#!/usr/bin/env bash

FILENAME="init-$(date -u '+%Y%m%d')_$(uuidgen |cut  -d '-' -f 1).iso"

if [ $# -eq 1 ]; then
	FILENAME="$1"
	echo "Building image to ${FILENAME} ..."
elif [ $# -gt 1 ]; then
	echo 'Usage: ./build.sh [filename]'
	exit 1
else
	echo "Building image to ${FILENAME} ..."
fi

SSH_KEY1=$(head -1 "SSH_KEY1")
SSH_KEY2=$(head -1 "SSH_KEY2")
SSH_KEY3=$(head -1 "SSH_KEY3")

cat user-data | ruby replace.rb "###SSH_KEY_1###" "${SSH_KEY1}" | ruby replace.rb "###SSH_KEY_2###" "${SSH_KEY2}" | ruby replace.rb "###SSH_KEY_3###" "${SSH_KEY3}" > user-data.in && \
	cp -vf user-data.in user-data

cloud-init devel schema --config-file user-data

genisoimage -output ${FILENAME} -volid cidata -joliet -rock user-data meta-data

FILESIZE=$(stat -c %s ${FILENAME} 2>/dev/null)
if [[ "${FILESIZE}" -gt "0" ]]; then
	printf '%s (%d bytes) ... done!\n' ${FILENAME} ${FILESIZE}
else
	printf 'Something went wrong while trying to make %s\n' ${FILENAME}
fi