#!/bin/bash

source vars.sh

read -p "Interface           > " iface
read -p "Local WG ListenPort > " port
read -p "Peer WG Pubkey      > " pubkey
read -p "Peer WG Endpoint    > " endpoint
read -p "Peer WG Tunnel IPv4 > " tun4
read -p "Peer WG Tunnel IPv6 > " tun6
read -p "Peer AS             > " asn
read -p "Peer nick           > " nick

node="AS${asn}_$nick"

sudo tee -a /etc/systemd/network/$iface.netdev << END
[NetDev]
Name = $iface
Kind = wireguard
Description = WireGuard

[WireGuard]
ListenPort = $port
PrivateKeyFile = /etc/wireguard/private.key

[WireGuardPeer]
PublicKey = $pubkey
Endpoint = $endpoint
AllowedIPs = 172.16.0.0/12,10.0.0.0/8,fd00::/8,fe80::/10
END

sudo tee -a /etc/systemd/network/$iface.network << END
[Match]
Name = $iface
END

if [ ! -z "$tun6" ]; then
sudo tee -a /etc/systemd/network/$iface.network << END

[Address]
Address = $ip6/128
Peer = $tun6/128
END
fi

if [ ! -z "$tun4" ]; then
sudo tee -a /etc/systemd/network/$iface.network << END

[Address]
Address = $ip4/32
Peer = $tun4/32
END
fi

sudo tee -a /etc/bird/peers/$node.conf << END
protocol bgp $node from dnpeers {
        neighbor $tun4 as $asn;
}

protocol bgp ${node}_v6 from dnpeers {
        neighbor $tun6%$iface as $asn;
}
END