import * as React from "react";
import { Slot } from "@radix-ui/react-slot";
import { cva, type VariantProps } from "class-variance-authority";

import { cn } from "@/lib/utils";
import { LoaderIcon } from "lucide-react";

const buttonVariants = cva(
  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-[color,box-shadow] disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg:not([class*='size-'])]:size-4 shrink-0 [&_svg]:shrink-0 outline-none focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px] aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive cursor-pointer",
  {
    variants: {
      variant: {
        default:
          "bg-primary text-primary-foreground shadow-xs hover:bg-primary/90",
        destructive:
          "bg-destructive text-white shadow-xs hover:bg-destructive/90 focus-visible:ring-destructive/20 dark:focus-visible:ring-destructive/40",
        outline:
          "border border-input bg-background shadow-xs hover:bg-accent hover:text-accent-foreground",
        secondary:
          "bg-secondary text-secondary-foreground shadow-xs hover:bg-secondary/80",
        ghost: "hover:bg-accent hover:text-accent-foreground",
        link: "text-primary underline-offset-4 hover:underline",
      },
      size: {
        default: "h-9 px-4 py-2 has-[>svg]:px-3",
        sm: "h-8 rounded-md gap-1.5 px-3 has-[>svg]:px-2.5",
        lg: "h-10 rounded-md px-6 has-[>svg]:px-4",
        icon: "size-9",
      },
    },
    defaultVariants: {
      variant: "default",
      size: "default",
    },
  },
);

function Button({
  className,
  variant,
  size,
  asChild = false,
  loading = false,
  ...props
}: React.ComponentProps<"button"> &
  VariantProps<typeof buttonVariants> & {
    asChild?: boolean;
    loading?: boolean;
  }) {
  const Comp = asChild ? Slot : "button";

  return (
    <Comp
      className={cn(buttonVariants({ variant, size, className }), "relative")}
      disabled={loading || props.disabled}
      {...props}
    >
      <div className={cn("flex items-center gap-2", { "opacity-0": loading })}>
        {props.children}
      </div>
      {loading && (
        <div className="absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2">
          <LoaderIcon className="h-4 w-4 animate-spin" />
        </div>
      )}
    </Comp>
  );
}

export { Button, buttonVariants };