"use client"

import * as React from "react"
import { toast } from "sonner"
import { ArrowUpDown, CheckSquare, Plus, Search, Square, X, Loader2 } from "lucide-react"
import { Input } from "@/components/ui/input"
import { Calendar } from "@/components/ui/calendar"
import { Popover, PopoverContent, PopoverTrigger } from "@/components/ui/popover"
import { CalendarIcon } from "lucide-react"
import { format } from "date-fns"
import { ko } from "date-fns/locale"

import { Button } from "@/components/ui/button"
import {
  Dialog,
  DialogContent,
  DialogHeader,
  DialogTitle,
  DialogTrigger,
} from "@/components/ui/dialog"
import {
  Form,
  FormControl,
  FormField,
  FormItem,
  FormLabel,
  FormMessage,
  FormDescription,
} from "@/components/ui/form"
import { zodResolver } from "@hookform/resolvers/zod"
import { useForm } from "react-hook-form"
import * as z from "zod"
import { EstimateProjectSelector } from "@/components/BidProjectSelector"
import { type Project } from "@/lib/rfqs/service"
import { createTechSalesRfq } from "@/lib/techsales-rfq/service"
import { useSession } from "next-auth/react"
import { Separator } from "@/components/ui/separator"
import { Badge } from "@/components/ui/badge"
import {
  DropdownMenu,
  DropdownMenuCheckboxItem,
  DropdownMenuContent,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu"
import { cn } from "@/lib/utils"
import { ScrollArea } from "@/components/ui/scroll-area"
import {
  Table,
  TableBody,
  TableCell,
  TableHead,
  TableHeader,
  TableRow,
} from "@/components/ui/table"

// 실제 데이터 서비스 import
import { 
  getWorkTypes,
  getAllShipbuildingItemsForCache,
  getShipTypes,
  type ShipbuildingItem,
  type WorkType 
} from "@/lib/items-tech/service"

// 유효성 검증 스키마 - 자재코드(item_code) 배열로 변경
const createRfqSchema = z.object({
  biddingProjectId: z.number({
    required_error: "프로젝트를 선택해주세요.",
  }),
  materialCodes: z.array(z.string()).min(1, {
    message: "적어도 하나의 자재코드를 선택해야 합니다.",
  }),
  dueDate: z.date({
    required_error: "마감일을 선택해주세요.",
  }),
})

// 폼 데이터 타입
type CreateRfqFormValues = z.infer<typeof createRfqSchema>

// 공종 타입 정의
interface WorkTypeOption {
  code: WorkType
  name: string
  description: string
}

interface CreateRfqDialogProps {
  onCreated?: () => void;
}

export function CreateRfqDialog({ onCreated }: CreateRfqDialogProps) { 
  const { data: session } = useSession()
  const [isProcessing, setIsProcessing] = React.useState(false)
  const [isDialogOpen, setIsDialogOpen] = React.useState(false)
  const [selectedProject, setSelectedProject] = React.useState<Project | null>(null)
  
  // 검색 및 필터링 상태
  const [itemSearchQuery, setItemSearchQuery] = React.useState("")
  const [selectedWorkType, setSelectedWorkType] = React.useState<WorkType | null>(null)
  const [selectedShipType, setSelectedShipType] = React.useState<string | null>(null)
  const [selectedItems, setSelectedItems] = React.useState<ShipbuildingItem[]>([])
  
  // 데이터 상태
  const [workTypes, setWorkTypes] = React.useState<WorkTypeOption[]>([])
  const [allItems, setAllItems] = React.useState<ShipbuildingItem[]>([])
  const [shipTypes, setShipTypes] = React.useState<string[]>([])
  const [isLoadingItems, setIsLoadingItems] = React.useState(false)
  const [dataLoadError, setDataLoadError] = React.useState<string | null>(null)
  const [retryCount, setRetryCount] = React.useState(0)

  // 데이터 로딩 함수를 useCallback으로 메모이제이션
  const loadData = React.useCallback(async (isRetry = false) => {
    try {
      if (!isRetry) {
        setIsLoadingItems(true)
        setDataLoadError(null)
      }
      
      console.log(`데이터 로딩 시작... ${isRetry ? `(재시도 ${retryCount + 1}회)` : ''}`)
      
      const [workTypesResult, itemsResult, shipTypesResult] = await Promise.all([
        getWorkTypes(),
        getAllShipbuildingItemsForCache(),
        getShipTypes()
      ])
      
      console.log("WorkTypes 결과:", workTypesResult)
      console.log("Items 결과:", itemsResult)
      console.log("ShipTypes 결과:", shipTypesResult)
      
      // WorkTypes 설정
      if (Array.isArray(workTypesResult)) {
        setWorkTypes(workTypesResult)
      } else {
        console.error("WorkTypes 데이터 형식 오류:", workTypesResult)
        throw new Error("공종 데이터를 불러올 수 없습니다.")
      }
      
      // Items 설정
      if (!itemsResult.error && itemsResult.data && Array.isArray(itemsResult.data)) {
        setAllItems(itemsResult.data)
        console.log("아이템 설정 완료:", itemsResult.data.length, "개")
      } else {
        console.error("아이템 로딩 실패:", itemsResult.error)
        throw new Error(itemsResult.error || "아이템 데이터를 불러올 수 없습니다.")
      }
      
      // ShipTypes 설정
      if (!shipTypesResult.error && shipTypesResult.data && Array.isArray(shipTypesResult.data)) {
        setShipTypes(shipTypesResult.data)
        console.log("선종 설정 완료:", shipTypesResult.data)
      } else {
        console.error("선종 로딩 실패:", shipTypesResult.error)
        throw new Error(shipTypesResult.error || "선종 데이터를 불러올 수 없습니다.")
      }
      
      // 성공 시 재시도 카운터 리셋
      setRetryCount(0)
      setDataLoadError(null)
      console.log("데이터 로딩 완료")
      
    } catch (error) {
      const errorMessage = error instanceof Error ? error.message : '알 수 없는 오류가 발생했습니다.'
      console.error("데이터 로딩 오류:", errorMessage)
      
      setDataLoadError(errorMessage)
      
      // 3회까지 자동 재시도 (500ms 간격)
      if (retryCount < 2) {
        console.log(`${500 * (retryCount + 1)}ms 후 재시도...`)
        setTimeout(() => {
          setRetryCount(prev => prev + 1)
          loadData(true)
        }, 500 * (retryCount + 1))
      } else {
        // 재시도 실패 시 사용자에게 알림
        toast.error(`데이터 로딩에 실패했습니다: ${errorMessage}`)
      }
    } finally {
      if (!isRetry) {
        setIsLoadingItems(false)
      }
    }
  }, [retryCount])

  // 다이얼로그가 열릴 때마다 데이터 로딩
  React.useEffect(() => {
    if (isDialogOpen) {
      // 다이얼로그가 열릴 때마다 데이터 상태 초기화 및 로딩
      setDataLoadError(null)
      setRetryCount(0)
      
      // 이미 데이터가 있고 에러가 없다면 로딩하지 않음 (성능 최적화)
      if (allItems.length > 0 && workTypes.length > 0 && shipTypes.length > 0 && !dataLoadError) {
        console.log("기존 데이터 사용 (캐시)")
        return
      }
      
      loadData()
    }
  }, [isDialogOpen, loadData, allItems.length, workTypes.length, shipTypes.length, dataLoadError])

  // 수동 새로고침 함수
  const handleRefreshData = React.useCallback(() => {
    setDataLoadError(null)
    setRetryCount(0)
    loadData()
  }, [loadData])

  // RFQ 생성 폼
  const form = useForm<CreateRfqFormValues>({
    resolver: zodResolver(createRfqSchema),
    defaultValues: {
      biddingProjectId: undefined,
      materialCodes: [],
      dueDate: undefined, // 기본값 제거
    }
  })

  // 필터링된 아이템 목록 가져오기
  const availableItems = React.useMemo(() => {
    let filtered = [...allItems]

    // 선종 필터
    if (selectedShipType) {
      filtered = filtered.filter(item => item.shipTypes === selectedShipType)
    }

    // 공종 필터  
    if (selectedWorkType) {
      filtered = filtered.filter(item => item.workType === selectedWorkType)
    }

    // 검색어 필터
    if (itemSearchQuery && itemSearchQuery.trim()) {
      const query = itemSearchQuery.toLowerCase().trim()
      filtered = filtered.filter(item => 
        item.itemCode.toLowerCase().includes(query) ||
        (item.itemList && item.itemList.toLowerCase().includes(query))
      )
    }

    return filtered
  }, [allItems, itemSearchQuery, selectedWorkType, selectedShipType])

  // 사용 가능한 선종 목록 가져오기
  const availableShipTypes = React.useMemo(() => {
    return shipTypes
  }, [shipTypes])

  // 프로젝트 선택 처리
  const handleProjectSelect = (project: Project) => {
    setSelectedProject(project)
    form.setValue("biddingProjectId", project.id)
    // 선택 초기화
    setSelectedItems([])
    setSelectedShipType(null)
    setSelectedWorkType(null)
    setItemSearchQuery("")
    form.setValue("materialCodes", [])
  }

  // 아이템 선택/해제 처리
  const handleItemToggle = (item: ShipbuildingItem) => {
    const isSelected = selectedItems.some(selected => selected.id === item.id)
    
    if (isSelected) {
      // 아이템 선택 해제
      const newSelectedItems = selectedItems.filter(selected => selected.id !== item.id)
      setSelectedItems(newSelectedItems)
      form.setValue("materialCodes", newSelectedItems.map(item => item.itemCode))
    } else {
      // 아이템 선택 추가
      const newSelectedItems = [...selectedItems, item]
      setSelectedItems(newSelectedItems)
      form.setValue("materialCodes", newSelectedItems.map(item => item.itemCode))
    }
  }

  // 아이템 제거 처리
  const handleRemoveItem = (itemId: number) => {
    const newSelectedItems = selectedItems.filter(item => item.id !== itemId)
    setSelectedItems(newSelectedItems)
    form.setValue("materialCodes", newSelectedItems.map(item => item.itemCode))
  }

  // RFQ 생성 함수
  const handleCreateRfq = async (data: CreateRfqFormValues) => {
    try {
      setIsProcessing(true)
      
      // 사용자 인증 확인
      if (!session?.user?.id) {
        throw new Error("로그인이 필요합니다")
      }

      // 선택된 아이템들을 아이템명(itemList)으로 그룹핑
      const groupedItems = selectedItems.reduce((groups, item) => {
        const actualItemName = item.itemList // 실제 조선 아이템명
        if (!actualItemName) {
          throw new Error(`아이템 "${item.itemCode}"의 아이템명(itemList)이 없습니다.`)
        }
        if (!groups[actualItemName]) {
          groups[actualItemName] = []
        }
        groups[actualItemName].push(item)
        return groups
      }, {} as Record<string, typeof selectedItems>)

      const rfqGroups = Object.entries(groupedItems).map(([actualItemName, items]) => {
        const itemCodes = items.map(item => item.itemCode) // 자재그룹코드들
        const joinedItemCodes = itemCodes.join(',')
        return {
          actualItemName,
          items,
          itemCodes,
          joinedItemCodes,
          codeLength: joinedItemCodes.length,
          isOverLimit: joinedItemCodes.length > 255
        }
      })

      // 255자 초과 그룹 확인
      const overLimitGroups = rfqGroups.filter(group => group.isOverLimit)
      if (overLimitGroups.length > 0) {
        const groupNames = overLimitGroups.map(g => `"${g.actualItemName}" (${g.codeLength}자)`).join(', ')
        throw new Error(`다음 아이템 그룹의 자재코드가 255자를 초과합니다: ${groupNames}`)
      }

      // 각 그룹별로 RFQ 생성
      const createPromises = rfqGroups.map(group => 
        createTechSalesRfq({
          biddingProjectId: data.biddingProjectId,
          itemShipbuildingId: group.items[0].id, // 그룹의 첫 번째 아이템의 shipbuilding ID 사용
          materialGroupCodes: group.itemCodes, // 해당 그룹의 자재코드들
          createdBy: Number(session.user.id),
          dueDate: data.dueDate,
        })
      )

      const results = await Promise.all(createPromises)
      
      // 오류 확인
      const errors = results.filter(result => result.error)
      if (errors.length > 0) {
        throw new Error(errors.map(e => e.error).join(', '))
      }
      
      // 성공적으로 생성되면 다이얼로그 닫기 및 메시지 표시
      const totalRfqs = results.reduce((sum, result) => sum + (result.data?.length || 0), 0)
      toast.success(`${rfqGroups.length}개 아이템 그룹으로 총 ${totalRfqs}개의 RFQ가 성공적으로 생성되었습니다`)
      setIsDialogOpen(false)
      form.reset({
        biddingProjectId: undefined,
        materialCodes: [],
        dueDate: undefined, // 기본값 제거
      })
      setSelectedProject(null)
      setItemSearchQuery("")
      setSelectedWorkType(null)
      setSelectedShipType(null)
      setSelectedItems([])
      // 에러 상태 및 재시도 카운터 초기화
      setDataLoadError(null)
      setRetryCount(0)
      
      // 생성 후 콜백 실행
      if (onCreated) {
        onCreated()
      }
      
    } catch (error) {
      console.error("RFQ 생성 오류:", error)
      toast.error(`RFQ 생성 중 오류가 발생했습니다: ${error instanceof Error ? error.message : '알 수 없는 오류'}`)
    } finally {
      setIsProcessing(false)
    }
  }

  return (
    <Dialog
      open={isDialogOpen}
      onOpenChange={(open) => {
        setIsDialogOpen(open)
        if (!open) {
          form.reset({
            biddingProjectId: undefined,
            materialCodes: [],
            dueDate: undefined, // 기본값 제거
          })
          setSelectedProject(null)
          setItemSearchQuery("")
          setSelectedWorkType(null)
          setSelectedShipType(null)
          setSelectedItems([])
          // 에러 상태 및 재시도 카운터 초기화
          setDataLoadError(null)
          setRetryCount(0)
        }
      }}
    >
      <DialogTrigger asChild>
        <Button
          variant="default"
          size="sm"
          className="gap-2"
          disabled={isProcessing}
        >
          <Plus className="size-4" aria-hidden="true" />
          <span className="hidden sm:inline">RFQ 생성</span>
        </Button>
      </DialogTrigger>
      <DialogContent 
        className="max-w-none h-[90vh] overflow-y-auto flex flex-col"
        style={{ width: '1200px' }}
      >
        <DialogHeader className="border-b pb-4">
          <DialogTitle>RFQ 생성</DialogTitle>
        </DialogHeader>
        
        <div className="space-y-6 p-1 overflow-y-auto">
          <Form {...form}>
            <form onSubmit={form.handleSubmit(handleCreateRfq)} className="space-y-6">
              {/* 프로젝트 선택 */}
              <div className="space-y-4">
                <FormField
                  control={form.control}
                  name="biddingProjectId"
                  render={({ field }) => (
                    <FormItem>
                      <FormLabel>입찰 프로젝트</FormLabel>
                      <FormControl>
                        <EstimateProjectSelector
                          selectedProjectId={field.value}
                          onProjectSelect={handleProjectSelect}
                          placeholder="입찰 프로젝트를 선택하세요"
                        />
                      </FormControl>
                      <FormMessage />
                    </FormItem>
                  )}
                />
                
                <Separator className="my-4" />
                
                {/* 선종 선택 */}
                <div className="space-y-4">
                  <div>
                    <FormLabel>선종 선택</FormLabel>
                  </div>
                  
                  {/* 데이터 로딩 에러 표시 */}
                  {dataLoadError && (
                    <div className="p-3 bg-destructive/10 border border-destructive/20 rounded-md">
                      <div className="flex items-center justify-between">
                        <div className="flex items-center gap-2">
                          <X className="h-4 w-4 text-destructive" />
                          <span className="text-sm text-destructive">{dataLoadError}</span>
                        </div>
                        <Button
                          variant="outline"
                          size="sm"
                          onClick={handleRefreshData}
                          disabled={isLoadingItems}
                          className="h-8 text-xs"
                        >
                          {isLoadingItems ? (
                            <>
                              <Loader2 className="h-3 w-3 animate-spin mr-1" />
                              재시도 중...
                            </>
                          ) : (
                            "다시 시도"
                          )}
                        </Button>
                      </div>
                    </div>
                  )}
                  
                  <DropdownMenu>
                    <DropdownMenuTrigger asChild>
                      <Button 
                        variant="outline" 
                        className="w-full justify-between"
                        disabled={!selectedProject || isLoadingItems || dataLoadError !== null}
                      >
                        {isLoadingItems ? (
                          <>
                            <Loader2 className="h-4 w-4 animate-spin mr-2" />
                            데이터 로딩 중...
                          </>
                        ) : dataLoadError ? (
                          "데이터 로딩 실패"
                        ) : selectedShipType ? (
                          selectedShipType
                        ) : (
                          "전체조회: 선종을 선택해야 생성가능합니다."
                        )}
                        <ArrowUpDown className="ml-2 h-4 w-4 opacity-50" />
                      </Button>
                    </DropdownMenuTrigger>
                    <DropdownMenuContent className="w-full max-h-60 overflow-y-auto">
                      <DropdownMenuCheckboxItem
                        checked={selectedShipType === null}
                        onCheckedChange={() => {
                          setSelectedShipType(null)
                          setSelectedItems([])
                          form.setValue("materialCodes", [])
                        }}
                      >
                        전체 선종
                      </DropdownMenuCheckboxItem>
                      {availableShipTypes.map(shipType => (
                        <DropdownMenuCheckboxItem
                          key={shipType}
                          checked={selectedShipType === shipType}
                          onCheckedChange={() => {
                            setSelectedShipType(shipType)
                            setSelectedItems([])
                            form.setValue("materialCodes", [])
                          }}
                        >
                          {shipType}
                        </DropdownMenuCheckboxItem>
                      ))}
                    </DropdownMenuContent>
                  </DropdownMenu>
                </div>
                
                <Separator className="my-4" />
                
                {/* 마감일 설정 */}
                <FormField
                  control={form.control}
                  name="dueDate"
                  render={({ field }) => (
                    <FormItem className="flex flex-col">
                      <FormLabel>마감일</FormLabel>
                      <Popover>
                        <PopoverTrigger asChild>
                          <FormControl>
                            <Button
                              variant="outline"
                              className={cn(
                                "w-full pl-3 text-left font-normal",
                                !field.value && "text-muted-foreground"
                              )}
                            >
                              {field.value ? (
                                format(field.value, "PPP", { locale: ko })
                              ) : (
                                <span>마감일을 선택하세요</span>
                              )}
                              <CalendarIcon className="ml-auto h-4 w-4 opacity-50" />
                            </Button>
                          </FormControl>
                        </PopoverTrigger>
                        <PopoverContent className="w-auto p-0" align="start">
                          <Calendar
                            mode="single"
                            selected={field.value}
                            onSelect={field.onChange}
                            disabled={(date) =>
                              date < new Date() || date < new Date("1900-01-01")
                            }
                            initialFocus
                          />
                        </PopoverContent>
                      </Popover>
                      <FormMessage />
                    </FormItem>
                  )}
                />
                
                <Separator className="my-4" />
                
                <div className="space-y-6">
                  {/* 아이템 선택 영역 */}
                  <div className="space-y-4">
                    <div>
                      <FormLabel>조선 아이템 선택</FormLabel>
                      <FormDescription>
                        {selectedShipType ? `선종 ${selectedShipType}의 공종별 아이템을 선택하세요` : "먼저 선종을 선택해주세요"}
                      </FormDescription>
                    </div>
                    
                    {/* 아이템 검색 및 필터 */}
                    <div className="space-y-2">
                      <div className="flex space-x-2">
                        <div className="relative flex-1">
                          <Search className="absolute left-2 top-1/2 -translate-y-1/2 h-4 w-4 text-muted-foreground" />
                          <Input
                            placeholder="아이템 검색..."
                            value={itemSearchQuery}
                            onChange={(e) => setItemSearchQuery(e.target.value)}
                            className="pl-8 pr-8"
                            disabled={!selectedShipType || isLoadingItems || dataLoadError !== null}
                          />
                          {itemSearchQuery && (
                            <Button
                              variant="ghost"
                              size="sm"
                              className="absolute right-0 top-0 h-full px-3"
                              onClick={() => setItemSearchQuery("")}
                              disabled={!selectedShipType || isLoadingItems || dataLoadError !== null}
                            >
                              <X className="h-4 w-4" />
                            </Button>
                          )}
                        </div>
                        
                        {/* 공종 필터 */}
                        <DropdownMenu>
                          <DropdownMenuTrigger asChild>
                            <Button 
                              variant="outline" 
                              className="gap-1"
                              disabled={!selectedShipType || isLoadingItems || dataLoadError !== null}
                            >
                              {selectedWorkType ? workTypes.find(wt => wt.code === selectedWorkType)?.name : "전체 공종"}
                              <ArrowUpDown className="ml-2 h-4 w-4 opacity-50" />
                            </Button>
                          </DropdownMenuTrigger>
                          <DropdownMenuContent align="end">
                            <DropdownMenuCheckboxItem
                              checked={selectedWorkType === null}
                              onCheckedChange={() => setSelectedWorkType(null)}
                            >
                              전체 공종
                            </DropdownMenuCheckboxItem>
                            {workTypes.map(workType => (
                              <DropdownMenuCheckboxItem
                                key={workType.code}
                                checked={selectedWorkType === workType.code}
                                onCheckedChange={() => setSelectedWorkType(workType.code)}
                              >
                                {workType.name}
                              </DropdownMenuCheckboxItem>
                            ))}
                          </DropdownMenuContent>
                        </DropdownMenu>
                      </div>
                    </div>
                      
                    {/* 아이템 목록 */}
                    <div className="border rounded-md">
                      <ScrollArea className="h-[300px]">
                        <div className="p-2 space-y-1">
                          {dataLoadError ? (
                            <div className="text-center py-8">
                              <div className="p-4 bg-destructive/10 border border-destructive/20 rounded-md mx-4">
                                <div className="flex flex-col items-center gap-3">
                                  <X className="h-8 w-8 text-destructive" />
                                  <div className="text-center">
                                    <p className="text-sm text-destructive font-medium">데이터 로딩에 실패했습니다</p>
                                    <p className="text-xs text-muted-foreground mt-1">{dataLoadError}</p>
                                  </div>
                                  <Button
                                    variant="outline"
                                    size="sm"
                                    onClick={handleRefreshData}
                                    disabled={isLoadingItems}
                                    className="h-8"
                                  >
                                    {isLoadingItems ? (
                                      <>
                                        <Loader2 className="h-3 w-3 animate-spin mr-1" />
                                        재시도 중...
                                      </>
                                    ) : (
                                      "다시 시도"
                                    )}
                                  </Button>
                                </div>
                              </div>
                            </div>
                          ) : isLoadingItems ? (
                            <div className="text-center py-8 text-muted-foreground">
                              <Loader2 className="h-6 w-6 animate-spin mx-auto mb-2" />
                              아이템을 불러오는 중...
                              {retryCount > 0 && (
                                <p className="text-xs mt-1">재시도 {retryCount}회</p>
                              )}
                            </div>
                          ) : availableItems.length > 0 ? (
                            [...availableItems]
                              .sort((a, b) => {
                                // itemList 기준으로 정렬 (없는 경우 itemName 사용, 둘 다 없으면 맨 뒤로)
                                const aName = a.itemList || 'zzz'
                                const bName = b.itemList || 'zzz'
                                return aName.localeCompare(bName, 'ko', { numeric: true })
                              })
                              .map((item) => {
                                const isSelected = selectedItems.some(selected => selected.id === item.id)
                                return (
                                  <div
                                    key={item.id}
                                    className={cn(
                                      "flex items-center space-x-2 p-2 rounded-md cursor-pointer hover:bg-muted",
                                      isSelected && "bg-muted"
                                    )}
                                    onClick={() => handleItemToggle(item)}
                                  >
                                    <div className="flex items-center space-x-2 flex-1">
                                      {isSelected ? (
                                        <CheckSquare className="h-4 w-4" />
                                      ) : (
                                        <Square className="h-4 w-4" />
                                      )}
                                      <div className="flex-1">
                                        <div className="font-medium">
                                          {item.itemList || '아이템명 없음'}
                                        </div>
                                        <div className="text-sm text-muted-foreground">
                                          {item.itemCode || '자재그룹코드 없음'}
                                        </div>
                                        <div className="text-xs text-muted-foreground">
                                          공종: {item.workType} • 선종: {item.shipTypes}
                                        </div>
                                      </div>
                                    </div>
                                  </div>
                                )
                              })
                          ) : (
                            <div className="text-center py-8 text-muted-foreground">
                              {itemSearchQuery ? "검색 결과가 없습니다" : "아이템이 없습니다"}
                            </div>
                          )}
                        </div>
                      </ScrollArea>
                    </div>
                    
                    {/* 선택된 아이템 목록 */}
                    <FormField
                      control={form.control}
                      name="materialCodes"
                      render={() => (
                        <FormItem>
                          <FormLabel>선택된 아이템 ({selectedItems.length}개)</FormLabel>
                          <div className="min-h-[80px] p-3 border rounded-md bg-muted/50">
                            {selectedItems.length > 0 ? (
                              <div className="flex flex-wrap gap-2">
                                {selectedItems.map((item) => (
                                  <Badge
                                    key={item.id}
                                    variant="secondary"
                                    className="flex items-center gap-1"
                                  >
                                    {item.itemList || '아이템명 없음'} ({item.itemCode})
                                    <X
                                      className="h-3 w-3 cursor-pointer hover:text-destructive"
                                      onClick={() => handleRemoveItem(item.id)}
                                    />
                                  </Badge>
                                ))}
                              </div>
                            ) : (
                              <div className="flex items-center justify-center h-full text-sm text-muted-foreground">
                                선택된 아이템이 없습니다
                              </div>
                            )}
                          </div>
                          <FormMessage />
                        </FormItem>
                      )}
                    />

                    {/* RFQ 그룹핑 미리보기 */}
                    <div className="space-y-3">
                      <FormLabel>생성될 RFQ 그룹 미리보기</FormLabel>
                      <div className="border rounded-md bg-background">
                        {(() => {
                          // 아이템명(itemList)으로 그룹핑
                          const groupedItems = selectedItems.reduce((groups, item) => {
                            const actualItemName = item.itemList // 실제 조선 아이템명
                            if (!actualItemName) {
                              return groups // itemList가 없는 경우 제외
                            }
                            if (!groups[actualItemName]) {
                              groups[actualItemName] = []
                            }
                            groups[actualItemName].push(item)
                            return groups
                          }, {} as Record<string, typeof selectedItems>)

                          const rfqGroups = Object.entries(groupedItems).map(([actualItemName, items]) => {
                            const itemCodes = items.map(item => item.itemCode) // 자재그룹코드들
                            const joinedItemCodes = itemCodes.join(',')
                            return {
                              actualItemName,
                              items,
                              itemCodes,
                              joinedItemCodes,
                              codeLength: joinedItemCodes.length,
                              isOverLimit: joinedItemCodes.length > 255
                            }
                          })

                          return (
                            <div className="space-y-3">
                              <div className="text-sm text-muted-foreground p-3 border-b">
                                총 {rfqGroups.length}개의 RFQ가 생성됩니다 (아이템명별로 그룹핑)
                              </div>
                              <ScrollArea className="h-[200px]">
                                <Table>
                                  <TableHeader className="sticky top-0 bg-background">
                                    <TableRow>
                                      <TableHead className="w-[80px]">RFQ #</TableHead>
                                      <TableHead>아이템명</TableHead>
                                      <TableHead className="w-[120px]">자재그룹코드 개수</TableHead>
                                      <TableHead className="w-[100px]">길이</TableHead>
                                      <TableHead className="w-[80px]">상태</TableHead>
                                    </TableRow>
                                  </TableHeader>
                                  <TableBody>
                                    {rfqGroups.map((group, index) => (
                                      <TableRow 
                                        key={group.actualItemName}
                                        className={group.isOverLimit ? "bg-destructive/5" : ""}
                                      >
                                        <TableCell className="font-medium">#{index + 1}</TableCell>
                                        <TableCell>
                                          <div className="max-w-[200px] truncate" title={group.actualItemName}>
                                            {group.actualItemName}
                                          </div>
                                        </TableCell>
                                        <TableCell>{group.itemCodes.length}개</TableCell>
                                        <TableCell>
                                          <span className={group.isOverLimit ? "text-destructive font-medium" : ""}>
                                            {group.codeLength}/255자
                                          </span>
                                        </TableCell>
                                        <TableCell>
                                          {group.isOverLimit ? (
                                            <Badge variant="destructive" className="text-xs">초과</Badge>
                                          ) : (
                                            <Badge variant="secondary" className="text-xs">정상</Badge>
                                          )}
                                        </TableCell>
                                      </TableRow>
                                    ))}
                                  </TableBody>
                                </Table>
                              </ScrollArea>
                            </div>
                          )
                        })()}
                      </div>
                    </div>
                  </div>
                </div>
              </div>
            </form>
          </Form>
        </div>
        
        {/* Footer - Sticky 버튼 영역 */}
        <div className="sticky bottom-0 left-0 z-20 bg-background border-t pt-4 mt-4">
          <div className="flex justify-end space-x-2">
            <Button
              type="button"
              variant="outline"
              onClick={() => setIsDialogOpen(false)}
              disabled={isProcessing}
            >
              취소
            </Button>
            <Button 
              type="button"
              onClick={form.handleSubmit(handleCreateRfq)}
              disabled={
                isProcessing || 
                !selectedProject || 
                selectedItems.length === 0 ||
                // 255자 초과 그룹이 있는지 확인
                (() => {
                  const groupedItems = selectedItems.reduce((groups, item) => {
                    const actualItemName = item.itemList // 실제 조선 아이템명
                    if (!actualItemName) {
                      return groups // itemList가 없는 경우 제외
                    }
                    if (!groups[actualItemName]) {
                      groups[actualItemName] = []
                    }
                    groups[actualItemName].push(item.itemCode)
                    return groups
                  }, {} as Record<string, string[]>)
                  
                  return Object.values(groupedItems).some(itemCodes => itemCodes.join(',').length > 255)
                })()
              }
            >
              {isProcessing ? "처리 중..." : (() => {
                const groupedItems = selectedItems.reduce((groups, item) => {
                  const actualItemName = item.itemList // 실제 조선 아이템명
                  if (!actualItemName) {
                    return groups // itemList가 없는 경우 제외
                  }
                  if (!groups[actualItemName]) {
                    groups[actualItemName] = []
                  }
                  groups[actualItemName].push(item.itemCode)
                  return groups
                }, {} as Record<string, string[]>)
                
                const groupCount = Object.keys(groupedItems).length
                return `${groupCount}개 아이템 그룹으로 생성하기`
              })()}
            </Button>
          </div>
        </div>
      </DialogContent>
    </Dialog>
  )
}