import { z } from "zod"

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

import { soonestUpcomingStaysInput, staysInput } from "./input"
import { getUserSchema } from "./output"
import {
  benefits,
  extendedUser,
  nextLevelPerks,
  previousStays,
  upcomingStays,
} 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 }) {
    try {
      const apiResponse = await api.get(api.endpoints.v0.profile, {
        cache: "no-store",
        headers: {
          Authorization: `Bearer ${ctx.session.token.access_token}`,
        },
      })
      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()
      if (!apiJson.data?.length) {
        throw internalServerError()
      }

      const verifiedData = getUserSchema.safeParse(apiJson.data[0].attributes)
      if (!verifiedData.success) {
        console.info(`Get User - Verified Data Error`)
        console.error(verifiedData.error)
        throw badRequestError()
      }

      return {
        ...extendedUser,
        ...verifiedData.data,
        firstName: verifiedData.data.name,
        name: `${verifiedData.data.name} ${verifiedData.data.lastName}`,
      }
    } catch (error) {
      console.info(`Get User Error`)
      console.error(error)
      throw internalServerError()
    }
  }),
  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({
    soonestUpcoming: protectedProcedure
      .input(soonestUpcomingStaysInput)
      .query(async ({ input }) => {
        return upcomingStays.slice(0, input.limit)
      }),

    previous: protectedProcedure.input(staysInput).query(async (opts) => {
      const { perPage, page, cursor } = opts.input
      let nextCursor: typeof cursor | undefined = undefined
      const nrPages = Math.ceil(previousStays.length / perPage)

      let stays, nextPage
      if (cursor) {
        stays = previousStays.slice(cursor, perPage + cursor + 1)
        nextPage = cursor / perPage + 1
      } else {
        stays = previousStays.slice(
          page * perPage,
          page * perPage + perPage + 1
        )
      }

      if (
        (nextPage && nextPage < nrPages && stays.length == perPage + 1) ||
        (!nextPage && nrPages > 1)
      ) {
        const nextItem = stays.pop()
        if (nextItem) {
          nextCursor = previousStays.indexOf(nextItem)
        }
      } // TODO: Make request to get user data from Scandic API
      return { data: stays, nextCursor }
    }),

    upcoming: protectedProcedure.input(staysInput).query(async (opts) => {
      const { perPage, page, cursor } = opts.input
      let nextCursor: typeof cursor | undefined = undefined
      const nrPages = Math.ceil(upcomingStays.length / perPage)

      let stays, nextPage
      if (cursor) {
        stays = upcomingStays.slice(cursor, perPage + cursor + 1)
        nextPage = cursor / perPage + 1
      } else {
        stays = upcomingStays.slice(
          page * perPage,
          page * perPage + perPage + 1
        )
      }

      if (
        (nextPage && nextPage < nrPages && stays.length == perPage + 1) ||
        (!nextPage && nrPages > 1)
      ) {
        const nextItem = stays.pop()
        if (nextItem) {
          nextCursor = upcomingStays.indexOf(nextItem)
        }
      } // TODO: Make request to get user data from Scandic API
      return { data: stays, nextCursor }
    }),
  }),
})