ERP-node/frontend/components/v2/V2Select.tsx

"use client";

/**
 * V2Select
 * 
 * 통합 선택 컴포넌트
 * - dropdown: 드롭다운 선택
 * - radio: 라디오 버튼 그룹
 * - check: 체크박스 그룹
 * - tag: 태그 선택
 * - toggle: 토글 스위치
 * - swap: 스왑 선택 (좌우 이동)
 */

import React, { forwardRef, useCallback, useContext, useEffect, useMemo, useState } from "react";
import { Label } from "@/components/ui/label";
import { RadioGroup, RadioGroupItem } from "@/components/ui/radio-group";
import { Checkbox } from "@/components/ui/checkbox";
import { Switch } from "@/components/ui/switch";
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import { Command, CommandEmpty, CommandGroup, CommandInput, CommandItem, CommandList } from "@/components/ui/command";
import { Popover, PopoverContent, PopoverTrigger } from "@/components/ui/popover";
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
import { cn } from "@/lib/utils";
import { V2SelectProps, SelectOption, V2SelectFilter } from "@/types/v2-components";
import { Check, ChevronsUpDown, X, ArrowLeftRight } from "lucide-react";
import { apiClient } from "@/lib/api/client";
import V2FormContext from "./V2FormContext";

/**
 * 드롭다운 선택 컴포넌트
 */
const DropdownSelect = forwardRef<HTMLButtonElement, {
  options: SelectOption[];
  value?: string | string[];
  onChange?: (value: string | string[]) => void;
  placeholder?: string;
  searchable?: boolean;
  multiple?: boolean;
  maxSelect?: number;
  allowClear?: boolean;
  disabled?: boolean;
  className?: string;
  style?: React.CSSProperties;
}>(({ 
  options, 
  value, 
  onChange, 
  placeholder = "선택", 
  searchable, 
  multiple, 
  maxSelect,
  allowClear = true,
  disabled, 
  className,
  style,
}, ref) => {
  const [open, setOpen] = useState(false);

  // 현재 선택된 값 존재 여부
  const hasValue = useMemo(() => {
    if (!value) return false;
    if (Array.isArray(value)) return value.length > 0;
    return value !== "";
  }, [value]);

  // 단일 선택 + 검색 불가능 → 기본 Select 사용
  if (!searchable && !multiple) {
    return (
      <div className="relative w-full group">
        <Select
          value={typeof value === "string" ? value : value?.[0] ?? ""}
          onValueChange={(v) => onChange?.(v)}
          disabled={disabled}
        >
          {/* SelectTrigger에 style로 직접 height 전달 (Radix Select.Root는 DOM 없어서 h-full 체인 끊김) */}
          <SelectTrigger ref={ref} className={cn("w-full", allowClear && hasValue ? "pr-8" : "", className)} style={style}>
            <SelectValue placeholder={placeholder} />
          </SelectTrigger>
          <SelectContent>
            {options
              .filter((option) => option.value != null && option.value !== "")
              .map((option) => (
                <SelectItem key={option.value} value={option.value}>
                  {option.label}
                </SelectItem>
              ))}
          </SelectContent>
        </Select>
        {/* 초기화 버튼 (값이 있을 때만 표시) */}
        {allowClear && hasValue && !disabled && (
          <span
            role="button"
            tabIndex={-1}
            className="absolute right-7 top-1/2 -translate-y-1/2 z-10 cursor-pointer"
            onClick={(e) => {
              e.stopPropagation();
              e.preventDefault();
              onChange?.("");
            }}
            onPointerDown={(e) => {
              e.stopPropagation();
              e.preventDefault();
            }}
          >
            <X className="h-3.5 w-3.5 opacity-40 hover:opacity-100 transition-opacity" />
          </span>
        )}
      </div>
    );
  }

  // 검색 가능 또는 다중 선택 → Combobox 사용
  // null/undefined value를 가진 옵션 필터링 (cmdk가 value={null}일 때 크래시 발생)
  const safeOptions = useMemo(() => 
    options.filter((o) => o.value != null && o.value !== ""),
    [options]
  );

  const selectedValues = useMemo(() => {
    if (!value) return [];
    return Array.isArray(value) ? value : [value];
  }, [value]);

  const selectedLabels = useMemo(() => {
    return selectedValues
      .map((v) => safeOptions.find((o) => o.value === v)?.label)
      .filter(Boolean) as string[];
  }, [selectedValues, safeOptions]);

  const handleSelect = useCallback((selectedValue: string) => {
    if (multiple) {
      const newValues = selectedValues.includes(selectedValue)
        ? selectedValues.filter((v) => v !== selectedValue)
        : maxSelect && selectedValues.length >= maxSelect
          ? selectedValues
          : [...selectedValues, selectedValue];
      onChange?.(newValues);
    } else {
      onChange?.(selectedValue);
      setOpen(false);
    }
  }, [multiple, selectedValues, maxSelect, onChange]);

  const handleClear = useCallback((e: React.MouseEvent) => {
    e.stopPropagation();
    onChange?.(multiple ? [] : "");
  }, [multiple, onChange]);

  return (
    <Popover open={open} onOpenChange={setOpen}>
      <PopoverTrigger asChild>
        {/* Button에 style로 직접 height 전달 (Popover도 DOM 체인 끊김) */}
        <Button
          ref={ref}
          variant="outline"
          role="combobox"
          aria-expanded={open}
          disabled={disabled}
          className={cn(
            "w-full justify-between font-normal",
            "bg-transparent hover:bg-transparent", // 표준 Select와 동일한 투명 배경
            "border-input shadow-xs", // 표준 Select와 동일한 테두리
            "h-6 px-2 py-0 text-sm", // 표준 Select xs와 동일한 높이
            className,
          )}
          style={style}
        >
          <span className="truncate flex-1 text-left">
            {selectedLabels.length > 0
              ? multiple 
                ? `${selectedLabels.length}개 선택됨`
                : selectedLabels[0]
              : placeholder}
          </span>
          <div className="flex items-center gap-1 ml-2">
            {allowClear && selectedValues.length > 0 && (
              <span
                role="button"
                tabIndex={-1}
                onClick={handleClear}
                onPointerDown={(e) => {
                  // Radix Popover가 onPointerDown으로 팝오버를 여는 것을 방지
                  e.stopPropagation();
                  e.preventDefault();
                }}
              >
                <X className="h-4 w-4 opacity-50 hover:opacity-100" />
              </span>
            )}
            <ChevronsUpDown className="h-4 w-4 shrink-0 opacity-50" />
          </div>
        </Button>
      </PopoverTrigger>
      <PopoverContent className="p-0" style={{ width: "var(--radix-popover-trigger-width)" }} align="start">
        <Command
          filter={(itemValue, search) => {
            if (!search) return 1;
            const option = safeOptions.find((o) => o.value === itemValue);
            const label = (option?.label || option?.value || "").toLowerCase();
            if (label.includes(search.toLowerCase())) return 1;
            return 0;
          }}
        >
          {searchable && <CommandInput placeholder="검색..." className="h-9" />}
          <CommandList>
            <CommandEmpty>검색 결과가 없습니다.</CommandEmpty>
            <CommandGroup>
              {safeOptions.map((option) => {
                const displayLabel = option.label || option.value || "(빈 값)";
                return (
                  <CommandItem
                    key={option.value}
                    value={option.value}
                    onSelect={() => handleSelect(option.value)}
                  >
                    <Check
                      className={cn(
                        "mr-2 h-4 w-4",
                        selectedValues.includes(option.value) ? "opacity-100" : "opacity-0"
                      )}
                    />
                    {displayLabel}
                  </CommandItem>
                );
              })}
            </CommandGroup>
          </CommandList>
        </Command>
      </PopoverContent>
    </Popover>
  );
});
DropdownSelect.displayName = "DropdownSelect";

/**
 * 라디오 선택 컴포넌트
 */
const RadioSelect = forwardRef<HTMLDivElement, {
  options: SelectOption[];
  value?: string;
  onChange?: (value: string) => void;
  disabled?: boolean;
  className?: string;
}>(({ options, value, onChange, disabled, className }, ref) => {
  return (
    <RadioGroup
      ref={ref}
      value={value ?? ""}
      onValueChange={onChange}
      disabled={disabled}
      className={cn("flex flex-wrap gap-4", className)}
    >
      {options.map((option) => (
        <div key={option.value} className="flex items-center space-x-2">
          <RadioGroupItem value={option.value} id={`radio-${option.value}`} />
          <Label htmlFor={`radio-${option.value}`} className="text-sm cursor-pointer">
            {option.label}
          </Label>
        </div>
      ))}
    </RadioGroup>
  );
});
RadioSelect.displayName = "RadioSelect";

/**
 * 체크박스 선택 컴포넌트
 */
const CheckSelect = forwardRef<HTMLDivElement, {
  options: SelectOption[];
  value?: string[];
  onChange?: (value: string[]) => void;
  maxSelect?: number;
  disabled?: boolean;
  className?: string;
}>(({ options, value = [], onChange, maxSelect, disabled, className }, ref) => {
  const handleChange = useCallback((optionValue: string, checked: boolean) => {
    if (checked) {
      if (maxSelect && value.length >= maxSelect) return;
      onChange?.([...value, optionValue]);
    } else {
      onChange?.(value.filter((v) => v !== optionValue));
    }
  }, [value, maxSelect, onChange]);

  return (
    <div ref={ref} className={cn("flex flex-wrap gap-4", className)}>
      {options.map((option) => (
        <div key={option.value} className="flex items-center space-x-2">
          <Checkbox
            id={`check-${option.value}`}
            checked={value.includes(option.value)}
            onCheckedChange={(checked) => handleChange(option.value, checked as boolean)}
            disabled={disabled || (maxSelect && value.length >= maxSelect && !value.includes(option.value))}
          />
          <Label htmlFor={`check-${option.value}`} className="text-sm cursor-pointer">
            {option.label}
          </Label>
        </div>
      ))}
    </div>
  );
});
CheckSelect.displayName = "CheckSelect";

/**
 * 태그 선택 컴포넌트
 */
const TagSelect = forwardRef<HTMLDivElement, {
  options: SelectOption[];
  value?: string[];
  onChange?: (value: string[]) => void;
  maxSelect?: number;
  disabled?: boolean;
  className?: string;
}>(({ options, value = [], onChange, maxSelect, disabled, className }, ref) => {
  const handleToggle = useCallback((optionValue: string) => {
    const isSelected = value.includes(optionValue);
    if (isSelected) {
      onChange?.(value.filter((v) => v !== optionValue));
    } else {
      if (maxSelect && value.length >= maxSelect) return;
      onChange?.([...value, optionValue]);
    }
  }, [value, maxSelect, onChange]);

  return (
    <div ref={ref} className={cn("flex flex-wrap gap-2", className)}>
      {options.map((option) => {
        const isSelected = value.includes(option.value);
        return (
          <Badge
            key={option.value}
            variant={isSelected ? "default" : "outline"}
            className={cn(
              "cursor-pointer transition-colors",
              disabled && "opacity-50 cursor-not-allowed"
            )}
            onClick={() => !disabled && handleToggle(option.value)}
          >
            {option.label}
            {isSelected && <X className="ml-1 h-3 w-3" />}
          </Badge>
        );
      })}
    </div>
  );
});
TagSelect.displayName = "TagSelect";

/**
 * 태그박스 선택 컴포넌트 (태그 형태 + 체크박스 드롭다운)
 * - 선택된 값들이 태그(Badge)로 표시됨
 * - 클릭하면 체크박스 목록이 드롭다운으로 열림
 */
const TagboxSelect = forwardRef<HTMLDivElement, {
  options: SelectOption[];
  value?: string[];
  onChange?: (value: string[]) => void;
  placeholder?: string;
  maxSelect?: number;
  disabled?: boolean;
  className?: string;
  style?: React.CSSProperties;
}>(({ options, value = [], onChange, placeholder = "선택하세요", maxSelect, disabled, className, style }, ref) => {
  const [open, setOpen] = useState(false);

  // 선택된 옵션들의 라벨 가져오기
  const selectedOptions = useMemo(() => 
    options.filter((o) => value.includes(o.value)),
    [options, value]
  );

  // 체크박스 토글 핸들러
  const handleToggle = useCallback((optionValue: string) => {
    const isSelected = value.includes(optionValue);
    if (isSelected) {
      onChange?.(value.filter((v) => v !== optionValue));
    } else {
      if (maxSelect && value.length >= maxSelect) return;
      onChange?.([...value, optionValue]);
    }
  }, [value, maxSelect, onChange]);

  // 태그 제거 핸들러
  const handleRemove = useCallback((e: React.MouseEvent, optionValue: string) => {
    e.stopPropagation();
    onChange?.(value.filter((v) => v !== optionValue));
  }, [value, onChange]);

  // 🔧 높이 처리: style.height가 있으면 minHeight로 사용 (기본 40px 보장)
  const triggerStyle: React.CSSProperties = {
    minHeight: style?.height || 40,
    height: style?.height || "auto",
    maxWidth: "100%", // 🔧 부모 컨테이너를 넘지 않도록
  };

  return (
    <div ref={ref} className={cn("w-full max-w-full overflow-hidden", className)} style={{ width: style?.width }}>
      <Popover open={open} onOpenChange={setOpen}>
        <PopoverTrigger asChild>
          <div
            className={cn(
              "flex w-full max-w-full flex-wrap items-center gap-1.5 rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background cursor-pointer overflow-hidden",
              "hover:border-primary/50 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2",
              disabled && "opacity-50 cursor-not-allowed"
            )}
            style={triggerStyle}
          >
            {selectedOptions.length > 0 ? (
              <>
                {selectedOptions.map((option) => (
                  <Badge
                    key={option.value}
                    variant="secondary"
                    className="flex items-center gap-1 px-2 py-0.5"
                  >
                    {option.label}
                    <X
                      className="h-3 w-3 cursor-pointer hover:text-destructive"
                      onClick={(e) => !disabled && handleRemove(e, option.value)}
                    />
                  </Badge>
                ))}
              </>
            ) : (
              <span className="text-muted-foreground">{placeholder}</span>
            )}
            <ChevronsUpDown className="ml-auto h-4 w-4 shrink-0 opacity-50" />
          </div>
        </PopoverTrigger>
        <PopoverContent 
          className="p-0" 
          style={{ width: "var(--radix-popover-trigger-width)" }} 
          align="start"
        >
          <div className="max-h-[300px] overflow-auto p-2">
            {options.map((option) => {
              const isSelected = value.includes(option.value);
              return (
                <div
                  key={option.value}
                  className={cn(
                    "flex items-center gap-2 rounded-sm px-2 py-1.5 text-sm cursor-pointer",
                    "hover:bg-accent hover:text-accent-foreground",
                    isSelected && "bg-accent/50"
                  )}
                  onClick={() => !disabled && handleToggle(option.value)}
                >
                  <Checkbox
                    checked={isSelected}
                    disabled={disabled}
                    className="pointer-events-none"
                  />
                  <span>{option.label}</span>
                </div>
              );
            })}
            {options.length === 0 && (
              <div className="py-2 text-center text-sm text-muted-foreground">
                옵션이 없습니다
              </div>
            )}
          </div>
        </PopoverContent>
      </Popover>
    </div>
  );
});
TagboxSelect.displayName = "TagboxSelect";

/**
 * 토글 선택 컴포넌트 (Boolean용)
 */
const ToggleSelect = forwardRef<HTMLDivElement, {
  options: SelectOption[];
  value?: string;
  onChange?: (value: string) => void;
  disabled?: boolean;
  className?: string;
}>(({ options, value, onChange, disabled, className }, ref) => {
  // 토글은 2개 옵션만 지원
  const [offOption, onOption] = options.length >= 2 
    ? [options[0], options[1]] 
    : [{ value: "false", label: "아니오" }, { value: "true", label: "예" }];

  const isOn = value === onOption.value;

  return (
    <div ref={ref} className={cn("flex items-center gap-3", className)}>
      <span className={cn("text-sm", !isOn && "font-medium")}>{offOption.label}</span>
      <Switch
        checked={isOn}
        onCheckedChange={(checked) => onChange?.(checked ? onOption.value : offOption.value)}
        disabled={disabled}
      />
      <span className={cn("text-sm", isOn && "font-medium")}>{onOption.label}</span>
    </div>
  );
});
ToggleSelect.displayName = "ToggleSelect";

/**
 * 스왑 선택 컴포넌트 (좌우 이동 방식)
 */
const SwapSelect = forwardRef<HTMLDivElement, {
  options: SelectOption[];
  value?: string[];
  onChange?: (value: string[]) => void;
  maxSelect?: number;
  disabled?: boolean;
  className?: string;
}>(({ options, value = [], onChange, disabled, className }, ref) => {
  const available = useMemo(() => 
    options.filter((o) => !value.includes(o.value)),
    [options, value]
  );

  const selected = useMemo(() => 
    options.filter((o) => value.includes(o.value)),
    [options, value]
  );

  const handleMoveRight = useCallback((optionValue: string) => {
    onChange?.([...value, optionValue]);
  }, [value, onChange]);

  const handleMoveLeft = useCallback((optionValue: string) => {
    onChange?.(value.filter((v) => v !== optionValue));
  }, [value, onChange]);

  const handleMoveAllRight = useCallback(() => {
    onChange?.(options.map((o) => o.value));
  }, [options, onChange]);

  const handleMoveAllLeft = useCallback(() => {
    onChange?.([]);
  }, [onChange]);

  return (
    <div ref={ref} className={cn("flex gap-2 items-stretch", className)}>
      {/* 왼쪽: 선택 가능 */}
      <div className="flex-1 border rounded-md flex flex-col min-h-0">
        <div className="p-2 bg-muted text-xs font-medium border-b shrink-0">선택 가능</div>
        <div className="p-2 space-y-1 flex-1 overflow-y-auto min-h-0">
          {available.map((option) => (
            <div
              key={option.value}
              className={cn(
                "p-2 text-sm rounded cursor-pointer hover:bg-accent",
                disabled && "opacity-50 cursor-not-allowed"
              )}
              onClick={() => !disabled && handleMoveRight(option.value)}
            >
              {option.label}
            </div>
          ))}
          {available.length === 0 && (
            <div className="text-xs text-muted-foreground p-2">항목 없음</div>
          )}
        </div>
      </div>

      {/* 중앙: 이동 버튼 */}
      <div className="flex flex-col gap-1 justify-center">
        <Button 
          variant="outline" 
          size="icon" 
          className="h-8 w-8"
          onClick={handleMoveAllRight}
          disabled={disabled || available.length === 0}
        >
          <ArrowLeftRight className="h-4 w-4 rotate-180" />
        </Button>
        <Button 
          variant="outline" 
          size="icon" 
          className="h-8 w-8"
          onClick={handleMoveAllLeft}
          disabled={disabled || selected.length === 0}
        >
          <ArrowLeftRight className="h-4 w-4" />
        </Button>
      </div>

      {/* 오른쪽: 선택됨 */}
      <div className="flex-1 border rounded-md flex flex-col min-h-0">
        <div className="p-2 bg-primary/10 text-xs font-medium border-b shrink-0">선택됨</div>
        <div className="p-2 space-y-1 flex-1 overflow-y-auto min-h-0">
          {selected.map((option) => (
            <div
              key={option.value}
              className={cn(
                "p-2 text-sm rounded cursor-pointer hover:bg-accent flex justify-between items-center",
                disabled && "opacity-50 cursor-not-allowed"
              )}
              onClick={() => !disabled && handleMoveLeft(option.value)}
            >
              <span>{option.label}</span>
              <X className="h-3 w-3 opacity-50" />
            </div>
          ))}
          {selected.length === 0 && (
            <div className="text-xs text-muted-foreground p-2">선택 없음</div>
          )}
        </div>
      </div>
    </div>
  );
});
SwapSelect.displayName = "SwapSelect";

/**
 * 메인 V2Select 컴포넌트
 */
export const V2Select = forwardRef<HTMLDivElement, V2SelectProps>(
  (props, ref) => {
    const {
      id,
      label,
      required,
      readonly,
      disabled,
      style,
      size,
      config: configProp,
      value,
      onChange,
      onFormDataChange,
      tableName,
      columnName,
      isDesignMode, // 🔧 디자인 모드 (클릭 방지)
    } = props;

    // config가 없으면 기본값 사용
    const config = configProp || { mode: "dropdown" as const, source: "static" as const, options: [] };

    // 엔티티 자동 채움: 같은 폼의 다른 컴포넌트 중 참조 테이블 컬럼을 자동 감지
    const allComponents = (props as any).allComponents as any[] | undefined;

    const [options, setOptions] = useState<SelectOption[]>(config.options || []);
    const [loading, setLoading] = useState(false);
    const [optionsLoaded, setOptionsLoaded] = useState(false);

    // 옵션 로딩에 필요한 값들만 추출 (객체 참조 대신 원시값 사용)
    const rawSource = config.source;
    const categoryTable = (config as any).categoryTable;
    const categoryColumn = (config as any).categoryColumn;
    
    // category 소스 유지 (category_values 테이블에서 로드)
    const source = rawSource;
    const codeGroup = config.codeGroup;
    
    const entityTable = config.entityTable;
    const entityValueColumn = config.entityValueColumn || config.entityValueField;
    const entityLabelColumn = config.entityLabelColumn || config.entityLabelField;
    const table = config.table;
    const valueColumn = config.valueColumn;
    const labelColumn = config.labelColumn;
    const apiEndpoint = config.apiEndpoint;
    const staticOptions = config.options;
    const configFilters = config.filters;
    
    // 계층 코드 연쇄 선택 관련
    const hierarchical = config.hierarchical;
    const parentField = config.parentField;
    
    // FormContext에서 부모 필드 값 가져오기 (Context가 없으면 null)
    const formContext = useContext(V2FormContext);

    /**
     * 필터 조건을 API 전달용 JSON으로 변환
     * field/user 타입은 런타임 값으로 치환
     */
    const resolvedFiltersJson = useMemo(() => {
      if (!configFilters || configFilters.length === 0) return undefined;

      const resolved: Array<{ column: string; operator: string; value: unknown }> = [];

      for (const f of configFilters) {
        const vt = f.valueType || "static";

        // isNull/isNotNull은 값 불필요
        if (f.operator === "isNull" || f.operator === "isNotNull") {
          resolved.push({ column: f.column, operator: f.operator, value: null });
          continue;
        }

        let resolvedValue: unknown = f.value;

        if (vt === "field" && f.fieldRef) {
          // 다른 폼 필드 참조
          if (formContext) {
            resolvedValue = formContext.getValue(f.fieldRef);
          } else {
            const fd = (props as any).formData;
            resolvedValue = fd?.[f.fieldRef];
          }
          // 참조 필드 값이 비어있으면 이 필터 건너뜀
          if (resolvedValue === undefined || resolvedValue === null || resolvedValue === "") continue;
        } else if (vt === "user" && f.userField) {
          // 로그인 사용자 정보 참조 (props에서 가져옴)
          const userMap: Record<string, string | undefined> = {
            companyCode: (props as any).companyCode,
            userId: (props as any).userId,
            deptCode: (props as any).deptCode,
            userName: (props as any).userName,
          };
          resolvedValue = userMap[f.userField];
          if (!resolvedValue) continue;
        }

        resolved.push({ column: f.column, operator: f.operator, value: resolvedValue });
      }

      return resolved.length > 0 ? JSON.stringify(resolved) : undefined;
    }, [configFilters, formContext, props]);
    
    // 부모 필드의 값 계산
    const parentValue = useMemo(() => {
      if (!hierarchical || !parentField) return null;
      
      // FormContext가 있으면 거기서 값 가져오기
      if (formContext) {
        const val = formContext.getValue(parentField);
        return val as string | null;
      }
      
      return null;
    }, [hierarchical, parentField, formContext]);

    // 데이터 소스에 따른 옵션 로딩 (원시값 의존성만 사용)
    useEffect(() => {
      // 계층 구조인 경우 부모 값이 변경되면 다시 로드
      if (hierarchical && source === "code") {
        setOptionsLoaded(false);
      }
    }, [parentValue, hierarchical, source]);

    // 필터 조건이 변경되면 옵션 다시 로드
    useEffect(() => {
      if (resolvedFiltersJson !== undefined) {
        setOptionsLoaded(false);
      }
    }, [resolvedFiltersJson]);

    useEffect(() => {
      // 이미 로드된 경우 스킵 (static 제외, 계층 구조 제외)
      if (optionsLoaded && source !== "static") {
        return;
      }

      const loadOptions = async () => {
        if (source === "static") {
          setOptions(staticOptions || []);
          setOptionsLoaded(true);
          return;
        }

        setLoading(true);
        try {
          let fetchedOptions: SelectOption[] = [];

          if (source === "code" && codeGroup) {
            // 계층 구조 사용 시 자식 코드만 로드
            if (hierarchical) {
              const params = new URLSearchParams();
              if (parentValue) {
                params.append("parentCodeValue", parentValue);
              }
              const queryString = params.toString();
              const url = `/common-codes/categories/${codeGroup}/children${queryString ? `?${queryString}` : ""}`;
              const response = await apiClient.get(url);
              const data = response.data;
              if (data.success && data.data) {
                fetchedOptions = data.data.map((item: { value: string; label: string; hasChildren: boolean }) => ({
                  value: item.value,
                  label: item.label,
                }));
              }
            } else {
              // 일반 공통코드에서 로드 (올바른 API 경로: /common-codes/categories/:categoryCode/options)
              const response = await apiClient.get(`/common-codes/categories/${codeGroup}/options`);
              const data = response.data;
              if (data.success && data.data) {
                fetchedOptions = data.data.map((item: { value: string; label: string }) => ({
                  value: item.value,
                  label: item.label,
                }));
              }
            }
          } else if (source === "db" && table) {
            // DB 테이블에서 로드
            const dbParams: Record<string, any> = {
              value: valueColumn || "id",
              label: labelColumn || "name",
            };
            if (resolvedFiltersJson) dbParams.filters = resolvedFiltersJson;
            const response = await apiClient.get(`/entity/${table}/options`, {
              params: dbParams,
            });
            const data = response.data;
            if (data.success && data.data) {
              fetchedOptions = data.data;
            }
          } else if (source === "entity" && entityTable) {
            // 엔티티(참조 테이블)에서 로드
            const valueCol = entityValueColumn || "id";
            const labelCol = entityLabelColumn || "name";
            const entityParams: Record<string, any> = { value: valueCol, label: labelCol };
            if (resolvedFiltersJson) entityParams.filters = resolvedFiltersJson;
            const response = await apiClient.get(`/entity/${entityTable}/options`, {
              params: entityParams,
            });
            const data = response.data;
            if (data.success && data.data) {
              fetchedOptions = data.data;
            }
          } else if (source === "api" && apiEndpoint) {
            // 외부 API에서 로드
            const response = await apiClient.get(apiEndpoint);
            const data = response.data;
            if (Array.isArray(data)) {
              fetchedOptions = data;
            }
          } else if (source === "category") {
            // 카테고리에서 로드 (category_values 테이블)
            // tableName, columnName은 props에서 가져옴
            const catTable = categoryTable || tableName;
            const catColumn = categoryColumn || columnName;
            
            if (catTable && catColumn) {
              const response = await apiClient.get(`/table-categories/${catTable}/${catColumn}/values`);
              const data = response.data;
              if (data.success && data.data) {
                // 트리 구조를 평탄화하여 옵션으로 변환
                // 🔧 value로 valueCode를 사용 (커스텀 테이블 저장/조회 호환)
                const flattenTree = (items: { valueId: number; valueCode: string; valueLabel: string; children?: any[] }[], depth: number = 0): SelectOption[] => {
                  const result: SelectOption[] = [];
                  for (const item of items) {
                    const prefix = depth > 0 ? "  ".repeat(depth) + "└ " : "";
                    result.push({
                      value: item.valueCode, // 🔧 valueCode를 value로 사용
                      label: prefix + item.valueLabel,
                    });
                    if (item.children && item.children.length > 0) {
                      result.push(...flattenTree(item.children, depth + 1));
                    }
                  }
                  return result;
                };
                fetchedOptions = flattenTree(data.data);
              }
            }
          } else if (source === "select" || source === "distinct") {
            // 해당 테이블의 해당 컬럼에서 DISTINCT 값 조회
            const isValidColumnName = columnName && !columnName.startsWith("comp_");
            if (tableName && isValidColumnName) {
              const distinctParams: Record<string, any> = {};
              if (resolvedFiltersJson) distinctParams.filters = resolvedFiltersJson;
              const response = await apiClient.get(`/entity/${tableName}/distinct/${columnName}`, {
                params: distinctParams,
              });
              const data = response.data;
              if (data.success && data.data) {
                fetchedOptions = data.data.map((item: { value: string; label: string }) => ({
                  value: String(item.value),
                  label: String(item.label),
                }));
              }
            } else if (!isValidColumnName) {
              // columnName이 없거나 유효하지 않으면 빈 옵션
            }
          }

          // null/undefined value 필터링 (cmdk 크래시 방지)
          const sanitized = fetchedOptions.filter(
            (o) => o.value != null && String(o.value) !== ""
          ).map((o) => ({ ...o, value: String(o.value), label: o.label || String(o.value) }));
          setOptions(sanitized);
          setOptionsLoaded(true);
        } catch (error) {
          console.error("옵션 로딩 실패:", error);
          setOptions([]);
        } finally {
          setLoading(false);
        }
      };

        loadOptions();
    }, [source, entityTable, entityValueColumn, entityLabelColumn, codeGroup, table, valueColumn, labelColumn, apiEndpoint, staticOptions, optionsLoaded, hierarchical, parentValue, resolvedFiltersJson]);

    // 레거시 평문값 → 카테고리 코드 자동 정규화 (한글 텍스트로 저장된 데이터 대응)
    const resolvedValue = useMemo(() => {
      if (!value || options.length === 0) return value;

      const resolveOne = (v: string): string => {
        if (options.some(o => o.value === v)) return v;
        const trimmed = v.trim();
        const match = options.find(o => {
          const cleanLabel = o.label.replace(/^[\s└]+/, '').trim();
          return cleanLabel === trimmed;
        });
        return match ? match.value : v;
      };

      if (Array.isArray(value)) {
        const resolved = value.map(resolveOne);
        return resolved.every((v, i) => v === value[i]) ? value : resolved;
      }

      // 콤마 구분 복합값 처리 (e.g., "구매품,판매품,CAT_xxx")
      if (typeof value === "string" && value.includes(",")) {
        const parts = value.split(",");
        const resolved = parts.map(p => resolveOne(p.trim()));
        const result = resolved.join(",");
        return result === value ? value : result;
      }

      return resolveOne(value);
    }, [value, options]);

    // 정규화 결과가 원본과 다르면 onChange로 자동 업데이트 (저장 시 코드 변환)
    useEffect(() => {
      if (!onChange || options.length === 0 || !value || value === resolvedValue) return;
      onChange(resolvedValue as string | string[]);
    }, [resolvedValue]); // eslint-disable-line react-hooks/exhaustive-deps

    // 같은 폼에서 참조 테이블(entityTable) 컬럼을 사용하는 다른 컴포넌트 자동 감지
    const autoFillTargets = useMemo(() => {
      if (source !== "entity" || !entityTable || !allComponents) return [];

      const targets: Array<{ sourceField: string; targetColumnName: string }> = [];
      for (const comp of allComponents) {
        if (comp.id === id) continue;

        // overrides 구조 지원 (DB에서 로드 시 overrides 안에 데이터가 있음)
        const ov = (comp as any).overrides || {};
        const compColumnName = comp.columnName || ov.columnName || comp.componentConfig?.columnName || "";

        // 방법1: entityJoinTable 속성이 있는 경우
        const joinTable = comp.entityJoinTable || ov.entityJoinTable || comp.componentConfig?.entityJoinTable;
        const joinColumn = comp.entityJoinColumn || ov.entityJoinColumn || comp.componentConfig?.entityJoinColumn;
        if (joinTable === entityTable && joinColumn) {
          targets.push({ sourceField: joinColumn, targetColumnName: compColumnName });
          continue;
        }

        // 방법2: columnName이 "테이블명.컬럼명" 형식인 경우 (예: item_info.unit)
        if (compColumnName.includes(".")) {
          const [prefix, actualColumn] = compColumnName.split(".");
          if (prefix === entityTable && actualColumn) {
            targets.push({ sourceField: actualColumn, targetColumnName: compColumnName });
          }
        }
      }
      return targets;
    }, [source, entityTable, allComponents, id]);

    // 엔티티 autoFill 적용 래퍼
    const handleChangeWithAutoFill = useCallback((newValue: string | string[]) => {
      onChange?.(newValue);

      if (autoFillTargets.length === 0 || !onFormDataChange || !entityTable) return;

      const selectedKey = typeof newValue === "string" ? newValue : newValue[0];
      if (!selectedKey) return;

      const valueCol = entityValueColumn || "id";

      apiClient.get(`/table-management/tables/${entityTable}/data-with-joins`, {
        params: {
          page: 1,
          size: 1,
          search: JSON.stringify({ [valueCol]: selectedKey }),
          autoFilter: JSON.stringify({ enabled: true, filterColumn: "company_code", userField: "companyCode" }),
        },
      }).then((res) => {
        const responseData = res.data?.data;
        const rows = responseData?.data || responseData?.rows || [];
        if (rows.length > 0) {
          const fullData = rows[0];
          for (const target of autoFillTargets) {
            const sourceValue = fullData[target.sourceField];
            if (sourceValue !== undefined) {
              onFormDataChange(target.targetColumnName, sourceValue);
            }
          }
        }
      }).catch((err) => console.error("autoFill 조회 실패:", err));
    }, [onChange, autoFillTargets, onFormDataChange, entityTable, entityValueColumn]);

    // 모드별 컴포넌트 렌더링
    const renderSelect = () => {
      if (loading) {
        return <div className="h-full flex items-center text-sm text-muted-foreground">로딩 중...</div>;
      }

      const isDisabled = disabled || readonly;
      
      // 명시적 높이가 있을 때만 style 전달, 없으면 undefined (기본 높이 h-6 사용)
      const heightStyle: React.CSSProperties | undefined = componentHeight 
        ? { height: componentHeight }
        : undefined;

      // 🔧 디자인 모드용: 옵션이 없고 dropdown/combobox가 아닌 모드일 때 source 정보 표시
      const nonDropdownModes = ["radio", "check", "checkbox", "tag", "tagbox", "toggle", "swap"];
      if (options.length === 0 && nonDropdownModes.includes(config.mode || "dropdown")) {
        // 데이터 소스 정보 기반 메시지 생성
        let sourceInfo = "";
        if (source === "static") {
          sourceInfo = "정적 옵션 설정 필요";
        } else if (source === "code") {
          sourceInfo = codeGroup ? `공통코드: ${codeGroup}` : "공통코드 설정 필요";
        } else if (source === "entity") {
          sourceInfo = entityTable ? `엔티티: ${entityTable}` : "엔티티 설정 필요";
        } else if (source === "category") {
          const catInfo = categoryTable || tableName || columnName;
          sourceInfo = catInfo ? `카테고리: ${catInfo}` : "카테고리 설정 필요";
        } else if (source === "db") {
          sourceInfo = table ? `테이블: ${table}` : "테이블 설정 필요";
        } else if (!source || source === "distinct") {
          // distinct 또는 미설정인 경우 - 컬럼명 기반으로 표시
          sourceInfo = columnName ? `컬럼: ${columnName}` : "데이터 소스 설정 필요";
        } else {
          sourceInfo = `소스: ${source}`;
        }

        // 모드 이름 한글화
        const modeNames: Record<string, string> = {
          radio: "라디오",
          check: "체크박스", 
          checkbox: "체크박스",
          tag: "태그",
          tagbox: "태그박스",
          toggle: "토글",
          swap: "스왑",
        };
        const modeName = modeNames[config.mode || ""] || config.mode;

        return (
          <div className="h-full flex items-center justify-center text-xs text-muted-foreground border border-dashed rounded p-2">
            <span className="opacity-70">[{modeName}] {sourceInfo}</span>
          </div>
        );
      }

      switch (config.mode) {
        case "dropdown":
        case "combobox":
          return (
            <DropdownSelect
              options={options}
              value={resolvedValue}
              onChange={handleChangeWithAutoFill}
              placeholder="선택"
              searchable={config.mode === "combobox" ? true : config.searchable}
              multiple={config.multiple}
              maxSelect={config.maxSelect}
              allowClear={config.allowClear}
              disabled={isDisabled}
              style={heightStyle}
            />
          );

        case "radio":
          return (
            <RadioSelect
              options={options}
              value={typeof resolvedValue === "string" ? resolvedValue : resolvedValue?.[0]}
              onChange={(v) => handleChangeWithAutoFill(v)}
              disabled={isDisabled}
            />
          );

        case "check":
        case "checkbox":
          return (
            <CheckSelect
              options={options}
              value={Array.isArray(resolvedValue) ? resolvedValue : resolvedValue ? [resolvedValue] : []}
              onChange={handleChangeWithAutoFill}
              maxSelect={config.maxSelect}
              disabled={isDisabled}
            />
          );

        case "tag":
          return (
            <TagSelect
              options={options}
              value={Array.isArray(resolvedValue) ? resolvedValue : resolvedValue ? [resolvedValue] : []}
              onChange={handleChangeWithAutoFill}
              maxSelect={config.maxSelect}
              disabled={isDisabled}
            />
          );

        case "tagbox":
          return (
            <TagboxSelect
              options={options}
              value={Array.isArray(resolvedValue) ? resolvedValue : resolvedValue ? [resolvedValue] : []}
              onChange={handleChangeWithAutoFill}
              placeholder={config.placeholder || "선택하세요"}
              maxSelect={config.maxSelect}
              disabled={isDisabled}
              style={heightStyle}
            />
          );

        case "toggle":
          return (
            <ToggleSelect
              options={options}
              value={typeof resolvedValue === "string" ? resolvedValue : resolvedValue?.[0]}
              onChange={(v) => handleChangeWithAutoFill(v)}
              disabled={isDisabled}
            />
          );

        case "swap":
          return (
            <SwapSelect
              options={options}
              value={Array.isArray(resolvedValue) ? resolvedValue : resolvedValue ? [resolvedValue] : []}
              onChange={handleChangeWithAutoFill}
              maxSelect={config.maxSelect}
              disabled={isDisabled}
            />
          );

        default:
          return (
            <DropdownSelect
              options={options}
              value={resolvedValue}
              onChange={handleChangeWithAutoFill}
              disabled={isDisabled}
              style={heightStyle}
            />
          );
      }
    };

    const showLabel = label && style?.labelDisplay !== false && style?.labelDisplay !== "false";
    const componentWidth = size?.width || style?.width;
    const componentHeight = size?.height || style?.height;

    // 라벨 위치 및 높이 계산
    const labelPos = style?.labelPosition || "top";
    const isHorizLabel = labelPos === "left" || labelPos === "right";
    const labelFontSize = style?.labelFontSize ? parseInt(String(style.labelFontSize)) : 14;
    const labelMarginBottom = style?.labelMarginBottom ? parseInt(String(style.labelMarginBottom)) : 4;
    const estimatedLabelHeight = labelFontSize + labelMarginBottom + 2;
    const labelGapValue = style?.labelGap || "8px";

    // 커스텀 스타일 감지
    const hasCustomBorder = !!(style?.borderWidth || style?.borderColor || style?.borderStyle || style?.border);
    const hasCustomBackground = !!style?.backgroundColor;
    const hasCustomRadius = !!style?.borderRadius;

    const customTextStyle: React.CSSProperties = {};
    if (style?.color) customTextStyle.color = style.color;
    if (style?.fontSize) customTextStyle.fontSize = style.fontSize;
    if (style?.fontWeight) customTextStyle.fontWeight = style.fontWeight;
    if (style?.textAlign) customTextStyle.textAlign = style.textAlign as React.CSSProperties["textAlign"];
    const hasCustomText = Object.keys(customTextStyle).length > 0;

    const labelElement = showLabel ? (
      <Label
        htmlFor={id}
        style={{
          ...(labelPos === "top" ? { position: "absolute" as const, top: `-${estimatedLabelHeight}px`, left: 0 } : {}),
          ...(labelPos === "bottom" ? { position: "absolute" as const, bottom: `-${estimatedLabelHeight}px`, left: 0 } : {}),
          fontSize: style?.labelFontSize || "14px",
          color: style?.labelColor || "#64748b",
          fontWeight: style?.labelFontWeight || "500",
        }}
        className="text-sm font-medium whitespace-nowrap"
      >
        {label}
        {required && <span className="text-orange-500 ml-0.5">*</span>}
      </Label>
    ) : null;

    const selectContent = (
      <div
        className={cn(
          isHorizLabel ? "min-w-0 flex-1" : "h-full w-full",
          hasCustomBorder && "[&_button]:border-0! **:data-[slot=select-trigger]:border-0! [&_.border]:border-0!",
          (hasCustomBorder || hasCustomRadius) && "[&_button]:rounded-none! **:data-[slot=select-trigger]:rounded-none! [&_.rounded-md]:rounded-none!",
          hasCustomBackground && "[&_button]:bg-transparent! **:data-[slot=select-trigger]:bg-transparent!",
        )}
        style={{ ...(hasCustomText ? customTextStyle : {}), ...(isHorizLabel ? { height: "100%" } : {}) }}
      >
        {renderSelect()}
      </div>
    );

    if (isHorizLabel && showLabel) {
      return (
        <div
          ref={ref}
          id={id}
          className={cn(isDesignMode && "pointer-events-none")}
          style={{
            width: componentWidth,
            height: componentHeight,
            display: "flex",
            flexDirection: labelPos === "left" ? "row" : "row-reverse",
            alignItems: "center",
            gap: labelGapValue,
          }}
        >
          {labelElement}
          {selectContent}
        </div>
      );
    }

    return (
      <div
        ref={ref}
        id={id}
        className={cn("relative", isDesignMode && "pointer-events-none")}
        style={{
          width: componentWidth,
          height: componentHeight,
        }}
      >
        {labelElement}
        {selectContent}
      </div>
    );
  }
);

V2Select.displayName = "V2Select";

export default V2Select;