"use client"

import * as React from "react"
import { type DataTableRowAction } from "@/types/table"
import { type ColumnDef } from "@tanstack/react-table"
import { Download, MessageSquare } from "lucide-react"
import { toast } from "sonner"

import { formatDate } from "@/lib/utils"
import { Badge } from "@/components/ui/badge"
import { Button } from "@/components/ui/button"
import { Checkbox } from "@/components/ui/checkbox"

import { DataTableColumnHeaderSimple } from "@/components/data-table/data-table-column-simple-header"
import { useRouter } from "next/navigation"

import {
  
  vendorTbeColumnsConfig,
  VendorWithTbeFields,
} from "@/config/vendorTbeColumnsConfig"

type NextRouter = ReturnType<typeof useRouter>

interface GetColumnsProps {
  setRowAction: React.Dispatch<React.SetStateAction<DataTableRowAction<VendorWithTbeFields> | null>>
  router: NextRouter
  openCommentSheet: (vendorId: number, rfqId: number) => void
  openFilesDialog: (tbeId: number, vendorId: number, rfqId: number) => void
  openVendorContactsDialog: (vendorId: number, vendor: VendorWithTbeFields) => void // 수정된 시그니처

}


/**
 * tanstack table 컬럼 정의 (중첩 헤더 버전)
 */
export function getColumns({
  setRowAction,
  router,
  openCommentSheet,
  openFilesDialog,
  openVendorContactsDialog
}: GetColumnsProps): ColumnDef<VendorWithTbeFields>[] {
  // ----------------------------------------------------------------
  // 1) Select 컬럼 (체크박스)
  // ----------------------------------------------------------------
  const selectColumn: ColumnDef<VendorWithTbeFields> = {
    id: "select",
    header: ({ table }) => (
      <Checkbox
        checked={
          table.getIsAllPageRowsSelected() ||
          (table.getIsSomePageRowsSelected() && "indeterminate")
        }
        onCheckedChange={(value) => table.toggleAllPageRowsSelected(!!value)}
        aria-label="Select all"
        className="translate-y-0.5"
      />
    ),
    cell: ({ row }) => (
      <Checkbox
        checked={row.getIsSelected()}
        onCheckedChange={(value) => row.toggleSelected(!!value)}
        aria-label="Select row"
        className="translate-y-0.5"
      />
    ),
    size: 40,
    enableSorting: false,
    enableHiding: false,
  }

  // ----------------------------------------------------------------
  // 2) 그룹화(Nested) 컬럼 구성
  // ----------------------------------------------------------------
  const groupMap: Record<string, ColumnDef<VendorWithTbeFields>[]> = {}

  vendorTbeColumnsConfig.forEach((cfg) => {
    const groupName = cfg.group || "_noGroup"
    if (!groupMap[groupName]) {
      groupMap[groupName] = []
    }

    // childCol: ColumnDef<VendorWithTbeFields>
    const childCol: ColumnDef<VendorWithTbeFields> = {
      accessorKey: cfg.id,
      enableResizing: true,
      header: ({ column }) => (
        <DataTableColumnHeaderSimple column={column} title={cfg.label} />
      ),
      meta: {
        excelHeader: cfg.excelHeader,
        group: cfg.group,
        type: cfg.type,
      },
      // 셀 렌더링
      cell: ({ row, getValue }) => {
        // 1) 필드값 가져오기
        const val = getValue()
        
        if (cfg.id === "vendorName") {
          const vendor = row.original;
          const vendorId = vendor.vendorId;
          
          // 협력업체 이름을 클릭할 수 있는 버튼으로 렌더링
          const handleVendorNameClick = () => {
            if (vendorId) {
              openVendorContactsDialog(vendorId, vendor); // vendor 전체 객체 전달
            } else {
              toast.error("협력업체 ID를 찾을 수 없습니다.");
            }
          };
          
          return (
            <Button
              variant="link"
              className="p-0 h-auto text-left font-normal justify-start hover:underline"
              onClick={handleVendorNameClick}
            >
              {val as string}
            </Button>
          );
        }
        if (cfg.id === "tbeResult") {
          const vendor = row.original;
          const tbeResult = vendor.tbeResult;
          const filesCount = vendor.files?.length ?? 0;
          
          // Only show button or link if there are files
          if (filesCount > 0) {
            // Function to handle clicking on the result
            const handleTbeResultClick = () => {
              setRowAction({ row, type: "tbeResult" });
            };
            
            if (!tbeResult) {
              // No result yet, but files exist - show "결과 입력" button
              return (
                <Button
                  variant="outline"
                  size="sm"
                  onClick={handleTbeResultClick}
                >
                  결과 입력
                </Button>
              );
            } else {
              // Result exists - show as a hyperlink
              let badgeVariant: "default" | "outline" | "destructive" | "secondary" = "outline";
              
              // Set badge variant based on result
              if (tbeResult === "pass") {
                badgeVariant = "default";
              } else if (tbeResult === "non-pass") {
                badgeVariant = "destructive";
              } else if (tbeResult === "conditional pass") {
                badgeVariant = "secondary";
              }
              
              return (
                <Button
                  variant="link"
                  className="p-0 h-auto underline"
                  onClick={handleTbeResultClick}
                >
                  <Badge variant={badgeVariant}>
                    {tbeResult}
                  </Badge>
                </Button>
              );
            }
          }
          
          // No files available, return empty cell
          return null;
        }


        if (cfg.id === "vendorStatus") {
          const statusVal = row.original.vendorStatus
          if (!statusVal) return null
          // const Icon = getStatusIcon(statusVal)
          return (
            <Badge variant="outline">
              {statusVal}
            </Badge>
          )
        }


        if (cfg.id === "rfqVendorStatus") {
          const statusVal = row.original.rfqVendorStatus
          if (!statusVal) return null
          // const Icon = getStatusIcon(statusVal)
          const variant = statusVal ==="INVITED"?"default" :statusVal ==="DECLINED"?"destructive":statusVal ==="ACCEPTED"?"secondary":"outline"
          return (
            <Badge variant={variant}>
              {statusVal}
            </Badge>
          )
        }

        // 예) TBE Updated (날짜)
        if (cfg.id === "tbeUpdated") {
          const dateVal = val as Date | undefined
          if (!dateVal) return null
          return formatDate(dateVal)
        }

        // 그 외 필드는 기본 값 표시
        return val ?? ""
      },
    }

    groupMap[groupName].push(childCol)
  })

  // groupMap → nestedColumns
  const nestedColumns: ColumnDef<VendorWithTbeFields>[] = []
  Object.entries(groupMap).forEach(([groupName, colDefs]) => {
    if (groupName === "_noGroup") {
      nestedColumns.push(...colDefs)
    } else {
      nestedColumns.push({
        id: groupName,
        header: groupName,
        columns: colDefs,
      })
    }
  })
// 파일 칼럼
const filesColumn: ColumnDef<VendorWithTbeFields> = {
  id: "files",
  header: ({ column }) => (
    <DataTableColumnHeaderSimple column={column} title="Response Files" />
  ),
  cell: ({ row }) => {
    const vendor = row.original
    const filesCount = vendor.files?.length ?? 0

    function handleClick() {
      // setRowAction으로 타입만 설정하고 끝내는 방법도 가능하지만
      // 혹은 바로 openFilesDialog()를 호출해도 됨.
      setRowAction({ row, type: "files" })
      // 필요한 값을 직접 호출해서 넘겨줄 수도 있음.
      openFilesDialog(
        vendor.tbeId ?? 0,
        vendor.vendorId ?? 0,
        vendor.rfqId ?? 0,
      )
    }

    return (
      <Button
        variant="ghost"
        size="sm"
        className="relative h-8 w-8 p-0 group"
        onClick={handleClick}
        aria-label={filesCount > 0 ? `View ${filesCount} files` : "Upload file"}
      >
        <Download className="h-4 w-4" />
        {filesCount > 0 && (
          <Badge variant="secondary" className="absolute -top-1 -right-1 h-4 min-w-[1rem] p-0 text-[0.625rem] leading-none flex items-center justify-center">
            {filesCount}
          </Badge>
        )}
      </Button>
    )
  },
  enableSorting: false,
  minSize: 80,
}
  // ----------------------------------------------------------------
  // 2) 액션컬럼 (빈 상태로 유지하여 에러 방지)
  // ----------------------------------------------------------------
  const actionsColumn: ColumnDef<VendorWithTbeFields> = {
    id: "actions",
    enableHiding: false,
    cell: () => {
      // 빈 셀 반환 (액션 없음)
      return null
    },
    size: 0,
    enableSorting: false,
  }

// 댓글 칼럼
const commentsColumn: ColumnDef<VendorWithTbeFields> = {
  id: "comments",
  header: ({ column }) => (
    <DataTableColumnHeaderSimple column={column} title="Comments" />
  ),
  cell: ({ row }) => {
    const vendor = row.original
    const commCount = vendor.comments?.filter(c => c.evaluationId === vendor.tbeId)?.length ?? 0

    function handleClick() {
      // setRowAction() 로 type 설정
      setRowAction({ row, type: "comments" })
      // 필요하면 즉시 openCommentSheet() 직접 호출
      openCommentSheet(
        vendor.vendorId ?? 0,
        vendor.rfqId ?? 0,
      )
    }

    return (
      <Button
        variant="ghost"
        size="sm"
        className="relative h-8 w-8 p-0 group"
        onClick={handleClick}
        aria-label={
          commCount > 0 ? `View ${commCount} comments` : "No comments"
        }
      >
        <MessageSquare className="h-4 w-4 text-muted-foreground group-hover:text-primary transition-colors" />
        {commCount > 0 && (
          <Badge
            variant="secondary"
            className="pointer-events-none absolute -top-1 -right-1 h-4 min-w-[1rem] p-0 text-[0.625rem] leading-none flex items-center justify-center"
          >
            {commCount}
          </Badge>
        )}
        <span className="sr-only">
          {commCount > 0 ? `${commCount} Comments` : "No Comments"}
        </span>
      </Button>
    )
  },
  enableSorting: false,
  minSize: 80,
}
// ----------------------------------------------------------------
// 5) 최종 컬럼 배열 - Update to include the files column
// ----------------------------------------------------------------
return [
  selectColumn,
  ...nestedColumns,
  filesColumn,  // Add the files column before comments
  commentsColumn,
  actionsColumn,
]

}