /etc/hostapd/hostapd.conf

echo '[HotPi SMB]
path = /media/root
public = yes
writeable = yes' >> /etc/samba/smb.conf

echo 'usb_max_current_enable=1' >> /boot/firmware/config.txt

echo 'ATTR{idVendor}=="1e0e", ATTR{idProduct}=="9001", RUN="/bin/systemd-run hotpistart"' > /etc/udev/rules.d/hotpi.rules

echo '[Service]
ExecStart=sh -c "iptables -t nat -A POSTROUTING -o wwan0 -j MASQUERADE ; udiskie -N -F"
[Install]
WantedBy=multi-user.target' > /etc/systemd/system/hotpi.service

mkdir -p /media/root
chmod 755 /bin/hotpi* /media/root
systemctl unmask hostapd
systemctl enable hostapd hotpi resolvconf
reboot