'use client';

/**
 * 견적관리 리스트 - 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, 견적자 / single: 상태, 정렬)
 */

import { useState, useMemo, useCallback, useEffect } from 'react';
import { useRouter } from 'next/navigation';
import { FileText, FileTextIcon, Clock, FileCheck, Pencil } 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 { Estimate, EstimateStats } from './types';
import {
  ESTIMATE_STATUS_OPTIONS,
  ESTIMATE_SORT_OPTIONS,
  STATUS_STYLES,
  STATUS_LABELS,
} from './types';
import { getEstimateList, getEstimateStats, deleteEstimate, deleteEstimates, getClientOptions, getUserOptions } from './actions';
import type { ClientOption, UserOption } from './actions';

// 테이블 컬럼 정의
const tableColumns = [
  { key: 'no', label: '번호', className: 'w-[60px] text-center' },
  { key: 'estimateCode', label: '견적번호', className: 'w-[100px]' },
  { key: 'partnerName', label: '거래처', className: 'w-[120px]' },
  { key: 'projectName', label: '현장명', className: 'min-w-[150px]' },
  { key: 'estimatorName', label: '견적자', className: 'w-[80px] text-center' },
  { key: 'itemCount', label: '총 개소', className: 'w-[80px] text-center' },
  { key: 'estimateAmount', label: '견적금액', className: 'w-[120px] text-right' },
  { key: 'completedDate', label: '견적완료일', className: 'w-[110px] text-center' },
  { key: 'bidDate', label: '입찰일', className: 'w-[110px] text-center' },
  { key: 'status', label: '상태', className: 'w-[100px] text-center' },
  { key: 'actions', label: '작업', className: 'w-[80px] text-center' },
];

// 금액 포맷팅
function formatAmount(amount: number): string {
  return new Intl.NumberFormat('ko-KR').format(amount);
}

interface EstimateListClientProps {
  initialData?: Estimate[];
  initialStats?: EstimateStats;
}

export default function EstimateListClient({ initialData = [], initialStats }: EstimateListClientProps) {
  const router = useRouter();

  // ===== 외부 상태 (UniversalListPage 외부에서 관리) =====
  // Stats 카드 클릭 필터용
  const [activeStatTab, setActiveStatTab] = useState<'all' | 'pending' | 'completed'>('all');
  // 날짜 범위
  const [startDate, setStartDate] = useState('');
  const [endDate, setEndDate] = useState('');
  // Stats 데이터
  const [stats, setStats] = useState<EstimateStats | null>(initialStats || null);
  // 필터 옵션 데이터
  const [partnerOptions, setPartnerOptions] = useState<ClientOption[]>([]);
  const [estimatorOptions, setEstimatorOptions] = useState<UserOption[]>([]);

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

  // 거래처/견적자 옵션 로드
  useEffect(() => {
    // 거래처 옵션 로드
    getClientOptions().then((result) => {
      if (result.success && result.data) {
        setPartnerOptions(result.data);
      }
    });
    // 견적자(사용자) 옵션 로드
    getUserOptions().then((result) => {
      if (result.success && result.data) {
        setEstimatorOptions(result.data);
      }
    });
  }, []);

  // ===== 핸들러 =====
  const handleRowClick = useCallback(
    (item: Estimate) => {
      router.push(`/ko/construction/project/bidding/estimates/${item.id}?mode=view`);
    },
    [router]
  );

  const handleEdit = useCallback(
    (item: Estimate) => {
      router.push(`/ko/construction/project/bidding/estimates/${item.id}?mode=edit`);
    },
    [router]
  );

  // ===== UniversalListPage Config =====
  const config: UniversalListConfig<Estimate> = useMemo(
    () => ({
      // 페이지 기본 정보
      title: '견적관리',
      description: '견적을 관리합니다',
      icon: FileText,
      basePath: '/construction/project/bidding/estimates',

      // ID 추출
      idField: 'id',

      // API 액션
      actions: {
        getList: async () => {
          const result = await getEstimateList({
            size: 100,
            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 deleteEstimate(id);
          return { success: result.success, error: result.error };
        },
        deleteBulk: async (ids: string[]) => {
          const result = await deleteEstimates(ids);
          return { success: result.success, error: result.error };
        },
      },

      // 테이블 컬럼
      columns: tableColumns,

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

      // 검색 필터
      searchPlaceholder: '견적번호, 거래처, 현장명 검색',
      searchFilter: (item, searchValue) => {
        const search = searchValue.toLowerCase();
        return (
          item.projectName.toLowerCase().includes(search) ||
          item.estimateCode.toLowerCase().includes(search) ||
          item.partnerName.toLowerCase().includes(search)
        );
      },

      // 필터 설정 (PC: 인라인, 모바일: 바텀시트)
      filterConfig: [
        {
          key: 'partner',
          label: '거래처',
          type: 'multi',
          options: partnerOptions,
        },
        {
          key: 'estimator',
          label: '견적자',
          type: 'multi',
          options: estimatorOptions,
        },
        {
          key: 'status',
          label: '상태',
          type: 'single',
          options: ESTIMATE_STATUS_OPTIONS.filter((o) => o.value !== 'all'),
        },
        {
          key: 'sortBy',
          label: '정렬',
          type: 'single',
          options: ESTIMATE_SORT_OPTIONS,
        },
      ],
      initialFilters: {
        partner: [],
        estimator: [],
        status: 'all',
        sortBy: 'latest',
      },
      filterTitle: '견적 필터',

      // 커스텀 필터 함수 (activeStatTab + filterValues 기반)
      customFilterFn: (items, filterValues) => {
        return items.filter((item) => {
          // Stats 탭 필터
          if (activeStatTab === 'pending' && item.status !== 'pending') return false;
          if (activeStatTab === 'completed' && item.status !== 'completed') return false;

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

          // 견적자 필터 (다중선택)
          const estimatorFilters = filterValues.estimator as string[];
          if (estimatorFilters?.length > 0 && !estimatorFilters.includes(item.estimatorId)) return false;

          // 상태 필터
          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) => {
              const dateA = a.completedDate ? new Date(a.completedDate).getTime() : new Date(a.createdAt).getTime();
              const dateB = b.completedDate ? new Date(b.completedDate).getTime() : new Date(b.createdAt).getTime();
              return dateB - dateA;
            });
            break;
          case 'oldest':
            sorted.sort((a, b) => {
              const dateA = a.completedDate ? new Date(a.completedDate).getTime() : new Date(a.createdAt).getTime();
              const dateB = b.completedDate ? new Date(b.completedDate).getTime() : new Date(b.createdAt).getTime();
              return dateA - dateB;
            });
            break;
          case 'bidDateDesc':
            sorted.sort((a, b) => {
              if (!a.bidDate) return 1;
              if (!b.bidDate) return -1;
              return new Date(b.bidDate).getTime() - new Date(a.bidDate).getTime();
            });
            break;
          case 'partnerNameAsc':
            sorted.sort((a, b) => a.partnerName.localeCompare(b.partnerName, 'ko'));
            break;
          case 'partnerNameDesc':
            sorted.sort((a, b) => b.partnerName.localeCompare(a.partnerName, 'ko'));
            break;
          case 'projectNameAsc':
            sorted.sort((a, b) => a.projectName.localeCompare(b.projectName, 'ko'));
            break;
          case 'projectNameDesc':
            sorted.sort((a, b) => b.projectName.localeCompare(a.projectName, 'ko'));
            break;
        }
        return sorted;
      },

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

      // Stats 카드 (동적 계산 with onClick)
      computeStats: (): StatCard[] => [
        {
          label: '전체 견적',
          value: stats?.total ?? 0,
          icon: FileTextIcon,
          iconColor: 'text-blue-600',
          onClick: () => setActiveStatTab('all'),
          isActive: activeStatTab === 'all',
        },
        {
          label: '견적대기',
          value: stats?.pending ?? 0,
          icon: Clock,
          iconColor: 'text-orange-500',
          onClick: () => setActiveStatTab('pending'),
          isActive: activeStatTab === 'pending',
        },
        {
          label: '견적완료',
          value: stats?.completed ?? 0,
          icon: FileCheck,
          iconColor: 'text-green-600',
          onClick: () => setActiveStatTab('completed'),
          isActive: activeStatTab === 'completed',
        },
      ],

      // 삭제 확인 메시지
      deleteConfirmMessage: {
        title: '견적 삭제',
        description: '선택한 견적을 삭제하시겠습니까? 이 작업은 되돌릴 수 없습니다.',
      },

      // 테이블 행 렌더링
      renderTableRow: (
        item: Estimate,
        index: number,
        globalIndex: number,
        handlers: SelectionHandlers & RowClickHandlers<Estimate>
      ) => (
        <TableRow
          key={item.id}
          className="cursor-pointer hover:bg-muted/50"
          onClick={() => handleRowClick(item)}
        >
          <TableCell className="text-center" onClick={(e) => e.stopPropagation()}>
            <Checkbox checked={handlers.isSelected} onCheckedChange={handlers.onToggle} />
          </TableCell>
          <TableCell className="text-center text-muted-foreground">{globalIndex}</TableCell>
          <TableCell>{item.estimateCode}</TableCell>
          <TableCell>{item.partnerName}</TableCell>
          <TableCell>{item.projectName}</TableCell>
          <TableCell className="text-center">{item.estimatorName}</TableCell>
          <TableCell className="text-center">{item.itemCount}</TableCell>
          <TableCell className="text-right">{formatAmount(item.estimateAmount)}</TableCell>
          <TableCell className="text-center">{item.completedDate || '-'}</TableCell>
          <TableCell className="text-center">{item.bidDate || '-'}</TableCell>
          <TableCell className="text-center">
            <span className={STATUS_STYLES[item.status]}>{STATUS_LABELS[item.status]}</span>
          </TableCell>
          <TableCell className="text-center">
            {handlers.isSelected && (
              <div className="flex items-center justify-center gap-1">
                <Button
                  variant="ghost"
                  size="icon"
                  className="h-8 w-8"
                  onClick={(e) => {
                    e.stopPropagation();
                    handleEdit(item);
                  }}
                >
                  <Pencil className="h-4 w-4" />
                </Button>
              </div>
            )}
          </TableCell>
        </TableRow>
      ),

      // 모바일 카드 렌더링
      renderMobileCard: (
        item: Estimate,
        index: number,
        globalIndex: number,
        handlers: SelectionHandlers & RowClickHandlers<Estimate>
      ) => (
        <MobileCard
          key={item.id}
          title={item.projectName}
          subtitle={item.estimateCode}
          badge={STATUS_LABELS[item.status]}
          badgeVariant="secondary"
          isSelected={handlers.isSelected}
          onToggle={handlers.onToggle}
          onClick={() => handleRowClick(item)}
          details={[
            { label: '거래처', value: item.partnerName },
            { label: '견적자', value: item.estimatorName },
            { label: '견적금액', value: `${formatAmount(item.estimateAmount)}원` },
            { label: '입찰일', value: item.bidDate || '-' },
          ]}
        />
      ),
    }),
    [startDate, endDate, activeStatTab, stats, partnerOptions, estimatorOptions, handleRowClick, handleEdit]
  );

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