"use client";

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";

const button = cva(
  "inline-flex items-center justify-center gap-2 font-semibold cursor-pointer " +
    "transition-all duration-200 ease-glass disabled:opacity-45 " +
    "disabled:cursor-default disabled:pointer-events-none select-none " +
    "focus-visible:outline-none focus-visible:ring-4 focus-visible:ring-accent-soft",
  {
    variants: {
      variant: {
        // Solid accent. The label is near-black because the accent is clamped
        // to a light-ish luminance in lib/colour.ts — the two decisions have
        // to stay in step or this button becomes unreadable on some albums.
        primary:
          "bg-accent text-[#08090d] shadow-[var(--e1)] hover:brightness-110 " +
          "active:scale-[0.97] active:brightness-95",
        ghost:
          "glass-hi text-ink hover:border-accent-line hover:bg-accent-soft active:scale-[0.97]",
        outline:
          "bg-transparent border border-edge-hi text-ink hover:border-accent-line " +
          "hover:bg-accent-soft hover:text-accent active:scale-[0.95]",
        quiet: "bg-transparent border border-edge-hi text-dim hover:text-ink hover:border-accent-line",
      },
      size: {
        sm: "text-caption px-3 py-1.5 rounded-pill",
        md: "text-callout px-4.5 py-2.5 rounded-control",
        pill: "text-callout px-4 py-2 rounded-pill",
      },
    },
    defaultVariants: { variant: "primary", size: "md" },
  },
);

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

export const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
  ({ className, variant, size, asChild, ...props }, ref) => {
    const Comp = asChild ? Slot : "button";
    return (
      <Comp ref={ref} className={cn(button({ variant, size }), className)} {...props} />
    );
  },
);
Button.displayName = "Button";