#!/bin/sh
# These are the groups that will be toggled between. They take the format <layout>:<variant>
# If you want the default US layout, use us:basic
groups="us:dvorak de:nodeadkeys"

index() {
    echo "$groups" | cut -d ' ' -f "$1"
}

if [ "$1" = "-n" ]; then
    newgroup="$(setxkbmap -query | grep -oP '(layout|variant):\s*\K\w+' | sed ':a;N;s/\n/:/')"
elif [ "$1" = "" ]; then
    current="$(setxkbmap -query | grep -oP '(layout|variant):\s*\K\w+' | sed ':a;N;s/\n/:/')"
    i=1
    while [ ! "$found" ]; do
        group=$(index $i)
        if [ "$group" = "$current" ]; then
            newgroup=$(index $((i + 1)))
            [ -z "$newgroup" ] && newgroup=$(index 1)
            found=true
        elif [ -z "$group" ]; then
            newgroup=$(index 1)
            found=true
        fi
        i=$((i + 1))
    done
else
    newgroup="$1"
fi

setxkbmap \
    -layout "$(echo "$newgroup" | cut -d ':' -f1)" \
    -variant "$(echo "$newgroup" | cut -d ':' -f2)" \
    -option caps:super \
    1>/dev/null 2>&1 ||
    echo "Unkown keyboard layout" >&2

xset r rate 300 50
xset -q | grep "Caps Lock:\s*on" && xdotool key Caps_Lock

killall xcape 2>/dev/null
xcape -e 'Super_L=Escape'

sleep 0.03
[ "$1" != "-n" ] && pkill -RTMIN+15 dwmblocks