#!/usr/bin/env bash
# OPSX VPN 管理平台 —— 卸载脚本
set -euo pipefail

APP_NAME="opsx-vpn"
INSTALL_DIR="/opt/${APP_NAME}"
CONFIG_DIR="/etc/${APP_NAME}"
SERVICE_FILE="/etc/systemd/system/${APP_NAME}.service"

# 颜色输出
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[0;33m'
NC='\033[0m'

info()  { echo -e "${GREEN}[INFO]${NC} $*"; }
warn()  { echo -e "${YELLOW}[WARN]${NC} $*"; }
error() { echo -e "${RED}[ERROR]${NC} $*" >&2; }

# 检查 root 权限
if [[ $EUID -ne 0 ]]; then
    error "请使用 root 或 sudo 执行此脚本"
    exit 1
fi

echo ""
warn "============================================"
warn "  卸载 OPSX VPN 管理平台"
warn "============================================"
echo ""

# 停止并禁用服务
if systemctl is-active --quiet "${APP_NAME}" 2>/dev/null; then
    info "停止服务..."
    systemctl stop "${APP_NAME}"
fi

if systemctl is-enabled --quiet "${APP_NAME}" 2>/dev/null; then
    info "禁用服务..."
    systemctl disable "${APP_NAME}"
fi

# 删除 systemd 服务文件
if [[ -f "${SERVICE_FILE}" ]]; then
    info "删除 systemd 服务文件..."
    rm -f "${SERVICE_FILE}"
    systemctl daemon-reload
fi

# 询问是否删除数据
REMOVE_DATA=""
echo ""
read -p "是否删除安装目录 ${INSTALL_DIR}？[y/N] " -r REMOVE_DATA
if [[ "${REMOVE_DATA}" =~ ^[Yy]$ ]]; then
    info "删除安装目录: ${INSTALL_DIR}"
    rm -rf "${INSTALL_DIR}"
else
    info "保留安装目录: ${INSTALL_DIR}"
fi

REMOVE_CONFIG=""
read -p "是否删除配置目录 ${CONFIG_DIR}？[y/N] " -r REMOVE_CONFIG
if [[ "${REMOVE_CONFIG}" =~ ^[Yy]$ ]]; then
    info "删除配置目录: ${CONFIG_DIR}"
    rm -rf "${CONFIG_DIR}"
else
    info "保留配置目录: ${CONFIG_DIR}"
fi

echo ""
info "============================================"
info "  OPSX VPN 管理平台已卸载"
info "============================================"
info ""
info "  残留文件（如未删除）:"
info "    安装目录: ${INSTALL_DIR}"
info "    配置目录: ${CONFIG_DIR}"
info "============================================"