#!/usr/bin/env bash
set -euo pipefail

config_home="${XDG_CONFIG_HOME:-$HOME/.config}"
state_home="${XDG_STATE_HOME:-$HOME/.local/state}"
backup_root="$state_home/niri-beyond-glass/backups"
original_root="$state_home/niri-beyond-glass/original"
latest=""
profile="$state_home/niri-beyond-glass/nix-profile"

systemctl --user disable --now dms.service 2>/dev/null || true

if [[ -e "$original_root/.captured" ]]; then
    latest="$original_root"
elif [[ -d "$backup_root" ]]; then
    latest="$(find "$backup_root" -mindepth 1 -maxdepth 1 -type d -printf '%p\n' | sort | tail -n 1)"
fi

rm -rf \
    "$config_home/niri" \
    "$config_home/waybar" \
    "$config_home/fuzzel" \
    "$config_home/mako" \
    "$config_home/swaylock" \
    "$config_home/niri-beyond-glass" \
    "$config_home/DankMaterialShell" \
    "$config_home/alacritty"
rm -f "$config_home/systemd/user/dms.service"
rm -rf "$state_home/DankMaterialShell"

for binary in dms quickshell qs matugen dgop dsearch nixGL; do
    link="$HOME/.local/bin/$binary"
    if [[ -L "$link" && "$(readlink "$link")" == "$profile/"* ]]; then
        rm -f "$link"
    fi
done
rm -f \
    "$HOME/.local/bin/niri-beyond-wallpaper" \
    "$HOME/.local/bin/niri-beyond-browser" \
    "$HOME/.local/bin/niri-beyond-refresh"
rm -f "$state_home/niri-beyond-glass"/nix-profile*

if [[ -n "$latest" && -d "$latest/config" ]]; then
    cp -a "$latest/config/." "$config_home/"
    printf '已恢复备份：%s\n' "$latest"
else
    printf '配置已移除；没有找到可恢复的备份。\n'
fi

systemctl --user daemon-reload 2>/dev/null || true
printf '已移除项目专用 DMS 运行层。Niri 和系统软件包被保留，GNOME/GDM 未修改。\n'