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package com.supertokens.sdk.recipes.totp.usecases

import com.supertokens.sdk.common.Routes
import com.supertokens.sdk.common.SuperTokensStatus
import com.supertokens.sdk.common.SuperTokensStatusException
import com.supertokens.sdk.common.requests.VerifyTotpRequestDTO
import com.supertokens.sdk.common.responses.VerifyTotpResponseDTO
import com.supertokens.sdk.common.toStatus
import io.ktor.client.HttpClient
import io.ktor.client.call.body
import io.ktor.client.request.post
import io.ktor.client.request.setBody

data class InvalidTotpException(
    val currentNumberOfFailedAttempts: Long,
    val maxNumberOfFailedAttempts: Long,
) : SuperTokensStatusException(SuperTokensStatus.InvalidTotpCodeError)

data class InvalidTotpLimitException(
    val retryAfterMs: Long,
) : SuperTokensStatusException(SuperTokensStatus.InvalidTotpCodeError)

internal class VerifyTotpUseCase(
    private val client: HttpClient,
) {

  suspend fun verifyCode(totp: String): Boolean {
    val response =
        client.post(Routes.Totp.VERIFY) {
          setBody(
              VerifyTotpRequestDTO(
                  totp = totp,
              ))
        }

    val body = response.body()

    return when (body.status.toStatus()) {
      SuperTokensStatus.OK -> true
      SuperTokensStatus.InvalidTotpCodeError ->
          throw InvalidTotpException(
              currentNumberOfFailedAttempts = checkNotNull(body.currentNumberOfFailedAttempts),
              maxNumberOfFailedAttempts = checkNotNull(body.maxNumberOfFailedAttempts),
          )
      SuperTokensStatus.TotpLimitReachedError ->
          throw InvalidTotpLimitException(
              retryAfterMs = checkNotNull(body.retryAfterMs),
          )
      else -> false
    }
  }
}