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

import { truncateTextAfterLastPeriod } from "../truncate"
import { getDestinationCityPageDescription } from "./destinationCityPage"
import { getDestinationCountryPageDescription } from "./destinationCountryPage"
import { getHotelPageDescription } from "./hotelPage"

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

export async function getDescription(data: RawMetadataSchema) {
  const metadata = data.web?.seo_metadata

  if (metadata?.description) {
    return metadata.description
  }

  let description: string | null = null
  switch (data.system.content_type_uid) {
    case PageContentTypeEnum.hotelPage:
      description = await getHotelPageDescription(data)
      break
    case PageContentTypeEnum.destinationCityPage:
      description = await getDestinationCityPageDescription(data)
      break
    case PageContentTypeEnum.destinationCountryPage:
      description = await getDestinationCountryPageDescription(data)
      break
    default:
      break
  }

  if (description) {
    return description
  }

  // Fallback descriptions from contentstack content
  if (data.preamble) {
    return truncateTextAfterLastPeriod(data.preamble)
  }
  if (data.header?.preamble) {
    return truncateTextAfterLastPeriod(data.header.preamble)
  }
  if (data.blocks?.length) {
    const jsonData = data.blocks[0].content?.content?.json
    // Finding the first paragraph with text
    const firstParagraph = jsonData?.children?.find(
      (child) => child.type === RTETypeEnum.p && child.children[0].text
    )

    if (firstParagraph?.children?.length) {
      return firstParagraph.children[0].text
        ? truncateTextAfterLastPeriod(firstParagraph.children[0].text)
        : ""
    }
  }

  return ""
}