"use client";

import React from "react";
import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "@/components/ui/table";
import { Button } from "@/components/ui/button";
import { Badge } from "@/components/ui/badge";
import { Shield, ShieldCheck, User as UserIcon, Users, Building2 } from "lucide-react";

interface UserAuthTableProps {
  users: any[];
  isLoading: boolean;
  paginationInfo: {
    currentPage: number;
    pageSize: number;
    totalItems: number;
    totalPages: number;
  };
  onEditAuth: (user: any) => void;
  onPageChange: (page: number) => void;
}

/**
 * 사용자 권한 테이블 컴포넌트
 *
 * 사용자 목록과 권한 정보를 표시하고 권한 변경 기능 제공
 */
export function UserAuthTable({ users, isLoading, paginationInfo, onEditAuth, onPageChange }: UserAuthTableProps) {
  // 권한 레벨 표시
  const getUserTypeInfo = (userType: string) => {
    switch (userType) {
      case "SUPER_ADMIN":
        return {
          label: "최고 관리자",
          icon: <ShieldCheck className="h-3 w-3" />,
          className: "bg-purple-100 text-purple-800 border-purple-300",
        };
      case "COMPANY_ADMIN":
        return {
          label: "회사 관리자",
          icon: <Building2 className="h-3 w-3" />,
          className: "bg-blue-100 text-blue-800 border-blue-300",
        };
      case "USER":
        return {
          label: "일반 사용자",
          icon: <UserIcon className="h-3 w-3" />,
          className: "bg-gray-100 text-gray-800 border-gray-300",
        };
      case "GUEST":
        return {
          label: "게스트",
          icon: <Users className="h-3 w-3" />,
          className: "bg-green-100 text-green-800 border-green-300",
        };
      case "PARTNER":
        return {
          label: "협력업체",
          icon: <Shield className="h-3 w-3" />,
          className: "bg-orange-100 text-orange-800 border-orange-300",
        };
      default:
        return {
          label: userType || "미지정",
          icon: <UserIcon className="h-3 w-3" />,
          className: "bg-gray-100 text-gray-800 border-gray-300",
        };
    }
  };

  // 행 번호 계산
  const getRowNumber = (index: number) => {
    return (paginationInfo.currentPage - 1) * paginationInfo.pageSize + index + 1;
  };

  // 로딩 스켈레톤
  if (isLoading) {
    return (
      <div className="bg-card hidden rounded-lg border shadow-sm lg:block">
        <Table>
          <TableHeader>
            <TableRow className="bg-muted/50 border-b">
              <TableHead className="h-12 w-[80px] text-center text-sm font-semibold">No</TableHead>
              <TableHead className="h-12 text-sm font-semibold">사용자 ID</TableHead>
              <TableHead className="h-12 text-sm font-semibold">사용자명</TableHead>
              <TableHead className="h-12 text-sm font-semibold">회사</TableHead>
              <TableHead className="h-12 text-sm font-semibold">부서</TableHead>
              <TableHead className="h-12 text-center text-sm font-semibold">현재 권한</TableHead>
              <TableHead className="h-12 w-[120px] text-center text-sm font-semibold">액션</TableHead>
            </TableRow>
          </TableHeader>
          <TableBody>
            {Array.from({ length: 10 }).map((_, index) => (
              <TableRow key={index} className="border-b">
                <TableCell className="h-16">
                  <div className="bg-muted h-4 animate-pulse rounded"></div>
                </TableCell>
                <TableCell className="h-16">
                  <div className="bg-muted h-4 animate-pulse rounded"></div>
                </TableCell>
                <TableCell className="h-16">
                  <div className="bg-muted h-4 animate-pulse rounded"></div>
                </TableCell>
                <TableCell className="h-16">
                  <div className="bg-muted h-4 animate-pulse rounded"></div>
                </TableCell>
                <TableCell className="h-16">
                  <div className="bg-muted h-4 animate-pulse rounded"></div>
                </TableCell>
                <TableCell className="h-16">
                  <div className="bg-muted mx-auto h-6 w-24 animate-pulse rounded-full"></div>
                </TableCell>
                <TableCell className="h-16">
                  <div className="bg-muted mx-auto h-8 w-20 animate-pulse rounded"></div>
                </TableCell>
              </TableRow>
            ))}
          </TableBody>
        </Table>
      </div>
    );
  }

  // 빈 상태
  if (users.length === 0) {
    return (
      <div className="bg-card flex h-64 flex-col items-center justify-center rounded-lg border shadow-sm">
        <p className="text-muted-foreground text-sm">등록된 사용자가 없습니다.</p>
      </div>
    );
  }

  // 실제 데이터 렌더링
  return (
    <div className="space-y-4">
      {/* 데스크톱 테이블 */}
      <div className="bg-card hidden rounded-lg border shadow-sm lg:block">
        <Table>
          <TableHeader>
            <TableRow className="bg-muted/50 hover:bg-muted/50 border-b">
              <TableHead className="h-12 w-[80px] text-center text-sm font-semibold">No</TableHead>
              <TableHead className="h-12 text-sm font-semibold">사용자 ID</TableHead>
              <TableHead className="h-12 text-sm font-semibold">사용자명</TableHead>
              <TableHead className="h-12 text-sm font-semibold">회사</TableHead>
              <TableHead className="h-12 text-sm font-semibold">부서</TableHead>
              <TableHead className="h-12 text-center text-sm font-semibold">현재 권한</TableHead>
              <TableHead className="h-12 w-[120px] text-center text-sm font-semibold">액션</TableHead>
            </TableRow>
          </TableHeader>
          <TableBody>
            {users.map((user, index) => {
              const typeInfo = getUserTypeInfo(user.userType);
              return (
                <TableRow key={user.userId} className="hover:bg-muted/50 border-b transition-colors">
                  <TableCell className="h-16 text-center text-sm">{getRowNumber(index)}</TableCell>
                  <TableCell className="h-16 font-mono text-sm">{user.userId}</TableCell>
                  <TableCell className="h-16 text-sm">{user.userName}</TableCell>
                  <TableCell className="h-16 text-sm">{user.companyName || user.companyCode}</TableCell>
                  <TableCell className="h-16 text-sm">{user.deptName || "-"}</TableCell>
                  <TableCell className="h-16 text-center">
                    <Badge variant="outline" className={`gap-1 ${typeInfo.className}`}>
                      {typeInfo.icon}
                      {typeInfo.label}
                    </Badge>
                  </TableCell>
                  <TableCell className="h-16 text-center">
                    <Button variant="outline" size="sm" onClick={() => onEditAuth(user)} className="h-8 gap-1 text-sm">
                      <Shield className="h-3 w-3" />
                      권한 변경
                    </Button>
                  </TableCell>
                </TableRow>
              );
            })}
          </TableBody>
        </Table>
      </div>

      {/* 모바일 카드 뷰 */}
      <div className="grid gap-4 sm:grid-cols-2 lg:hidden">
        {users.map((user, index) => {
          const typeInfo = getUserTypeInfo(user.userType);
          return (
            <div
              key={user.userId}
              className="bg-card hover:bg-muted/50 rounded-lg border p-4 shadow-sm transition-colors"
            >
              {/* 헤더 */}
              <div className="mb-4 flex items-start justify-between">
                <div className="flex-1">
                  <h3 className="text-base font-semibold">{user.userName}</h3>
                  <p className="text-muted-foreground mt-1 font-mono text-sm">{user.userId}</p>
                </div>
                <Badge variant="outline" className={`gap-1 ${typeInfo.className}`}>
                  {typeInfo.icon}
                  {typeInfo.label}
                </Badge>
              </div>

              {/* 정보 */}
              <div className="space-y-2 border-t pt-4">
                <div className="flex justify-between text-sm">
                  <span className="text-muted-foreground">회사</span>
                  <span className="font-medium">{user.companyName || user.companyCode}</span>
                </div>
                <div className="flex justify-between text-sm">
                  <span className="text-muted-foreground">부서</span>
                  <span className="font-medium">{user.deptName || "-"}</span>
                </div>
              </div>

              {/* 액션 */}
              <div className="mt-4 border-t pt-4">
                <Button
                  variant="outline"
                  size="sm"
                  onClick={() => onEditAuth(user)}
                  className="h-9 w-full gap-2 text-sm"
                >
                  <Shield className="h-4 w-4" />
                  권한 변경
                </Button>
              </div>
            </div>
          );
        })}
      </div>

      {/* 페이지네이션 */}
      {paginationInfo.totalPages > 1 && (
        <div className="flex items-center justify-center gap-2">
          <Button
            variant="outline"
            size="sm"
            onClick={() => onPageChange(paginationInfo.currentPage - 1)}
            disabled={paginationInfo.currentPage === 1}
          >
            이전
          </Button>
          <span className="text-muted-foreground text-sm">
            {paginationInfo.currentPage} / {paginationInfo.totalPages}
          </span>
          <Button
            variant="outline"
            size="sm"
            onClick={() => onPageChange(paginationInfo.currentPage + 1)}
            disabled={paginationInfo.currentPage === paginationInfo.totalPages}
          >
            다음
          </Button>
        </div>
      )}
    </div>
  );
}