import type { Location } from "@/types/trpc/routers/hotel/locations"

export function getSearchTokens(location: Location) {
  const tokens = [
    ...(location.keyWords?.map((x) => x.toLocaleLowerCase()) ?? []),
    location.name,
    location.type === "hotels"
      ? location.relationships.city.name
      : location.country,
  ]
    .filter(hasValue)
    .map((x) => x.toLocaleLowerCase())

  const additionalTokens: string[] = []

  tokens.forEach((token) => {
    const replaced = token
      .replace(/å/g, "a")
      .replace(/ä/g, "a")
      .replace(/ö/g, "o")
      .replace(/æ/g, "a")
      .replace(/ø/g, "o")
      .replace(/é/g, "e")
      .replace(/ü/g, "u")
    if (replaced !== token) {
      additionalTokens.push(replaced)
    }
  })

  const allTokens = [...new Set([...tokens, ...additionalTokens])]

  return allTokens
}

function hasValue(value: string | null | undefined): value is string {
  return !!value && value.length > 0
}