#!/bin/bash

# Retrieve arguments
wifi_ssid=$1
wifi_passphrase=$2
wifi_device=$3
wired_device=$4
ip6_net=$5
ip6_dns0=$6
ip6_dns1=$7
ip4_dns0=$8
ip4_dns1=$9

# Check arguments
# TODO

# Save arguments for future upgrades
sudo yunohost app setting hotspot wifi_ssid -v $wifi_ssid
sudo yunohost app setting hotspot wifi_passphrase -v $wifi_passphrase
sudo yunohost app setting hotspot wifi_device -v $wifi_device
sudo yunohost app setting hotspot wired_device -v $wired_device
sudo yunohost app setting hotspot ip6_net -v $ip6_net
sudo yunohost app setting hotspot ip6_dns0 -v $ip6_dns0
sudo yunohost app setting hotspot ip6_dns1 -v $ip6_dns1
sudo yunohost app setting hotspot ip4_dns0 -v $ip4_dns0
sudo yunohost app setting hotspot ip4_dns1 -v $ip4_dns1

# Install packages
sudo apt-get --assume-yes --force-yes install hostapd radvd isc-dhcp-server

# Install extra packages
sudo apt-get --assume-yes --force-yes install sipcalc

# Compute extra arguments
ip6_expanded_net=$(sipcalc ${ip6_net} | grep Expanded | awk '{ print $NF; }')
ip6_net=$(sipcalc ${ip6_net} | grep Compressed | awk '{ print $NF; }')
ip6_addr=$(echo "$(echo ${ip6_expanded_net} | cut -d: -f1-7):42")
ip6_addr=$(sipcalc ${ip6_addr} | grep Compressed | awk '{ print $NF; }')
ip4_nat_prefix=10.0.242

# Copy confs
sudo install -b -o root -g root -m 0644 ../conf/hostapd.conf /etc/hostapd/
sudo install -b -o root -g root -m 0644 ../conf/radvd.conf /etc/
sudo install -b -o root -g root -m 0644 ../conf/dhcpd.conf /etc/dhcp/

# Fix confs
## hostapd
sudo sed "s|<TPL:WIFI_DEVICE>|${wifi_device}|g" -i /etc/hostapd/hostapd.conf
sudo sed "s|<TPL:WIFI_SSID>|${wifi_ssid}|g" -i /etc/hostapd/hostapd.conf
sudo sed "s|<TPL:WIFI_PASSPHRASE>|${wifi_passphrase}|g" -i /etc/hostapd/hostapd.conf

## radvd
sudo sed "s|<TPL:WIFI_DEVICE>|${wifi_device}|g" -i /etc/radvd.conf
sudo sed "s|<TPL:IP6_NET>|${ip6_net}|g" -i /etc/radvd.conf
sudo sed "s|<TPL:IP6_DNS0>|${ip6_dns0}|g" -i /etc/radvd.conf
sudo sed "s|<TPL:IP6_DNS1>|${ip6_dns1}|g" -i /etc/radvd.conf

## dhcpd
sudo sed "s|<TPL:IP4_DNS0>|${ip4_dns0}|g" -i /etc/dhcp/dhcpd.conf
sudo sed "s|<TPL:IP4_DNS1>|${ip4_dns1}|g" -i /etc/dhcp/dhcpd.conf
sudo sed "s|<TPL:WIFI_DEVICE>|${wifi_device}|g" -i /etc/dhcp/dhcpd.conf
sudo sed "s|<TPL:IP4_NAT_PREFIX>|${ip4_nat_prefix}|g" -i /etc/dhcp/dhcpd.conf

# Copy init script
sudo install -b -o root -g root -m 0755 ../conf/ynh-hotspot /etc/init.d/

# Fix init script
## ynh-hostspot
sudo sed "s|<TPL:IP6_ADDR>|${ip6_addr}|g" -i /etc/init.d/ynh-hotspot
sudo sed "s|<TPL:IP4_NAT_PREFIX>|${ip4_nat_prefix}|g" -i /etc/init.d/ynh-hotspot
sudo sed "s|<TPL:WIFI_DEVICE>|${wifi_device}|g" -i /etc/init.d/ynh-hotspot
sudo sed "s|<TPL:WIRED_DEVICE>|${wired_device}|g" -i /etc/init.d/ynh-hotspot

## hostapd
sudo sed 's|^DAEMON_CONF=$|&/etc/hostapd/hostapd.conf|' -i /etc/init.d/hostapd

# Set default inits
# The boot order of these services are important, so they are disabled by default
# and the ynh-hotspot service handles them.
# All services are registred by yunohost in order to prevent conflicts after the uninstall.
sudo yunohost service add isc-dhcp-server
sudo yunohost service stop isc-dhcp-server
sudo yunohost service disable isc-dhcp-server
sudo yunohost service add radvd
sudo yunohost service stop radvd
sudo yunohost service disable radvd
sudo yunohost service add hostapd 
sudo yunohost service stop hostapd 
sudo yunohost service disable hostapd 

# Gooo
sudo yunohost service add ynh-hotspot
sudo yunohost service enable ynh-hotspot
sudo yunohost service start ynh-hotspot

exit 0