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

import { cn } from "~/lib/utils.ts";

const buttonVariants = cva(
  // 全站只有这一套按钮(与动漫站同一思路):形状一律胶囊 / 正圆,颜色与材质只由 variant 决定,
  // 调用处只给布局(宽度、高度、间距),不改圆角、底色、边框、投影和字色。
  // 不是 <button> 的元素(Link、a)用 buttonVariants() 拿同一套类名
  "inline-flex shrink-0 cursor-pointer items-center justify-center gap-2 rounded-full text-sm font-medium whitespace-nowrap transition-[transform,background-color,border-color,color,box-shadow,opacity] duration-base ease-spring outline-none active:scale-[0.96] focus-visible:ring-[3px] focus-visible:ring-ring/50 disabled:pointer-events-none disabled:opacity-50 aria-invalid:border-destructive aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
  {
    variants: {
      variant: {
        // 主操作:半透明胶囊 + 沿边框流转的棱镜光谱。样式见 app.css 的 .pill-primary(--mat-pill-primary-*、--prism-*)
        default: "pill-primary",
        // 实心主操作:只给详情页头图区的唯一主操作(订阅)用,见 app.css 的 .pill-solid(--mat-pill-solid-*)
        solid: "pill-solid",
        // 次操作:描边胶囊。outline 与 secondary 是同一个样子,保留两个名字只为兼容旧调用
        outline: "pill-secondary",
        secondary: "pill-secondary",
        // 危险操作:同一胶囊,淡红底红字
        destructive:
          "border border-destructive/35 bg-destructive/10 text-destructive hover:bg-destructive/15 focus-visible:ring-destructive/25 dark:focus-visible:ring-destructive/40",
        // 只有文字 / 图标,悬停出淡底
        ghost: "text-muted-foreground hover:bg-foreground/[0.06] hover:text-foreground",
        link: "text-primary underline-offset-4 hover:underline active:scale-100",
      },
      size: {
        default: "h-9 px-4 py-2 has-[>svg]:px-3",
        xs: "h-6 gap-1 px-2 text-xs has-[>svg]:px-1.5 [&_svg:not([class*='size-'])]:size-3",
        sm: "h-8 gap-1.5 px-3 has-[>svg]:px-2.5",
        lg: "h-11 px-6 has-[>svg]:px-5",
        icon: "size-9",
        "icon-xs": "size-6 [&_svg:not([class*='size-'])]:size-3",
        "icon-sm": "size-8",
        "icon-lg": "size-10",
      },
    },
    defaultVariants: {
      variant: "default",
      size: "default",
    },
  },
);

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

  return (
    <Comp
      data-slot="button"
      data-variant={variant}
      data-size={size}
      className={cn(buttonVariants({ variant, size, className }))}
      {...props}
    />
  );
}

export { Button, buttonVariants };