'use client';

/**
 * 공과관리 - UniversalListPage 마이그레이션
 *
 * 기존 IntegratedListTemplateV2 → UniversalListPage config 기반으로 변환
 * - 클라이언트 사이드 필터링 (검색, 필터, 정렬)
 * - Stats 카드 클릭 필터링 (activeStatTab)
 * - DateRangeSelector (headerActions → dateRangeSelector config)
 * - filterConfig (multi: 거래처, 현장명, 공사PM, 작업반장 / single: 공과, 상태, 정렬)
 * - 삭제 기능 (deleteConfirmMessage로 AlertDialog 대체)
 */

import { useState, useMemo, useEffect } from 'react';
import { Zap, Trash2, FileText, CheckCircle, Clock } from 'lucide-react';
import { Button } from '@/components/ui/button';
import { TableCell, TableRow } from '@/components/ui/table';
import { Checkbox } from '@/components/ui/checkbox';
import { MobileCard } from '@/components/organisms/MobileCard';
import {
  UniversalListPage,
  type UniversalListConfig,
  type SelectionHandlers,
  type RowClickHandlers,
  type StatCard,
} from '@/components/templates/UniversalListPage';
import type { Utility, UtilityStats } from './types';
import {
  UTILITY_STATUS_OPTIONS,
  UTILITY_SORT_OPTIONS,
  UTILITY_STATUS_STYLES,
  UTILITY_STATUS_LABELS,
  MOCK_PARTNERS,
  MOCK_SITES,
  MOCK_CONSTRUCTION_PM,
  MOCK_UTILITY_TYPES,
  MOCK_WORK_TEAM_LEADERS,
} from './types';
import {
  getUtilityList,
  getUtilityStats,
  deleteUtility,
  deleteUtilities,
} from './actions';

// 테이블 컬럼 정의
const tableColumns = [
  { key: 'no', label: '번호', className: 'w-[50px] text-center' },
  { key: 'utilityNumber', label: '공과번호', className: 'w-[120px]' },
  { key: 'partnerName', label: '거래처', className: 'w-[100px]' },
  { key: 'siteName', label: '현장명', className: 'min-w-[120px]' },
  { key: 'constructionPM', label: '공사PM', className: 'w-[80px]' },
  { key: 'utilityType', label: '공과', className: 'w-[80px]' },
  { key: 'scheduledDate', label: '공과예정일시', className: 'w-[110px]' },
  { key: 'amount', label: '금액', className: 'w-[100px] text-right' },
  { key: 'workTeamLeader', label: '작업반장', className: 'w-[80px]' },
  { key: 'constructionStartDate', label: '시공투입일', className: 'w-[100px]' },
  { key: 'status', label: '상태', className: 'w-[80px] text-center' },
  { key: 'actions', label: '작업', className: 'w-[100px] text-center' },
];

// 날짜 포맷
function formatDate(dateStr: string | null): string {
  if (!dateStr) return '-';
  return dateStr.split('T')[0];
}

// 금액 포맷
function formatAmount(amount: number): string {
  return amount.toLocaleString('ko-KR') + '원';
}

interface UtilityManagementListClientProps {
  initialData?: Utility[];
  initialStats?: UtilityStats;
}

export default function UtilityManagementListClient({
  initialData = [],
  initialStats,
}: UtilityManagementListClientProps) {
  // ===== 외부 상태 (UniversalListPage 외부에서 관리) =====
  const [activeStatTab, setActiveStatTab] = useState<'all' | 'waiting' | 'complete'>('all');
  const [startDate, setStartDate] = useState<string>('');
  const [endDate, setEndDate] = useState<string>('');
  const [stats, setStats] = useState<UtilityStats | null>(initialStats || null);
  const [searchQuery, setSearchQuery] = useState('');

  // Stats 로드
  useEffect(() => {
    if (!initialStats) {
      getUtilityStats().then((result) => {
        if (result.success && result.data) {
          setStats(result.data);
        }
      });
    }
  }, [initialStats]);

  // ===== UniversalListPage Config =====
  const config: UniversalListConfig<Utility> = useMemo(
    () => ({
      // 페이지 기본 정보
      title: '공과관리',
      description: '공과 목록을 관리합니다',
      icon: Zap,
      basePath: '/construction/project/utility-management',

      // ID 추출
      idField: 'id',

      // API 액션
      actions: {
        getList: async () => {
          const result = await getUtilityList({
            size: 1000,
            startDate: startDate || undefined,
            endDate: endDate || undefined,
          });
          if (result.success && result.data) {
            return {
              success: true,
              data: result.data.items,
              totalCount: result.data.total,
            };
          }
          return { success: false, error: result.error };
        },
        deleteItem: async (id: string) => {
          const result = await deleteUtility(id);
          return { success: result.success, error: result.error };
        },
        deleteBulk: async (ids: string[]) => {
          const result = await deleteUtilities(ids);
          return { success: result.success, error: result.error };
        },
      },

      // 테이블 컬럼
      columns: tableColumns,

      // 클라이언트 사이드 필터링
      clientSideFiltering: true,
      itemsPerPage: 20,

      // 검색 필터
      searchPlaceholder: '공과번호, 거래처, 현장명, 공사PM 검색',
      searchFilter: (item, searchValue) => {
        const search = searchValue.toLowerCase();
        return (
          item.utilityNumber.toLowerCase().includes(search) ||
          item.partnerName.toLowerCase().includes(search) ||
          item.siteName.toLowerCase().includes(search) ||
          item.constructionPM.toLowerCase().includes(search)
        );
      },

      // 필터 설정
      filterConfig: [
        {
          key: 'partners',
          label: '거래처',
          type: 'multi',
          options: MOCK_PARTNERS,
        },
        {
          key: 'sites',
          label: '현장명',
          type: 'multi',
          options: MOCK_SITES,
        },
        {
          key: 'constructionPMs',
          label: '공사PM',
          type: 'multi',
          options: MOCK_CONSTRUCTION_PM,
        },
        {
          key: 'utilityType',
          label: '공과',
          type: 'single',
          options: MOCK_UTILITY_TYPES,
        },
        {
          key: 'workTeamLeaders',
          label: '작업반장',
          type: 'multi',
          options: MOCK_WORK_TEAM_LEADERS,
        },
        {
          key: 'status',
          label: '상태',
          type: 'single',
          options: UTILITY_STATUS_OPTIONS.filter((o) => o.value !== 'all'),
        },
        {
          key: 'sortBy',
          label: '정렬',
          type: 'single',
          options: UTILITY_SORT_OPTIONS,
        },
      ],
      initialFilters: {
        partners: [],
        sites: [],
        constructionPMs: [],
        utilityType: 'all',
        workTeamLeaders: [],
        status: 'all',
        sortBy: 'latest',
      },
      filterTitle: '공과 필터',

      // 커스텀 필터 함수
      customFilterFn: (items, filterValues) => {
        if (!items || items.length === 0) return items;
        return items.filter((item) => {
          // Stats 탭 필터
          if (activeStatTab === 'waiting' && item.status !== 'scheduled' && item.status !== 'issued') return false;
          if (activeStatTab === 'complete' && item.status !== 'completed') return false;

          // 거래처 필터 (다중선택)
          const partnerFilters = filterValues.partners as string[];
          if (partnerFilters?.length > 0 && !partnerFilters.includes(item.partnerId)) return false;

          // 현장명 필터 (다중선택)
          const siteFilters = filterValues.sites as string[];
          if (siteFilters?.length > 0 && !siteFilters.includes(item.siteId)) return false;

          // 공사PM 필터 (다중선택)
          const constructionPMFilters = filterValues.constructionPMs as string[];
          if (constructionPMFilters?.length > 0 && !constructionPMFilters.includes(item.constructionPMId)) return false;

          // 공과 유형 필터 (단일선택)
          const utilityTypeFilter = filterValues.utilityType as string;
          if (utilityTypeFilter && utilityTypeFilter !== 'all') {
            const matchingType = MOCK_UTILITY_TYPES.find((t) => t.value === utilityTypeFilter);
            if (!matchingType || item.utilityType !== matchingType.label) {
              return false;
            }
          }

          // 작업반장 필터 (다중선택)
          const workTeamFilters = filterValues.workTeamLeaders as string[];
          if (workTeamFilters?.length > 0 && !workTeamFilters.includes(item.workTeamLeaderId)) return false;

          // 상태 필터 (단일선택)
          const statusFilter = filterValues.status as string;
          if (statusFilter && statusFilter !== 'all' && item.status !== statusFilter) return false;

          return true;
        });
      },

      // 커스텀 정렬 함수
      customSortFn: (items, filterValues) => {
        const sorted = [...items];
        const sortBy = (filterValues.sortBy as string) || 'latest';

        switch (sortBy) {
          case 'latest':
            sorted.sort((a, b) => new Date(b.scheduledDate).getTime() - new Date(a.scheduledDate).getTime());
            break;
          case 'oldest':
            sorted.sort((a, b) => new Date(a.createdAt).getTime() - new Date(b.createdAt).getTime());
            break;
          case 'partnerNameDesc':
            sorted.sort((a, b) => b.partnerName.localeCompare(a.partnerName, 'ko'));
            break;
          case 'issuedDate':
            sorted.sort((a, b) => new Date(b.scheduledDate).getTime() - new Date(a.scheduledDate).getTime());
            break;
          case 'completedDate':
            sorted.sort((a, b) => {
              if (a.status === 'completed' && b.status !== 'completed') return -1;
              if (a.status !== 'completed' && b.status === 'completed') return 1;
              return 0;
            });
            break;
        }
        return sorted;
      },

      // 검색창 (공통 컴포넌트에서 자동 생성)
      hideSearch: true,
      searchValue: searchQuery,
      onSearchChange: setSearchQuery,

      // 공통 헤더 옵션
      dateRangeSelector: {
        enabled: true,
        startDate,
        endDate,
        onStartDateChange: setStartDate,
        onEndDateChange: setEndDate,
      },

      // Stats 카드
      computeStats: (): StatCard[] => [
        {
          label: '전체 계약',
          value: stats?.totalContract ?? 0,
          icon: FileText,
          iconColor: 'text-blue-600',
          onClick: () => setActiveStatTab('all'),
          isActive: activeStatTab === 'all',
        },
        {
          label: '계약 대기',
          value: stats?.contractWaiting ?? 0,
          icon: Clock,
          iconColor: 'text-yellow-600',
          onClick: () => setActiveStatTab('waiting'),
          isActive: activeStatTab === 'waiting',
        },
        {
          label: '계약 완료',
          value: stats?.contractComplete ?? 0,
          icon: CheckCircle,
          iconColor: 'text-green-600',
          onClick: () => setActiveStatTab('complete'),
          isActive: activeStatTab === 'complete',
        },
      ],

      // 삭제 확인 메시지 (AlertDialog 대체)
      deleteConfirmMessage: {
        title: '공과 삭제',
        description: '선택한 공과를 삭제하시겠습니까? 이 작업은 되돌릴 수 없습니다.',
      },

      // 테이블 행 렌더링
      renderTableRow: (
        item: Utility,
        index: number,
        globalIndex: number,
        handlers: SelectionHandlers & RowClickHandlers<Utility>
      ) => (
        <TableRow
          key={item.id}
          className="hover:bg-muted/50"
        >
          <TableCell className="text-center">
            <Checkbox checked={handlers.isSelected} onCheckedChange={handlers.onToggle} />
          </TableCell>
          <TableCell className="text-center text-muted-foreground">{globalIndex}</TableCell>
          <TableCell>{item.utilityNumber}</TableCell>
          <TableCell>{item.partnerName}</TableCell>
          <TableCell>{item.siteName}</TableCell>
          <TableCell>{item.constructionPM}</TableCell>
          <TableCell>{item.utilityType}</TableCell>
          <TableCell>{formatDate(item.scheduledDate)}</TableCell>
          <TableCell className="text-right">{formatAmount(item.amount)}</TableCell>
          <TableCell>{item.workTeamLeader}</TableCell>
          <TableCell>{formatDate(item.constructionStartDate)}</TableCell>
          <TableCell className="text-center">
            <span className={`px-2 py-1 rounded-full text-xs font-medium ${UTILITY_STATUS_STYLES[item.status]}`}>
              {UTILITY_STATUS_LABELS[item.status]}
            </span>
          </TableCell>
          <TableCell className="text-center">
            {handlers.isSelected && (
              <Button
                variant="ghost"
                size="icon"
                className="h-8 w-8 text-destructive hover:text-destructive"
                onClick={() => handlers.onDelete?.(item)}
              >
                <Trash2 className="h-4 w-4" />
              </Button>
            )}
          </TableCell>
        </TableRow>
      ),

      // 모바일 카드 렌더링
      renderMobileCard: (
        item: Utility,
        index: number,
        globalIndex: number,
        handlers: SelectionHandlers & RowClickHandlers<Utility>
      ) => (
        <MobileCard
          key={item.id}
          title={item.siteName}
          subtitle={item.utilityNumber}
          badge={UTILITY_STATUS_LABELS[item.status]}
          badgeVariant="secondary"
          isSelected={handlers.isSelected}
          onToggle={handlers.onToggle}
          details={[
            { label: '거래처', value: item.partnerName },
            { label: '공사PM', value: item.constructionPM },
            { label: '금액', value: formatAmount(item.amount) },
          ]}
        />
      ),
    }),
    [startDate, endDate, activeStatTab, stats, searchQuery]
  );

  return <UniversalListPage config={config} initialData={initialData} onSearchChange={setSearchQuery} />;
}