'use client';

/**
 * 검사 목록 - UniversalListPage 마이그레이션
 *
 * 기존 IntegratedListTemplateV2 → UniversalListPage config 기반으로 변환
 * - 서버 사이드 페이지네이션 (getInspections API)
 * - 통계 카드 (getInspectionStats API)
 * - 상태별 탭 필터 (전체/대기/진행중/완료)
 */

import { useState, useEffect, useMemo, useCallback } from 'react';
import { useRouter } from 'next/navigation';
import { Plus, ClipboardCheck, Clock, PlayCircle, CheckCircle2, AlertTriangle } from 'lucide-react';
import { Button } from '@/components/ui/button';
import { Badge } from '@/components/ui/badge';
import { TableCell, TableRow } from '@/components/ui/table';
import { Checkbox } from '@/components/ui/checkbox';
import {
  UniversalListPage,
  type UniversalListConfig,
  type SelectionHandlers,
  type RowClickHandlers,
  type TabOption,
  type StatCard,
  type ListParams,
} from '@/components/templates/UniversalListPage';
import { ListMobileCard, InfoField } from '@/components/organisms/MobileCard';
import { getInspections, getInspectionStats } from './actions';
import { isNextRedirectError } from '@/lib/utils/redirect-error';
import { statusColorMap, inspectionTypeLabels } from './mockData';
import type { Inspection, InspectionStatus, InspectionStats } from './types';

// 탭 필터 정의
type TabFilter = '전체' | InspectionStatus;

// 페이지당 항목 수
const ITEMS_PER_PAGE = 20;

export function InspectionList() {
  const router = useRouter();

  // ===== 통계 데이터 (외부 관리) =====
  const [statsData, setStatsData] = useState<InspectionStats>({
    waitingCount: 0,
    inProgressCount: 0,
    completedCount: 0,
    defectRate: 0,
  });
  const [totalItems, setTotalItems] = useState(0);

  // 초기 통계 로드
  useEffect(() => {
    const loadStats = async () => {
      try {
        const result = await getInspectionStats();
        if (result.success && result.data) {
          setStatsData(result.data);
        }
      } catch (error) {
        if (isNextRedirectError(error)) throw error;
        console.error('[InspectionList] loadStats error:', error);
      }
    };
    loadStats();
  }, []);

  // ===== 행 클릭 핸들러 =====
  const handleRowClick = useCallback(
    (item: Inspection) => {
      router.push(`/quality/inspections/${item.id}?mode=view`);
    },
    [router]
  );

  // ===== 등록 핸들러 =====
  const handleCreate = useCallback(() => {
    router.push('/quality/inspections?mode=new');
  }, [router]);

  // ===== 탭 옵션 (통계 기반) =====
  const tabs: TabOption[] = useMemo(
    () => [
      { value: '전체', label: '전체', count: totalItems },
      { value: '대기', label: '대기', count: statsData.waitingCount, color: 'gray' },
      { value: '진행중', label: '진행중', count: statsData.inProgressCount, color: 'blue' },
      { value: '완료', label: '완료', count: statsData.completedCount, color: 'green' },
    ],
    [totalItems, statsData]
  );

  // ===== 통계 카드 =====
  const stats: StatCard[] = useMemo(
    () => [
      {
        label: '금일 대기 건수',
        value: `${statsData.waitingCount}건`,
        icon: Clock,
        iconColor: 'text-gray-600',
      },
      {
        label: '진행 중 검사',
        value: `${statsData.inProgressCount}건`,
        icon: PlayCircle,
        iconColor: 'text-blue-600',
      },
      {
        label: '금일 완료 건수',
        value: `${statsData.completedCount}건`,
        icon: CheckCircle2,
        iconColor: 'text-green-600',
      },
      {
        label: '불량 발생률',
        value: `${statsData.defectRate.toFixed(1)}%`,
        icon: AlertTriangle,
        iconColor: statsData.defectRate > 0 ? 'text-red-600' : 'text-gray-400',
      },
    ],
    [statsData]
  );

  // ===== UniversalListPage Config =====
  const config: UniversalListConfig<Inspection> = useMemo(
    () => ({
      // 페이지 기본 정보
      title: '검사 목록',
      description: '품질검사 관리',
      icon: ClipboardCheck,
      basePath: '/quality/inspections',

      // ID 추출
      idField: 'id',

      // API 액션 (서버 사이드 페이지네이션)
      actions: {
        getList: async (params?: ListParams) => {
          try {
            const result = await getInspections({
              page: params?.page || 1,
              size: params?.pageSize || ITEMS_PER_PAGE,
              q: params?.search || undefined,
              status: params?.tab !== '전체' ? (params?.tab as InspectionStatus) : undefined,
            });

            if (result.success) {
              // 통계 다시 로드
              const statsResult = await getInspectionStats();
              if (statsResult.success && statsResult.data) {
                setStatsData(statsResult.data);
              }

              // totalItems 업데이트 (탭용)
              setTotalItems(result.pagination.total);

              return {
                success: true,
                data: result.data,
                totalCount: result.pagination.total,
                totalPages: result.pagination.lastPage,
              };
            }
            return { success: false, error: result.error };
          } catch (error) {
            if (isNextRedirectError(error)) throw error;
            return { success: false, error: '데이터 로드 중 오류가 발생했습니다.' };
          }
        },
      },

      // 테이블 컬럼
      columns: [
        { key: 'no', label: '번호', className: 'w-[60px] text-center' },
        { key: 'inspectionType', label: '검사유형', className: 'w-[80px]' },
        { key: 'requestDate', label: '요청일', className: 'w-[100px]' },
        { key: 'itemName', label: '품목명', className: 'min-w-[150px]' },
        { key: 'lotNo', label: 'LOT NO', className: 'min-w-[130px]' },
        { key: 'status', label: '상태', className: 'w-[80px]' },
        { key: 'inspector', label: '담당자', className: 'w-[80px]' },
      ],

      // 서버 사이드 페이지네이션
      clientSideFiltering: false,
      itemsPerPage: ITEMS_PER_PAGE,

      // 검색
      searchPlaceholder: 'LOT번호, 품목명, 공정명 검색...',

      // 탭 설정
      tabs,
      defaultTab: '전체',

      // 통계 카드
      stats,

      // 헤더 액션 (등록 버튼)
      headerActions: () => (
        <Button onClick={handleCreate}>
          <Plus className="w-4 h-4 mr-1.5" />
          검사 등록
        </Button>
      ),

      // 테이블 행 렌더링
      renderTableRow: (
        item: Inspection,
        index: number,
        globalIndex: number,
        handlers: SelectionHandlers & RowClickHandlers<Inspection>
      ) => {
        return (
          <TableRow
            key={item.id}
            className={`cursor-pointer hover:bg-muted/50 ${handlers.isSelected ? 'bg-blue-50' : ''}`}
            onClick={() => handleRowClick(item)}
          >
            <TableCell className="text-center" onClick={(e) => e.stopPropagation()}>
              <Checkbox
                checked={handlers.isSelected}
                onCheckedChange={handlers.onToggle}
              />
            </TableCell>
            <TableCell className="text-center text-muted-foreground">{globalIndex}</TableCell>
            <TableCell>
              <Badge variant="outline" className="text-xs">
                {item.inspectionType}
              </Badge>
            </TableCell>
            <TableCell>{item.requestDate}</TableCell>
            <TableCell className="font-medium">{item.itemName}</TableCell>
            <TableCell>{item.lotNo}</TableCell>
            <TableCell>
              <Badge className={`${statusColorMap[item.status]} border-0`}>
                {item.status}
              </Badge>
            </TableCell>
            <TableCell>{item.inspector || '-'}</TableCell>
          </TableRow>
        );
      },

      // 모바일 카드 렌더링
      renderMobileCard: (
        item: Inspection,
        index: number,
        globalIndex: number,
        handlers: SelectionHandlers & RowClickHandlers<Inspection>
      ) => {
        return (
          <ListMobileCard
            key={item.id}
            id={item.id}
            isSelected={handlers.isSelected}
            onToggleSelection={handlers.onToggle}
            onClick={() => handleRowClick(item)}
            headerBadges={
              <>
                <Badge variant="outline" className="text-xs">#{globalIndex}</Badge>
                <Badge variant="outline" className="text-xs">{item.inspectionType}</Badge>
              </>
            }
            title={item.itemName}
            statusBadge={
              <Badge className={`${statusColorMap[item.status]} border-0`}>
                {item.status}
              </Badge>
            }
            infoGrid={
              <div className="grid grid-cols-2 gap-x-4 gap-y-3">
                <InfoField label="검사유형" value={inspectionTypeLabels[item.inspectionType]} />
                <InfoField label="LOT NO" value={item.lotNo} />
                <InfoField label="요청일" value={item.requestDate} />
                <InfoField label="담당자" value={item.inspector || '-'} />
                <InfoField label="공정명" value={item.processName} />
                <InfoField label="수량" value={`${item.quantity} ${item.unit}`} />
              </div>
            }
          />
        );
      },
    }),
    [tabs, stats, handleRowClick, handleCreate]
  );

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