import type { ButtonHTMLAttributes, ReactNode } from 'react';

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

export function Button({ variant = 'primary', size = 'md', children, isLoading, className = '', disabled, ...props }: ButtonProps) {
  const baseStyles = 'inline-flex items-center justify-center font-semibold rounded-xl transition-all duration-200 cursor-pointer disabled:opacity-50 disabled:cursor-not-allowed';

  const variants = {
    primary: 'bg-primary-600 text-white hover:bg-primary-700 active:bg-primary-800',
    secondary: 'bg-gray-100 text-gray-700 hover:bg-gray-200',
    outline: 'border-2 border-primary-300 text-primary-600 hover:bg-primary-50',
    ghost: 'text-gray-600 hover:bg-gray-100',
    danger: 'bg-red-500 text-white hover:bg-red-600',
  };

  const sizes = {
    sm: 'px-3 py-1.5 text-sm',
    md: 'px-5 py-2.5 text-sm',
    lg: 'px-6 py-3 text-base',
  };

  return (
    <button
      className={`${baseStyles} ${variants[variant]} ${sizes[size]} ${className}`}
      disabled={disabled || isLoading}
      {...props}
    >
      {isLoading ? (
        <svg className="animate-spin -ml-1 mr-2 h-4 w-4" 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" />
          <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4z" />
        </svg>
      ) : null}
      {children}
    </button>
  );
}
