#!/usr/bin/env bash
set -Eeuo pipefail

info () { echo -e "\E[1;34m❯\E[1;36m $1\E[0m" ; }
error () { echo -e >&2 "\E[1;31m❯ ERROR: $1\E[0m" ; }

sleep 1

# Retrieve IP from guest VM
RESPONSE=$(curl -s -m 16 -S http://127.0.0.1:2210/read?command=10 2>&1)

if [[ ! "${RESPONSE}" =~ "\"success\"" ]] ; then
  error "Failed to connect to guest: $RESPONSE" && exit 1
fi

# Retrieve the HTTP port number
if [[ ! "${RESPONSE}" =~ "\"http_port\"" ]] ; then
  error "Failed to parse response from guest: $RESPONSE" && exit 1
fi

rest=${RESPONSE#*http_port}
rest=${rest#*:}
rest=${rest%%,*}
PORT=${rest%%\"*}

[ -z "${PORT}" ] && error "Guest has not set a portnumber yet.." && exit 1

# Retrieve the IP address
if [[ ! "${RESPONSE}" =~ "eth0" ]] ; then
  error "Failed to parse response from guest: $RESPONSE" && exit 1
fi

rest=${RESPONSE#*eth0}
rest=${rest#*ip}
rest=${rest#*:}
rest=${rest#*\"}
IP=${rest%%\"*}

[ -z "${IP}" ] && error "Guest has not received an IP yet.." && exit 1

if [[ "$IP" == "20.20"* ]]; then
  MSG="port ${PORT}"
else
  MSG="http://${IP}:${PORT}"
fi

echo ""
info "--------------------------------------------------------"
info " You can now login to DSM at ${MSG}"
info "--------------------------------------------------------"
echo ""

exit 0