# 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"

    local session="$1"

    if [[ -x $SCREENBIN ]]; then

        $SCREENBIN -q -list $session

        local r=$?

        if (( r == 11 )); then

            # There is 1 usable Screen session, let's go

            [[ -x "$TTYLOCKER" ]] && export LOCKPRG="$TTYLOCKER"

            exec $SCREENBIN -r -x $session

        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

        if [[ -n $session ]]; then

            $TMUXBIN has-session -t "$session" &&

                exec $TMUXBIN attach-session -t "$1"

            return # Exit function with error code

        fi

        # 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."

}

# From http://stackoverflow.com/questions/7814612/is-there-any-way-to-redraw-tmux-window-when-switching-smaller-monitor-to-bigger

# A big thank-you to Chris Johnsen for this one.

# (Code slightly modified - Mikael)

function tmux_takeover() {

    # create a temporary session that displays the "how to go back" message

    tmp='takeover_temp_session'

    if ! tmux has-session -t "$tmp" >/dev/null 2>&1; then

        tmux new-session -d -s "$tmp"

        tmux set-option -t "$tmp" set-remain-on-exit on >/dev/null

        tmux new-window -kt "$tmp":0 \

            'echo -e "\nUse Prefix + L (i.e. ^B L) to return to session."'

    fi

    # switch any clients attached to the target session to the temp session

    session="$1"

    for client in $(tmux list-clients -t "$session" -F '#{client_tty}'); do

        tmux switch-client -c "$client" -t "$tmp"

    done

    # attach to the target session

    tmux attach -t "$session"

}