"use client"

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

import { getErrorMessage } from "@/lib/handle-error"
import { formatDate } from "@/lib/utils"
import { Badge } from "@/components/ui/badge"
import { Button } from "@/components/ui/button"
import { Checkbox } from "@/components/ui/checkbox"
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuRadioGroup,
  DropdownMenuRadioItem,
  DropdownMenuSub,
  DropdownMenuSubContent,
  DropdownMenuSubTrigger,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu"
import { DataTableColumnHeaderSimple } from "@/components/data-table/data-table-column-simple-header"
import { useRouter } from "next/navigation"

import {
  VendorTbeColumnConfig,
  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) => void
  openFilesDialog: (tbeId:number , vendorId: number) => void
}

/**
 * tanstack table 컬럼 정의 (중첩 헤더 버전)
 */
export function getColumns({
  setRowAction,
  router,
  openCommentSheet,
  openFilesDialog
}: 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 === "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,
      })
    }
  })

// ----------------------------------------------------------------
// 3) Comments 컬럼
// ----------------------------------------------------------------
const commentsColumn: ColumnDef<VendorWithTbeFields> = {
  id: "comments",
  header: ({ column }) => (
    <DataTableColumnHeaderSimple column={column} title="Comments" />
  ),
  cell: ({ row }) => {
    const vendor = row.original
    const commCount = vendor.comments?.length ?? 0

    function handleClick() {
      // rowAction + openCommentSheet
      setRowAction({ row, type: "comments" })
      openCommentSheet(vendor.tbeId ?? 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,
  maxSize:80
}

  // ----------------------------------------------------------------
  // 4) Actions 컬럼 (예: 초대하기 버튼)
  // ----------------------------------------------------------------
  // const actionsColumn: ColumnDef<VendorWithTbeFields> = {
  //   id: "actions",
  //   cell: ({ row }) => {
  //     const status = row.original.tbeResult
  //     // 예: 만약 tbeResult가 없을 때만 초대하기 버튼 표시
  //     if (status) {
  //       return null
  //     }

  //     return (
  //       <Button
  //         onClick={() => setRowAction({ row, type: "invite" })}
  //         size="sm"
  //         variant="outline"
  //       >
  //         발행하기
  //       </Button>
  //     )
  //   },
  //   size: 80,
  //   enableSorting: false,
  //   enableHiding: false,
  // }
// ----------------------------------------------------------------
// 3) Files Column - Add before Comments column
// ----------------------------------------------------------------
const filesColumn: ColumnDef<VendorWithTbeFields> = {
  id: "files",
  header: ({ column }) => (
    <DataTableColumnHeaderSimple column={column} title="Response Files" />
  ),
  cell: ({ row }) => {
    const vendor = row.original
    // We'll assume that files count will be populated from the backend
    // You'll need to modify your getTBE function to include files 
    const filesCount = vendor.files?.length ?? 0

    function handleClick() {
      // Open files dialog
      setRowAction({ row, type: "files" })
      openFilesDialog(vendor.tbeId ?? 0, vendor.vendorId ?? 0)
    }

    return (
      <div className="flex items-center justify-center">
<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"}
>
  {/* 아이콘: 중앙 정렬을 위해 Button 자체가 flex container */}
  <Download className="h-4 w-4 text-muted-foreground group-hover:text-primary transition-colors" />

  {/* 파일 개수가 1개 이상이면 뱃지 표시 */}
  {filesCount > 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"
    >
      {filesCount}
    </Badge>
  )}

  <span className="sr-only">
    {filesCount > 0 ? `${filesCount} Files` : "Upload File"}
  </span>
</Button>
      </div>
    )
  },
  enableSorting: false,
  maxSize: 80
}

// ----------------------------------------------------------------
// 5) 최종 컬럼 배열 - Update to include the files column
// ----------------------------------------------------------------
return [
  selectColumn,
  ...nestedColumns,
  filesColumn,  // Add the files column before comments
  commentsColumn,
  // actionsColumn,
]

}