"use client";

import { forwardRef } from "react";
import { cn } from "@/lib/utils";

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

export const Button = forwardRef<HTMLButtonElement, ButtonProps>(
  ({ className, variant = "primary", size = "md", loading, children, disabled, ...props }, ref) => {
    const base =
      "inline-flex items-center justify-center gap-2 font-semibold rounded-xl transition-all duration-200 focus:outline-none focus-visible:ring-2 focus-visible:ring-offset-2 disabled:opacity-50 disabled:cursor-not-allowed";

    const variants = {
      primary:
        "bg-gradient-to-br from-brand-green-light to-brand-green text-white shadow-md shadow-brand-green/25 hover:shadow-lg hover:shadow-brand-green/30 hover:brightness-105 focus-visible:ring-brand-green",
      secondary:
        "bg-white border-1.5 border-neutral-200 text-neutral-700 hover:border-brand-green hover:text-brand-green hover:bg-brand-green-50 focus-visible:ring-brand-green",
      ghost:
        "bg-transparent text-neutral-600 hover:bg-neutral-100 hover:text-neutral-900 focus-visible:ring-neutral-400",
      danger:
        "bg-red-500 text-white hover:bg-red-600 shadow-sm focus-visible:ring-red-500",
    };

    const sizes = {
      sm: "px-3 py-1.5 text-xs",
      md: "px-5 py-2.5 text-sm",
      lg: "px-7 py-3.5 text-base",
    };

    return (
      <button
        ref={ref}
        disabled={disabled || loading}
        className={cn(base, variants[variant], sizes[size], className)}
        {...props}
      >
        {loading && (
          <svg
            className="animate-spin 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>
        )}
        {children}
      </button>
    );
  }
);

Button.displayName = "Button";