import { forwardRef } from 'react';
import { motion, HTMLMotionProps } from 'framer-motion';
import { cn } from '../../lib/utils';
import { Loader2 } from 'lucide-react';

export type ButtonVariant = 'primary' | 'secondary' | 'ghost' | 'danger' | 'outline';
export type ButtonSize = 'sm' | 'md' | 'lg';

export interface ButtonProps extends Omit<HTMLMotionProps<'button'>, 'children'> {
  variant?: ButtonVariant;
  size?: ButtonSize;
  loading?: boolean;
  children?: React.ReactNode;
}

const variantStyles: Record<ButtonVariant, string> = {
  primary: 'bg-primary text-white hover:bg-primary-hover',
  secondary: 'bg-gray-100 text-gray-900 hover:bg-gray-200 dark:bg-gray-700 dark:text-gray-100 dark:hover:bg-gray-600',
  ghost: 'text-gray-600 hover:bg-gray-100 dark:text-gray-300 dark:hover:bg-gray-700',
  danger: 'bg-red-500 text-white hover:bg-red-600',
  outline: 'border border-gray-300 text-gray-700 hover:bg-gray-50 dark:border-gray-600 dark:text-gray-300 dark:hover:bg-gray-800',
};

const sizeStyles: Record<ButtonSize, string> = {
  sm: 'px-3 py-1.5 text-xs rounded-md',
  md: 'px-4 py-2 text-sm rounded-lg',
  lg: 'px-6 py-3 text-base rounded-lg',
};

export const Button = forwardRef<HTMLButtonElement, ButtonProps>(
  ({ className, variant = 'primary', size = 'md', loading, disabled, children, ...props }, ref) => {
    return (
      <motion.button
        ref={ref}
        whileTap={{ scale: 0.98 }}
        className={cn(
          'inline-flex items-center justify-center font-medium transition-colors duration-fast',
          'focus:outline-none focus-visible:ring-2 focus-visible:ring-primary focus-visible:ring-offset-2',
          'disabled:opacity-50 disabled:cursor-not-allowed',
          variantStyles[variant],
          sizeStyles[size],
          className
        )}
        disabled={disabled || loading}
        {...props}
      >
        {loading && <Loader2 className="w-4 h-4 mr-2 animate-spin" />}
        {children}
      </motion.button>
    );
  }
);

Button.displayName = 'Button';