frontend/src/components/ui/tabs.jsx

import * as React from "react"
import { cn } from "@/lib/utils"

const TabsContext = React.createContext(null)

const Tabs = ({ defaultValue, value, onValueChange, className, children, ...props }) => {
  const [internalValue, setInternalValue] = React.useState(defaultValue || "")
  const currentValue = value !== undefined ? value : internalValue
  const handleValueChange = onValueChange || setInternalValue

  return (
    <TabsContext.Provider value={{ value: currentValue, onValueChange: handleValueChange }}>
      <div className={cn("w-full", className)} {...props}>
        {children}
      </div>
    </TabsContext.Provider>
  )
}

const TabsList = React.forwardRef(({ className, ...props }, ref) => {
  return (
    <div
      ref={ref}
      className={cn(
        "inline-flex h-10 items-center justify-center rounded-md bg-slate-100 p-1 text-slate-500",
        className
      )}
      {...props}
    />
  )
})
TabsList.displayName = "TabsList"

const TabsTrigger = React.forwardRef(({ className, value, ...props }, ref) => {
  const context = React.useContext(TabsContext)
  const isActive = context?.value === value

  return (
    <button
      ref={ref}
      type="button"
      onClick={() => context?.onValueChange(value)}
      data-state={isActive ? "active" : "inactive"}
      className={cn(
        "inline-flex items-center justify-center whitespace-nowrap rounded-sm px-3 py-1.5 text-sm font-medium ring-offset-white transition-all focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-slate-950 focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50",
        isActive ? "bg-white text-slate-950 shadow-sm" : "text-slate-500 hover:text-slate-950",
        className
      )}
      {...props}
    />
  )
})
TabsTrigger.displayName = "TabsTrigger"

const TabsContent = React.forwardRef(({ className, value, ...props }, ref) => {
  const context = React.useContext(TabsContext)
  const isActive = context?.value === value

  if (!isActive) return null

  return (
    <div
      ref={ref}
      className={cn(
        "mt-2 ring-offset-white focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-slate-950 focus-visible:ring-offset-2",
        className
      )}
      {...props}
    />
  )
})
TabsContent.displayName = "TabsContent"

export { Tabs, TabsList, TabsTrigger, TabsContent }