"use client";

import * as React from "react";
import { cn } from "@/lib/utils";

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

// React 19: ref is a regular prop — no forwardRef needed.
function Button({
  className,
  variant = "primary",
  size = "md",
  loading = false,
  disabled,
  children,
  ref,
  ...props
}: ButtonProps & { ref?: React.Ref<HTMLButtonElement> }) {
  return (
    <button
      ref={ref}
      disabled={disabled || loading}
      className={cn(
        "inline-flex items-center justify-center gap-2 rounded-lg font-medium transition-all duration-200",
        "focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-white",
        "disabled:cursor-not-allowed disabled:opacity-50",
        // Variants
        variant === "primary" &&
          "bg-blue-500 text-white hover:bg-blue-600 focus:ring-blue-500 shadow-sm shadow-blue-500/25",
        variant === "secondary" &&
          "bg-gray-100 text-gray-700 hover:bg-gray-200 focus:ring-gray-300 border border-gray-200",
        variant === "ghost" &&
          "bg-transparent text-gray-600 hover:bg-gray-100 hover:text-gray-900 focus:ring-gray-300",
        variant === "danger" &&
          "bg-red-600 text-white hover:bg-red-700 focus:ring-red-500 shadow-sm",
        // Sizes
        size === "sm" && "px-3 py-1.5 text-xs",
        size === "md" && "px-4 py-2.5 text-sm",
        size === "lg" && "px-6 py-3 text-base",
        className
      )}
      {...props}
    >
      {loading && (
        <svg
          className="h-4 w-4 animate-spin"
          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 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
          />
        </svg>
      )}
      {children}
    </button>
  );
}

export { Button };