import * as api from "@/lib/api"
import {
  badRequestError,
  forbiddenError,
  internalServerError,
  notFound,
  unauthorizedError,
} from "@/server/errors/trpc"
import { protectedProcedure, router } from "@/server/trpc"

import { friendTransactionsInput, staysInput } from "./input"
import {
  getFriendTransactionsSchema,
  getStaysSchema,
  getUserSchema,
} from "./output"
import { benefits, extendedUser, nextLevelPerks } from "./temp"

function fakingRequest<T>(payload: T): Promise<T> {
  return new Promise((resolve) => {
    setTimeout(() => {
      resolve(payload)
    }, 1500)
  })
}

export const userQueryRouter = router({
  get: protectedProcedure.query(async function ({ ctx }) {
    const apiResponse = await api.get(api.endpoints.v1.profile, {
      cache: "no-store",
      headers: {
        Authorization: `Bearer ${ctx.session.token.access_token}`,
      },
    })

    if (!apiResponse.ok) {
      switch (apiResponse.status) {
        case 400:
          throw badRequestError(apiResponse)
        case 401:
          throw unauthorizedError(apiResponse)
        case 403:
          throw forbiddenError(apiResponse)
        default:
          throw internalServerError(apiResponse)
      }
    }

    const apiJson = await apiResponse.json()
    if (!apiJson.data?.attributes) {
      throw notFound(apiJson)
    }

    const verifiedData = getUserSchema.safeParse(apiJson.data.attributes)
    if (!verifiedData.success) {
      throw internalServerError(verifiedData.error)
    }

    return {
      ...extendedUser,
      ...verifiedData.data,
      name: `${verifiedData.data.firstName} ${verifiedData.data.lastName}`,
    }
  }),

  benefits: router({
    current: protectedProcedure.query(async function (opts) {
      // TODO: Make request to get user data from Scandic API
      return await fakingRequest<typeof benefits>(benefits)
    }),
    nextLevel: protectedProcedure.query(async function (opts) {
      // TODO: Make request to get user data from Scandic API
      return await fakingRequest<typeof nextLevelPerks>(nextLevelPerks)
    }),
  }),

  stays: router({
    previous: protectedProcedure
      .input(staysInput)
      .query(async ({ ctx, input }) => {
        const { limit, cursor } = input

        const params = new URLSearchParams()
        params.set("limit", limit.toString())

        if (cursor) {
          params.set("offset", cursor)
        }

        const apiResponse = await api.get(
          api.endpoints.v1.previousStays,
          {
            headers: {
              Authorization: `Bearer ${ctx.session.token.access_token}`,
            },
          },
          params
        )

        if (!apiResponse.ok) {
          switch (apiResponse.status) {
            case 400:
              throw badRequestError(apiResponse)
            case 401:
              throw unauthorizedError(apiResponse)
            case 403:
              throw forbiddenError(apiResponse)
            default:
              throw internalServerError(apiResponse)
          }
        }

        const apiJson = await apiResponse.json()

        const verifiedData = getStaysSchema.safeParse(apiJson)
        if (!verifiedData.success) {
          throw internalServerError(verifiedData.error)
        }

        const nextCursor =
          verifiedData.data.links &&
            verifiedData.data.links.offset < verifiedData.data.links.totalCount
            ? verifiedData.data.links.offset
            : undefined

        return {
          data: verifiedData.data.data,
          nextCursor,
        }
      }),

    upcoming: protectedProcedure
      .input(staysInput)
      .query(async ({ ctx, input }) => {
        const { limit, cursor } = input

        const params = new URLSearchParams()
        params.set("limit", limit.toString())

        if (cursor) {
          params.set("offset", cursor)
        }

        const apiResponse = await api.get(
          api.endpoints.v1.upcomingStays,
          {
            headers: {
              Authorization: `Bearer ${ctx.session.token.access_token}`,
            },
          },
          params
        )

        if (!apiResponse.ok) {
          switch (apiResponse.status) {
            case 400:
              throw badRequestError(apiResponse)
            case 401:
              throw unauthorizedError(apiResponse)
            case 403:
              throw forbiddenError(apiResponse)
            default:
              throw internalServerError(apiResponse)
          }
        }

        const apiJson = await apiResponse.json()
        const verifiedData = getStaysSchema.safeParse(apiJson)
        if (!verifiedData.success) {
          throw internalServerError(verifiedData.error)
        }

        const nextCursor =
          verifiedData.data.links &&
            verifiedData.data.links.offset < verifiedData.data.links.totalCount
            ? verifiedData.data.links.offset
            : undefined

        return {
          data: verifiedData.data.data,
          nextCursor,
        }
      }),
  }),
  transaction: router({
    friendTransactions: protectedProcedure
      .input(friendTransactionsInput)
      .query(async (opts) => {
        try {
          const { limit, cursor } = opts.input

          const params = new URLSearchParams()
          params.set("limit", limit.toString())

          if (cursor) {
            params.set("offset", cursor.toString())
          }

          const apiResponse = await api.get(
            api.endpoints.v1.friendTransactions,
            {
              headers: {
                Authorization: `Bearer ${opts.ctx.session.token.access_token}`,
              },
            },
            params
          )

          if (!apiResponse.ok) {
            switch (apiResponse.status) {
              case 400:
                throw badRequestError()
              case 401:
                throw unauthorizedError()
              case 403:
                throw forbiddenError()
              default:
                throw internalServerError()
            }
          }

          const apiJson = await apiResponse.json()
          // const apiJson = friendTransactionsMockJson

          if (!apiJson.data?.length) {
            // throw internalServerError()
          }

          const verifiedData = getFriendTransactionsSchema.safeParse(apiJson)

          if (!verifiedData.success) {
            console.info(`Get Friend Transactions - Verified Data Error`)
            console.error(verifiedData.error)
            throw badRequestError()
          }

          const nextCursor =
            verifiedData.data.links &&
              verifiedData.data.links.offset < verifiedData.data.links.totalCount
              ? verifiedData.data.links.offset
              : undefined

          return {
            data: verifiedData.data.data.map(({ attributes }) => ({
              checkinDate: attributes.checkinDate,
              checkoutDate: attributes.checkoutDate,
              awardPoints: attributes.awardPoints,
              hotelName: attributes.hotelInformation?.hotelName,
              city: attributes.hotelInformation?.city,
              nights: attributes.nights,
              confirmationNumber: attributes.confirmationNumber,
            })),
            nextCursor,
          }
        } catch (error) {
          console.info(`Get Friend Transactions Error`)
          console.error(error)
          throw internalServerError()
        }
      }),
  }),
})