#!/bin/sh

HOST=$(tmux display -p '#h' 2>/dev/null)

if [ "$#" -eq 0 ]; then
	ATTACHED=$(tmux display -p '#{?#{m:*ssh,#{socket_path}},#S,#{host}}' 2>/dev/null)

	set -- "$(
		sshr --all --exclude="$ATTACHED" |
			fzf-tmux -p20%,20% -- --print-query --tac |
			tail -1
	)"
fi

if [ -z "$1" ]; then
	exit 0
fi

target="$1"

if [ "$target" = "$HOST" ]; then
	tmux detach -E 'tmux new -A'
else
	if ! tmux -L ssh has-session -t "$target"; then
		ssh localhost -- :
		tmux -L ssh new-session -ds "$target" ssh -t "$target" "zsh -l -c 'tmux new -A'"
	fi

	if [ -z "$TMUX" ]; then
		tmux -L ssh attach -t "$target" || exit 0
	else
		tmux detach -E "tmux -L ssh attach -t $target" || exit 0
	fi
fi