import React from 'react';

interface ButtonProps extends React.ButtonHTMLAttributes<HTMLButtonElement> {
  variant?: 'primary' | 'secondary' | 'outline' | 'ghost' | 'danger';
  size?: 'sm' | 'md' | 'lg';
  isLoading?: boolean;
  fullWidth?: boolean;
  icon?: React.ReactNode;
  iconPosition?: 'left' | 'right';
}

const Button: React.FC<ButtonProps> = ({
  children,
  variant = 'primary',
  size = 'md',
  isLoading = false,
  fullWidth = false,
  icon,
  iconPosition = 'left',
  className = '',
  disabled,
  ...props
}) => {
  const baseClasses = 'inline-flex items-center justify-center font-medium transition-colors duration-200 rounded-md focus:outline-none focus:ring-2 focus:ring-offset-2';
  
  const variantClasses = {
    primary: 'bg-primary-500 text-white hover:bg-primary-600 focus:ring-primary-500',
    secondary: 'bg-secondary-500 text-white hover:bg-secondary-600 focus:ring-secondary-500',
    outline: 'border border-gray-300 dark:border-gray-700 bg-transparent hover:bg-gray-50 dark:hover:bg-gray-800 text-gray-700 dark:text-gray-200 focus:ring-primary-500',
    ghost: 'bg-transparent hover:bg-gray-100 dark:hover:bg-gray-800 text-gray-700 dark:text-gray-200 focus:ring-primary-500',
    danger: 'bg-red-600 text-white hover:bg-red-700 focus:ring-red-500',
  };
  
  const sizeClasses = {
    sm: 'px-3 py-1.5 text-sm',
    md: 'px-4 py-2 text-base',
    lg: 'px-6 py-3 text-lg',
  };
  
  const widthClass = fullWidth ? 'w-full' : '';
  const disabledClass = disabled || isLoading ? 'opacity-60 cursor-not-allowed' : '';
  
  return (
    <button
      className={`${baseClasses} ${variantClasses[variant]} ${sizeClasses[size]} ${widthClass} ${disabledClass} ${className}`}
      disabled={disabled || isLoading}
      {...props}
    >
      {isLoading && (
        <svg className="animate-spin -ml-1 mr-2 h-4 w-4 text-current\" xmlns="http://www.w3.org/2000/svg\" fill="none\" viewBox="0 0 24 24">
          <circle className="opacity-25\" cx="12\" cy="12\" r="10\" stroke="currentColor\" strokeWidth="4"></circle>
          <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"></path>
        </svg>
      )}
      
      {!isLoading && icon && iconPosition === 'left' && (
        <span className="mr-2">{icon}</span>
      )}
      
      {children}
      
      {!isLoading && icon && iconPosition === 'right' && (
        <span className="ml-2">{icon}</span>
      )}
    </button>
  );
};

export default Button;