#!/bin/bash
# ============================================================
# FMO Audit Service (FAS) — Linux 卸载脚本
# 用法: curl -fsSL https://bg5esn.com/share/fmo/fas-installer/uninstall.sh | sudo bash
# ============================================================
set -e
INSTALL_DIR="/opt/fmo-fas"
CACHE_DIR="/var/cache/fmo-fas"
SERVICE_NAME="fmo-fas"
RUN_USER="fmo-audit"

RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[1;33m'; NC='\033[0m'
err()  { printf "${RED}%s${NC}\n" "$*"; }
ok()   { printf "${GREEN}%s${NC}\n" "$*"; }
warn() { printf "${YELLOW}%s${NC}\n" "$*"; }

if [ "$(id -u)" -ne 0 ]; then
    err "请以 root 权限运行"
    exit 1
fi

echo "== FMO Audit Service 卸载 =="

# 停止并移除服务
if systemctl list-unit-files 2>/dev/null | grep -q "^${SERVICE_NAME}\.service"; then
    systemctl stop "$SERVICE_NAME" 2>/dev/null || true
    systemctl disable "$SERVICE_NAME" 2>/dev/null || true
    rm -f "/etc/systemd/system/${SERVICE_NAME}.service"
    systemctl daemon-reload
    ok "已移除 systemd 服务 $SERVICE_NAME"
fi

# 删除数据目录（执行卸载即用户明确意愿，直接彻底删除，对齐 SAS）
rm -rf "$INSTALL_DIR"
rm -rf "$CACHE_DIR"
ok "已删除 $INSTALL_DIR"

# 删除专用用户
if id "$RUN_USER" >/dev/null 2>&1; then
    userdel "$RUN_USER" 2>/dev/null && ok "已删除用户 $RUN_USER" || warn "用户 $RUN_USER 删除失败（可能仍有进程占用）"
fi

ok "卸载完成"