# sss
# Reattach a GNU Screen session, or a TMux session.
#
# For GNU Screen a custom lock tool (LOCKPRG) can be used
# if ~/bin/ttylocker exists or TTYLOCKER is set (not yet
# implemented for tmux).
# Mikael Berthe, 2015-08

function sss() {
    local TTYLOCKER="${TTYLOCKER:-$HOME/bin/ttylocker}"
    local SCREENBIN="/usr/bin/screen"
    local TMUXBIN="/usr/bin/tmux"

    if [[ -x $SCREENBIN ]]; then
        $SCREENBIN -q -list
        local r=$?
        if (( r == 11 )); then
            # There is 1 usable Screen session, let's go
            [[ -x "$TTYLOCKER" ]] && export LOCKPRG="$TTYLOCKER"
            exec $SCREENBIN -r -x
        elif (( r > 11 )); then
            # There are several usable Screen sessions, heh
            echo "There are several usable Screen sessions..."
            return
        fi
    fi

    # No usable GNU/Screen session, let's try tmux then.
    if [[ -x "$TMUXBIN" ]]; then
        # Number of tmux sessions
        integer n=$($TMUXBIN list-sessions 2>/dev/null | wc -l)
        if (( n == 1 )); then
            # Attach the session
            exec $TMUXBIN attach # -t "$($TMUXBIN list-session -F '#{session_id}')"
        elif (( n > 1 )); then
            # There are several usable tmux sessions, heh
            echo "There are several usable tmux sessions..."
            return
        fi
    fi

    echo "No terminal multiplexer session found."
}