"use client"

import * as React from "react"
import { cva, type VariantProps } from "class-variance-authority"
import { Tabs as TabsPrimitive } from "radix-ui"
import { motion } from "framer-motion"

import { cn } from "../lib/utils"

/** Shared spring for tab pill + trigger layout — keep in sync wherever `layout` runs alongside `TabsIndicator`. */
export const TABS_LAYOUT_SPRING = {
  type: "spring" as const,
  stiffness: 720,
  damping: 46,
  mass: 0.48,
}

function Tabs({
  className,
  orientation = "horizontal",
  ...props
}: React.ComponentProps<typeof TabsPrimitive.Root>) {
  return (
    <TabsPrimitive.Root
      data-slot="tabs"
      data-orientation={orientation}
      className={cn(
        "group/tabs flex gap-2 data-horizontal:flex-col",
        className
      )}
      {...props}
    />
  )
}

const tabsListVariants = cva(
  "group/tabs-list relative inline-flex w-fit items-center justify-center rounded-4xl p-[3px] text-muted-foreground group-data-horizontal/tabs:h-9 group-data-vertical/tabs:h-fit group-data-vertical/tabs:flex-col group-data-vertical/tabs:rounded-2xl data-[variant=line]:rounded-none",
  {
    variants: {
      variant: {
        default:
          "bg-muted/70 border border-black/4 shadow-[inset_0_1px_2px_rgba(0,0,0,0.06)] dark:bg-white/4 dark:border-white/4 dark:shadow-[inset_0_1px_3px_rgba(0,0,0,0.3)]",
        line: "gap-1 bg-transparent",
      },
    },
    defaultVariants: {
      variant: "default",
    },
  }
)

function TabsList({
  className,
  variant = "default",
  ...props
}: React.ComponentProps<typeof TabsPrimitive.List> &
  VariantProps<typeof tabsListVariants>) {
  return (
    <TabsPrimitive.List
      data-slot="tabs-list"
      data-variant={variant}
      className={cn(tabsListVariants({ variant }), className)}
      {...props}
    />
  )
}

function TabsTrigger({
  className,
  ...props
}: React.ComponentProps<typeof TabsPrimitive.Trigger>) {
  return (
    <TabsPrimitive.Trigger
      data-slot="tabs-trigger"
      className={cn(
        "relative z-1 inline-flex h-[calc(100%-1px)] flex-1 items-center justify-center gap-1.5 rounded-xl border border-transparent px-2 py-1 text-sm font-medium whitespace-nowrap text-foreground/50 transition-[color,background-color,border-color] duration-150 ease-[cubic-bezier(0.23,1,0.32,1)] group-data-vertical/tabs:w-full group-data-vertical/tabs:justify-start group-data-vertical/tabs:px-2.5 group-data-vertical/tabs:py-1.5 hover:text-foreground/80 focus-visible:border-ring disabled:pointer-events-none disabled:opacity-50 dark:text-muted-foreground/70 dark:hover:text-muted-foreground [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
        "group-data-[variant=line]/tabs-list:bg-transparent group-data-[variant=line]/tabs-list:data-active:bg-transparent group-data-[variant=line]/tabs-list:data-active:shadow-none dark:group-data-[variant=line]/tabs-list:data-active:border-transparent dark:group-data-[variant=line]/tabs-list:data-active:bg-transparent",
        "data-active:text-foreground data-active:hover:text-foreground dark:data-active:text-foreground dark:data-active:hover:text-foreground",
        "after:absolute after:bg-foreground after:opacity-0 after:transition-opacity group-data-horizontal/tabs:after:inset-x-0 group-data-horizontal/tabs:after:-bottom-1.25 group-data-horizontal/tabs:after:h-0.5 group-data-vertical/tabs:after:inset-y-0 group-data-vertical/tabs:after:-right-1 group-data-vertical/tabs:after:w-0.5 group-data-[variant=line]/tabs-list:data-active:after:opacity-100",
        className
      )}
      {...props}
    />
  )
}

/** Animated sliding pill indicator for TabsList (Apple-style). */
function TabsIndicator({
  className,
  layoutId = "tabs-indicator",
}: {
  className?: string
  layoutId?: string
}) {
  return (
    <motion.div
      layout="position"
      layoutId={layoutId}
      className={cn(
        "absolute inset-0 z-[-1] rounded-xl bg-background border border-black/6 shadow-[0_1px_3px_0_rgba(0,0,0,0.08)] dark:bg-white/7 dark:border-white/6 dark:shadow-[0_1px_3px_0_rgba(0,0,0,0.3),inset_0_1px_0_0_rgba(255,255,255,0.04)]",
        className
      )}
      transition={TABS_LAYOUT_SPRING}
    />
  )
}

function TabsContent({
  className,
  ...props
}: React.ComponentProps<typeof TabsPrimitive.Content>) {
  return (
    <TabsPrimitive.Content
      data-slot="tabs-content"
      className={cn(
        "flex-1 text-sm outline-none animate-in fade-in-0 slide-in-from-bottom-0.5 duration-100 ease-out",
        className
      )}
      {...props}
    />
  )
}

export { Tabs, TabsList, TabsTrigger, TabsIndicator, TabsContent, tabsListVariants }