#! /bin/sh

# Copyright (c) 2022 Stefan Kreutz <mail@skreutz.com>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

set -o errexit
set -o nounset

err_exit() {
  print -u2 -- "$*"
  exit 1
}

while getopts :hds:n: option; do
  case "$option" in
    d) detach=true ;;
    s) session="$OPTARG" ;;
    n) window="$OPTARG" ;;
    :) err_exit "missing argument for option -$OPTARG" ;;
    ?) err_exit "illegal option: -$OPTARG" ;;
  esac
done
shift $((OPTIND-1))

if [ $# -eq 0 ]; then
  err_exit "missing host argument"
fi
host="$1"
shift

if [ $# -eq 0 ]; then
  err_exit "missing command argument"
fi

cmd="\"\$SHELL\" -ilc '( $* ) || print -u2 -- \"[Exited with status \$?]\" ; printf \"[Press Enter to exit]\" ; read -r'"

exec ssh -t "$host" -- tmux new-session ${detach:+-d} ${session:+-s \"$session\"} ${window:+-n \"$window\"} "$cmd"