"use client";
import * as React from "react";
import { Slot } from "@radix-ui/react-slot";
import { cva, type VariantProps } from "class-variance-authority";
import { Loader2 } from "lucide-react";
import { cn } from "@/lib/utils";

const buttonVariants = cva(
  "inline-flex items-center justify-center gap-1.5 whitespace-nowrap rounded-md text-sm font-medium transition-[background-color,color,border-color,box-shadow,transform] duration-150 select-none disabled:pointer-events-none disabled:opacity-50 active:scale-[0.985] [&_svg]:shrink-0 [&_svg]:size-4",
  {
    variants: {
      variant: {
        primary: "bg-fg text-bg hover:opacity-90 shadow-xs",
        accent: "bg-accent text-accent-fg hover:bg-accent-strong shadow-xs",
        secondary: "bg-bg-muted text-fg hover:bg-border",
        outline: "border border-border bg-bg-elevated text-fg hover:bg-bg-subtle hover:border-border-strong",
        ghost: "text-fg-muted hover:bg-bg-muted hover:text-fg",
        danger: "bg-danger text-white hover:opacity-90",
        "danger-soft": "bg-danger-soft text-danger hover:bg-danger hover:text-white",
        link: "text-accent underline-offset-4 hover:underline h-auto p-0",
      },
      size: {
        xs: "tap h-7 px-2 text-xs rounded-sm [&_svg]:size-3.5",
        sm: "tap h-8 px-2.5 text-[13px]",
        md: "h-9 px-3.5",
        lg: "h-11 px-5 text-[15px] rounded-lg",
        icon: "tap size-8 p-0",
        "icon-sm": "tap size-7 p-0 rounded-sm [&_svg]:size-3.5",
        "icon-lg": "size-10 p-0 rounded-lg",
      },
    },
    defaultVariants: { variant: "primary", size: "md" },
  },
);

export interface ButtonProps extends React.ButtonHTMLAttributes<HTMLButtonElement>, VariantProps<typeof buttonVariants> {
  asChild?: boolean;
  loading?: boolean;
}

export const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(function Button(
  { className, variant, size, asChild = false, loading = false, children, disabled, ...props },
  ref,
) {
  if (asChild) {
    return (
      <Slot className={cn(buttonVariants({ variant, size }), className)} ref={ref} {...props}>
        {children}
      </Slot>
    );
  }
  return (
    <button className={cn(buttonVariants({ variant, size }), className)} ref={ref} disabled={disabled || loading} {...props}>
      {loading ? <Loader2 className="animate-spin" aria-hidden /> : null}
      {children}
    </button>
  );
});

export { buttonVariants };