src/components/FilePreview.js

import React from 'react';
import './FilePreview.css';

function FilePreview({ file, onRemove }) {
  const formatFileSize = (bytes) => {
    if (bytes === 0) return '0 Bytes';
    const k = 1024;
    const sizes = ['Bytes', 'KB', 'MB', 'GB'];
    const i = Math.floor(Math.log(bytes) / Math.log(k));
    return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
  };

  return (
    <div className="file-preview">
      <div className="file-info">
        <span className="file-name">{file.name}</span>
        <span className="file-size">{formatFileSize(file.size)}</span>
      </div>
      <button className="remove-file" onClick={onRemove}>
        ×
      </button>
    </div>
  );
}

export default FilePreview;