import { z } from "zod"

import {
  type FindMyBookingRoute,
  findMyBookingRoutes,
} from "@scandic-hotels/common/constants/routes/findMyBookingRoutes"
import { myStay } from "@scandic-hotels/common/constants/routes/myStay"
import { transformedImageVaultAssetSchema } from "@scandic-hotels/common/utils/imageVault"

import { Country } from "../../../types/country"
import { RTETypeEnum } from "../../../types/RTEenums"
import { destinationFilterSchema } from "../schemas/destinationFilters"
import { systemSchema } from "../schemas/system"

import type {
  Lang,
  LanguageSwitcherData,
} from "@scandic-hotels/common/constants/language"
import type { ImageVaultAsset } from "@scandic-hotels/common/utils/imageVault"

const metaDataJsonSchema = z.object({
  children: z.array(
    z.object({
      type: z.nativeEnum(RTETypeEnum),
      children: z.array(
        z.object({
          text: z.string().optional(),
        })
      ),
    })
  ),
})

const metaDataBlocksSchema = z
  .array(
    z.object({
      content: z
        .object({
          content: z
            .object({
              json: metaDataJsonSchema,
            })
            .nullish(),
        })
        .nullish(),
    })
  )
  .nullish()

const metaDataImageSchema = z.object({
  src: z.string().nullish(),
  altText: z.string().nullish(),
  altText_En: z.string().nullish(),
})

const metaDataHotelDataSchema = z
  .object({
    name: z.string(),
    detailedFacilities: z
      .array(
        z.object({
          name: z.string(),
        })
      )
      .nullish(),
    healthFacilities: z
      .array(
        z
          .object({
            content: z
              .object({
                images: z.array(metaDataImageSchema),
              })
              .nullish(),
          })
          .nullish()
      )
      .nullish(),
    translatedCityName: z.string(),
  })
  .nullish()

const metaDataAdditionalHotelDataSchema = z
  .object({
    gallery: z
      .object({
        heroImages: z.array(metaDataImageSchema).nullish(),
        smallerImages: z.array(metaDataImageSchema).nullish(),
      })
      .nullish(),
    hotelParking: z
      .object({
        nameInUrl: z.string().nullish(),
        elevatorPitch: z.string().nullish(),
      })
      .nullish(),
    healthAndFitness: z
      .object({
        nameInUrl: z.string().nullish(),
        elevatorPitch: z.string().nullish(),
      })
      .nullish(),
    hotelSpecialNeeds: z
      .object({
        nameInUrl: z.string().nullish(),
        elevatorPitch: z.string().nullish(),
      })
      .nullish(),
    meetingRooms: z
      .object({
        nameInUrl: z.string().nullish(),
        elevatorPitch: z.string().nullish(),
      })
      .nullish(),
    parkingImages: z
      .object({
        heroImages: z.array(metaDataImageSchema).nullish(),
      })
      .nullish(),
    accessibility: z
      .object({
        heroImages: z.array(metaDataImageSchema).nullish(),
      })
      .nullish(),
    conferencesAndMeetings: z
      .object({
        heroImages: z.array(metaDataImageSchema).nullish(),
      })
      .nullish(),
  })
  .nullish()

const metaDataHotelRestaurantsSchema = z
  .array(
    z.object({
      nameInUrl: z.string().nullish(),
      elevatorPitch: z.string().nullish(),
      name: z.string().nullish(),
      content: z
        .object({
          images: z.array(metaDataImageSchema).nullish(),
        })
        .nullish(),
    })
  )
  .nullish()

export const seoMetadataSchema = z
  .object({
    title: z.string().nullish(),
    description: z.string().nullish(),
    noindex: z.boolean().nullish(),
    seo_image: transformedImageVaultAssetSchema,
  })
  .nullish()

export const rawMetadataSchema = z.object({
  web: z
    .object({
      seo_metadata: seoMetadataSchema,
      breadcrumbs: z
        .object({
          title: z.string().nullish(),
        })
        .nullish(),
    })
    .nullish(),
  destination_settings: z
    .object({
      city_denmark: z.string().nullish(),
      city_finland: z.string().nullish(),
      city_germany: z.string().nullish(),
      city_poland: z.string().nullish(),
      city_norway: z.string().nullish(),
      city_sweden: z.string().nullish(),
      country: z.nativeEnum(Country).nullish(),
    })
    .nullish(),
  heading: z.string().nullish(),
  preamble: z
    .union([
      z.string(),
      z.object({
        first_column: z.string(),
      }),
    ])
    .transform((preamble) => {
      if (typeof preamble === "string") {
        return preamble
      }

      return preamble?.first_column || null
    })
    .nullish(),
  header: z
    .object({
      heading: z.string().nullish(),
      preamble: z.string().nullish(),
      hero_image: transformedImageVaultAssetSchema,
    })
    .nullish(),
  hero_image: transformedImageVaultAssetSchema,
  images: z
    .array(z.object({ image: transformedImageVaultAssetSchema }).nullish())
    .transform((images) =>
      images
        .map((image) => image?.image)
        .filter((image): image is ImageVaultAsset => !!image)
    )
    .nullish(),
  blocks: metaDataBlocksSchema,
  hotel_page_id: z
    .string()
    .nullish()
    .transform((id) => id?.trim() || null),
  hotelData: metaDataHotelDataSchema,
  additionalHotelData: metaDataAdditionalHotelDataSchema,
  hotelRestaurants: metaDataHotelRestaurantsSchema,
  subpageUrl: z.string().nullish(),
  destinationData: z
    .object({
      location: z.string().nullish(),
      filter: z.string().nullish(),
      filterType: z.enum(["facility", "surroundings"]).nullish(),
      hotelCount: z.number().nullish(),
      cities: z.array(z.string()).nullish(),
    })
    .nullish(),
  seo_filters: z
    .array(
      destinationFilterSchema.merge(
        z.object({ seo_metadata: seoMetadataSchema })
      )
    )
    .nullish(),
  system: systemSchema,
})

export interface RawMetadataSchema extends z.output<typeof rawMetadataSchema> {}

// Several pages are not currently routed within contentstack context.
// This function is used to generate the urls for these pages.
export function getNonContentstackUrls(lang: Lang, pathName: string) {
  if (isFindMyBookingUrl(pathName)) {
    const urls: LanguageSwitcherData = {}
    return Object.entries(findMyBookingRoutes).reduce((acc, [lang, url]) => {
      acc[lang as Lang] = { url }
      return urls
    }, urls)
  }

  if (Object.values(myStay).includes(pathName)) {
    const urls: LanguageSwitcherData = {}
    return Object.entries(myStay).reduce((acc, [lang, url]) => {
      acc[lang as Lang] = { url }
      return urls
    }, urls)
  }

  if (pathName.startsWith(hotelreservation(lang))) {
    return baseUrls
  }

  return { [lang]: { url: pathName } }
}

const baseUrls: LanguageSwitcherData = {
  da: { url: "/da/" },
  de: { url: "/de/" },
  en: { url: "/en/" },
  fi: { url: "/fi/" },
  no: { url: "/no/" },
  sv: { url: "/sv/" },
}

function hotelreservation(lang: Lang) {
  return `/${lang}/hotelreservation`
}

function isFindMyBookingUrl(value: string): value is FindMyBookingRoute {
  return Object.values(
    findMyBookingRoutes as unknown as readonly string[]
  ).includes(value)
}