dotwryn/scwrypts/ssh/omni/manager

#!/bin/zsh
#
# works as a standalone zsh script
#
CONNECTIONS_FILE="$HOME/.config/wryn/remote-connections"
OMNI_SOCKET="omni.socket"
OMNI_TMUX() { tmux -L $OMNI_SOCKET $@; }

sleep 1
OMNI_TMUX new-window -t=omni-manager -dn 'harakiri' "
while true
do
	tmux -L $OMNI_SOCKET list-sessions | grep -v omni-manager | grep -qi omni || {
		tmux -L $OMNI_SOCKET kill-session -t omni-manager
	}
	sleep 5
done
"

CONNECTED()    { echo "\\033[1;32mconnected\\033[0m"; }
DISCONNECTED() { echo "\\033[1;31mdisconnected\\033[0m"; }

SET_UNIQUE_ID() {
	i=0
	while : \
		&& [[ $(OMNI_TMUX list-windows -t=omni | grep "^$REMOTE_ID:" | wc -l) -gt 0 ]] \
		&& [[ ! $(OMNI_TMUX list-windows -t=omni | grep "^$REMOTE_ID:" | awk '{print $2;}') =~ ^$REMOTE_NAME ]] \
		;
	do
		echo "$REMOTE_NAME wants id $REMOTE_ID, but it's in use"
		sleep 1
		REMOTE_ID=$((69-$i))
		((i+=1))
		[[ $i -gt 10 ]] && break
	done
}

while true
do
	clear
	REMOTE_HOSTS=()
	CONNECTION_LIST=$(cat "$CONNECTIONS_FILE")
	cat "$CONNECTIONS_FILE" | grep -q localhost || {
		CONNECTION_LIST=$(echo "1 | $(hostnamectl --static) | localhost\n$CONNECTION_LIST")
	}

	CONNECTION_LIST=$(
		echo "$CONNECTION_LIST" | grep localhost
		echo "$CONNECTION_LIST" | grep -v localhost
	)

	for CONNECTION in $(sed -n 's/#.*//;s/ \+$//;s/|//g;s/ \+/^/g;/./p;' <<< $CONNECTION_LIST)
	do
		CONNECTION=$(echo $CONNECTION | sed 's/[\^]/ /g')
		echo "'$CONNECTION'"

		REMOTE_ID=$(echo $CONNECTION | awk '{print $1;}')
		REMOTE_NAME=$(echo $CONNECTION | awk '{print $2;}')
		REMOTE_HOST=$(echo $CONNECTION | awk '{print $3;}')
		REMOTE_ARGS=($(echo $CONNECTION | awk '{$1=$2=$3="";}1'))

		SET_UNIQUE_ID

		printf "$REMOTE_NAME : "

		OMNI_TMUX list-windows -t=omni | awk '{print $2;}' | grep -q $REMOTE_NAME \
			&& CONNECTED && continue

		SUCCESS=0
		[[ $REMOTE_HOST =~ ^localhost$ ]] && SUCCESS=1

		[[ $SUCCESS -eq 1 ]] || {
			timeout 3 ssh ${REMOTE_ARGS} -o BatchMode=yes $REMOTE_HOST 'command -v tmux 2>/dev/null' 2>/dev/null | grep -q tmux \
				&& SUCCESS=1
		}

		[[ $SUCCESS -eq 1 ]] && {
			OMNI_TMUX new-window -t=omni:$REMOTE_ID -dn $REMOTE_NAME "source ~/.zshrc >/dev/null 2>&1; TMUX= scwrypts -n connect tmux $REMOTE_NAME; echo 'connection closed'; sleep 2"
			OMNI_TMUX list-window -t=omni | awk '{print $1;}' | grep -q '99:' \
				&& OMNI_TMUX kill-window -t omni:99
		}

		OMNI_TMUX list-windows -t=omni | awk '{print $2;}' | grep -q $REMOTE_NAME \
			&& CONNECTED || DISCONNECTED
	done

	echo "\nPress ENTER to search again now (checks every 60 seconds)"
	read -t 60
done