#!/bin/sh

# Restore the Gnome settings from ~/.config/gnome-settings/*.ini
#
# `dconf load` merges into the existing state, implying
#  that keys removed from the *.ini files would still be active
#  => Reset the subtrees we fully manage first,
#     which makes the resulting state deterministic

set -eu



XDG_CONFIG_HOME="${XDG_CONFIG_HOME:-$HOME/.config}"

SETTINGS_DIR="$XDG_CONFIG_HOME/gnome-settings"



# Subtrees fully described by the *.ini files
RESET_PATHS="
/org/gnome/desktop/app-folders/
/org/gnome/desktop/wm/keybindings/
/org/gnome/mutter/keybindings/
/org/gnome/settings-daemon/plugins/media-keys/
/org/gnome/shell/extensions/
/org/gnome/shell/keybindings/
"



if ! command -v dconf >/dev/null 2>&1; then
    echo "dconf is not installed => Nothing to do" >&2
    exit 0
fi


if [ ! -d "$SETTINGS_DIR" ]; then
    echo "No settings found at: $SETTINGS_DIR" >&2
    exit 1
fi



echo "Backing up current GNOME settings to: /tmp/gnome-settings-backup.ini"

dconf dump / > /tmp/gnome-settings-backup.ini



echo "Resetting managed subtrees"

for path in $RESET_PATHS; do
    echo "  $path"
    dconf reset -f "$path"
done



echo "Loading settings from: $SETTINGS_DIR"

for file in "$SETTINGS_DIR"/*.ini; do
    [ -e "$file" ] || continue  # because the glob does not expand if empty
    echo "  $(basename "$file")"
    dconf load / < "$file"
done



echo ""
echo "Log out and back in for all changes to take effect"
echo ""



printf "Log out now? [y/N] "
read -r answer
case "$answer" in
    [Yy]*) gnome-session-quit --logout ;;
esac