import { metrics } from "@opentelemetry/api"

import * as api from "@/lib/api"
import { getVerifiedUser } from "@/server/routers/user/query"
import { router, safeProtectedServiceProcedure } from "@/server/trpc"

import { getMembership } from "@/utils/user"

import {
  cancelBookingInput,
  createBookingInput,
  priceChangeInput,
} from "./input"
import { createBookingSchema } from "./output"

import type { Session } from "next-auth"

const meter = metrics.getMeter("trpc.bookings")
const createBookingCounter = meter.createCounter("trpc.bookings.create")
const createBookingSuccessCounter = meter.createCounter(
  "trpc.bookings.create-success"
)
const createBookingFailCounter = meter.createCounter(
  "trpc.bookings.create-fail"
)

const priceChangeCounter = meter.createCounter("trpc.bookings.price-change")
const priceChangeSuccessCounter = meter.createCounter(
  "trpc.bookings.price-change-success"
)
const priceChangeFailCounter = meter.createCounter(
  "trpc.bookings.price-change-fail"
)
const cancelBookingCounter = meter.createCounter("trpc.bookings.cancel")
const cancelBookingSuccessCounter = meter.createCounter(
  "trpc.bookings.cancel-success"
)
const cancelBookingFailCounter = meter.createCounter(
  "trpc.bookings.cancel-fail"
)

async function getMembershipNumber(
  session: Session | null
): Promise<string | undefined> {
  if (!session) return undefined

  const verifiedUser = await getVerifiedUser({ session })
  if (!verifiedUser || "error" in verifiedUser) {
    return undefined
  }

  const membership = getMembership(verifiedUser.data.memberships)
  return membership?.membershipNumber
}

export const bookingMutationRouter = router({
  create: safeProtectedServiceProcedure
    .input(createBookingInput)
    .mutation(async function ({ ctx, input }) {
      const accessToken = ctx.session?.token.access_token ?? ctx.serviceToken
      const { language, ...inputWithoutLang } = input
      const { hotelId, checkInDate, checkOutDate } = inputWithoutLang

      const loggingAttributes = {
        membershipNumber: await getMembershipNumber(ctx.session),
        checkInDate,
        checkOutDate,
        hotelId,
        language,
      }

      createBookingCounter.add(1, loggingAttributes)

      console.info(
        "api.booking.create start",
        JSON.stringify({
          query: loggingAttributes,
        })
      )
      const headers = {
        Authorization: `Bearer ${accessToken}`,
      }

      const apiResponse = await api.post(
        api.endpoints.v1.Booking.bookings,
        {
          headers,
          body: inputWithoutLang,
        },
        { language }
      )

      if (!apiResponse.ok) {
        const text = await apiResponse.text()
        createBookingFailCounter.add(1, {
          hotelId,
          checkInDate,
          checkOutDate,
          error_type: "http_error",
          error: JSON.stringify({
            status: apiResponse.status,
          }),
        })
        console.error(
          "api.booking.create error",
          JSON.stringify({
            query: loggingAttributes,
            error: {
              status: apiResponse.status,
              statusText: apiResponse.statusText,
              error: text,
            },
          })
        )
        return null
      }

      const apiJson = await apiResponse.json()
      const verifiedData = createBookingSchema.safeParse(apiJson)
      if (!verifiedData.success) {
        createBookingFailCounter.add(1, {
          hotelId,
          checkInDate,
          checkOutDate,
          error_type: "validation_error",
        })

        console.error(
          "api.booking.create validation error",
          JSON.stringify({
            query: loggingAttributes,
            error: verifiedData.error,
          })
        )
        return null
      }

      createBookingSuccessCounter.add(1, {
        hotelId,
        checkInDate,
        checkOutDate,
      })

      console.info(
        "api.booking.create success",
        JSON.stringify({
          query: loggingAttributes,
        })
      )

      return verifiedData.data
    }),
  priceChange: safeProtectedServiceProcedure
    .input(priceChangeInput)
    .mutation(async function ({ ctx, input }) {
      const accessToken = ctx.session?.token.access_token ?? ctx.serviceToken
      const { confirmationNumber } = input

      priceChangeCounter.add(1, { confirmationNumber })

      const headers = {
        Authorization: `Bearer ${accessToken}`,
      }

      const apiResponse = await api.put(
        api.endpoints.v1.Booking.priceChange(confirmationNumber),
        {
          headers,
          body: input,
        }
      )

      if (!apiResponse.ok) {
        const text = await apiResponse.text()
        priceChangeFailCounter.add(1, {
          confirmationNumber,
          error_type: "http_error",
          error: JSON.stringify({
            status: apiResponse.status,
          }),
        })
        console.error(
          "api.booking.priceChange error",
          JSON.stringify({
            query: { confirmationNumber },
            error: {
              status: apiResponse.status,
              statusText: apiResponse.statusText,
              error: text,
            },
          })
        )
        return null
      }

      const apiJson = await apiResponse.json()
      const verifiedData = createBookingSchema.safeParse(apiJson)
      if (!verifiedData.success) {
        priceChangeFailCounter.add(1, {
          confirmationNumber,
          error_type: "validation_error",
        })
        console.error(
          "api.booking.priceChange validation error",
          JSON.stringify({
            query: { confirmationNumber },
            error: verifiedData.error,
          })
        )
        return null
      }

      priceChangeSuccessCounter.add(1, { confirmationNumber })

      return verifiedData.data
    }),
  cancel: safeProtectedServiceProcedure
    .input(cancelBookingInput)
    .mutation(async function ({ ctx, input }) {
      const accessToken = ctx.session?.token.access_token ?? ctx.serviceToken
      const { confirmationNumber, language } = input

      const headers = {
        Authorization: `Bearer ${accessToken}`,
      }

      const cancellationReason = {
        reasonCode: "WEB-CANCEL",
        reason: "WEB-CANCEL",
      }

      const loggingAttributes = {
        confirmationNumber,
        language,
      }

      cancelBookingCounter.add(1, loggingAttributes)

      console.info(
        "api.booking.cancel start",
        JSON.stringify({
          request: loggingAttributes,
          headers,
        })
      )

      const apiResponse = await api.remove(
        api.endpoints.v1.Booking.cancel(confirmationNumber),
        {
          headers,
          body: JSON.stringify(cancellationReason),
        } as RequestInit,
        { language }
      )

      if (!apiResponse.ok) {
        const text = await apiResponse.text()
        cancelBookingFailCounter.add(1, {
          confirmationNumber,
          error_type: "http_error",
          error: JSON.stringify({
            status: apiResponse.status,
          }),
        })
        console.error(
          "api.booking.cancel error",
          JSON.stringify({
            error: {
              status: apiResponse.status,
              statusText: apiResponse.statusText,
              text,
            },
            query: loggingAttributes,
          })
        )
        return false
      }

      const apiJson = await apiResponse.json()
      const verifiedData = createBookingSchema.safeParse(apiJson)

      if (!verifiedData.success) {
        cancelBookingFailCounter.add(1, {
          confirmationNumber,
          error_type: "validation_error",
        })

        console.error(
          "api.booking.cancel validation error",
          JSON.stringify({
            query: loggingAttributes,
            error: verifiedData.error,
          })
        )
        return null
      }

      cancelBookingSuccessCounter.add(1, loggingAttributes)

      console.info(
        "api.booking.cancel success",
        JSON.stringify({
          query: loggingAttributes,
        })
      )

      return verifiedData.data
    }),
})