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import type React from 'react';
import { memo, useMemo } from 'react';
import type { Book } from '@/types/book';
import { useTranslation } from '@/hooks/useTranslation';
import { SHOW_UNREAD_STATUS_BADGE } from '@/services/constants';
import StatusBadge from './StatusBadge';

interface ReadingProgressProps {
  book: Book;
}

const getProgressPercentage = (book: Book) => {
  if (!book.progress || !book.progress[1]) {
    return null;
  }
  if (book.progress && book.progress[1] === 1) {
    return 100;
  }
  const percentage = Math.round((book.progress[0] / book.progress[1]) * 100);
  return Math.max(0, Math.min(100, percentage));
};

const ReadingProgress: React.FC<ReadingProgressProps> = memo(
  ({ book }) => {
    const _ = useTranslation();
    const progressPercentage = useMemo(() => getProgressPercentage(book), [book]);

    if (book.readingStatus === 'finished') {
      return (
        <div className='flex justify-start'>
          <StatusBadge status={book.readingStatus}>{_('Finished')}</StatusBadge>
        </div>
      );
    }

    if (book.readingStatus === 'unread') {
      if (SHOW_UNREAD_STATUS_BADGE) {
        return (
          <div className='flex justify-start'>
            <StatusBadge status={book.readingStatus}>{_('Unread')}</StatusBadge>
          </div>
        );
      } else {
        return <div className='flex justify-start'></div>;
      }
    }

    if (progressPercentage === null || Number.isNaN(progressPercentage)) {
      return <div className='flex justify-start'></div>;
    }

    return (
      <div
        className='text-neutral-content/70 flex justify-between text-xs'
        role='status'
        aria-label={`${progressPercentage}%`}
      >
        <span>{progressPercentage}%</span>
      </div>
    );
  },
  (prevProps, nextProps) => {
    return (
      prevProps.book.hash === nextProps.book.hash &&
      prevProps.book.updatedAt === nextProps.book.updatedAt &&
      prevProps.book.readingStatus === nextProps.book.readingStatus
    );
  },
);

ReadingProgress.displayName = 'ReadingProgress';

export default ReadingProgress;