mx

#! /usr/bin/env bash

# http://stackoverflow.com/questions/3432536/create-session-if-none-exists

# ~/bin/tmux-myproject shell script
# The Project name is also used as a session name (usually shorter)

if [ $# -lt 1 ] ; then
	echo -e 'Attach to existing tmux session or create new one. Optionally run command inside the session.\n'
	echo 'Usage:'
	echo "$0 name [command]"
	echo ''
	echo 'List sessions:'
	tmux list-sessions
	exit 1
fi

NAME="$1"
shift
JUST_CREATED="x"

tmux has-session -t "$NAME" 2>/dev/null
if [ "$?" -eq 1 ] ; then
	echo "Session not found, creating and configuring..."
	tmux -2 new-session -d -s "$NAME"
	echo "Applying configuration ${HOME}/.tmux.conf"
	tmux source-file "${HOME}/.tmux.conf"
	CONF="${HOME}/.tmux-${NAME}.conf"
	if [ -f $CONF ]; then
		echo "Applying configuration ${CONF}."
		tmux source-file "${CONF}"
	else
		echo "Configuration ${CONF} not found"
	fi
	JUST_CREATED="yes"
else
	echo "Session found"
fi

if [ $# -gt 0 ]; then
	echo "Running \`$*\` inside tmux..."
	if [ "$JUST_CREATED" == "yes" ]; then
		tmux new-window -t "$NAME:123" $*
		# kill already created window with shell
		# caveat: don't assume its number is 0
		tmux swap-window -t "$NAME:123" -s "$NAME:1" 2>/dev/null
		tmux swap-window -t "$NAME:123" -s "$NAME:0" 2>/dev/null
		tmux kill-window -t "$NAME:123"
	else
		tmux new-window -t "$NAME" $*
	fi
fi

echo "Attaching session..."
tmux -2 attach-session -t "$NAME"