#!/bin/sh

# Vars {{{
debug="1"

## Colors {{{
c_redb='\033[1;31m'
c_magentab='\033[1;35m'
c_reset='\033[0m'
## }}}

osd_id_start="0"
osd_id_end=$(sudo ceph osd getmaxosd | cut -d" " -f3)
# }}}

# Functions
# Check if an OSD exists {{{
check_osd() {
	_osd_id="${1}"

	[ "${debug}" -eq "0" ] && printf "${c_magentab}%-6b${c_reset}\n" "DEBUG : check_osd func − OSD ID to check : ${_osd_id}."

	sudo ceph osd find "${_osd_id}" > /dev/null 2>&1
	return $?
}
# }}}
# Check if an OSD exists {{{
get_osd_host() {
	_osd_id="${1}"
	osd_id_host=""

	[ "${debug}" -eq "0" ] && printf "${c_magentab}%-6b${c_reset}\n" "DEBUG : get_osd_host func − OSD ID to check : ${_osd_id}."

	osd_id_host=$(sudo ceph osd find "${_osd_id}" | awk -F\" '$2 ~ /host/ {print $4}')
}
# }}}

osd_id="${osd_id_start}"

while [ "${osd_id}" -lt "${osd_id_end}" ]; do

	[ "${debug}" -eq "0" ] && printf "${c_magentab}%-6b${c_reset}\n" "DEBUG : Check if OSD ${osd_id} exists."

	if check_osd "${osd_id}"
	then
		get_osd_host "${osd_id}"
		[ "${debug}" -eq "0" ] && printf "${c_magentab}%-6b${c_reset}\n" "DEBUG : OSD ${osd_id} exists on ${c_redb}${osd_id_host}${c_reset}."
	else
		[ "${debug}" -eq "0" ] && printf "${c_magentab}%-6b${c_reset}\n" "DEBUG : ! OSD ${osd_id} does exists !"
		printf '%b\n' "The next OSD ID should be ${c_redb}${osd_id}${c_reset}. If you plan to use var :"
		printf '%b\n' "osd_id=\"${osd_id}\""
		exit 0
	fi

		[ "${debug}" -eq "0" ] && printf "${c_magentab}%-6b${c_reset}\n" "-----------------------------------------------"

	## Increment OSD ID
	osd_id=$((osd_id+1))
done

exit 0