"use client"

import * as React from "react"
import { type DataTableRowAction } from "@/types/table"
import { type ColumnDef } from "@tanstack/react-table"
import { InfoIcon } from "lucide-react"

import { formatDate } from "@/lib/utils"
import { Button } from "@/components/ui/button"
import {
  Tooltip,
  TooltipContent,
  TooltipProvider,
  TooltipTrigger,
} from "@/components/ui/tooltip"

import { DataTableColumnHeaderSimple } from "@/components/data-table/data-table-column-simple-header"
import { ViewTagSubfields } from "@/db/schema/vendorData"
import { tagNumberingColumnsConfig } from "@/config/tagNumberingColumnsConfig"

interface GetColumnsProps {
  setRowAction: React.Dispatch<React.SetStateAction<DataTableRowAction<ViewTagSubfields> | null>>
}

/**
 * tanstack table 컬럼 정의 (중첩 헤더 버전)
 */
export function getColumns({ setRowAction }: GetColumnsProps): ColumnDef<ViewTagSubfields>[] {
  // ----------------------------------------------------------------
  // 1) select 컬럼 (체크박스)
  // ----------------------------------------------------------------


  // ----------------------------------------------------------------
  // 2) actions 컬럼 (단일 버튼 - Meta Info 바로 보기)
  // ----------------------------------------------------------------
  const actionsColumn: ColumnDef<ViewTagSubfields> = {
    id: "actions",
    enableHiding: false,
    cell: function Cell({ row }) {
      return (
        <TooltipProvider>
          <Tooltip>
            <TooltipTrigger asChild>
              <Button
                variant="ghost"
                size="icon"
                onClick={() => setRowAction({ row, type: "items" })}
              >
                <InfoIcon className="h-4 w-4" aria-hidden="true" />
              </Button>
            </TooltipTrigger>
            <TooltipContent>
              View Option Info.
            </TooltipContent>
          </Tooltip>
        </TooltipProvider>
      )
    },
    size: 40,
  }

  // ----------------------------------------------------------------
  // 3) 일반 컬럼들을 "그룹"별로 묶어 중첩 columns 생성
  // ----------------------------------------------------------------
  // 3-1) groupMap: { [groupName]: ColumnDef<ViewTagSubfields>[] }
  const groupMap: Record<string, ColumnDef<ViewTagSubfields>[]> = {}

  tagNumberingColumnsConfig.forEach((cfg) => {
    // 만약 group가 없으면 "_noGroup" 처리
    const groupName = cfg.group || "_noGroup"

    if (!groupMap[groupName]) {
      groupMap[groupName] = []
    }

    // child column 정의
    const childCol: ColumnDef<ViewTagSubfields> = {
      accessorKey: cfg.id,
      enableResizing: true,
      header: ({ column }) => (
        <DataTableColumnHeaderSimple column={column} title={cfg.label} />
      ),
      meta: {
        excelHeader: cfg.excelHeader,
        group: cfg.group,
        type: cfg.type,
      },
      cell: ({ row, cell }) => {
 
        if (cfg.id === "createdAt"||cfg.id === "updatedAt") {
          const dateVal = cell.getValue() as Date
          return formatDate(dateVal, "KR")
        }

        return row.getValue(cfg.id) ?? ""
      },
    }

    groupMap[groupName].push(childCol)
  })

  // ----------------------------------------------------------------
  // 3-2) groupMap에서 실제 상위 컬럼(그룹)을 만들기
  // ----------------------------------------------------------------
  const nestedColumns: ColumnDef<ViewTagSubfields>[] = []

  // 순서를 고정하고 싶다면 group 순서를 미리 정의하거나 sort해야 함
  // 여기서는 그냥 Object.entries 순서
  Object.entries(groupMap).forEach(([groupName, colDefs]) => {
    if (groupName === "_noGroup") {
      // 그룹 없음 → 그냥 최상위 레벨 컬럼
      nestedColumns.push(...colDefs)
    } else {
      // 상위 컬럼
      nestedColumns.push({
        id: groupName,
        header: groupName, // "Basic Info", "Metadata" 등
        columns: colDefs,
      })
    }
  })

  // ----------------------------------------------------------------
  // 4) 최종 컬럼 배열: select, nestedColumns, actions
  // ----------------------------------------------------------------
  return [
    ...nestedColumns,
    actionsColumn,
  ]
}