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

import { batchRequest } from "../graphql/batchRequest"
import {
  EntryByUrlBatch1,
  EntryByUrlBatch2,
  EntryByUrlBatch3,
} from "../graphql/Query/ResolveEntry.graphql"
import { validateEntryResolveSchema } from "../types/entry"

export function resolveEntryCacheKey(lang: Lang, url: string) {
  return `${lang}:${url}:resolveentry`
}
export async function resolve(url: string, lang = Lang.en) {
  const variables = { locale: lang, url: url || "/" }

  const cacheKey = resolveEntryCacheKey(variables.locale, variables.url)

  // The maximum amount of content types you can query is 6, therefor more
  // than that is being batched
  const response = await batchRequest([
    {
      document: EntryByUrlBatch1,
      variables,
      cacheOptions: {
        ttl: "max",
        key: cacheKey,
      },
    },
    {
      document: EntryByUrlBatch2,
      variables,
      cacheOptions: {
        ttl: "max",
        key: cacheKey,
      },
    },
    {
      document: EntryByUrlBatch3,
      variables,
      cacheOptions: {
        ttl: "max",
        key: cacheKey,
      },
    },
  ])
  const validatedData = validateEntryResolveSchema.safeParse(response.data)
  if (!validatedData.success) {
    return {
      error: validatedData.error,
    }
  }

  for (const value of Object.values(validatedData.data)) {
    if (value.total) {
      const { content_type_uid, uid } = value.items[0].system
      const seoFilters =
        "seo_filters" in value.items[0] ? value.items[0].seo_filters : null
      if (seoFilters && seoFilters.length > 0) {
        return {
          contentType: content_type_uid,
          uid,
          seoFilters: seoFilters.flatMap((f) =>
            f.filterConnection.edges?.flatMap((e) => e.node.slug)
          ),
        }
      }
      return {
        contentType: content_type_uid,
        uid,
      }
    }
  }

  return {
    contentType: null,
    uid: null,
  }
}