"use client"

import { useState, useEffect, useTransition } from "react"
import { useRouter } from "next/navigation"
import { Button } from "@/components/ui/button"
import { Input } from "@/components/ui/input"
import {
  Table,
  TableBody,
  TableCell,
  TableHead,
  TableHeader,
  TableRow,
} from "@/components/ui/table"
import { Badge } from "@/components/ui/badge"
import { 
  Search, 
  Edit, 
  FileText, 
  ChevronUp, 
  ChevronDown, 
  Download
} from "lucide-react"
import { toast } from "sonner"
import { formatDate } from "@/lib/utils"
import { getInformationLists } from "@/lib/information/service"
import type { PageInformation } from "@/db/schema/information"
import { UpdateInformationDialog } from "@/lib/information/table/update-information-dialog"

interface InformationClientProps {
  initialData?: PageInformation[]
}

type SortField = "pageName" | "pagePath" | "createdAt"
type SortDirection = "asc" | "desc"

export function InformationClient({ initialData = [] }: InformationClientProps) {
  const router = useRouter()
  const [informations, setInformations] = useState<PageInformation[]>(initialData)
  const [loading, setLoading] = useState(false)
  const [searchQuery, setSearchQuery] = useState("")
  const [sortField, setSortField] = useState<SortField>("createdAt")
  const [sortDirection, setSortDirection] = useState<SortDirection>("desc")
  const [editingInformation, setEditingInformation] = useState<PageInformation | null>(null)
  const [isEditDialogOpen, setIsEditDialogOpen] = useState(false)
  const [, startTransition] = useTransition()

  // 정보 목록 조회
  const fetchInformations = async () => {
    try {
      setLoading(true)
      const search = searchQuery || undefined

      startTransition(async () => {
        const result = await getInformationLists({
          page: 1,
          perPage: 50,
          search: search,
          sort: [{ id: sortField, desc: sortDirection === "desc" }],
          flags: [],
          filters: [],
          joinOperator: "and",
          pagePath: "",
          pageName: "",
          informationContent: "",
          isActive: null,
        })

        if (result?.data) {
          setInformations(result.data)
        } else {
          toast.error("정보 목록을 가져오는데 실패했습니다.")
        }
        setLoading(false)
      })
    } catch (error) {
      console.error("Error fetching informations:", error)
      toast.error("정보 목록을 가져오는데 실패했습니다.")
      setLoading(false)
    }
  }

  // 검색 핸들러
  const handleSearch = () => {
    fetchInformations()
  }

  // 정렬 함수
  const sortInformations = (informations: PageInformation[]) => {
    return [...informations].sort((a, b) => {
      let aValue: string | Date
      let bValue: string | Date

      if (sortField === "pageName") {
        aValue = a.pageName
        bValue = b.pageName
      } else if (sortField === "pagePath") {
        aValue = a.pagePath
        bValue = b.pagePath
      } else {
        aValue = new Date(a.createdAt)
        bValue = new Date(b.createdAt)
      }

      if (aValue < bValue) {
        return sortDirection === "asc" ? -1 : 1
      }
      if (aValue > bValue) {
        return sortDirection === "asc" ? 1 : -1
      }
      return 0
    })
  }

  // 정렬 핸들러
  const handleSort = (field: SortField) => {
    if (sortField === field) {
      setSortDirection(sortDirection === "asc" ? "desc" : "asc")
    } else {
      setSortField(field)
      setSortDirection("asc")
    }
  }

  // 편집 핸들러
  const handleEdit = (information: PageInformation) => {
    setEditingInformation(information)
    setIsEditDialogOpen(true)
  }

  // 편집 완료 핸들러
  const handleEditClose = () => {
    setIsEditDialogOpen(false)
    setEditingInformation(null)
    // 데이터 새로고침
    fetchInformations()
  }

  // 다운로드 핸들러
  const handleDownload = (information: PageInformation) => {
    if (information.attachmentFilePath && information.attachmentFileName) {
      const link = document.createElement('a')
      link.href = information.attachmentFilePath
      link.download = information.attachmentFileName
      document.body.appendChild(link)
      link.click()
      document.body.removeChild(link)
    }
  }

  // 정렬된 정보 목록
  const sortedInformations = sortInformations(informations)

  useEffect(() => {
    if (initialData.length > 0) {
      setInformations(initialData)
    } else {
      fetchInformations()
    }
  }, [])

  useEffect(() => {
    if (searchQuery !== "") {
      fetchInformations()
    } else if (initialData.length > 0) {
      setInformations(initialData)
    }
  }, [searchQuery])

  return (
    <div className="space-y-6">
      {/* 검색 */}
      <div className="flex items-center justify-between gap-4">
        <div className="flex items-center gap-4">
          <div className="relative flex-1 max-w-md">
            <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400 h-4 w-4" />
            <Input
              placeholder="페이지명이나 경로로 검색..."
              value={searchQuery}
              onChange={(e) => setSearchQuery(e.target.value)}
              className="pl-10"
              onKeyPress={(e) => e.key === "Enter" && handleSearch()}
            />
          </div>
          <Button onClick={handleSearch} variant="outline">
            검색
          </Button>
          <Button
            variant="outline"
            onClick={() => router.refresh()}
          >
            새로고침
          </Button>
        </div>
      </div>

      {/* 정보 테이블 */}
      <div className="bg-white rounded-lg shadow">
        <Table>
          <TableHeader>
            <TableRow>
              <TableHead>
                <button
                  className="flex items-center gap-1 hover:text-foreground"
                  onClick={() => handleSort("pageName")}
                >
                  페이지명
                  {sortField === "pageName" && (
                    sortDirection === "asc" ? (
                      <ChevronUp className="h-4 w-4" />
                    ) : (
                      <ChevronDown className="h-4 w-4" />
                    )
                  )}
                </button>
              </TableHead>
              <TableHead>
                <button
                  className="flex items-center gap-1 hover:text-foreground"
                  onClick={() => handleSort("pagePath")}
                >
                  페이지 경로
                  {sortField === "pagePath" && (
                    sortDirection === "asc" ? (
                      <ChevronUp className="h-4 w-4" />
                    ) : (
                      <ChevronDown className="h-4 w-4" />
                    )
                  )}
                </button>
              </TableHead>
              <TableHead>정보 내용</TableHead>
              <TableHead>첨부파일</TableHead>
              <TableHead>상태</TableHead>
              <TableHead>
                <button
                  className="flex items-center gap-1 hover:text-foreground"
                  onClick={() => handleSort("createdAt")}
                >
                  생성일
                  {sortField === "createdAt" && (
                    sortDirection === "asc" ? (
                      <ChevronUp className="h-4 w-4" />
                    ) : (
                      <ChevronDown className="h-4 w-4" />
                    )
                  )}
                </button>
              </TableHead>
              <TableHead className="text-right">작업</TableHead>
            </TableRow>
          </TableHeader>
          <TableBody>
            {loading ? (
              <TableRow>
                <TableCell colSpan={7} className="text-center py-8">
                  로딩 중...
                </TableCell>
              </TableRow>
            ) : informations.length === 0 ? (
              <TableRow>
                <TableCell colSpan={7} className="text-center py-8 text-gray-500">
                  정보가 없습니다.
                </TableCell>
              </TableRow>
            ) : (
              sortedInformations.map((information) => (
                <TableRow key={information.id}>
                  <TableCell className="font-medium">
                    <div className="flex items-center gap-2">
                      <FileText className="h-4 w-4" />
                      <span className="max-w-[200px] truncate">
                        {information.pageName}
                      </span>
                    </div>
                  </TableCell>
                  <TableCell>
                    <span className="font-mono text-sm max-w-[200px] truncate block">
                      {information.pagePath}
                    </span>
                  </TableCell>
                  <TableCell>
                    <div 
                      className="max-w-[300px] text-sm text-gray-600 line-clamp-2"
                      dangerouslySetInnerHTML={{ 
                        __html: information.informationContent?.substring(0, 100) + '...' || '' 
                      }}
                    />
                  </TableCell>
                  <TableCell>
                    {information.attachmentFileName ? (
                      <Button
                        variant="outline"
                        size="sm"
                        onClick={() => handleDownload(information)}
                        className="flex items-center gap-1"
                      >
                        <Download className="h-3 w-3" />
                        <span className="max-w-[100px] truncate">
                          {information.attachmentFileName}
                        </span>
                      </Button>
                    ) : (
                      <span className="text-gray-400">없음</span>
                    )}
                  </TableCell>
                  <TableCell>
                    <Badge variant={information.isActive ? "default" : "secondary"}>
                      {information.isActive ? "활성" : "비활성"}
                    </Badge>
                  </TableCell>
                  <TableCell>
                    {formatDate(information.createdAt, "KR")}
                  </TableCell>
                  <TableCell className="text-right">
                    <Button 
                      variant="outline" 
                      size="sm"
                      onClick={() => handleEdit(information)}
                    >
                      <Edit className="h-4 w-4" />
                    </Button>
                  </TableCell>
                </TableRow>
              ))
            )}
          </TableBody>
        </Table>
      </div>

      {/* 편집 다이얼로그 */}
      {editingInformation && (
        <UpdateInformationDialog
          open={isEditDialogOpen}
          onOpenChange={setIsEditDialogOpen}
          information={editingInformation}
          onSuccess={handleEditClose}
        />
      )}
    </div>
  )
}