'use client';

/**
 * 제품검사 등록 페이지
 *
 * 기획서 기반 전면 재구축:
 * - 기본정보 입력
 * - 건축공사장, 자재유통업자, 공사시공자, 공사감리자 정보
 * - 검사 정보 (검사방문요청일, 기간, 검사자, 현장주소)
 * - 수주 설정 정보 (수주 선택 → 규격 비교 테이블)
 */

import { useState, useCallback, useMemo } from 'react';
import { useRouter } from 'next/navigation';
import { Plus, Trash2, ClipboardCheck } from 'lucide-react';
import { Button } from '@/components/ui/button';
import { Badge } from '@/components/ui/badge';
import { getPresetStyle } from '@/lib/utils/status-config';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { Input } from '@/components/ui/input';
import { Label } from '@/components/ui/label';
import {
  Table,
  TableBody,
  TableCell,
  TableHead,
  TableHeader,
  TableRow,
} from '@/components/ui/table';
import {
  Accordion,
  AccordionContent,
  AccordionItem,
  AccordionTrigger,
} from '@/components/ui/accordion';
import { IntegratedDetailTemplate } from '@/components/templates/IntegratedDetailTemplate';
import { qualityInspectionCreateConfig } from './inspectionConfig';
import { toast } from 'sonner';
import { createInspection } from './actions';
import { isOrderSpecSame, calculateOrderSummary } from './mockData';
import { isNextRedirectError } from '@/lib/utils/redirect-error';
import { OrderSelectModal } from './OrderSelectModal';
import { ProductInspectionInputModal } from './ProductInspectionInputModal';
import type { InspectionFormData, OrderSettingItem, OrderSelectItem, OrderGroup, ProductInspectionData } from './types';
import {
  emptyConstructionSite,
  emptyMaterialDistributor,
  emptyConstructor,
  emptySupervisor,
  emptyScheduleInfo,
} from './mockData';

export function InspectionCreate() {
  const router = useRouter();

  // 폼 상태
  const [formData, setFormData] = useState<InspectionFormData>({
    qualityDocNumber: '',
    siteName: '',
    client: '',
    manager: '',
    managerContact: '',
    constructionSite: { ...emptyConstructionSite },
    materialDistributor: { ...emptyMaterialDistributor },
    constructorInfo: { ...emptyConstructor },
    supervisor: { ...emptySupervisor },
    scheduleInfo: { ...emptyScheduleInfo },
    orderItems: [],
  });

  const [isSubmitting, setIsSubmitting] = useState(false);
  const [orderModalOpen, setOrderModalOpen] = useState(false);

  // 제품검사 입력 모달
  const [inspectionInputOpen, setInspectionInputOpen] = useState(false);
  const [selectedOrderItem, setSelectedOrderItem] = useState<OrderSettingItem | null>(null);

  // ===== 수주 선택 처리 =====
  const handleOrderSelect = useCallback((items: OrderSelectItem[]) => {
    const newOrderItems: OrderSettingItem[] = items.map((item) => ({
      id: item.id,
      orderNumber: item.orderNumber,
      siteName: item.siteName,
      deliveryDate: item.deliveryDate,
      floor: '',
      symbol: '',
      orderWidth: 0,
      orderHeight: 0,
      constructionWidth: 0,
      constructionHeight: 0,
      changeReason: '',
    }));
    setFormData((prev) => ({
      ...prev,
      orderItems: [...prev.orderItems, ...newOrderItems],
    }));
  }, []);

  // ===== 수주 항목 삭제 =====
  const handleRemoveOrderItem = useCallback((itemId: string) => {
    setFormData((prev) => ({
      ...prev,
      orderItems: prev.orderItems.filter((item) => item.id !== itemId),
    }));
  }, []);

  // ===== 폼 필드 변경 헬퍼 =====
  const updateField = useCallback(<K extends keyof InspectionFormData>(
    key: K,
    value: InspectionFormData[K]
  ) => {
    setFormData((prev) => ({ ...prev, [key]: value }));
  }, []);

  const updateNested = useCallback((
    section: 'constructionSite' | 'materialDistributor' | 'constructorInfo' | 'supervisor' | 'scheduleInfo',
    field: string,
    value: string
  ) => {
    setFormData((prev) => ({
      ...prev,
      [section]: {
        ...(prev[section] as unknown as Record<string, unknown>),
        [field]: value,
      },
    }));
  }, []);

  // ===== 수주 설정 요약 =====
  const orderSummary = useMemo(
    () => calculateOrderSummary(formData.orderItems),
    [formData.orderItems]
  );

  // ===== 수주 항목을 그룹별로 묶기 (아코디언용) =====
  const groupOrderItems = useCallback((items: OrderSettingItem[]): OrderGroup[] => {
    const groups: Record<string, OrderGroup> = {};
    items.forEach((item) => {
      const key = item.orderNumber;
      if (!groups[key]) {
        groups[key] = {
          orderNumber: item.orderNumber,
          siteName: item.siteName,
          deliveryDate: item.deliveryDate,
          locationCount: 0,
          items: [],
        };
      }
      groups[key].items.push(item);
      groups[key].locationCount = groups[key].items.length;
    });
    return Object.values(groups);
  }, []);

  const orderGroups = useMemo(
    () => groupOrderItems(formData.orderItems),
    [formData.orderItems, groupOrderItems]
  );

  // ===== 제품검사 입력 핸들러 =====
  const handleOpenInspectionInput = useCallback((item: OrderSettingItem) => {
    setSelectedOrderItem(item);
    setInspectionInputOpen(true);
  }, []);

  const handleInspectionComplete = useCallback((data: ProductInspectionData) => {
    if (!selectedOrderItem) return;

    setFormData((prev) => ({
      ...prev,
      orderItems: prev.orderItems.map((item) =>
        item.id === selectedOrderItem.id
          ? { ...item, inspectionData: data }
          : item
      ),
    }));

    toast.success('검사 데이터가 저장되었습니다.');
    setSelectedOrderItem(null);
  }, [selectedOrderItem]);

  // ===== 시공규격/변경사유 수정 핸들러 =====
  const handleUpdateOrderItemField = useCallback((
    itemId: string,
    field: 'constructionWidth' | 'constructionHeight' | 'changeReason',
    value: string | number
  ) => {
    setFormData((prev) => ({
      ...prev,
      orderItems: prev.orderItems.map((item) =>
        item.id === itemId ? { ...item, [field]: value } : item
      ),
    }));
  }, []);

  // ===== 취소 =====
  const handleCancel = useCallback(() => {
    router.push('/quality/inspections');
  }, [router]);

  // ===== 등록 제출 =====
  const handleSubmit = useCallback(async (): Promise<{ success: boolean; error?: string }> => {
    // 필수 필드 검증
    if (!formData.siteName.trim()) {
      toast.error('현장명은 필수 입력 항목입니다.');
      return { success: false, error: '현장명을 입력해주세요.' };
    }
    if (!formData.client.trim()) {
      toast.error('수주처는 필수 입력 항목입니다.');
      return { success: false, error: '수주처를 입력해주세요.' };
    }

    setIsSubmitting(true);
    try {
      const result = await createInspection(formData);
      if (result.success) {
        toast.success('제품검사가 등록되었습니다.');
        router.push('/quality/inspections');
        return { success: true };
      }
      return { success: false, error: result.error || '등록에 실패했습니다.' };
    } catch (error) {
      if (isNextRedirectError(error)) throw error;
      return { success: false, error: '등록 중 오류가 발생했습니다.' };
    } finally {
      setIsSubmitting(false);
    }
  }, [formData, router]);

  // ===== 수주 설정 아코디언 =====
  const renderOrderAccordion = (groups: OrderGroup[]) => {
    if (groups.length === 0) {
      return (
        <div className="text-center text-muted-foreground py-8">
          수주를 선택해주세요.
        </div>
      );
    }

    return (
      <Accordion type="multiple" className="w-full">
        {groups.map((group) => (
          <AccordionItem key={group.orderNumber} value={group.orderNumber} className="border rounded-lg mb-2">
            {/* 상위 레벨: 수주번호, 현장명, 납품일, 개소, 삭제 */}
            <div className="flex items-center">
              <AccordionTrigger className="px-4 py-3 hover:no-underline flex-1">
                <div className="flex items-center gap-6 text-sm w-full">
                  <span className="font-medium w-32">{group.orderNumber}</span>
                  <span className="text-muted-foreground flex-1">{group.siteName}</span>
                  <span className="text-muted-foreground w-28">{group.deliveryDate}</span>
                  <span className="text-muted-foreground w-16">{group.locationCount}개소</span>
                </div>
              </AccordionTrigger>
              <Button
                variant="ghost"
                size="icon"
                className="h-7 w-7 mr-4 text-muted-foreground hover:text-red-600"
                type="button"
                onClick={() => {
                  group.items.forEach((item) => handleRemoveOrderItem(item.id));
                }}
              >
                <Trash2 className="w-4 h-4" />
              </Button>
            </div>
            <AccordionContent className="px-4 pb-4">
              {/* 하위 레벨: 테이블 */}
              <Table>
                <TableHeader>
                  <TableRow>
                    <TableHead className="w-12 text-center">No.</TableHead>
                    <TableHead>층수</TableHead>
                    <TableHead>부호</TableHead>
                    <TableHead className="text-center">수주 가로</TableHead>
                    <TableHead className="text-center">수주 세로</TableHead>
                    <TableHead className="text-center w-24">시공 가로</TableHead>
                    <TableHead className="text-center w-24">시공 세로</TableHead>
                    <TableHead className="w-40">변경사유</TableHead>
                    <TableHead className="w-24 text-center">검사</TableHead>
                  </TableRow>
                </TableHeader>
                <TableBody>
                  {group.items.map((item, index) => (
                    <TableRow key={item.id}>
                      <TableCell className="text-center">{index + 1}</TableCell>
                      <TableCell>{item.floor || '-'}</TableCell>
                      <TableCell>{item.symbol || '-'}</TableCell>
                      <TableCell className="text-center">{item.orderWidth}</TableCell>
                      <TableCell className="text-center">{item.orderHeight}</TableCell>
                      <TableCell className="text-center">
                        <Input
                          type="number"
                          value={item.constructionWidth || ''}
                          onChange={(e) =>
                            handleUpdateOrderItemField(item.id, 'constructionWidth', Number(e.target.value))
                          }
                          className="h-8 w-20 text-center"
                        />
                      </TableCell>
                      <TableCell className="text-center">
                        <Input
                          type="number"
                          value={item.constructionHeight || ''}
                          onChange={(e) =>
                            handleUpdateOrderItemField(item.id, 'constructionHeight', Number(e.target.value))
                          }
                          className="h-8 w-20 text-center"
                        />
                      </TableCell>
                      <TableCell>
                        <Input
                          value={item.changeReason || ''}
                          onChange={(e) =>
                            handleUpdateOrderItemField(item.id, 'changeReason', e.target.value)
                          }
                          className="h-8"
                          placeholder="변경사유 입력"
                        />
                      </TableCell>
                      <TableCell className="text-center">
                        <Button
                          variant="outline"
                          size="sm"
                          onClick={() => handleOpenInspectionInput(item)}
                          className="h-7"
                        >
                          <ClipboardCheck className="w-3.5 h-3.5 mr-1" />
                          검사하기
                        </Button>
                      </TableCell>
                    </TableRow>
                  ))}
                </TableBody>
              </Table>
            </AccordionContent>
          </AccordionItem>
        ))}
      </Accordion>
    );
  };

  // ===== 폼 렌더링 =====
  const renderFormContent = useCallback(() => (
    <div className="space-y-6">
      {/* 기본 정보 */}
      <Card>
        <CardHeader>
          <CardTitle className="text-base">기본 정보</CardTitle>
        </CardHeader>
        <CardContent>
          <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
            <div className="space-y-2">
              <Label>품질관리서 번호</Label>
              <Input
                value={formData.qualityDocNumber}
                onChange={(e) => updateField('qualityDocNumber', e.target.value)}
                placeholder="품질관리서 번호 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>현장명 <span className="text-red-500">*</span></Label>
              <Input
                value={formData.siteName}
                onChange={(e) => updateField('siteName', e.target.value)}
                placeholder="현장명 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>수주처 <span className="text-red-500">*</span></Label>
              <Input
                value={formData.client}
                onChange={(e) => updateField('client', e.target.value)}
                placeholder="수주처 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>담당자</Label>
              <Input
                value={formData.manager}
                onChange={(e) => updateField('manager', e.target.value)}
                placeholder="담당자 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>담당자 연락처</Label>
              <Input
                value={formData.managerContact}
                onChange={(e) => updateField('managerContact', e.target.value)}
                placeholder="담당자 연락처 입력"
              />
            </div>
          </div>
        </CardContent>
      </Card>

      {/* 건축공사장 정보 */}
      <Card>
        <CardHeader>
          <CardTitle className="text-base">건축공사장 정보</CardTitle>
        </CardHeader>
        <CardContent>
          <div className="grid grid-cols-2 md:grid-cols-3 gap-4">
            <div className="space-y-2">
              <Label>현장명</Label>
              <Input
                value={formData.constructionSite.siteName}
                onChange={(e) => updateNested('constructionSite', 'siteName', e.target.value)}
                placeholder="현장명 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>대지위치</Label>
              <Input
                value={formData.constructionSite.landLocation}
                onChange={(e) => updateNested('constructionSite', 'landLocation', e.target.value)}
                placeholder="대지위치 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>지번</Label>
              <Input
                value={formData.constructionSite.lotNumber}
                onChange={(e) => updateNested('constructionSite', 'lotNumber', e.target.value)}
                placeholder="지번 입력"
              />
            </div>
          </div>
        </CardContent>
      </Card>

      {/* 자재유통업자 정보 */}
      <Card>
        <CardHeader>
          <CardTitle className="text-base">자재유통업자 정보</CardTitle>
        </CardHeader>
        <CardContent>
          <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
            <div className="space-y-2">
              <Label>회사명</Label>
              <Input
                value={formData.materialDistributor.companyName}
                onChange={(e) => updateNested('materialDistributor', 'companyName', e.target.value)}
                placeholder="회사명 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>회사주소</Label>
              <Input
                value={formData.materialDistributor.companyAddress}
                onChange={(e) => updateNested('materialDistributor', 'companyAddress', e.target.value)}
                placeholder="회사주소 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>대표자명</Label>
              <Input
                value={formData.materialDistributor.representativeName}
                onChange={(e) => updateNested('materialDistributor', 'representativeName', e.target.value)}
                placeholder="대표자명 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>전화번호</Label>
              <Input
                value={formData.materialDistributor.phone}
                onChange={(e) => updateNested('materialDistributor', 'phone', e.target.value)}
                placeholder="전화번호 입력"
              />
            </div>
          </div>
        </CardContent>
      </Card>

      {/* 공사시공자 정보 */}
      <Card>
        <CardHeader>
          <CardTitle className="text-base">공사시공자 정보</CardTitle>
        </CardHeader>
        <CardContent>
          <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
            <div className="space-y-2">
              <Label>회사명</Label>
              <Input
                value={formData.constructorInfo.companyName}
                onChange={(e) => updateNested('constructorInfo', 'companyName', e.target.value)}
                placeholder="회사명 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>회사주소</Label>
              <Input
                value={formData.constructorInfo.companyAddress}
                onChange={(e) => updateNested('constructorInfo', 'companyAddress', e.target.value)}
                placeholder="회사주소 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>성명</Label>
              <Input
                value={formData.constructorInfo.name}
                onChange={(e) => updateNested('constructorInfo', 'name', e.target.value)}
                placeholder="성명 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>전화번호</Label>
              <Input
                value={formData.constructorInfo.phone}
                onChange={(e) => updateNested('constructorInfo', 'phone', e.target.value)}
                placeholder="전화번호 입력"
              />
            </div>
          </div>
        </CardContent>
      </Card>

      {/* 공사감리자 정보 */}
      <Card>
        <CardHeader>
          <CardTitle className="text-base">공사감리자 정보</CardTitle>
        </CardHeader>
        <CardContent>
          <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
            <div className="space-y-2">
              <Label>사무소명</Label>
              <Input
                value={formData.supervisor.officeName}
                onChange={(e) => updateNested('supervisor', 'officeName', e.target.value)}
                placeholder="사무소명 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>사무소주소</Label>
              <Input
                value={formData.supervisor.officeAddress}
                onChange={(e) => updateNested('supervisor', 'officeAddress', e.target.value)}
                placeholder="사무소주소 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>성명</Label>
              <Input
                value={formData.supervisor.name}
                onChange={(e) => updateNested('supervisor', 'name', e.target.value)}
                placeholder="성명 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>전화번호</Label>
              <Input
                value={formData.supervisor.phone}
                onChange={(e) => updateNested('supervisor', 'phone', e.target.value)}
                placeholder="전화번호 입력"
              />
            </div>
          </div>
        </CardContent>
      </Card>

      {/* 검사 정보 */}
      <Card>
        <CardHeader>
          <CardTitle className="text-base">검사 정보</CardTitle>
        </CardHeader>
        <CardContent>
          <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
            <div className="space-y-2">
              <Label>검사방문요청일</Label>
              <Input
                type="date"
                value={formData.scheduleInfo.visitRequestDate}
                onChange={(e) => updateNested('scheduleInfo', 'visitRequestDate', e.target.value)}
              />
            </div>
            <div className="space-y-2">
              <Label>검사시작일</Label>
              <Input
                type="date"
                value={formData.scheduleInfo.startDate}
                onChange={(e) => updateNested('scheduleInfo', 'startDate', e.target.value)}
              />
            </div>
            <div className="space-y-2">
              <Label>검사종료일</Label>
              <Input
                type="date"
                value={formData.scheduleInfo.endDate}
                onChange={(e) => updateNested('scheduleInfo', 'endDate', e.target.value)}
              />
            </div>
            <div className="space-y-2">
              <Label>검사자</Label>
              <Input
                value={formData.scheduleInfo.inspector}
                onChange={(e) => updateNested('scheduleInfo', 'inspector', e.target.value)}
                placeholder="검사자 입력"
              />
            </div>
          </div>
          {/* 현장 주소 */}
          <div className="mt-4 grid grid-cols-4 gap-4">
            <div className="space-y-2">
              <Label>우편번호</Label>
              <div className="flex gap-2">
                <Input
                  value={formData.scheduleInfo.sitePostalCode}
                  onChange={(e) => updateNested('scheduleInfo', 'sitePostalCode', e.target.value)}
                  className="w-28"
                />
                <Button variant="outline" size="sm" type="button">
                  우편번호 찾기
                </Button>
              </div>
            </div>
            <div className="space-y-2 col-span-2">
              <Label>주소</Label>
              <Input
                value={formData.scheduleInfo.siteAddress}
                onChange={(e) => updateNested('scheduleInfo', 'siteAddress', e.target.value)}
                placeholder="주소 입력"
              />
            </div>
            <div className="space-y-2">
              <Label>상세주소</Label>
              <Input
                value={formData.scheduleInfo.siteAddressDetail}
                onChange={(e) => updateNested('scheduleInfo', 'siteAddressDetail', e.target.value)}
                placeholder="상세주소 입력"
              />
            </div>
          </div>
        </CardContent>
      </Card>

      {/* 수주 설정 정보 */}
      <Card>
        <CardHeader className="flex flex-row items-center justify-between">
          <div className="flex items-center gap-3">
            <CardTitle className="text-base">수주 설정 정보</CardTitle>
            <Button variant="outline" size="sm" type="button" onClick={() => setOrderModalOpen(true)}>
              <Plus className="w-4 h-4 mr-1" />
              수주 선택
            </Button>
          </div>
          <div className="flex items-center gap-3 text-sm">
            <span>전체: <strong>{orderSummary.total}</strong>건</span>
            <span className="text-green-600">일치: <strong>{orderSummary.same}</strong>건</span>
            <span className="text-red-600">불일치: <strong>{orderSummary.changed}</strong>건</span>
          </div>
        </CardHeader>
        <CardContent className="p-4">
          {renderOrderAccordion(orderGroups)}
        </CardContent>
      </Card>
    </div>
  ), [formData, orderSummary, orderGroups, updateField, updateNested, handleRemoveOrderItem, handleOpenInspectionInput, handleUpdateOrderItemField, orderModalOpen]);

  // 이미 선택된 수주 ID 목록
  const excludeOrderIds = useMemo(
    () => formData.orderItems.map((item) => item.id),
    [formData.orderItems]
  );

  return (
    <>
      <IntegratedDetailTemplate
        config={qualityInspectionCreateConfig}
        mode="create"
        isLoading={false}
        isSubmitting={isSubmitting}
        onBack={handleCancel}
        onCancel={handleCancel}
        onSubmit={handleSubmit}
        renderForm={renderFormContent}
      />

      <OrderSelectModal
        open={orderModalOpen}
        onOpenChange={setOrderModalOpen}
        onSelect={handleOrderSelect}
        excludeIds={excludeOrderIds}
      />

      {/* 제품검사 입력 모달 */}
      <ProductInspectionInputModal
        open={inspectionInputOpen}
        onOpenChange={setInspectionInputOpen}
        orderItemId={selectedOrderItem?.id || ''}
        productName="방화셔터"
        specification={selectedOrderItem ? `${selectedOrderItem.orderWidth}x${selectedOrderItem.orderHeight}` : ''}
        initialData={selectedOrderItem?.inspectionData}
        onComplete={handleInspectionComplete}
      />
    </>
  );
}