// File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.

import type { RequestInit, RequestInfo, BodyInit } from './internal/builtin-types';
import type { HTTPMethod, PromiseOrValue, MergedRequestInit, FinalizedRequestInit } from './internal/types';
import { uuid4 } from './internal/utils/uuid';
import { validatePositiveInteger, isAbsoluteURL, safeJSON } from './internal/utils/values';
import { sleep } from './internal/utils/sleep';
export type { Logger, LogLevel } from './internal/utils/log';
import { castToError, isAbortError } from './internal/errors';
import type { APIResponseProps } from './internal/parse';
import { getPlatformHeaders } from './internal/detect-platform';
import * as Shims from './internal/shims';
import * as Opts from './internal/request-options';
import { stringifyQuery } from './internal/utils/query';
import { VERSION } from './version';
import * as Errors from './core/error';
import * as Pagination from './core/pagination';
import { AbstractPage, type CursorParams, CursorResponse } from './core/pagination';
import * as Uploads from './core/uploads';
import * as API from './resources/index';
import { APIPromise } from './core/api-promise';
import {
  Address,
  AddressCreateParams,
  AddressCreateResponse,
  AddressListParams,
  AddressRetrieveResponse,
  AddressStatus,
  Addresses,
  AddressesCursor,
} from './resources/addresses';
import {
  AgentTemplateListResponse,
  AgentTemplateRetrieveResponse,
  AgentTemplates,
} from './resources/agent-templates';
import { Balance, BalanceRetrieveResponse } from './resources/balance';
import {
  CallCreateParams,
  CallCreateResponse,
  CallHangupResponse,
  CallListParams,
  CallListResponse,
  CallListResponsesCursor,
  CallRetrieveResponse,
  Calls,
} from './resources/calls';
import {
  ConversationListMessagesParams,
  ConversationListParams,
  ConversationListResponse,
  ConversationListResponsesCursor,
  ConversationMarkAsReadResponse,
  ConversationRetrieveResponse,
  Conversations,
} from './resources/conversations';
import {
  EmailDomainCreateParams,
  EmailDomainCreateResponse,
  EmailDomainListResponse,
  EmailDomainRetrieveResponse,
  EmailDomainVerifyResponse,
  EmailDomains,
} from './resources/email-domains';
import {
  Introspect,
  IntrospectValidateEmailParams,
  IntrospectValidateEmailResponse,
  IntrospectValidatePhoneParams,
  IntrospectValidatePhoneResponse,
  LineType,
} from './resources/introspect';
import {
  Invitation,
  InvitationCancelResponse,
  InvitationCreateParams,
  InvitationCreateResponse,
  InvitationListParams,
  InvitationRetrieveResponse,
  Invitations,
  InvitationsCursor,
} from './resources/invitations';
import { Me, MeRetrieveResponse } from './resources/me';
import {
  Channel,
  Message,
  MessageContent,
  MessageListAttachmentsResponse,
  MessageListParams,
  MessageReactParams,
  MessageResponse,
  MessageSendParams,
  MessageShowTypingParams,
  MessageShowTypingResponse,
  MessageStatus,
  MessageType,
  Messages,
  MessagesCursor,
} from './resources/messages';
import {
  AvailablePhoneNumber,
  OwnedPhoneNumber,
  OwnedPhoneNumberPricing,
  OwnedPhoneNumbersCursor,
  PhoneNumberCapabilities,
  PhoneNumberListParams,
  PhoneNumberPricing,
  PhoneNumberPurchaseParams,
  PhoneNumberPurchaseResponse,
  PhoneNumberRequirementsParams,
  PhoneNumberRequirementsResponse,
  PhoneNumberRetrieveResponse,
  PhoneNumberSearchAvailableParams,
  PhoneNumberSearchAvailableResponse,
  PhoneNumberStatus,
  PhoneNumberType,
  PhoneNumberUpdateParams,
  PhoneNumberUpdateResponse,
  PhoneNumbers,
  Requirement,
  RequirementAcceptanceCriteria,
  RequirementFieldType,
  RequirementType,
} from './resources/phone-numbers';
import {
  RegulatoryDocument,
  RegulatoryDocumentCreateParams,
  RegulatoryDocumentCreateResponse,
  RegulatoryDocumentListParams,
  RegulatoryDocumentRetrieveResponse,
  RegulatoryDocumentUploadURLResponse,
  RegulatoryDocuments,
  RegulatoryDocumentsCursor,
} from './resources/regulatory-documents';
import {
  Template,
  TemplateCreateParams,
  TemplateListParams,
  TemplateSubmitParams,
  TemplateSyncParams,
  TemplateSyncResponse,
  Templates,
  TemplatesCursor,
  WhatsappCategory,
} from './resources/templates';
import {
  URLEscalateParams,
  URLEscalateResponse,
  URLListVerifiedParams,
  URLRetrieveDetailsResponse,
  URLSubmitForVerificationParams,
  URLSubmitForVerificationResponse,
  URLs,
  VerifiedURL,
  VerifiedURLsCursor,
} from './resources/urls';
import {
  AgentCreateParams,
  AgentCreateResponse,
  AgentListParams,
  AgentListVoicesParams,
  AgentListVoicesResponse,
  AgentRetrieveResponse,
  AgentTestParams,
  AgentTestResponse,
  AgentUpdateParams,
  AgentUpdateResponse,
  Agents,
} from './resources/agents/agents';
import {
  Broadcast,
  BroadcastCancelResponse,
  BroadcastChannel,
  BroadcastContact,
  BroadcastContactStatus,
  BroadcastContent,
  BroadcastCreateParams,
  BroadcastCreateResponse,
  BroadcastEscalateReviewResponse,
  BroadcastListParams,
  BroadcastMessageType,
  BroadcastProgress,
  BroadcastRescheduleParams,
  BroadcastRescheduleResponse,
  BroadcastRetrieveResponse,
  BroadcastRetryReviewResponse,
  BroadcastSendParams,
  BroadcastSendResponse,
  BroadcastStatus,
  BroadcastUpdateParams,
  BroadcastUpdateResponse,
  Broadcasts,
  BroadcastsCursor,
} from './resources/broadcasts/broadcasts';
import {
  Contact,
  ContactChannel,
  ContactCreateParams,
  ContactListParams,
  ContactMergeParams,
  ContactUpdateParams,
  Contacts,
  ContactsCursor,
} from './resources/contacts/contacts';
import {
  FunctionCreateParams,
  FunctionCreateResponse,
  FunctionDeleteResponse,
  FunctionDeployParams,
  FunctionDeployResponse,
  FunctionGetDeploymentResponse,
  FunctionListDeploymentsParams,
  FunctionListDeploymentsResponse,
  FunctionListEventTypesResponse,
  FunctionRetrieveResponse,
  FunctionRollbackDeploymentParams,
  FunctionRollbackDeploymentResponse,
  FunctionTailLogsParams,
  FunctionTailLogsResponse,
  FunctionUpdateParams,
  FunctionUpdateResponse,
  Functions,
} from './resources/functions/functions';
import { Number10dlc } from './resources/number-10dlc/number-10dlc';
import {
  Sender,
  SenderCreateParams,
  SenderListParams,
  SenderUpdateParams,
  SenderUpdateProfileParams,
  SenderUpdateProfileResponse,
  SenderUploadProfilePictureParams,
  SenderUploadProfilePictureResponse,
  SenderWebhook,
  Senders,
  SendersCursor,
  WebhookEvent,
  WebhookSecretResponse,
  WhatsappBusinessProfile,
  WhatsappBusinessProfileResponse,
  WhatsappBusinessProfileVertical,
} from './resources/senders/senders';
import {
  SubAccount,
  SubAccountCreateParams,
  SubAccountCreateResponse,
  SubAccountDeactivateResponse,
  SubAccountGetBalanceResponse,
  SubAccountListParams,
  SubAccountRetrieveResponse,
  SubAccountUpdateParams,
  SubAccountUpdateResponse,
  SubAccounts,
  SubAccountsCursor,
} from './resources/sub-accounts/sub-accounts';
import { type Fetch } from './internal/builtin-types';
import { HeadersLike, NullableHeaders, buildHeaders } from './internal/headers';
import { FinalRequestOptions, RequestOptions } from './internal/request-options';
import { readEnv } from './internal/utils/env';
import {
  type LogLevel,
  type Logger,
  formatRequestDetails,
  loggerFor,
  parseLogLevel,
} from './internal/utils/log';
import { isEmptyObj } from './internal/utils/values';

export interface ClientOptions {
  /**
   * Defaults to process.env['ZAVUDEV_API_KEY'].
   */
  apiKey?: string | undefined;

  /**
   * Override the default base URL for the API, e.g., "https://api.example.com/v2/"
   *
   * Defaults to process.env['ZAVUDEV_BASE_URL'].
   */
  baseURL?: string | null | undefined;

  /**
   * The maximum amount of time (in milliseconds) that the client should wait for a response
   * from the server before timing out a single request.
   *
   * Note that request timeouts are retried by default, so in a worst-case scenario you may wait
   * much longer than this timeout before the promise succeeds or fails.
   *
   * @unit milliseconds
   */
  timeout?: number | undefined;
  /**
   * Additional `RequestInit` options to be passed to `fetch` calls.
   * Properties will be overridden by per-request `fetchOptions`.
   */
  fetchOptions?: MergedRequestInit | undefined;

  /**
   * Specify a custom `fetch` function implementation.
   *
   * If not provided, we expect that `fetch` is defined globally.
   */
  fetch?: Fetch | undefined;

  /**
   * The maximum number of times that the client will retry a request in case of a
   * temporary failure, like a network error or a 5XX error from the server.
   *
   * @default 2
   */
  maxRetries?: number | undefined;

  /**
   * Default headers to include with every request to the API.
   *
   * These can be removed in individual requests by explicitly setting the
   * header to `null` in request options.
   */
  defaultHeaders?: HeadersLike | undefined;

  /**
   * Default query parameters to include with every request to the API.
   *
   * These can be removed in individual requests by explicitly setting the
   * param to `undefined` in request options.
   */
  defaultQuery?: Record<string, string | undefined> | undefined;

  /**
   * Set the log level.
   *
   * Defaults to process.env['ZAVUDEV_LOG'] or 'warn' if it isn't set.
   */
  logLevel?: LogLevel | undefined;

  /**
   * Set the logger.
   *
   * Defaults to globalThis.console.
   */
  logger?: Logger | undefined;
}

/**
 * API Client for interfacing with the Zavudev API.
 */
export class Zavudev {
  apiKey: string;

  baseURL: string;
  maxRetries: number;
  timeout: number;
  logger: Logger;
  logLevel: LogLevel | undefined;
  fetchOptions: MergedRequestInit | undefined;

  private fetch: Fetch;
  #encoder: Opts.RequestEncoder;
  protected idempotencyHeader?: string;
  private _options: ClientOptions;

  /**
   * API Client for interfacing with the Zavudev API.
   *
   * @param {string | undefined} [opts.apiKey=process.env['ZAVUDEV_API_KEY'] ?? undefined]
   * @param {string} [opts.baseURL=process.env['ZAVUDEV_BASE_URL'] ?? https://api.zavu.dev] - Override the default base URL for the API.
   * @param {number} [opts.timeout=1 minute] - The maximum amount of time (in milliseconds) the client will wait for a response before timing out.
   * @param {MergedRequestInit} [opts.fetchOptions] - Additional `RequestInit` options to be passed to `fetch` calls.
   * @param {Fetch} [opts.fetch] - Specify a custom `fetch` function implementation.
   * @param {number} [opts.maxRetries=2] - The maximum number of times the client will retry a request.
   * @param {HeadersLike} opts.defaultHeaders - Default headers to include with every request to the API.
   * @param {Record<string, string | undefined>} opts.defaultQuery - Default query parameters to include with every request to the API.
   */
  constructor({
    baseURL = readEnv('ZAVUDEV_BASE_URL'),
    apiKey = readEnv('ZAVUDEV_API_KEY'),
    ...opts
  }: ClientOptions = {}) {
    if (apiKey === undefined) {
      throw new Errors.ZavudevError(
        "The ZAVUDEV_API_KEY environment variable is missing or empty; either provide it, or instantiate the Zavudev client with an apiKey option, like new Zavudev({ apiKey: 'My API Key' }).",
      );
    }

    const options: ClientOptions = {
      apiKey,
      ...opts,
      baseURL: baseURL || `https://api.zavu.dev`,
    };

    this.baseURL = options.baseURL!;
    this.timeout = options.timeout ?? Zavudev.DEFAULT_TIMEOUT /* 1 minute */;
    this.logger = options.logger ?? console;
    const defaultLogLevel = 'warn';
    // Set default logLevel early so that we can log a warning in parseLogLevel.
    this.logLevel = defaultLogLevel;
    this.logLevel =
      parseLogLevel(options.logLevel, 'ClientOptions.logLevel', this) ??
      parseLogLevel(readEnv('ZAVUDEV_LOG'), "process.env['ZAVUDEV_LOG']", this) ??
      defaultLogLevel;
    this.fetchOptions = options.fetchOptions;
    this.maxRetries = options.maxRetries ?? 2;
    this.fetch = options.fetch ?? Shims.getDefaultFetch();
    this.#encoder = Opts.FallbackEncoder;

    const customHeadersEnv = readEnv('ZAVUDEV_CUSTOM_HEADERS');
    if (customHeadersEnv) {
      const parsed: Record<string, string> = {};
      for (const line of customHeadersEnv.split('\n')) {
        const colon = line.indexOf(':');
        if (colon >= 0) {
          parsed[line.substring(0, colon).trim()] = line.substring(colon + 1).trim();
        }
      }
      options.defaultHeaders = { ...parsed, ...options.defaultHeaders };
    }

    this._options = options;

    this.apiKey = apiKey;
  }

  /**
   * Create a new client instance re-using the same options given to the current client with optional overriding.
   */
  withOptions(options: Partial<ClientOptions>): this {
    const client = new (this.constructor as any as new (props: ClientOptions) => typeof this)({
      ...this._options,
      baseURL: this.baseURL,
      maxRetries: this.maxRetries,
      timeout: this.timeout,
      logger: this.logger,
      logLevel: this.logLevel,
      fetch: this.fetch,
      fetchOptions: this.fetchOptions,
      apiKey: this.apiKey,
      ...options,
    });
    return client;
  }

  /**
   * Check whether the base URL is set to its default.
   */
  #baseURLOverridden(): boolean {
    return this.baseURL !== 'https://api.zavu.dev';
  }

  protected defaultQuery(): Record<string, string | undefined> | undefined {
    return this._options.defaultQuery;
  }

  protected validateHeaders({ values, nulls }: NullableHeaders) {
    return;
  }

  protected async authHeaders(opts: FinalRequestOptions): Promise<NullableHeaders | undefined> {
    return buildHeaders([{ Authorization: `Bearer ${this.apiKey}` }]);
  }

  protected stringifyQuery(query: object | Record<string, unknown>): string {
    return stringifyQuery(query);
  }

  private getUserAgent(): string {
    return `${this.constructor.name}/JS ${VERSION}`;
  }

  protected defaultIdempotencyKey(): string {
    return `stainless-node-retry-${uuid4()}`;
  }

  protected makeStatusError(
    status: number,
    error: Object,
    message: string | undefined,
    headers: Headers,
  ): Errors.APIError {
    return Errors.APIError.generate(status, error, message, headers);
  }

  buildURL(
    path: string,
    query: Record<string, unknown> | null | undefined,
    defaultBaseURL?: string | undefined,
  ): string {
    const baseURL = (!this.#baseURLOverridden() && defaultBaseURL) || this.baseURL;
    const url =
      isAbsoluteURL(path) ?
        new URL(path)
      : new URL(baseURL + (baseURL.endsWith('/') && path.startsWith('/') ? path.slice(1) : path));

    const defaultQuery = this.defaultQuery();
    const pathQuery = Object.fromEntries(url.searchParams);
    if (!isEmptyObj(defaultQuery) || !isEmptyObj(pathQuery)) {
      query = { ...pathQuery, ...defaultQuery, ...query };
    }

    if (typeof query === 'object' && query && !Array.isArray(query)) {
      url.search = this.stringifyQuery(query);
    }

    return url.toString();
  }

  /**
   * Used as a callback for mutating the given `FinalRequestOptions` object.
   */
  protected async prepareOptions(options: FinalRequestOptions): Promise<void> {}

  /**
   * Used as a callback for mutating the given `RequestInit` object.
   *
   * This is useful for cases where you want to add certain headers based off of
   * the request properties, e.g. `method` or `url`.
   */
  protected async prepareRequest(
    request: RequestInit,
    { url, options }: { url: string; options: FinalRequestOptions },
  ): Promise<void> {}

  get<Rsp>(path: string, opts?: PromiseOrValue<RequestOptions>): APIPromise<Rsp> {
    return this.methodRequest('get', path, opts);
  }

  post<Rsp>(path: string, opts?: PromiseOrValue<RequestOptions>): APIPromise<Rsp> {
    return this.methodRequest('post', path, opts);
  }

  patch<Rsp>(path: string, opts?: PromiseOrValue<RequestOptions>): APIPromise<Rsp> {
    return this.methodRequest('patch', path, opts);
  }

  put<Rsp>(path: string, opts?: PromiseOrValue<RequestOptions>): APIPromise<Rsp> {
    return this.methodRequest('put', path, opts);
  }

  delete<Rsp>(path: string, opts?: PromiseOrValue<RequestOptions>): APIPromise<Rsp> {
    return this.methodRequest('delete', path, opts);
  }

  private methodRequest<Rsp>(
    method: HTTPMethod,
    path: string,
    opts?: PromiseOrValue<RequestOptions>,
  ): APIPromise<Rsp> {
    return this.request(
      Promise.resolve(opts).then((opts) => {
        return { method, path, ...opts };
      }),
    );
  }

  request<Rsp>(
    options: PromiseOrValue<FinalRequestOptions>,
    remainingRetries: number | null = null,
  ): APIPromise<Rsp> {
    return new APIPromise(this, this.makeRequest(options, remainingRetries, undefined));
  }

  private async makeRequest(
    optionsInput: PromiseOrValue<FinalRequestOptions>,
    retriesRemaining: number | null,
    retryOfRequestLogID: string | undefined,
  ): Promise<APIResponseProps> {
    const options = await optionsInput;
    const maxRetries = options.maxRetries ?? this.maxRetries;
    if (retriesRemaining == null) {
      retriesRemaining = maxRetries;
    }

    await this.prepareOptions(options);

    const { req, url, timeout } = await this.buildRequest(options, {
      retryCount: maxRetries - retriesRemaining,
    });

    await this.prepareRequest(req, { url, options });

    /** Not an API request ID, just for correlating local log entries. */
    const requestLogID = 'log_' + ((Math.random() * (1 << 24)) | 0).toString(16).padStart(6, '0');
    const retryLogStr = retryOfRequestLogID === undefined ? '' : `, retryOf: ${retryOfRequestLogID}`;
    const startTime = Date.now();

    loggerFor(this).debug(
      `[${requestLogID}] sending request`,
      formatRequestDetails({
        retryOfRequestLogID,
        method: options.method,
        url,
        options,
        headers: req.headers,
      }),
    );

    if (options.signal?.aborted) {
      throw new Errors.APIUserAbortError();
    }

    const controller = new AbortController();
    const response = await this.fetchWithTimeout(url, req, timeout, controller).catch(castToError);
    const headersTime = Date.now();

    if (response instanceof globalThis.Error) {
      const retryMessage = `retrying, ${retriesRemaining} attempts remaining`;
      if (options.signal?.aborted) {
        throw new Errors.APIUserAbortError();
      }
      // detect native connection timeout errors
      // deno throws "TypeError: error sending request for url (https://example/): client error (Connect): tcp connect error: Operation timed out (os error 60): Operation timed out (os error 60)"
      // undici throws "TypeError: fetch failed" with cause "ConnectTimeoutError: Connect Timeout Error (attempted address: example:443, timeout: 1ms)"
      // others do not provide enough information to distinguish timeouts from other connection errors
      const isTimeout =
        isAbortError(response) ||
        /timed? ?out/i.test(String(response) + ('cause' in response ? String(response.cause) : ''));
      if (retriesRemaining) {
        loggerFor(this).info(
          `[${requestLogID}] connection ${isTimeout ? 'timed out' : 'failed'} - ${retryMessage}`,
        );
        loggerFor(this).debug(
          `[${requestLogID}] connection ${isTimeout ? 'timed out' : 'failed'} (${retryMessage})`,
          formatRequestDetails({
            retryOfRequestLogID,
            url,
            durationMs: headersTime - startTime,
            message: response.message,
          }),
        );
        return this.retryRequest(options, retriesRemaining, retryOfRequestLogID ?? requestLogID);
      }
      loggerFor(this).info(
        `[${requestLogID}] connection ${isTimeout ? 'timed out' : 'failed'} - error; no more retries left`,
      );
      loggerFor(this).debug(
        `[${requestLogID}] connection ${isTimeout ? 'timed out' : 'failed'} (error; no more retries left)`,
        formatRequestDetails({
          retryOfRequestLogID,
          url,
          durationMs: headersTime - startTime,
          message: response.message,
        }),
      );
      if (isTimeout) {
        throw new Errors.APIConnectionTimeoutError();
      }
      throw new Errors.APIConnectionError({ cause: response });
    }

    const responseInfo = `[${requestLogID}${retryLogStr}] ${req.method} ${url} ${
      response.ok ? 'succeeded' : 'failed'
    } with status ${response.status} in ${headersTime - startTime}ms`;

    if (!response.ok) {
      const shouldRetry = await this.shouldRetry(response);
      if (retriesRemaining && shouldRetry) {
        const retryMessage = `retrying, ${retriesRemaining} attempts remaining`;

        // We don't need the body of this response.
        await Shims.CancelReadableStream(response.body);
        loggerFor(this).info(`${responseInfo} - ${retryMessage}`);
        loggerFor(this).debug(
          `[${requestLogID}] response error (${retryMessage})`,
          formatRequestDetails({
            retryOfRequestLogID,
            url: response.url,
            status: response.status,
            headers: response.headers,
            durationMs: headersTime - startTime,
          }),
        );
        return this.retryRequest(
          options,
          retriesRemaining,
          retryOfRequestLogID ?? requestLogID,
          response.headers,
        );
      }

      const retryMessage = shouldRetry ? `error; no more retries left` : `error; not retryable`;

      loggerFor(this).info(`${responseInfo} - ${retryMessage}`);

      const errText = await response.text().catch((err: any) => castToError(err).message);
      const errJSON = safeJSON(errText) as any;
      const errMessage = errJSON ? undefined : errText;

      loggerFor(this).debug(
        `[${requestLogID}] response error (${retryMessage})`,
        formatRequestDetails({
          retryOfRequestLogID,
          url: response.url,
          status: response.status,
          headers: response.headers,
          message: errMessage,
          durationMs: Date.now() - startTime,
        }),
      );

      const err = this.makeStatusError(response.status, errJSON, errMessage, response.headers);
      throw err;
    }

    loggerFor(this).info(responseInfo);
    loggerFor(this).debug(
      `[${requestLogID}] response start`,
      formatRequestDetails({
        retryOfRequestLogID,
        url: response.url,
        status: response.status,
        headers: response.headers,
        durationMs: headersTime - startTime,
      }),
    );

    return { response, options, controller, requestLogID, retryOfRequestLogID, startTime };
  }

  getAPIList<Item, PageClass extends Pagination.AbstractPage<Item> = Pagination.AbstractPage<Item>>(
    path: string,
    Page: new (...args: any[]) => PageClass,
    opts?: PromiseOrValue<RequestOptions>,
  ): Pagination.PagePromise<PageClass, Item> {
    return this.requestAPIList(
      Page,
      opts && 'then' in opts ?
        opts.then((opts) => ({ method: 'get', path, ...opts }))
      : { method: 'get', path, ...opts },
    );
  }

  requestAPIList<
    Item = unknown,
    PageClass extends Pagination.AbstractPage<Item> = Pagination.AbstractPage<Item>,
  >(
    Page: new (...args: ConstructorParameters<typeof Pagination.AbstractPage>) => PageClass,
    options: PromiseOrValue<FinalRequestOptions>,
  ): Pagination.PagePromise<PageClass, Item> {
    const request = this.makeRequest(options, null, undefined);
    return new Pagination.PagePromise<PageClass, Item>(this as any as Zavudev, request, Page);
  }

  async fetchWithTimeout(
    url: RequestInfo,
    init: RequestInit | undefined,
    ms: number,
    controller: AbortController,
  ): Promise<Response> {
    const { signal, method, ...options } = init || {};
    const abort = this._makeAbort(controller);
    if (signal) signal.addEventListener('abort', abort, { once: true });

    const timeout = setTimeout(abort, ms);

    const isReadableBody =
      ((globalThis as any).ReadableStream && options.body instanceof (globalThis as any).ReadableStream) ||
      (typeof options.body === 'object' && options.body !== null && Symbol.asyncIterator in options.body);

    const fetchOptions: RequestInit = {
      signal: controller.signal as any,
      ...(isReadableBody ? { duplex: 'half' } : {}),
      method: 'GET',
      ...options,
    };
    if (method) {
      // Custom methods like 'patch' need to be uppercased
      // See https://github.com/nodejs/undici/issues/2294
      fetchOptions.method = method.toUpperCase();
    }

    try {
      // use undefined this binding; fetch errors if bound to something else in browser/cloudflare
      return await this.fetch.call(undefined, url, fetchOptions);
    } finally {
      clearTimeout(timeout);
    }
  }

  private async shouldRetry(response: Response): Promise<boolean> {
    // Note this is not a standard header.
    const shouldRetryHeader = response.headers.get('x-should-retry');

    // If the server explicitly says whether or not to retry, obey.
    if (shouldRetryHeader === 'true') return true;
    if (shouldRetryHeader === 'false') return false;

    // Retry on request timeouts.
    if (response.status === 408) return true;

    // Retry on lock timeouts.
    if (response.status === 409) return true;

    // Retry on rate limits.
    if (response.status === 429) return true;

    // Retry internal errors.
    if (response.status >= 500) return true;

    return false;
  }

  private async retryRequest(
    options: FinalRequestOptions,
    retriesRemaining: number,
    requestLogID: string,
    responseHeaders?: Headers | undefined,
  ): Promise<APIResponseProps> {
    let timeoutMillis: number | undefined;

    // Note the `retry-after-ms` header may not be standard, but is a good idea and we'd like proactive support for it.
    const retryAfterMillisHeader = responseHeaders?.get('retry-after-ms');
    if (retryAfterMillisHeader) {
      const timeoutMs = parseFloat(retryAfterMillisHeader);
      if (!Number.isNaN(timeoutMs)) {
        timeoutMillis = timeoutMs;
      }
    }

    // About the Retry-After header: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Retry-After
    const retryAfterHeader = responseHeaders?.get('retry-after');
    if (retryAfterHeader && !timeoutMillis) {
      const timeoutSeconds = parseFloat(retryAfterHeader);
      if (!Number.isNaN(timeoutSeconds)) {
        timeoutMillis = timeoutSeconds * 1000;
      } else {
        timeoutMillis = Date.parse(retryAfterHeader) - Date.now();
      }
    }

    // If the API asks us to wait a certain amount of time, just do what it
    // says, but otherwise calculate a default
    if (timeoutMillis === undefined) {
      const maxRetries = options.maxRetries ?? this.maxRetries;
      timeoutMillis = this.calculateDefaultRetryTimeoutMillis(retriesRemaining, maxRetries);
    }
    await sleep(timeoutMillis);

    return this.makeRequest(options, retriesRemaining - 1, requestLogID);
  }

  private calculateDefaultRetryTimeoutMillis(retriesRemaining: number, maxRetries: number): number {
    const initialRetryDelay = 0.5;
    const maxRetryDelay = 8.0;

    const numRetries = maxRetries - retriesRemaining;

    // Apply exponential backoff, but not more than the max.
    const sleepSeconds = Math.min(initialRetryDelay * Math.pow(2, numRetries), maxRetryDelay);

    // Apply some jitter, take up to at most 25 percent of the retry time.
    const jitter = 1 - Math.random() * 0.25;

    return sleepSeconds * jitter * 1000;
  }

  async buildRequest(
    inputOptions: FinalRequestOptions,
    { retryCount = 0 }: { retryCount?: number } = {},
  ): Promise<{ req: FinalizedRequestInit; url: string; timeout: number }> {
    const options = { ...inputOptions };
    const { method, path, query, defaultBaseURL } = options;

    const url = this.buildURL(path!, query as Record<string, unknown>, defaultBaseURL);
    if ('timeout' in options) validatePositiveInteger('timeout', options.timeout);
    options.timeout = options.timeout ?? this.timeout;
    const { bodyHeaders, body } = this.buildBody({ options });
    const reqHeaders = await this.buildHeaders({ options: inputOptions, method, bodyHeaders, retryCount });

    const req: FinalizedRequestInit = {
      method,
      headers: reqHeaders,
      ...(options.signal && { signal: options.signal }),
      ...((globalThis as any).ReadableStream &&
        body instanceof (globalThis as any).ReadableStream && { duplex: 'half' }),
      ...(body && { body }),
      ...((this.fetchOptions as any) ?? {}),
      ...((options.fetchOptions as any) ?? {}),
    };

    return { req, url, timeout: options.timeout };
  }

  private async buildHeaders({
    options,
    method,
    bodyHeaders,
    retryCount,
  }: {
    options: FinalRequestOptions;
    method: HTTPMethod;
    bodyHeaders: HeadersLike;
    retryCount: number;
  }): Promise<Headers> {
    let idempotencyHeaders: HeadersLike = {};
    if (this.idempotencyHeader && method !== 'get') {
      if (!options.idempotencyKey) options.idempotencyKey = this.defaultIdempotencyKey();
      idempotencyHeaders[this.idempotencyHeader] = options.idempotencyKey;
    }

    const headers = buildHeaders([
      idempotencyHeaders,
      {
        Accept: 'application/json',
        'User-Agent': this.getUserAgent(),
        'X-Stainless-Retry-Count': String(retryCount),
        ...(options.timeout ? { 'X-Stainless-Timeout': String(Math.trunc(options.timeout / 1000)) } : {}),
        ...getPlatformHeaders(),
      },
      await this.authHeaders(options),
      this._options.defaultHeaders,
      bodyHeaders,
      options.headers,
    ]);

    this.validateHeaders(headers);

    return headers.values;
  }

  private _makeAbort(controller: AbortController) {
    // note: we can't just inline this method inside `fetchWithTimeout()` because then the closure
    //       would capture all request options, and cause a memory leak.
    return () => controller.abort();
  }

  private buildBody({ options }: { options: FinalRequestOptions }): {
    bodyHeaders: HeadersLike;
    body: BodyInit | undefined;
  } {
    const { body, headers: rawHeaders } = options;
    if (!body) {
      // A resource method always passes a `body` key when its operation defines a
      // request body, even if the caller omitted an optional body param. Keep the
      // content-type for those, and only elide it for operations with no body at
      // all (e.g. GET/DELETE).
      if (body == null && 'body' in options) {
        return this.#encoder({ body, headers: buildHeaders([rawHeaders]) });
      }
      return { bodyHeaders: undefined, body: undefined };
    }
    const headers = buildHeaders([rawHeaders]);
    if (
      // Pass raw type verbatim
      ArrayBuffer.isView(body) ||
      body instanceof ArrayBuffer ||
      body instanceof DataView ||
      (typeof body === 'string' &&
        // Preserve legacy string encoding behavior for now
        headers.values.has('content-type')) ||
      // `Blob` is superset of `File`
      ((globalThis as any).Blob && body instanceof (globalThis as any).Blob) ||
      // `FormData` -> `multipart/form-data`
      body instanceof FormData ||
      // `URLSearchParams` -> `application/x-www-form-urlencoded`
      body instanceof URLSearchParams ||
      // Send chunked stream (each chunk has own `length`)
      ((globalThis as any).ReadableStream && body instanceof (globalThis as any).ReadableStream)
    ) {
      return { bodyHeaders: undefined, body: body as BodyInit };
    } else if (
      typeof body === 'object' &&
      (Symbol.asyncIterator in body ||
        (Symbol.iterator in body && 'next' in body && typeof body.next === 'function'))
    ) {
      return { bodyHeaders: undefined, body: Shims.ReadableStreamFrom(body as AsyncIterable<Uint8Array>) };
    } else if (
      typeof body === 'object' &&
      headers.values.get('content-type') === 'application/x-www-form-urlencoded'
    ) {
      return {
        bodyHeaders: { 'content-type': 'application/x-www-form-urlencoded' },
        body: this.stringifyQuery(body),
      };
    } else {
      return this.#encoder({ body, headers });
    }
  }

  static Zavudev = this;
  static DEFAULT_TIMEOUT = 60000; // 1 minute

  static ZavudevError = Errors.ZavudevError;
  static APIError = Errors.APIError;
  static APIConnectionError = Errors.APIConnectionError;
  static APIConnectionTimeoutError = Errors.APIConnectionTimeoutError;
  static APIUserAbortError = Errors.APIUserAbortError;
  static NotFoundError = Errors.NotFoundError;
  static ConflictError = Errors.ConflictError;
  static RateLimitError = Errors.RateLimitError;
  static BadRequestError = Errors.BadRequestError;
  static AuthenticationError = Errors.AuthenticationError;
  static InternalServerError = Errors.InternalServerError;
  static PermissionDeniedError = Errors.PermissionDeniedError;
  static UnprocessableEntityError = Errors.UnprocessableEntityError;

  static toFile = Uploads.toFile;

  messages: API.Messages = new API.Messages(this);
  templates: API.Templates = new API.Templates(this);
  senders: API.Senders = new API.Senders(this);
  contacts: API.Contacts = new API.Contacts(this);
  broadcasts: API.Broadcasts = new API.Broadcasts(this);
  introspect: API.Introspect = new API.Introspect(this);
  phoneNumbers: API.PhoneNumbers = new API.PhoneNumbers(this);
  addresses: API.Addresses = new API.Addresses(this);
  regulatoryDocuments: API.RegulatoryDocuments = new API.RegulatoryDocuments(this);
  invitations: API.Invitations = new API.Invitations(this);
  urls: API.URLs = new API.URLs(this);
  balance: API.Balance = new API.Balance(this);
  subAccounts: API.SubAccounts = new API.SubAccounts(this);
  number10dlc: API.Number10dlc = new API.Number10dlc(this);
  me: API.Me = new API.Me(this);
  functions: API.Functions = new API.Functions(this);
  conversations: API.Conversations = new API.Conversations(this);
  calls: API.Calls = new API.Calls(this);
  agentTemplates: API.AgentTemplates = new API.AgentTemplates(this);
  emailDomains: API.EmailDomains = new API.EmailDomains(this);
  agents: API.Agents = new API.Agents(this);
}

Zavudev.Messages = Messages;
Zavudev.Templates = Templates;
Zavudev.Senders = Senders;
Zavudev.Contacts = Contacts;
Zavudev.Broadcasts = Broadcasts;
Zavudev.Introspect = Introspect;
Zavudev.PhoneNumbers = PhoneNumbers;
Zavudev.Addresses = Addresses;
Zavudev.RegulatoryDocuments = RegulatoryDocuments;
Zavudev.Invitations = Invitations;
Zavudev.URLs = URLs;
Zavudev.Balance = Balance;
Zavudev.SubAccounts = SubAccounts;
Zavudev.Number10dlc = Number10dlc;
Zavudev.Me = Me;
Zavudev.Functions = Functions;
Zavudev.Conversations = Conversations;
Zavudev.Calls = Calls;
Zavudev.AgentTemplates = AgentTemplates;
Zavudev.EmailDomains = EmailDomains;
Zavudev.Agents = Agents;

export declare namespace Zavudev {
  export type RequestOptions = Opts.RequestOptions;

  export import Cursor = Pagination.Cursor;
  export { type CursorParams as CursorParams, type CursorResponse as CursorResponse };

  export {
    Messages as Messages,
    type Channel as Channel,
    type Message as Message,
    type MessageContent as MessageContent,
    type MessageResponse as MessageResponse,
    type MessageStatus as MessageStatus,
    type MessageType as MessageType,
    type MessageListAttachmentsResponse as MessageListAttachmentsResponse,
    type MessageShowTypingResponse as MessageShowTypingResponse,
    type MessagesCursor as MessagesCursor,
    type MessageListParams as MessageListParams,
    type MessageReactParams as MessageReactParams,
    type MessageSendParams as MessageSendParams,
    type MessageShowTypingParams as MessageShowTypingParams,
  };

  export {
    Templates as Templates,
    type Template as Template,
    type WhatsappCategory as WhatsappCategory,
    type TemplateSyncResponse as TemplateSyncResponse,
    type TemplatesCursor as TemplatesCursor,
    type TemplateCreateParams as TemplateCreateParams,
    type TemplateListParams as TemplateListParams,
    type TemplateSubmitParams as TemplateSubmitParams,
    type TemplateSyncParams as TemplateSyncParams,
  };

  export {
    Senders as Senders,
    type Sender as Sender,
    type SenderWebhook as SenderWebhook,
    type WebhookEvent as WebhookEvent,
    type WebhookSecretResponse as WebhookSecretResponse,
    type WhatsappBusinessProfile as WhatsappBusinessProfile,
    type WhatsappBusinessProfileResponse as WhatsappBusinessProfileResponse,
    type WhatsappBusinessProfileVertical as WhatsappBusinessProfileVertical,
    type SenderUpdateProfileResponse as SenderUpdateProfileResponse,
    type SenderUploadProfilePictureResponse as SenderUploadProfilePictureResponse,
    type SendersCursor as SendersCursor,
    type SenderCreateParams as SenderCreateParams,
    type SenderUpdateParams as SenderUpdateParams,
    type SenderListParams as SenderListParams,
    type SenderUpdateProfileParams as SenderUpdateProfileParams,
    type SenderUploadProfilePictureParams as SenderUploadProfilePictureParams,
  };

  export {
    Contacts as Contacts,
    type Contact as Contact,
    type ContactChannel as ContactChannel,
    type ContactsCursor as ContactsCursor,
    type ContactCreateParams as ContactCreateParams,
    type ContactUpdateParams as ContactUpdateParams,
    type ContactListParams as ContactListParams,
    type ContactMergeParams as ContactMergeParams,
  };

  export {
    Broadcasts as Broadcasts,
    type Broadcast as Broadcast,
    type BroadcastChannel as BroadcastChannel,
    type BroadcastContact as BroadcastContact,
    type BroadcastContactStatus as BroadcastContactStatus,
    type BroadcastContent as BroadcastContent,
    type BroadcastMessageType as BroadcastMessageType,
    type BroadcastProgress as BroadcastProgress,
    type BroadcastStatus as BroadcastStatus,
    type BroadcastCreateResponse as BroadcastCreateResponse,
    type BroadcastRetrieveResponse as BroadcastRetrieveResponse,
    type BroadcastUpdateResponse as BroadcastUpdateResponse,
    type BroadcastCancelResponse as BroadcastCancelResponse,
    type BroadcastEscalateReviewResponse as BroadcastEscalateReviewResponse,
    type BroadcastRescheduleResponse as BroadcastRescheduleResponse,
    type BroadcastRetryReviewResponse as BroadcastRetryReviewResponse,
    type BroadcastSendResponse as BroadcastSendResponse,
    type BroadcastsCursor as BroadcastsCursor,
    type BroadcastCreateParams as BroadcastCreateParams,
    type BroadcastUpdateParams as BroadcastUpdateParams,
    type BroadcastListParams as BroadcastListParams,
    type BroadcastRescheduleParams as BroadcastRescheduleParams,
    type BroadcastSendParams as BroadcastSendParams,
  };

  export {
    Introspect as Introspect,
    type LineType as LineType,
    type IntrospectValidateEmailResponse as IntrospectValidateEmailResponse,
    type IntrospectValidatePhoneResponse as IntrospectValidatePhoneResponse,
    type IntrospectValidateEmailParams as IntrospectValidateEmailParams,
    type IntrospectValidatePhoneParams as IntrospectValidatePhoneParams,
  };

  export {
    PhoneNumbers as PhoneNumbers,
    type AvailablePhoneNumber as AvailablePhoneNumber,
    type OwnedPhoneNumber as OwnedPhoneNumber,
    type OwnedPhoneNumberPricing as OwnedPhoneNumberPricing,
    type PhoneNumberCapabilities as PhoneNumberCapabilities,
    type PhoneNumberPricing as PhoneNumberPricing,
    type PhoneNumberStatus as PhoneNumberStatus,
    type PhoneNumberType as PhoneNumberType,
    type Requirement as Requirement,
    type RequirementAcceptanceCriteria as RequirementAcceptanceCriteria,
    type RequirementFieldType as RequirementFieldType,
    type RequirementType as RequirementType,
    type PhoneNumberRetrieveResponse as PhoneNumberRetrieveResponse,
    type PhoneNumberUpdateResponse as PhoneNumberUpdateResponse,
    type PhoneNumberPurchaseResponse as PhoneNumberPurchaseResponse,
    type PhoneNumberRequirementsResponse as PhoneNumberRequirementsResponse,
    type PhoneNumberSearchAvailableResponse as PhoneNumberSearchAvailableResponse,
    type OwnedPhoneNumbersCursor as OwnedPhoneNumbersCursor,
    type PhoneNumberUpdateParams as PhoneNumberUpdateParams,
    type PhoneNumberListParams as PhoneNumberListParams,
    type PhoneNumberPurchaseParams as PhoneNumberPurchaseParams,
    type PhoneNumberRequirementsParams as PhoneNumberRequirementsParams,
    type PhoneNumberSearchAvailableParams as PhoneNumberSearchAvailableParams,
  };

  export {
    Addresses as Addresses,
    type Address as Address,
    type AddressStatus as AddressStatus,
    type AddressCreateResponse as AddressCreateResponse,
    type AddressRetrieveResponse as AddressRetrieveResponse,
    type AddressesCursor as AddressesCursor,
    type AddressCreateParams as AddressCreateParams,
    type AddressListParams as AddressListParams,
  };

  export {
    RegulatoryDocuments as RegulatoryDocuments,
    type RegulatoryDocument as RegulatoryDocument,
    type RegulatoryDocumentCreateResponse as RegulatoryDocumentCreateResponse,
    type RegulatoryDocumentRetrieveResponse as RegulatoryDocumentRetrieveResponse,
    type RegulatoryDocumentUploadURLResponse as RegulatoryDocumentUploadURLResponse,
    type RegulatoryDocumentsCursor as RegulatoryDocumentsCursor,
    type RegulatoryDocumentCreateParams as RegulatoryDocumentCreateParams,
    type RegulatoryDocumentListParams as RegulatoryDocumentListParams,
  };

  export {
    Invitations as Invitations,
    type Invitation as Invitation,
    type InvitationCreateResponse as InvitationCreateResponse,
    type InvitationRetrieveResponse as InvitationRetrieveResponse,
    type InvitationCancelResponse as InvitationCancelResponse,
    type InvitationsCursor as InvitationsCursor,
    type InvitationCreateParams as InvitationCreateParams,
    type InvitationListParams as InvitationListParams,
  };

  export {
    URLs as URLs,
    type VerifiedURL as VerifiedURL,
    type URLEscalateResponse as URLEscalateResponse,
    type URLRetrieveDetailsResponse as URLRetrieveDetailsResponse,
    type URLSubmitForVerificationResponse as URLSubmitForVerificationResponse,
    type VerifiedURLsCursor as VerifiedURLsCursor,
    type URLEscalateParams as URLEscalateParams,
    type URLListVerifiedParams as URLListVerifiedParams,
    type URLSubmitForVerificationParams as URLSubmitForVerificationParams,
  };

  export { Balance as Balance, type BalanceRetrieveResponse as BalanceRetrieveResponse };

  export {
    SubAccounts as SubAccounts,
    type SubAccount as SubAccount,
    type SubAccountCreateResponse as SubAccountCreateResponse,
    type SubAccountRetrieveResponse as SubAccountRetrieveResponse,
    type SubAccountUpdateResponse as SubAccountUpdateResponse,
    type SubAccountDeactivateResponse as SubAccountDeactivateResponse,
    type SubAccountGetBalanceResponse as SubAccountGetBalanceResponse,
    type SubAccountsCursor as SubAccountsCursor,
    type SubAccountCreateParams as SubAccountCreateParams,
    type SubAccountUpdateParams as SubAccountUpdateParams,
    type SubAccountListParams as SubAccountListParams,
  };

  export { Number10dlc as Number10dlc };

  export { Me as Me, type MeRetrieveResponse as MeRetrieveResponse };

  export {
    Functions as Functions,
    type FunctionCreateResponse as FunctionCreateResponse,
    type FunctionRetrieveResponse as FunctionRetrieveResponse,
    type FunctionUpdateResponse as FunctionUpdateResponse,
    type FunctionDeleteResponse as FunctionDeleteResponse,
    type FunctionDeployResponse as FunctionDeployResponse,
    type FunctionGetDeploymentResponse as FunctionGetDeploymentResponse,
    type FunctionListDeploymentsResponse as FunctionListDeploymentsResponse,
    type FunctionListEventTypesResponse as FunctionListEventTypesResponse,
    type FunctionRollbackDeploymentResponse as FunctionRollbackDeploymentResponse,
    type FunctionTailLogsResponse as FunctionTailLogsResponse,
    type FunctionCreateParams as FunctionCreateParams,
    type FunctionUpdateParams as FunctionUpdateParams,
    type FunctionDeployParams as FunctionDeployParams,
    type FunctionListDeploymentsParams as FunctionListDeploymentsParams,
    type FunctionRollbackDeploymentParams as FunctionRollbackDeploymentParams,
    type FunctionTailLogsParams as FunctionTailLogsParams,
  };

  export {
    Conversations as Conversations,
    type ConversationRetrieveResponse as ConversationRetrieveResponse,
    type ConversationListResponse as ConversationListResponse,
    type ConversationMarkAsReadResponse as ConversationMarkAsReadResponse,
    type ConversationListResponsesCursor as ConversationListResponsesCursor,
    type ConversationListParams as ConversationListParams,
    type ConversationListMessagesParams as ConversationListMessagesParams,
  };

  export {
    Calls as Calls,
    type CallCreateResponse as CallCreateResponse,
    type CallRetrieveResponse as CallRetrieveResponse,
    type CallListResponse as CallListResponse,
    type CallHangupResponse as CallHangupResponse,
    type CallListResponsesCursor as CallListResponsesCursor,
    type CallCreateParams as CallCreateParams,
    type CallListParams as CallListParams,
  };

  export {
    AgentTemplates as AgentTemplates,
    type AgentTemplateRetrieveResponse as AgentTemplateRetrieveResponse,
    type AgentTemplateListResponse as AgentTemplateListResponse,
  };

  export {
    EmailDomains as EmailDomains,
    type EmailDomainCreateResponse as EmailDomainCreateResponse,
    type EmailDomainRetrieveResponse as EmailDomainRetrieveResponse,
    type EmailDomainListResponse as EmailDomainListResponse,
    type EmailDomainVerifyResponse as EmailDomainVerifyResponse,
    type EmailDomainCreateParams as EmailDomainCreateParams,
  };

  export {
    Agents as Agents,
    type AgentCreateResponse as AgentCreateResponse,
    type AgentRetrieveResponse as AgentRetrieveResponse,
    type AgentUpdateResponse as AgentUpdateResponse,
    type AgentListVoicesResponse as AgentListVoicesResponse,
    type AgentTestResponse as AgentTestResponse,
    type AgentCreateParams as AgentCreateParams,
    type AgentUpdateParams as AgentUpdateParams,
    type AgentListParams as AgentListParams,
    type AgentListVoicesParams as AgentListVoicesParams,
    type AgentTestParams as AgentTestParams,
  };
}