import { useForm } from 'react-hook-form';
import { zodResolver } from '@hookform/resolvers/zod';
import { z } from 'zod';
import { showToast } from '@/lib/notify';
import { Typography } from '@/components/ui/typography';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Sheet } from '@/components/ui/sheet';
import { useAuth } from '../useAuth';
import { updateMe } from '../service';

const schema = z.object({
  name: z.string().trim(),
  email: z.string().trim().email('이메일 형식을 확인해 주십시오.').or(z.literal('')),
  contactNumber: z.string().trim(),
  password: z.string(),
  passwordConfirm: z.string(),
});

type FormValues = z.infer<typeof schema>;

const inputClass = 'text-foreground text-xs';
const blank = (v: string) => (v.trim() ? v.trim() : null);

export function ProfileSheet({ open, onClose }: { open: boolean; onClose: () => void }) {
  const { user } = useAuth();
  const {
    register,
    handleSubmit,
    setError,
    formState: { errors, isSubmitting },
  } = useForm<FormValues>({
    resolver: zodResolver(schema),
    defaultValues: {
      name: user?.name ?? '',
      email: user?.email ?? '',
      contactNumber: user?.contact ?? '',
      password: '',
      passwordConfirm: '',
    },
  });

  const onValid = async (v: FormValues) => {
    if (v.password && v.password.length < 4) {
      setError('password', { message: '비밀번호는 4자 이상으로 설정해 주십시오.' });
      return;
    }
    if (v.password && v.password !== v.passwordConfirm) {
      setError('passwordConfirm', { message: '비밀번호가 일치하지 않습니다.' });
      return;
    }
    try {
      await updateMe({
        name: blank(v.name),
        email: blank(v.email),
        contact_number: blank(v.contactNumber),
        ...(v.password ? { password: v.password } : {}),
      });
      showToast('내 정보가 수정되었습니다.', 'success');
      onClose();
    } catch (err) {
      showToast(err instanceof Error ? err.message : '내 정보 수정 실패', 'error');
    }
  };

  return (
    <Sheet open={open} title="내 정보 수정" onClose={onClose}>
      <form onSubmit={handleSubmit(onValid)} className="mt-6 space-y-4 text-xs font-mono">
        {/* 읽기 전용: 회사 / 로그인ID / 권한 */}
        <div className="rounded-md border border-border bg-muted/40 p-3 space-y-1.5">
          <div className="flex justify-between">
            <Typography variant="caption">회사</Typography>
            <Typography variant="caption" className="font-bold text-foreground">{user?.company}</Typography>
          </div>
          <div className="flex justify-between">
            <Typography variant="caption">로그인 ID</Typography>
            <Typography variant="caption" className="font-mono font-bold text-foreground">{user?.loginId}</Typography>
          </div>
          <div className="flex justify-between">
            <Typography variant="caption">권한등급</Typography>
            <Typography variant="caption" className="font-bold text-foreground">{user?.role}</Typography>
          </div>
        </div>

        {/* 이름 */}
        <div className="space-y-1">
          <Typography as="label" variant="label">이름</Typography>
          <Input id="profile-name" type="text" {...register('name')} className={inputClass} placeholder="이름" />
        </div>

        {/* 이메일 */}
        <div className="space-y-1">
          <Typography as="label" variant="label">이메일</Typography>
          <Input id="profile-email" type="email" {...register('email')} className={inputClass} placeholder="me@company.co.kr" />
          {errors.email && <p className="text-[10px] text-rose-500">{errors.email.message}</p>}
        </div>

        {/* 연락처 */}
        <div className="space-y-1">
          <Typography as="label" variant="label">연락처</Typography>
          <Input id="profile-phone" type="text" {...register('contactNumber')} className={inputClass} placeholder="010-XXXX-XXXX" />
        </div>

        {/* 비밀번호 변경(옵션) */}
        <div className="space-y-1">
          <Typography as="label" variant="label">비밀번호 변경 (변경 시에만 입력)</Typography>
          <Input
            id="profile-password"
            type="password"
            {...register('password')}
            className={inputClass}
            placeholder="비워두면 기존 비밀번호 유지"
            autoComplete="new-password"
          />
          {errors.password && <p className="text-[10px] text-rose-500">{errors.password.message}</p>}
        </div>

        {/* 비밀번호 확인 */}
        <div className="space-y-1">
          <Typography as="label" variant="label">비밀번호 확인</Typography>
          <Input
            id="profile-password-confirm"
            type="password"
            {...register('passwordConfirm')}
            className={inputClass}
            placeholder="비밀번호를 한 번 더 입력"
            autoComplete="new-password"
          />
          {errors.passwordConfirm && <p className="text-[10px] text-rose-500">{errors.passwordConfirm.message}</p>}
        </div>

        <div className="pt-4 flex items-center gap-2 border-t border-border mt-8 justify-end">
          <Button type="button" variant="outline" size="sm" onClick={onClose}>
            취소
          </Button>
          <Button type="submit" size="sm" disabled={isSubmitting}>
            변경사항 저장
          </Button>
        </div>
      </form>
    </Sheet>
  );
}