#!/usr/bin/env bash

PID_LIST=()


UPFNS="UPFns"
EXEC_UPFNS="sudo ip netns exec ${UPFNS}"

# Setup network namespace
sudo ip netns del ${UPFNS}
sudo ip link delete veth0
sleep 1
sudo ip netns add ${UPFNS}
sudo -E ${EXEC_UPFNS} ip route add default via 172.16.5.4
sudo ip link add veth0 type veth peer name veth1
sudo ifconfig  veth0 up
sudo ip addr add 172.16.5.4/32 dev veth0
sudo ip route add 172.16.5.3/32 dev veth0
sudo ip link set veth1 netns ${UPFNS}
sudo -E ${EXEC_UPFNS} ip link set veth1 up
sudo -E ${EXEC_UPFNS} ip addr add 172.16.5.3/32 dev veth1
sudo -E ${EXEC_UPFNS} ip route add 172.16.5.4/32 dev veth1
sudo -E ${EXEC_UPFNS} ip route add default via 172.16.5.4
sudo -E ${EXEC_UPFNS} iptables -t nat -A POSTROUTING -s 60.60.0.0/24 -o veth1 -j MASQUERADE
sudo iptables -t nat -A POSTROUTING -s 172.16.5.3/32 -o eno1 -j MASQUERADE  #every outgoing packet from the namespace should be NATed

sudo -E ${EXEC_UPFNS} ifconfig
sudo -E ${EXEC_UPFNS} NFs/upf/build/bin/free5gc-upfd -f config/upfcfg_ralf.yaml &
# PID_LIST+=($!)
sleep 1


sudo -E NFs/upf/build/bin/free5gc-upfd -f config/upfcfg_ims_ralf.yaml &  # aktuell wird immer nur die zweite korrekt gestartet. scheinbar tötet die die erste wieder ...
PID_LIST+=($!)
sleep 1


#cd ../../..




NF_LIST="nrf amf smf udr pcf udm nssf ausf"

export GIN_MODE=release

for NF in ${NF_LIST}; do
    ./bin/${NF} &
    PID_LIST+=($!)
    sleep 0.1
done

bin/smf --smfcfg config/smfcfg_ims.yaml &
PID_LIST+=($!)

#sudo ./bin/n3iwf &
#SUDO_N3IWF_PID=$!
sleep 1
#N3IWF_PID=$(pgrep -P $SUDO_N3IWF_PID)
#PID_LIST+=($SUDO_N3IWF_PID $N3IWF_PID)

function terminate()
{
    # kill amf first
    while $(sudo kill -SIGINT ${PID_LIST[3]} 3>/dev/null); do
        sleep 2
    done

    for ((idx=${#PID_LIST[@]}-1;idx>=0;idx--)); do
        sudo kill -SIGKILL ${PID_LIST[$idx]}
    done
    sudo ip netns del ${UPFNS}
}

trap terminate SIGINT
wait ${PID_LIST}