import { type ButtonHTMLAttributes, forwardRef } from 'react';
import { cn } from '../../utils';

interface ButtonProps extends ButtonHTMLAttributes<HTMLButtonElement> {
  variant?: 'primary' | 'secondary' | 'outline' | 'ghost' | 'destructive';
  size?: 'sm' | 'md' | 'lg';
  isLoading?: boolean;
}

const Button = forwardRef<HTMLButtonElement, ButtonProps>(
  ({ className, variant = 'primary', size = 'md', isLoading = false, children, disabled, ...props }, ref) => {
    const baseClasses = 'inline-flex items-center justify-center rounded-lg font-medium transition-all duration-200 focus:outline-none focus:ring-2 focus:ring-offset-2 disabled:opacity-50 disabled:cursor-not-allowed';
    
    const variants = {
      primary: 'bg-primary-600 hover:bg-primary-700 text-white focus:ring-primary-500',
      secondary: 'bg-gray-200 hover:bg-gray-300 text-gray-900 dark:bg-gray-700 dark:hover:bg-gray-600 dark:text-gray-100 focus:ring-gray-500',
      outline: 'border border-gray-300 hover:bg-gray-50 text-gray-700 dark:border-gray-600 dark:hover:bg-gray-800 dark:text-gray-300 focus:ring-gray-500',
      ghost: 'hover:bg-gray-100 text-gray-700 dark:hover:bg-gray-800 dark:text-gray-300 focus:ring-gray-500',
      destructive: 'bg-red-600 hover:bg-red-700 text-white focus:ring-red-500',
    };
    
    const sizes = {
      sm: 'px-3 py-2 text-sm',
      md: 'px-4 py-2 text-sm',
      lg: 'px-6 py-3 text-base',
    };
    
    return (
      <button
        ref={ref}
        className={cn(baseClasses, variants[variant], sizes[size], className)}
        disabled={disabled || isLoading}
        {...props}
      >
        {isLoading ? (
          <>
            <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 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z" />
            </svg>
            Loading...
          </>
        ) : (
          children
        )}
      </button>
    );
  }
);

Button.displayName = 'Button';

export { Button };