import { z } from "zod"

import { discriminatedUnionArray } from "@/lib/discriminatedUnion"

import { removeMultipleSlashes } from "@/utils/url"

import {
  carouselCardsRefsSchema,
  carouselCardsSchema,
} from "../schemas/blocks/carouselCards"
import { systemSchema } from "../schemas/system"

import { DestinationOverviewPageEnum } from "@/types/enums/destinationOverviewPage"

const destinationOverviewPageCarouselCards = z
  .object({
    __typename: z.literal(
      DestinationOverviewPageEnum.ContentStack.blocks.CarouselCards
    ),
  })
  .merge(carouselCardsSchema)

export const blocksSchema = z.discriminatedUnion("__typename", [
  destinationOverviewPageCarouselCards,
])

export const destinationOverviewPageSchema = z.object({
  destination_overview_page: z.object({
    title: z.string(),
    blocks: discriminatedUnionArray(blocksSchema.options),
    system: systemSchema.merge(
      z.object({
        created_at: z.string(),
        updated_at: z.string(),
      })
    ),
  }),
  trackingProps: z.object({
    url: z.string(),
  }),
})

export const countryPageUrlSchema = z
  .object({
    all_destination_country_page: z.object({
      items: z.array(
        z
          .object({
            url: z.string(),
            system: systemSchema,
          })
          .transform((data) => {
            return {
              url: removeMultipleSlashes(`/${data.system.locale}/${data.url}`),
            }
          })
      ),
    }),
  })
  .transform(
    ({ all_destination_country_page }) => all_destination_country_page.items[0]
  )

/** REFS */
const destinationOverviewPageCarouselCardsRef = z
  .object({
    __typename: z.literal(
      DestinationOverviewPageEnum.ContentStack.blocks.CarouselCards
    ),
  })
  .merge(carouselCardsRefsSchema)

const blocksRefsSchema = z.discriminatedUnion("__typename", [
  destinationOverviewPageCarouselCardsRef,
])

export const destinationOverviewPageRefsSchema = z.object({
  destination_overview_page: z.object({
    blocks: discriminatedUnionArray(blocksRefsSchema.options).nullable(),
    system: systemSchema,
  }),
})