/**
 * 스케줄 생성 확인 다이얼로그
 *
 * 스케줄 자동 생성 시 미리보기 결과를 표시하고 확인을 받는 다이얼로그입니다.
 */

"use client";

import React from "react";
import {
  AlertDialog,
  AlertDialogAction,
  AlertDialogCancel,
  AlertDialogContent,
  AlertDialogDescription,
  AlertDialogFooter,
  AlertDialogHeader,
  AlertDialogTitle,
} from "@/components/ui/alert-dialog";
import { Badge } from "@/components/ui/badge";
import { ScrollArea } from "@/components/ui/scroll-area";
import { Calendar, Plus, Trash2, RefreshCw } from "lucide-react";
import type { SchedulePreviewResult } from "./ScheduleGeneratorService";

interface ScheduleConfirmDialogProps {
  open: boolean;
  onOpenChange: (open: boolean) => void;
  preview: SchedulePreviewResult | null;
  onConfirm: () => void;
  onCancel: () => void;
  isLoading?: boolean;
}

export function ScheduleConfirmDialog({
  open,
  onOpenChange,
  preview,
  onConfirm,
  onCancel,
  isLoading = false,
}: ScheduleConfirmDialogProps) {
  if (!preview) return null;

  const { summary, toCreate, toDelete, toUpdate } = preview;

  return (
    <AlertDialog open={open} onOpenChange={onOpenChange}>
      <AlertDialogContent className="max-w-[95vw] sm:max-w-[600px]">
        <AlertDialogHeader>
          <AlertDialogTitle className="flex items-center gap-2 text-base sm:text-lg">
            <Calendar className="h-5 w-5" />
            스케줄 생성 확인
          </AlertDialogTitle>
          <AlertDialogDescription className="text-xs sm:text-sm">
            다음과 같이 스케줄이 변경됩니다. 계속하시겠습니까?
          </AlertDialogDescription>
        </AlertDialogHeader>

        {/* 요약 정보 */}
        <div className="grid grid-cols-3 gap-3 py-4">
          <div className="flex flex-col items-center rounded-lg border bg-green-50 p-3 dark:bg-green-900/20">
            <Plus className="mb-1 h-5 w-5 text-green-600" />
            <span className="text-2xl font-bold text-green-600">{summary.createCount}</span>
            <span className="text-muted-foreground text-xs">생성</span>
          </div>
          <div className="flex flex-col items-center rounded-lg border bg-red-50 p-3 dark:bg-red-900/20">
            <Trash2 className="mb-1 h-5 w-5 text-red-600" />
            <span className="text-2xl font-bold text-red-600">{summary.deleteCount}</span>
            <span className="text-muted-foreground text-xs">삭제</span>
          </div>
          <div className="flex flex-col items-center rounded-lg border bg-blue-50 p-3 dark:bg-blue-900/20">
            <RefreshCw className="mb-1 h-5 w-5 text-blue-600" />
            <span className="text-2xl font-bold text-blue-600">{summary.updateCount}</span>
            <span className="text-muted-foreground text-xs">수정</span>
          </div>
        </div>

        {/* 상세 정보 */}
        <ScrollArea className="max-h-[300px]">
          <div className="space-y-4">
            {/* 생성될 스케줄 */}
            {toCreate.length > 0 && (
              <div>
                <h4 className="mb-2 flex items-center gap-2 text-sm font-medium">
                  <Badge variant="default" className="bg-green-600">
                    생성
                  </Badge>
                  {toCreate.length}건
                </h4>
                <div className="space-y-1 rounded-md border p-2">
                  {toCreate.slice(0, 5).map((item, index) => (
                    <div key={index} className="flex items-center justify-between text-xs">
                      <span className="font-medium">{item.resource_name || item.resource_id}</span>
                      <span className="text-muted-foreground">
                        {item.start_date} ~ {item.end_date} / {item.plan_qty}개
                      </span>
                    </div>
                  ))}
                  {toCreate.length > 5 && (
                    <div className="text-muted-foreground text-center text-xs">... 외 {toCreate.length - 5}건</div>
                  )}
                </div>
              </div>
            )}

            {/* 삭제될 스케줄 */}
            {toDelete.length > 0 && (
              <div>
                <h4 className="mb-2 flex items-center gap-2 text-sm font-medium">
                  <Badge variant="destructive">삭제</Badge>
                  {toDelete.length}건
                </h4>
                <div className="space-y-1 rounded-md border border-red-200 bg-red-50/50 p-2 dark:border-red-800 dark:bg-red-900/10">
                  {toDelete.slice(0, 5).map((item, index) => (
                    <div key={index} className="flex items-center justify-between text-xs">
                      <span className="font-medium">{item.resource_name || item.resource_id}</span>
                      <span className="text-muted-foreground">
                        {item.start_date} ~ {item.end_date}
                      </span>
                    </div>
                  ))}
                  {toDelete.length > 5 && (
                    <div className="text-muted-foreground text-center text-xs">... 외 {toDelete.length - 5}건</div>
                  )}
                </div>
              </div>
            )}

            {/* 수정될 스케줄 */}
            {toUpdate.length > 0 && (
              <div>
                <h4 className="mb-2 flex items-center gap-2 text-sm font-medium">
                  <Badge variant="secondary">수정</Badge>
                  {toUpdate.length}건
                </h4>
                <div className="space-y-1 rounded-md border border-blue-200 bg-blue-50/50 p-2 dark:border-blue-800 dark:bg-blue-900/10">
                  {toUpdate.slice(0, 5).map((item, index) => (
                    <div key={index} className="flex items-center justify-between text-xs">
                      <span className="font-medium">{item.resource_name || item.resource_id}</span>
                      <span className="text-muted-foreground">
                        {item.start_date} ~ {item.end_date}
                      </span>
                    </div>
                  ))}
                  {toUpdate.length > 5 && (
                    <div className="text-muted-foreground text-center text-xs">... 외 {toUpdate.length - 5}건</div>
                  )}
                </div>
              </div>
            )}
          </div>
        </ScrollArea>

        {/* 총 수량 */}
        <div className="bg-muted flex items-center justify-between rounded-md p-3">
          <span className="text-sm font-medium">총 계획 수량</span>
          <span className="text-lg font-bold">{summary.totalQty.toLocaleString()}개</span>
        </div>

        <AlertDialogFooter className="gap-2 sm:gap-0">
          <AlertDialogCancel
            onClick={onCancel}
            disabled={isLoading}
            className="h-8 flex-1 text-xs sm:h-10 sm:flex-none sm:text-sm"
          >
            취소
          </AlertDialogCancel>
          <AlertDialogAction
            onClick={onConfirm}
            disabled={isLoading}
            className="h-8 flex-1 text-xs sm:h-10 sm:flex-none sm:text-sm"
          >
            {isLoading ? "처리 중..." : "확인 및 적용"}
          </AlertDialogAction>
        </AlertDialogFooter>
      </AlertDialogContent>
    </AlertDialog>
  );
}
