#!/bin/bash

#
# This script will make a shell script that can be used as a cloud-init style user data script
# or run as root from a debian/ubuntu DigitalOcean VM to replace that distribution with
# RancherOS
#
# Its intended to be used for development, but can easily be modified to be more generally
# useful - make a Pull Request :)
# 
# Note: this script will run caddy in your os/dist/artifacts/ directory, so don't leave it
# running unsupervised.

DIST="../../../dist/artifacts"
command -v caddy >/dev/null 2>&1 || { echo >&2 "I require caddy but it's not installed, see https://github.com/mholt/caddy#quick-start . Aborting."; exit 1; }

if [[ -e "dist/artifacts" ]]; then
    cd scripts/hosting/digitalocean
fi

if [[ ! -e "$DIST" ]]; then
    echo "Need to 'make release' so that there are files to serve. Aborting."
    exit 1
fi

source ${DIST}/../../scripts/version
VMLINUX=$(ls -1 ${DIST}/ | grep "^vmlinuz-" | head -n1)
INITRD="initrd-${VERSION}"

IP=$(curl ipinfo.io/ip)
PORT=2115

#SOURCECONFIG="cloud-config.yml"
SOURCECONFIG="fedora-symbiote.yml"
CLOUDCONFIG="digitalocean.sh"

cat ${SOURCECONFIG} \
    | sed "s|^URL_BASE.*$|URL_BASE=http://${IP}:${PORT}|g" \
    | sed "s|^VMLINUX.*$|VMLINUX=${VMLINUX}|g" \
    | sed "s|^INITRD.*$|INITRD=${INITRD}|g" \
    > ${DIST}/${CLOUDCONFIG}

echo "Hosting a cloud-config script at http://${IP}:${PORT}/${CLOUDCONFIG}"
echo "Usage:"
echo
echo "#include"
echo "http://${IP}:${PORT}/${CLOUDCONFIG}"
echo
echo

cd ${DIST}
caddy -log stdout -port ${PORT}