'use client';

/**
 * 작업일지 모달
 *
 * - 헤더: sam-design 작업일지 스타일
 * - 내부 문서: 스크린샷 기준 작업일지 양식
 * - API 연동 완료 (2025-01-14)
 */

import { useState, useEffect } from 'react';
import { Printer, X, Loader2 } from 'lucide-react';
import {
  Dialog,
  DialogContent,
  DialogTitle,
} from '@/components/ui/dialog';
import { VisuallyHidden } from '@radix-ui/react-visually-hidden';
import { Button } from '@/components/ui/button';
import { printArea } from '@/lib/print-utils';
import { getWorkOrderById } from '../WorkOrders/actions';
import type { WorkOrder, WorkOrderItem } from '../WorkOrders/types';
import { ITEM_STATUS_LABELS } from '../WorkOrders/types';

interface WorkLogModalProps {
  open: boolean;
  onOpenChange: (open: boolean) => void;
  workOrderId: string | null;
}

// 작업 통계 타입
interface WorkStats {
  orderQty: number;
  completedQty: number;
  inProgressQty: number;
  waitingQty: number;
  progress: number;
}

// 품목 데이터에서 작업 통계 계산
function calculateWorkStats(items: WorkOrderItem[]): WorkStats {
  const orderQty = items.length;
  const completedQty = items.filter(i => i.status === 'completed').length;
  const inProgressQty = items.filter(i => i.status === 'in_progress').length;
  const waitingQty = items.filter(i => i.status === 'waiting').length;
  const progress = orderQty > 0 ? Math.round((completedQty / orderQty) * 100) : 0;

  return {
    orderQty,
    completedQty,
    inProgressQty,
    waitingQty,
    progress,
  };
}

export function WorkLogModal({ open, onOpenChange, workOrderId }: WorkLogModalProps) {
  const [order, setOrder] = useState<WorkOrder | null>(null);
  const [isLoading, setIsLoading] = useState(false);
  const [error, setError] = useState<string | null>(null);

  // 모달 열릴 때 데이터 fetch
  useEffect(() => {
    if (open && workOrderId) {
      setIsLoading(true);
      setError(null);

      getWorkOrderById(workOrderId)
        .then((result) => {
          if (result.success && result.data) {
            setOrder(result.data);
          } else {
            setError(result.error || '데이터를 불러올 수 없습니다.');
          }
        })
        .catch(() => {
          setError('서버 오류가 발생했습니다.');
        })
        .finally(() => {
          setIsLoading(false);
        });
    } else if (!open) {
      // 모달 닫힐 때 상태 초기화
      setOrder(null);
      setError(null);
    }
  }, [open, workOrderId]);

  const handlePrint = () => {
    printArea({ title: '작업일지 인쇄' });
  };

  if (!workOrderId) return null;

  // 로딩 상태
  if (isLoading) {
    return (
      <Dialog open={open} onOpenChange={onOpenChange}>
        <DialogContent className="sm:max-w-5xl max-h-[90vh] overflow-y-auto p-0 gap-0 bg-gray-100">
          <VisuallyHidden>
            <DialogTitle>작업일지 로딩 중</DialogTitle>
          </VisuallyHidden>
          <div className="flex items-center justify-center h-64">
            <Loader2 className="w-8 h-8 animate-spin text-muted-foreground" />
          </div>
        </DialogContent>
      </Dialog>
    );
  }

  // 에러 상태
  if (error || !order) {
    return (
      <Dialog open={open} onOpenChange={onOpenChange}>
        <DialogContent className="sm:max-w-5xl max-h-[90vh] overflow-y-auto p-0 gap-0 bg-gray-100">
          <VisuallyHidden>
            <DialogTitle>작업일지 오류</DialogTitle>
          </VisuallyHidden>
          <div className="flex flex-col items-center justify-center h-64 gap-4">
            <p className="text-muted-foreground">{error || '데이터를 불러올 수 없습니다.'}</p>
            <Button variant="outline" onClick={() => onOpenChange(false)}>
              닫기
            </Button>
          </div>
        </DialogContent>
      </Dialog>
    );
  }

  const today = new Date().toLocaleDateString('ko-KR', {
    year: 'numeric',
    month: '2-digit',
    day: '2-digit',
  }).replace(/\. /g, '-').replace('.', '');

  const documentNo = `WL-${order.processCode.toUpperCase().slice(0, 3)}`;

  // 품목 데이터
  const items = order.items || [];

  // 작업 통계 계산
  const workStats = calculateWorkStats(items);

  // 주 담당자
  const primaryAssignee = order.assignees?.find(a => a.isPrimary)?.name || order.assignee || '-';

  return (
    <Dialog open={open} onOpenChange={onOpenChange}>
      <DialogContent className="sm:max-w-5xl max-h-[90vh] overflow-y-auto p-0 gap-0 bg-gray-100">
        {/* 접근성을 위한 숨겨진 타이틀 */}
        <VisuallyHidden>
          <DialogTitle>작업일지 - {order.workOrderNo}</DialogTitle>
        </VisuallyHidden>
        {/* 모달 헤더 - sam-design 스타일 (인쇄 시 숨김) */}
        <div className="print-hidden flex items-center justify-between px-6 py-4 border-b bg-white sticky top-0 z-10">
          <div className="flex items-center gap-3">
            <span className="font-semibold text-lg">작업일지</span>
            <span className="text-sm text-muted-foreground">
              {order.processName} 생산부서
            </span>
            <span className="text-sm text-muted-foreground">
              ({documentNo})
            </span>
          </div>
          <div className="flex items-center gap-2">
            <Button variant="outline" size="sm" onClick={handlePrint}>
              <Printer className="w-4 h-4 mr-1.5" />
              인쇄
            </Button>
            <Button
              variant="ghost"
              size="icon"
              className="h-8 w-8"
              onClick={() => onOpenChange(false)}
            >
              <X className="w-4 h-4" />
            </Button>
          </div>
        </div>

        {/* 문서 본문 (인쇄 시 이 영역만 출력) */}
        <div className="print-area m-6 p-6 bg-white rounded-lg shadow-sm">
          {/* 문서 헤더: 로고 + 제목 + 결재라인 */}
          <div className="flex justify-between items-start mb-6 border border-gray-300">
            {/* 좌측: 로고 영역 */}
            <div className="w-24 border-r border-gray-300 flex flex-col items-center justify-center p-3">
              <span className="text-2xl font-bold">KD</span>
              <span className="text-xs text-gray-500">정동기업</span>
            </div>

            {/* 중앙: 문서 제목 */}
            <div className="flex-1 flex flex-col items-center justify-center p-3 border-r border-gray-300">
              <h1 className="text-xl font-bold tracking-widest mb-1">작 업 일 지</h1>
              <p className="text-xs text-gray-500">{documentNo}</p>
              <p className="text-sm font-medium mt-1">{order.processName} 생산부서</p>
            </div>

            {/* 우측: 결재라인 */}
            <div className="shrink-0 text-xs">
              <table className="border-collapse">
                <tbody>
                  {/* 첫 번째 행: 결재 + 작성/검토/승인 */}
                  <tr>
                    <td rowSpan={3} className="w-8 text-center font-medium bg-gray-100 border-r border-b border-gray-300 align-middle">
                      <div className="flex flex-col items-center">
                        <span>결</span>
                        <span>재</span>
                      </div>
                    </td>
                    <td className="w-16 p-2 text-center font-medium bg-gray-100 border-r border-b border-gray-300">작성</td>
                    <td className="w-16 p-2 text-center font-medium bg-gray-100 border-r border-b border-gray-300">검토</td>
                    <td className="w-16 p-2 text-center font-medium bg-gray-100 border-b border-gray-300">승인</td>
                  </tr>
                  {/* 두 번째 행: 이름 + 날짜 */}
                  <tr>
                    <td className="w-16 p-2 text-center border-r border-b border-gray-300">
                      <div>{primaryAssignee}</div>
                      <div className="text-[10px] text-gray-500">
                        {new Date().toLocaleDateString('ko-KR', { month: '2-digit', day: '2-digit' }).replace('. ', '/').replace('.', '')}
                      </div>
                    </td>
                    <td className="w-16 p-2 text-center border-r border-b border-gray-300"></td>
                    <td className="w-16 p-2 text-center border-b border-gray-300"></td>
                  </tr>
                  {/* 세 번째 행: 부서 */}
                  <tr>
                    <td className="w-16 p-2 text-center bg-gray-50 border-r border-gray-300">판매/전진</td>
                    <td className="w-16 p-2 text-center bg-gray-50 border-r border-gray-300">생산</td>
                    <td className="w-16 p-2 text-center bg-gray-50">품질</td>
                  </tr>
                </tbody>
              </table>
            </div>
          </div>

          {/* 기본 정보 테이블 */}
          <div className="border border-gray-300 mb-6">
            {/* Row 1 */}
            <div className="grid grid-cols-2 border-b border-gray-300">
              <div className="flex border-r border-gray-300">
                <div className="w-24 bg-gray-100 p-3 text-sm font-medium border-r border-gray-300 flex items-center">
                  발주처
                </div>
                <div className="flex-1 p-3 text-sm flex items-center">{order.client}</div>
              </div>
              <div className="flex">
                <div className="w-24 bg-gray-100 p-3 text-sm font-medium border-r border-gray-300 flex items-center">
                  현장명
                </div>
                <div className="flex-1 p-3 text-sm flex items-center">{order.projectName}</div>
              </div>
            </div>

            {/* Row 2 */}
            <div className="grid grid-cols-2 border-b border-gray-300">
              <div className="flex border-r border-gray-300">
                <div className="w-24 bg-gray-100 p-3 text-sm font-medium border-r border-gray-300 flex items-center">
                  작업일자
                </div>
                <div className="flex-1 p-3 text-sm flex items-center">{today}</div>
              </div>
              <div className="flex">
                <div className="w-24 bg-gray-100 p-3 text-sm font-medium border-r border-gray-300 flex items-center">
                  LOT NO.
                </div>
                <div className="flex-1 p-3 text-sm flex items-center">{order.lotNo}</div>
              </div>
            </div>

            {/* Row 3 */}
            <div className="grid grid-cols-2">
              <div className="flex border-r border-gray-300">
                <div className="w-24 bg-gray-100 p-3 text-sm font-medium border-r border-gray-300 flex items-center">
                  납기일
                </div>
                <div className="flex-1 p-3 text-sm flex items-center">
                  {order.dueDate !== '-' ? new Date(order.dueDate).toLocaleDateString('ko-KR', {
                    year: 'numeric',
                    month: '2-digit',
                    day: '2-digit',
                  }).replace(/\. /g, '-').replace('.', '') : '-'}
                </div>
              </div>
              <div className="flex">
                <div className="w-24 bg-gray-100 p-3 text-sm font-medium border-r border-gray-300 flex items-center">
                  작업지시번호
                </div>
                <div className="flex-1 p-3 text-sm flex items-center">{order.workOrderNo}</div>
              </div>
            </div>
          </div>

          {/* 품목 테이블 */}
          <div className="border border-gray-300 mb-6">
            {/* 테이블 헤더 */}
            <div className="grid grid-cols-12 border-b border-gray-300 bg-gray-100">
              <div className="col-span-1 p-2 text-sm font-medium text-center border-r border-gray-300">No</div>
              <div className="col-span-4 p-2 text-sm font-medium text-center border-r border-gray-300">품목명</div>
              <div className="col-span-2 p-2 text-sm font-medium text-center border-r border-gray-300">층/부호</div>
              <div className="col-span-2 p-2 text-sm font-medium text-center border-r border-gray-300">규격</div>
              <div className="col-span-1 p-2 text-sm font-medium text-center border-r border-gray-300">수량</div>
              <div className="col-span-2 p-2 text-sm font-medium text-center">상태</div>
            </div>

            {/* 테이블 데이터 */}
            {items.length > 0 ? (
              items.map((item, index) => (
                <div
                  key={item.id}
                  className={`grid grid-cols-12 ${index < items.length - 1 ? 'border-b border-gray-300' : ''}`}
                >
                  <div className="col-span-1 p-2 text-sm text-center border-r border-gray-300">{item.no}</div>
                  <div className="col-span-4 p-2 text-sm border-r border-gray-300">{item.productName}</div>
                  <div className="col-span-2 p-2 text-sm text-center border-r border-gray-300">{item.floorCode}</div>
                  <div className="col-span-2 p-2 text-sm text-center border-r border-gray-300">{item.specification}</div>
                  <div className="col-span-1 p-2 text-sm text-center border-r border-gray-300">{item.quantity}</div>
                  <div className="col-span-2 p-2 text-sm text-center">{ITEM_STATUS_LABELS[item.status]}</div>
                </div>
              ))
            ) : (
              <div className="p-4 text-center text-muted-foreground text-sm">
                등록된 품목이 없습니다.
              </div>
            )}
          </div>

          {/* 작업내역 */}
          <div className="border border-gray-300 mb-6">
            {/* 검정 헤더 */}
            <div className="bg-gray-800 text-white p-2.5 text-sm font-medium text-center">
              {order.processName} 작업내역
            </div>

            {/* 수량 및 진행률 */}
            <div className="grid grid-cols-6 border-b border-gray-300">
              <div className="p-2 text-sm bg-gray-100 border-r border-gray-300 text-center font-medium">지시수량</div>
              <div className="p-2 text-sm border-r border-gray-300 text-center">{workStats.orderQty} EA</div>
              <div className="p-2 text-sm bg-gray-100 border-r border-gray-300 text-center font-medium">완료수량</div>
              <div className="p-2 text-sm border-r border-gray-300 text-center">{workStats.completedQty} EA</div>
              <div className="p-2 text-sm bg-gray-100 border-r border-gray-300 text-center font-medium">진행률</div>
              <div className="p-2 text-sm text-center font-medium text-blue-600">{workStats.progress}%</div>
            </div>

            {/* 상세 상태 */}
            <div className="grid grid-cols-6">
              <div className="p-2 text-sm bg-gray-100 border-r border-gray-300 text-center font-medium">대기</div>
              <div className="p-2 text-sm border-r border-gray-300 text-center">{workStats.waitingQty} EA</div>
              <div className="p-2 text-sm bg-gray-100 border-r border-gray-300 text-center font-medium">작업중</div>
              <div className="p-2 text-sm border-r border-gray-300 text-center">{workStats.inProgressQty} EA</div>
              <div className="p-2 text-sm bg-gray-100 border-r border-gray-300 text-center font-medium">완료</div>
              <div className="p-2 text-sm text-center">{workStats.completedQty} EA</div>
            </div>
          </div>

          {/* 특이 사항 */}
          <div className="border border-gray-300">
            <div className="bg-gray-800 text-white p-2.5 text-sm font-medium text-center">
              특이사항
            </div>
            <div className="p-4 min-h-[60px] text-sm">
              {order.note || '-'}
            </div>
          </div>
        </div>
      </DialogContent>
    </Dialog>
  );
}