#!/usr/bin/env mksh
# Script by Ypnose - http://ywstd.fr

MSSH_FILE="${HOME}/.clusters"

function file_group {
	typeset MSSH_LINE MSSH_READ

	while IFS=$' \t\n' read -r MSSH_LINE; do
		[[ ${MSSH_LINE:0:1} = "#" ]] && continue
		# Check if the group name exists
		[[ ${MSSH_LINE%% *} = "$1" ]] && MSSH_READ=1
		# If MSSH_READ is equal to 1, the group was found
		(( MSSH_READ != 1 )) && continue
		# If the MSSH_LINE is empty, the group is over
		if [[ -n $MSSH_LINE ]]; then
			MSSH_ADDR+="$MSSH_LINE "
		else
			break
		fi
	done <"$MSSH_FILE"

	if [[ -z $MSSH_ADDR ]]; then
		print -u2 -- "$1 group not found"
		exit 2
	fi
}

if [[ -z $1 || $1 = "-h" ]]; then
	print "usage: ${0##*/} [GROUP]"
	exit
fi

if [[ ! -e $MSSH_FILE ]]; then
	print -u2 -- "$MSSH_FILE not found"
	exit 1
fi

file_group "$1"

for h in ${MSSH_ADDR#* }; do
	tmux split-window "ssh $h"
	tmux select-layout tiled
done

tmux set-window-option synchronize-panes on
tmux display-message "[${0##*/}] $1 loaded"
tmux display-panes

exit