import React, { useCallback, useEffect, useRef } from 'react'
import type { BubbleProps } from '@typebot.io/js'
import '@typebot.io/js/dist/web'

type Props = BubbleProps

declare global {
  namespace JSX {
    interface IntrinsicElements {
      'typebot-bubble': React.DetailedHTMLProps<
        React.HTMLAttributes<HTMLElement>,
        HTMLElement
      >
    }
  }
}

type BubbleElement = HTMLElement & Props

export const Bubble = (props: Props) => {
  const bubbleElement = useRef<BubbleElement | null>(null)

  const attachBubbleToDom = useCallback((props: Props) => {
    const newBubbleElement = document.createElement(
      'typebot-bubble'
    ) as BubbleElement
    bubbleElement.current = newBubbleElement
    injectPropsToElement(bubbleElement.current, props)
    document.body.prepend(bubbleElement.current)
  }, [])

  useEffect(() => {
    if (!bubbleElement.current) attachBubbleToDom(props)
    injectPropsToElement(bubbleElement.current as BubbleElement, props)
  }, [attachBubbleToDom, props])

  useEffect(() => {
    return () => {
      bubbleElement.current?.remove()
      bubbleElement.current = null
    }
  }, [])

  const injectPropsToElement = (element: BubbleElement, props: Props) => {
    Object.assign(element, props)
  }

  return null
}

export default Bubble