dotfiles/xsession/bin/lupan-set-theme

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#!/bin/sh
THEME="$1"
if [ "$THEME" = "toggle" ]; then
if grep Materia-dark ~/.config/xsettingsd/xsettingsd.conf > /dev/null; then
THEME=light
else
THEME=dark
fi
fi
if [ "$THEME" = dark ]; then
GTK_THEME=Materia-dark
elif [ "$THEME" = light ]; then
GTK_THEME=Materia-light
else
echo "error: unknown theme: should be either dark, light or toggle" >&2
exit 1
fi
# Alacritty
if [ -f ~/.config/alacritty/alacritty.yml ]; then
sed -i "s/^colors: [*].*/colors: *$THEME/" ~/.config/alacritty/alacritty.yml
fi
if [ -f ~/.config/alacritty/alacritty.toml ]; then
sed -i "s#^import =.*#import = [\"~/.config/alacritty/$THEME.toml\"]#" ~/.config/alacritty/alacritty.toml
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