import React, { useState } from 'react';
import { Key, Eye, EyeOff } from 'lucide-react';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Form, FormControl, FormField, FormItem, FormLabel, FormMessage } from '@/components/ui/form';
import { useForm } from 'react-hook-form';
import { z } from 'zod';
import { zodResolver } from '@hookform/resolvers/zod';
import { useToast } from '@/hooks/useToast.wrapper';
import { AlertDialog, AlertDialogAction, AlertDialogCancel, AlertDialogContent, AlertDialogDescription, AlertDialogFooter, AlertDialogHeader, AlertDialogTitle, AlertDialogTrigger } from '@/components/ui/alert-dialog';

const passwordFormSchema = z.object({
  currentPassword: z.string().min(6, {
    message: '비밀번호는 6자 이상이어야 합니다.',
  }),
  newPassword: z.string().min(8, {
    message: '새 비밀번호는 8자 이상이어야 합니다.',
  }),
  confirmPassword: z.string().min(8, {
    message: '비밀번호 확인은 8자 이상이어야 합니다.',
  }),
}).refine((data) => data.newPassword === data.confirmPassword, {
  message: "비밀번호가 일치하지 않습니다.",
  path: ["confirmPassword"],
});

type PasswordFormValues = z.infer<typeof passwordFormSchema>;

const PasswordChangeForm = () => {
  const { toast } = useToast();
  const [showCurrentPassword, setShowCurrentPassword] = useState(false);
  const [showNewPassword, setShowNewPassword] = useState(false);
  const [showConfirmPassword, setShowConfirmPassword] = useState(false);

  const passwordForm = useForm<PasswordFormValues>({
    resolver: zodResolver(passwordFormSchema),
    defaultValues: {
      currentPassword: '',
      newPassword: '',
      confirmPassword: '',
    },
  });

  const onPasswordSubmit = (data: PasswordFormValues) => {
    console.log('Password form submitted:', data);
    // Here you would typically update the password
    toast({
      title: "비밀번호 변경 완료",
      description: "비밀번호가 성공적으로 변경되었습니다.",
    });
    passwordForm.reset();
  };

  return (
    <div className="space-y-2 mb-6">
      <h2 className="text-xl font-semibold neuro-text">비밀번호 변경</h2>
      <Form {...passwordForm}>
        <form onSubmit={passwordForm.handleSubmit(onPasswordSubmit)} className="space-y-6 neuro-flat p-6">
          <FormField
            control={passwordForm.control}
            name="currentPassword"
            render={({ field }) => (
              <FormItem>
                <FormLabel>현재 비밀번호</FormLabel>
                <FormControl>
                  <div className="relative">
                    <Input 
                      type={showCurrentPassword ? "text" : "password"} 
                      placeholder="현재 비밀번호를 입력하세요" 
                      {...field} 
                    />
                    <Button
                      type="button"
                      variant="ghost"
                      size="icon"
                      className="absolute right-1 top-1"
                      onClick={() => setShowCurrentPassword(!showCurrentPassword)}
                    >
                      {showCurrentPassword ? <EyeOff size={18} /> : <Eye size={18} />}
                    </Button>
                  </div>
                </FormControl>
                <FormMessage />
              </FormItem>
            )}
          />
          
          <FormField
            control={passwordForm.control}
            name="newPassword"
            render={({ field }) => (
              <FormItem>
                <FormLabel>새 비밀번호</FormLabel>
                <FormControl>
                  <div className="relative">
                    <Input 
                      type={showNewPassword ? "text" : "password"} 
                      placeholder="새 비밀번호를 입력하세요" 
                      {...field} 
                    />
                    <Button
                      type="button"
                      variant="ghost"
                      size="icon"
                      className="absolute right-1 top-1"
                      onClick={() => setShowNewPassword(!showNewPassword)}
                    >
                      {showNewPassword ? <EyeOff size={18} /> : <Eye size={18} />}
                    </Button>
                  </div>
                </FormControl>
                <FormMessage />
              </FormItem>
            )}
          />
          
          <FormField
            control={passwordForm.control}
            name="confirmPassword"
            render={({ field }) => (
              <FormItem>
                <FormLabel>비밀번호 확인</FormLabel>
                <FormControl>
                  <div className="relative">
                    <Input 
                      type={showConfirmPassword ? "text" : "password"} 
                      placeholder="새 비밀번호를 다시 입력하세요" 
                      {...field} 
                    />
                    <Button
                      type="button"
                      variant="ghost"
                      size="icon"
                      className="absolute right-1 top-1"
                      onClick={() => setShowConfirmPassword(!showConfirmPassword)}
                    >
                      {showConfirmPassword ? <EyeOff size={18} /> : <Eye size={18} />}
                    </Button>
                  </div>
                </FormControl>
                <FormMessage />
              </FormItem>
            )}
          />
          
          <AlertDialog>
            <AlertDialogTrigger asChild>
              <Button 
                type="button" 
                className="w-full bg-neuro-income text-white hover:bg-neuro-income/90"
              >
                <Key className="mr-1" size={18} />
                비밀번호 변경하기
              </Button>
            </AlertDialogTrigger>
            <AlertDialogContent>
              <AlertDialogHeader>
                <AlertDialogTitle>비밀번호 변경 확인</AlertDialogTitle>
                <AlertDialogDescription>
                  비밀번호를 변경하시겠습니까? 변경 후에는 새 비밀번호로 로그인해야 합니다.
                </AlertDialogDescription>
              </AlertDialogHeader>
              <AlertDialogFooter>
                <AlertDialogCancel>취소</AlertDialogCancel>
                <AlertDialogAction 
                  onClick={passwordForm.handleSubmit(onPasswordSubmit)}
                  className="bg-neuro-income hover:bg-neuro-income/90"
                >
                  변경
                </AlertDialogAction>
              </AlertDialogFooter>
            </AlertDialogContent>
          </AlertDialog>
        </form>
      </Form>
    </div>
  );
};

export default PasswordChangeForm;