#!/usr/bin/bash
#----------------------------------------------------------------------
# https://wiki.alpinelinux.org/wiki/Configure_a_Wireguard_interface_(wg)

cd $(dirname $0)
PATH=$PATH:$(dirname "$(pwd)")


#----------------------------------------------------------------------

source ../.pct-helpers


#----------------------------------------------------------------------

readConfig


#----------------------------------------------------------------------

DFL_ID=${DFL_ID:=103}
DFL_CTHOSTNAME=${DFL_CTHOSTNAME:=wireguard}

DFL_CORES=${DFL_CORES:=1}
DFL_RAM=${DFL_RAM:=256}
DFL_SWAP=${DFL_SWAP:=${DFL_RAM}}
DFL_DRIVE=${DFL_DRIVE:=1}

WAN_IP=-
WAN_GATE=-
ADMIN_IP=-
ADMIN_GATE=-
LAN_IP=-
LAN_GATE=-

REBOOT=${REBOOT:=1}

DFL_ENDPOINT=${DFL_ENDPOINT:=$(dig +short ${DOMAIN:-$DFL_DOMAIN} | tail -1)}
xread "Wireguard endpoint: " ENDPOINT

DFL_ENDPOINT_PORT=${DFL_ENDPOINT_PORT:=51820}
xread "Wireguard endpoint port: " ENDPOINT_PORT

CLIENT_IPS=10.42.1.0/16


readVars


DNS=${NS_LAN_IP/\/*}



#----------------------------------------------------------------------

OPTS_STAGE_1="\
	--hostname $CTHOSTNAME \
	--cores $CORES \
	--memory $RAM \
	--swap $SWAP \
	--net0 name=lan,bridge=vmbr${LAN_BRIDGE},firewall=1,ip=dhcp,type=veth \
	--net1 name=admin,bridge=vmbr${ADMIN_BRIDGE},firewall=1,ip=dhcp,type=veth \
	--storage local-lvm \
	--rootfs local-lvm:$DRIVE \
	--unprivileged 1 \
	--features nesting=1 \
	${PCT_EXTRA} \
"

OPTS_STAGE_2="\
	--onboot 1 \
"


#----------------------------------------------------------------------

echo "# Building config..."
buildAssets ENDPOINT ENDPOINT_PORT DNS CLIENT_IPS

echo "# Creating CT..."
pctCreateAlpine $ID "${OPTS_STAGE_1}" "$PASS"

echo "# Installing dependencies..."
@ lxc-attach $ID apk add iptables wireguard-tools-wg-quick make bind-tools

echo "# Copying assets..."
@ pct-push-r $ID ./assets /
@ lxc-attach $ID -- chmod +x /root/getFreeClientIP

#echo "# Setup: wireguard server..."
@ lxc-attach $ID -- bash -c 'cd /root && make server'

echo "# Setup: wireguard default profile..."
@ lxc-attach $ID -- bash -c "cd /root && \
	CLIENT_IP=10.42.0.1/32 \
	ALLOWED_IPS=0.0.0.0/0 \
		make default.client" 
@ lxc-attach $ID -- chmod 600 /etc/wireguard/wg0.conf

echo "# client config:"
@ mkdir -p clients
@ pct pull $ID /etc/wireguard/clients/default.conf clients/default.conf

#echo "# Setup: bridge device..."
@ lxc-attach $ID wg-quick up wg0 

echo "# Post config..."
pctSet $ID "${OPTS_STAGE_2}" $REBOOT

echo "# Done."



#----------------------------------------------------------------------
# vim:set ts=4 sw=4 :