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path: root/components/common/material/material-group-selector-dialog-multi.tsx
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"use client";

import React, { useState, useCallback } from "react";
import { Button } from "@/components/ui/button";
import { Badge } from "@/components/ui/badge";
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
  DialogTrigger,
} from "@/components/ui/dialog";
import { MaterialGroupSelector } from "./material-group-selector";
import { MaterialSearchItem } from "@/lib/material/material-group-service";
import { X } from "lucide-react";

/**
 * 자재그룹 다중 선택 Dialog 컴포넌트
 * 
 * @description
 * - MaterialGroupSelector를 Dialog로 래핑한 다중 선택 컴포넌트
 * - 버튼 클릭 시 Dialog가 열리고, 여러 자재를 선택한 후 확인 버튼으로 완료
 * - 최대 선택 개수 제한 가능
 * 
 * @MaterialSearchItem_Structure
 * 상태에서 관리되는 자재그룹 객체의 형태:
 * ```typescript
 * interface MaterialSearchItem {
 *   materialGroupCode: string;        // 자재그룹코드 (예: "BG2001")
 *   materialGroupDescription: string; // 자재그룹명 (예: "DOUBLE WETDOOR HINGE")
 *   materialGroupUom?: string;        // 단위 (예: "EA", "KG") - 선택적
 *   displayText: string;              // 표시용 텍스트 (code + " - " + description)
 * }
 * ```
 * 
 * @state
 * - open: Dialog 열림/닫힘 상태
 * - selectedMaterials: 현재 선택된 자재들 (배열)
 * - tempSelectedMaterials: Dialog 내에서 임시로 선택된 자재들 (확인 버튼 클릭 전까지)
 * 
 * @callback
 * - onMaterialsSelect: 자재 선택 완료 시 호출되는 콜백
 *   - 매개변수: MaterialSearchItem[]
 *   - 선택된 자재들의 배열 (빈 배열일 수도 있음)
 * 
 * @usage
 * ```tsx
 * <MaterialGroupSelectorDialogMulti
 *   triggerLabel="자재 선택 (다중)"
 *   selectedMaterials={selectedMaterials}
 *   onMaterialsSelect={(materials) => {
 *     setSelectedMaterials(materials);
 *     console.log('선택된 자재들:', materials);
 *   }}
 *   maxSelections={5}
 *   placeholder="자재를 검색하세요..."
 * />
 * ```
 */

interface MaterialGroupSelectorDialogMultiProps {
  /** Dialog를 여는 트리거 버튼 텍스트 */
  triggerLabel?: string;
  /** 현재 선택된 자재들 */
  selectedMaterials?: MaterialSearchItem[];
  /** 자재 선택 완료 시 호출되는 콜백 */
  onMaterialsSelect?: (materials: MaterialSearchItem[]) => void;
  /** 최대 선택 가능한 자재 개수 */
  maxSelections?: number;
  /** 검색 입력창 placeholder */
  placeholder?: string;
  /** Dialog 제목 */
  title?: string;
  /** Dialog 설명 */
  description?: string;
  /** 트리거 버튼 비활성화 여부 */
  disabled?: boolean;
  /** 트리거 버튼 variant */
  triggerVariant?: "default" | "destructive" | "outline" | "secondary" | "ghost" | "link";
  /** 제외할 자재그룹코드들 */
  excludeMaterialCodes?: Set<string>;
  /** 초기 데이터 표시 여부 */
  showInitialData?: boolean;
  /** 트리거 버튼에서 선택된 자재들을 표시할지 여부 */
  showSelectedInTrigger?: boolean;
}

export function MaterialGroupSelectorDialogMulti({
  triggerLabel = "자재 선택",
  selectedMaterials = [],
  onMaterialsSelect,
  maxSelections,
  placeholder = "자재를 검색하세요...",
  title = "자재 선택 (다중)",
  description,
  disabled = false,
  triggerVariant = "outline",
  excludeMaterialCodes,
  showInitialData = true,
  showSelectedInTrigger = true,
}: MaterialGroupSelectorDialogMultiProps) {
  // Dialog 열림/닫힘 상태
  const [open, setOpen] = useState(false);
  
  // Dialog 내에서 임시로 선택된 자재들 (확인 버튼 클릭 전까지)
  const [tempSelectedMaterials, setTempSelectedMaterials] = useState<MaterialSearchItem[]>([]);

  // Dialog 설명 동적 생성
  const dialogDescription = description || 
    (maxSelections 
      ? `원하는 자재를 검색하고 선택해주세요. (최대 ${maxSelections}개)`
      : "원하는 자재를 검색하고 선택해주세요."
    );

  // Dialog 열림 시 현재 선택된 자재들로 임시 선택 초기화
  const handleOpenChange = useCallback((newOpen: boolean) => {
    setOpen(newOpen);
    if (newOpen) {
      setTempSelectedMaterials([...selectedMaterials]);
    }
  }, [selectedMaterials]);

  // 자재 선택 처리 (Dialog 내에서)
  const handleMaterialsChange = useCallback((materials: MaterialSearchItem[]) => {
    setTempSelectedMaterials(materials);
  }, []);

  // 확인 버튼 클릭 시 선택 완료
  const handleConfirm = useCallback(() => {
    onMaterialsSelect?.(tempSelectedMaterials);
    setOpen(false);
  }, [tempSelectedMaterials, onMaterialsSelect]);

  // 취소 버튼 클릭 시
  const handleCancel = useCallback(() => {
    setTempSelectedMaterials([...selectedMaterials]);
    setOpen(false);
  }, [selectedMaterials]);

  // 전체 선택 해제
  const handleClearAll = useCallback(() => {
    setTempSelectedMaterials([]);
  }, []);

  // 개별 자재 제거 (트리거 버튼에서)
  const handleRemoveMaterial = useCallback((materialToRemove: MaterialSearchItem, e: React.MouseEvent) => {
    e.preventDefault();
    e.stopPropagation();
    const newMaterials = selectedMaterials.filter(
      (material) => !(material.materialGroupCode === materialToRemove.materialGroupCode && 
                     material.materialGroupDescription === materialToRemove.materialGroupDescription)
    );
    onMaterialsSelect?.(newMaterials);
  }, [selectedMaterials, onMaterialsSelect]);

  // 트리거 버튼 렌더링
  const renderTriggerContent = () => {
    if (selectedMaterials.length === 0) {
      return triggerLabel;
    }

    if (!showSelectedInTrigger) {
      return `${triggerLabel} (${selectedMaterials.length}개)`;
    }

    return (
      <div className="flex flex-wrap gap-1 items-center max-w-full">
        <span className="shrink-0">{triggerLabel}:</span>
        {selectedMaterials.slice(0, 2).map((material) => (
          <Badge
            key={`${material.materialGroupCode}-${material.materialGroupDescription}`}
            variant="secondary"
            className="gap-1 pr-1 max-w-[120px]"
          >
            <span className="truncate text-xs">
              {material.materialGroupDescription}
            </span>
            {!disabled && (
              <button
                type="button"
                className="ml-1 h-3 w-3 rounded-sm hover:bg-red-100 flex items-center justify-center"
                onClick={(e) => handleRemoveMaterial(material, e)}
              >
                <X className="h-3 w-3 hover:text-red-500" />
              </button>
            )}
          </Badge>
        ))}
        {selectedMaterials.length > 2 && (
          <Badge variant="outline" className="text-xs">
            +{selectedMaterials.length - 2}개
          </Badge>
        )}
      </div>
    );
  };

  return (
    <Dialog open={open} onOpenChange={handleOpenChange}>
      <DialogTrigger asChild>
        <Button 
          variant={triggerVariant} 
          disabled={disabled}
          className="min-h-[2.5rem] h-auto justify-start"
        >
          {renderTriggerContent()}
        </Button>
      </DialogTrigger>
      
      <DialogContent className="max-w-md">
        <DialogHeader>
          <DialogTitle>{title}</DialogTitle>
          <DialogDescription>{dialogDescription}</DialogDescription>
        </DialogHeader>
        
        <div className="py-4">
          <MaterialGroupSelector
            selectedMaterials={tempSelectedMaterials}
            onMaterialsChange={handleMaterialsChange}
            singleSelect={false}
            maxSelections={maxSelections}
            placeholder={placeholder}
            noValuePlaceHolder="자재를 선택해주세요"
            closeOnSelect={false}
            excludeMaterialCodes={excludeMaterialCodes}
            showInitialData={showInitialData}
          />
          
          {/* 선택된 자재 개수 표시 */}
          <div className="mt-2 text-sm text-muted-foreground">
            {maxSelections ? (
              `선택됨: ${tempSelectedMaterials.length}/${maxSelections}개`
            ) : (
              `선택됨: ${tempSelectedMaterials.length}개`
            )}
          </div>
        </div>

        <DialogFooter className="gap-2">
          <Button variant="outline" onClick={handleCancel}>
            취소
          </Button>
          {tempSelectedMaterials.length > 0 && (
            <Button variant="ghost" onClick={handleClearAll}>
              전체 해제
            </Button>
          )}
          <Button onClick={handleConfirm}>
            확인 ({tempSelectedMaterials.length}개)
          </Button>
        </DialogFooter>
      </DialogContent>
    </Dialog>
  );
}

/**
 * 사용 예시:
 * 
 * ```tsx
 * const [selectedMaterials, setSelectedMaterials] = useState<MaterialSearchItem[]>([]);
 * 
 * return (
 *   <MaterialGroupSelectorDialogMulti
 *     triggerLabel="자재 선택"
 *     selectedMaterials={selectedMaterials}
 *     onMaterialsSelect={(materials) => {
 *       setSelectedMaterials(materials);
 *       console.log('선택된 자재들:', materials.map(m => ({
 *         code: m.materialGroupCode,
 *         description: m.materialGroupDescription,
 *         uom: m.materialGroupUom
 *       })));
 *     }}
 *     maxSelections={5}
 *     title="필수 자재 선택"
 *     description="프로젝트에 필요한 자재들을 선택해주세요."
 *     showSelectedInTrigger={true}
 *   />
 * );
 * ```
 * 
 * @advanced_usage
 * ```tsx
 * // 제외할 자재가 있는 경우
 * const excludedCodes = new Set(['MAT001', 'MAT002']);
 * 
 * <MaterialGroupSelectorDialogMulti
 *   selectedMaterials={selectedMaterials}
 *   onMaterialsSelect={setSelectedMaterials}
 *   excludeMaterialCodes={excludedCodes}
 *   maxSelections={3}
 *   triggerVariant="default"
 *   showSelectedInTrigger={false}
 * />
 * ```
 */