#! /bin/bash

usage() {
    echo "usage: focus_workspace [previous|left|right|1-42]"
}

if [ $# -ne 1 ]; then
    usage; exit 1
fi

# Get current workspace
CURRENT_WORKSPACE=$(i3-msg -t get_workspaces | jq '.[] | select(.focused==true).num')
CURRENT_OUTPUT=$(i3-msg -t get_workspaces | jq '.[] | select(.focused==true).output')
PREVIOUS_WORKSPACE=$(cat ~/.config/i3/run/previous_${CURRENT_OUTPUT})
echo -n ${CURRENT_WORKSPACE} > ~/.config/i3/run/previous_${CURRENT_OUTPUT}

if [ $1 == "previous" ]; then
    i3-msg "workspace number ${PREVIOUS_WORKSPACE}"
elif [ "$1" == "left" ]; then
    [ $CURRENT_WORKSPACE -eq 1 ] && CURRENT_WORKSPACE=43
    i3-msg "workspace number $(($CURRENT_WORKSPACE - 1))"
elif [ "$1" == "right" ]; then
    [ $CURRENT_WORKSPACE -eq 42 ] && CURRENT_WORKSPACE=0
    i3-msg "workspace number $(($CURRENT_WORKSPACE + 1))"
elif [ $1 -gt 0 ] && [ $1 -lt 43 ]; then
    i3-msg "workspace number $1"
else
    usage; exit 1
fi