"use client";

import * as React from "react";
import { Badge } from "@/components/ui/badge";
import {
  Accordion,
  AccordionContent,
  AccordionItem,
  AccordionTrigger,
} from "@/components/ui/accordion";
import { Sortable, SortableDragHandle, SortableItem } from "@/components/ui/sortable";
import { GripVertical } from "lucide-react";
import { complianceQuestions } from "@/db/schema/compliance";
import { ComplianceQuestionEditSheet } from "./compliance-question-edit-sheet";
import { ComplianceQuestionDeleteDialog } from "./compliance-question-delete-dialog";
import { updateComplianceQuestion } from "@/lib/compliance/services";
import { toast } from "sonner";
import { useRouter } from "next/navigation";

interface SortableQuestionItemProps {
  question: typeof complianceQuestions.$inferSelect;
  onSuccess?: () => void;
}

function SortableQuestionItem({ question, onSuccess }: SortableQuestionItemProps) {
  return (
    <SortableItem value={question.id} className="mb-1">
      <AccordionItem value={`question-${question.id}`}>
        <AccordionTrigger className="text-left py-1.5">
          <div className="flex items-center gap-2 w-full">
            <SortableDragHandle 
              variant="ghost" 
              size="sm" 
              className="p-0.5 h-auto hover:bg-muted/50 rounded"
            >
              <GripVertical className="h-3 w-3 text-muted-foreground" />
            </SortableDragHandle>
            <Badge variant="outline">{question.questionNumber}</Badge>
            <span className="font-medium flex-1 leading-tight">{question.questionText}</span>
            <div className="flex items-center gap-2">
              <ComplianceQuestionEditSheet question={question} onSuccess={onSuccess} />
              <ComplianceQuestionDeleteDialog question={question} onSuccess={onSuccess} />
            </div>
          </div>
        </AccordionTrigger>
        <AccordionContent>
          <div className="space-y-4 pt-2 pl-8">
            <div className="grid grid-cols-2 gap-4 text-sm">
              <div>
                <span className="font-medium">질문 타입:</span> 
                <Badge variant="secondary" className="ml-2">{question.questionType}</Badge>
              </div>
              <div>
                <span className="font-medium">필수 여부:</span> 
                <Badge variant="secondary" className="ml-2">
                  {question.isRequired ? '필수' : '선택'}
                </Badge>
              </div>
              <div>
                <span className="font-medium">상세 설명:</span> 
                <Badge variant="secondary" className="ml-2">
                  {question.hasDetailText ? '필요' : '불필요'}
                </Badge>
              </div>
              <div>
                <span className="font-medium">파일 업로드:</span> 
                <Badge variant="secondary" className="ml-2">
                  {question.hasFileUpload ? '필요' : '불필요'}
                </Badge>
              </div>
            </div>
            {question.conditionalValue && (
              <div className="text-sm text-muted-foreground">
                <span className="font-medium">조건:</span> {question.conditionalValue}
              </div>
            )}
          </div>
        </AccordionContent>
      </AccordionItem>
    </SortableItem>
  );
}

interface ComplianceQuestionsDraggableListProps {
  questions: typeof complianceQuestions.$inferSelect[];
  onSuccess?: () => void;
}

export function ComplianceQuestionsDraggableList({ 
  questions, 
  onSuccess 
}: ComplianceQuestionsDraggableListProps) {
  const [items, setItems] = React.useState(questions);
  const router = useRouter();

  React.useEffect(() => {
    setItems(questions);
  }, [questions]);

  const handleValueChange = async (newItems: typeof complianceQuestions.$inferSelect[]) => {
    setItems(newItems);
    
    // 새로운 순서로 displayOrder 업데이트
    const updatedItems = newItems.map((item, index) => ({
      ...item,
      displayOrder: index + 1,
    }));

    // 서버에 순서 업데이트
    await updateDisplayOrders(updatedItems);
  };

  const updateDisplayOrders = async (updatedItems: typeof complianceQuestions.$inferSelect[]) => {
    try {
      // 각 질문의 displayOrder를 순차적으로 업데이트
      await Promise.all(
        updatedItems.map((item, index) =>
          updateComplianceQuestion(item.id, {
            displayOrder: index + 1,
          })
        )
      );

      toast.success("질문 순서가 업데이트되었습니다.");
      router.refresh();
      
      if (onSuccess) {
        onSuccess();
      }
    } catch (error) {
      console.error("Error updating question order:", error);
      toast.error("질문 순서 업데이트 중 오류가 발생했습니다.");
    }
  };

  if (items.length === 0) {
    return (
      <div className="text-center py-8 text-muted-foreground">
        아직 질문이 없습니다. 질문을 추가해보세요.
      </div>
    );
  }

  return (
    <Sortable value={items} onValueChange={handleValueChange}>
      <Accordion type="single" collapsible className="w-full">
        {items.map((question) => (
          <SortableQuestionItem 
            key={question.id} 
            question={question} 
            onSuccess={onSuccess}
          />
        ))}
      </Accordion>
    </Sortable>
  );
}