import { PageContentTypeEnum } from "@scandic-hotels/trpc/enums/contentType"

import {
  getDestinationFilterSeoMetaTitle,
  getDestinationPageTitle,
} from "./destinationPage"
import { getTitlePrefix } from "./getTitlePrefix"
import { getHotelPageTitle } from "./hotelPage"

import type { RawMetadataSchema } from "@scandic-hotels/trpc/routers/contentstack/metadata/output"

function getTitleSuffix(contentType: string) {
  switch (contentType) {
    case PageContentTypeEnum.contentPage:
    case PageContentTypeEnum.collectionPage:
    case PageContentTypeEnum.campaignPage:
    case PageContentTypeEnum.campaignOverviewPage:
    case PageContentTypeEnum.destinationOverviewPage:
    case PageContentTypeEnum.destinationCityPage:
    case PageContentTypeEnum.destinationCountryPage:
      return "Scandic Hotels"
    default:
      return ""
  }
}

export async function getTitle(data: RawMetadataSchema) {
  const prefix = getTitlePrefix()
  const suffix = getTitleSuffix(data.system.content_type_uid)
  const metadata = data.web?.seo_metadata
  const isDestinationPage = [
    PageContentTypeEnum.destinationCityPage,
    PageContentTypeEnum.destinationCountryPage,
  ].includes(data.system.content_type_uid as PageContentTypeEnum)

  if (isDestinationPage) {
    const destinationFilterSeoMetaTitle = getDestinationFilterSeoMetaTitle(data)
    if (destinationFilterSeoMetaTitle) {
      return combineSegments([destinationFilterSeoMetaTitle, suffix])
    }
  }

  if (metadata?.title) {
    return combineSegments([prefix, metadata.title, suffix])
  }

  let title: string | null | undefined = null

  switch (data.system.content_type_uid) {
    case PageContentTypeEnum.hotelPage:
      title = await getHotelPageTitle(data)
      break
    case PageContentTypeEnum.destinationCityPage:
      title = await getDestinationPageTitle(data, "city")
      break
    case PageContentTypeEnum.destinationCountryPage:
      title = await getDestinationPageTitle(data, "country")
      break
    default:
      break
  }

  // Fallback titles from contentstack content
  title ||= data.web?.breadcrumbs?.title || data.heading || data.header?.heading

  return combineSegments([prefix, title, suffix])
}

function combineSegments(
  segments: (string | null | undefined)[],
  delimiter = " | "
) {
  return segments.filter(Boolean).join(delimiter).trim()
}