'use client';

import { FileSpreadsheet, FileText, Presentation, X } from 'lucide-react';
import { Button } from '@/components/ui/button';

const FILE_ICONS: Record<string, React.ElementType> = {
  xlsx: FileSpreadsheet,
  docx: FileText,
  pptx: Presentation,
};

interface FilePreviewProps {
  file: File;
  onRemove: () => void;
}

function formatFileSize(bytes: number): string {
  if (bytes < 1024) return `${bytes} B`;
  if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)} KB`;
  return `${(bytes / (1024 * 1024)).toFixed(1)} MB`;
}

export function FilePreview({ file, onRemove }: FilePreviewProps) {
  const ext = file.name.split('.').pop()?.toLowerCase() || '';
  const FileIcon = FILE_ICONS[ext] || FileText;

  return (
    <div className="flex items-center gap-3">
      <div className="flex size-10 items-center justify-center rounded-lg bg-secondary">
        <FileIcon className="size-5 text-foreground" />
      </div>
      <div className="flex flex-col min-w-0 flex-1">
        <span className="text-sm font-medium text-foreground truncate">
          {file.name}
        </span>
        <span className="text-xs text-muted-foreground">
          {formatFileSize(file.size)} · .{ext}
        </span>
      </div>
      <Button
        variant="ghost"
        size="icon-sm"
        className="ms-2 text-muted-foreground hover:text-foreground shrink-0"
        onClick={(e) => {
          e.stopPropagation();
          onRemove();
        }}
      >
        <X className="size-4" />
      </Button>
    </div>
  );
}