#!/bin/sh

THEME="$1"

if [ "$THEME" = "toggle" ] && grep Materia-dark ~/.config/xsettingsd/xsettingsd.conf > /dev/null; then
    THEME=light
else
    THEME=dark
fi

if [ "$THEME" = dark ]; then
    BGCOLOR=#4a4a4a
    GTK_THEME=Materia-dark
elif [ "$THEME" = light ]; then
    BGCOLOR=#cacaca
    GTK_THEME=Materia-light
else
    echo "error: unknown theme: should be either dark, light or toggle" >&2
    exit 1
fi

# Background color
if [ ! -x ~/.fehbg ]; then
    hsetroot -solid "$BGCOLOR"
fi

# Alacritty
if [ -f ~/.config/alacritty/alacritty.yml ]; then
    sed -i "s/^colors: [*].*/colors: *$THEME/" ~/.config/alacritty/alacritty.yml
fi

# GTK
if [ -f ~/.config/xsettingsd/xsettingsd.conf ]; then
    sed -i -E "s#(Net/ThemeName) .*#\\1 \"${GTK_THEME}\"#" ~/.config/xsettingsd/xsettingsd.conf
    pkill -HUP -x xsettingsd
fi

# Emacs
if which emacsclient > /dev/null; then
    emacsclient --eval "(my-select-theme '$THEME)"
fi