/**
 * @ai-summary Reusable button component
 */

import React from 'react';
import { clsx } from 'clsx';

interface ButtonProps extends React.ButtonHTMLAttributes<HTMLButtonElement> {
  variant?: 'primary' | 'secondary' | 'danger';
  size?: 'sm' | 'md' | 'lg';
  loading?: boolean;
}

export const Button: React.FC<ButtonProps> = ({
  variant = 'primary',
  size = 'md',
  loading = false,
  disabled,
  children,
  className,
  ...props
}) => {
  const baseStyles = 'font-medium rounded-lg transition-colors focus:outline-none focus:ring-2 focus:ring-offset-2';
  
  const variants = {
    primary: 'bg-primary-500 text-white hover:bg-primary-600 focus:ring-primary-500 dark:bg-primary-600 dark:hover:bg-primary-700',
    secondary: 'bg-gray-200 text-gray-900 hover:bg-gray-300 focus:ring-gray-500 dark:bg-inactive dark:text-gray-100 dark:hover:bg-border',
    danger: 'bg-red-600 text-white hover:bg-red-700 focus:ring-red-500 dark:bg-red-700 dark:hover:bg-red-800',
  };
  
  const sizes = {
    sm: 'px-3 py-1.5 text-sm',
    md: 'px-4 py-2 text-base',
    lg: 'px-6 py-3 text-lg',
  };
  
  return (
    <button
      className={clsx(
        baseStyles,
        variants[variant],
        sizes[size],
        (disabled || loading) && 'opacity-50 cursor-not-allowed',
        className
      )}
      disabled={disabled || loading}
      {...props}
    >
      {loading ? (
        <span className="flex items-center">
          <svg className="animate-spin -ml-1 mr-2 h-4 w-4" fill="none" viewBox="0 0 24 24">
            <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4" />
            <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4z" />
          </svg>
          Loading...
        </span>
      ) : (
        children
      )}
    </button>
  );
};