import {
  removeMultipleSlashes,
  removeTrailingSlash,
} from "@scandic-hotels/common/utils/url"

import { CHATBOT_HIDE_CONDITIONS, CHATBOT_SHOW_ROUTES } from "./constants"

import type { Lang } from "@scandic-hotels/common/constants/language"

export function shouldShowChatbot(
  pathname: string,
  searchParams: URLSearchParams | null,
  lang: Lang
): boolean {
  const cleanPathname = removeTrailingSlash(removeMultipleSlashes(pathname))
  const isOnShowRoute = CHATBOT_SHOW_ROUTES[lang].some((route) => {
    const fullRoute = removeTrailingSlash(
      removeMultipleSlashes(`/${lang}${route}`)
    )
    return cleanPathname.startsWith(fullRoute)
  })

  const isOnStartPage = cleanPathname === `/${lang}`

  if (!isOnShowRoute && !isOnStartPage) {
    return false
  }

  const isOnHideRoute = CHATBOT_HIDE_CONDITIONS.routes[lang].some((route) => {
    const fullRoute = removeTrailingSlash(
      removeMultipleSlashes(`/${lang}${route}`)
    )
    return cleanPathname === fullRoute
  })

  if (isOnHideRoute) {
    return false
  }

  if (searchParams) {
    const shouldHideOnSearchParams = CHATBOT_HIDE_CONDITIONS.searchParams.some(
      ({ key, value }) => {
        const paramValue = searchParams.get(key)
        return paramValue === value
      }
    )
    if (shouldHideOnSearchParams) {
      return false
    }
  }

  return true
}