# All files / api generate-auth-token-request.ts

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83.33% Branches 5/6
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     /**
     * @license
     * Copyright 2019 Google LLC
     *
     * Licensed under the Apache License, Version 2.0 (the "License");
     * you may not use this file except in compliance with the License.
     * You may obtain a copy of the License at
     *
     *   http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */

    import { GenerateAuthTokenResponse } from '../interfaces/api-response';
    import { AppConfig } from '../interfaces/app-config';
    import { FirebaseDependencies } from '../interfaces/firebase-dependencies';
    import {
      CompletedAuthToken,
      RegisteredInstallationEntry
    } from '../interfaces/installation-entry';
    import { PACKAGE_VERSION } from '../util/constants';
    import {
      extractAuthTokenInfoFromResponse,
      getErrorFromResponse,
      getHeadersWithAuth,
      getInstallationsEndpoint,
      retryIfServerError
    } from './common';

    export async function generateAuthTokenRequest(
      { appConfig, platformLoggerProvider }: FirebaseDependencies,
      installationEntry: RegisteredInstallationEntry
    ): Promise<CompletedAuthToken> {
      const endpoint = getGenerateAuthTokenEndpoint(appConfig, installationEntry);

      const headers = getHeadersWithAuth(appConfig, installationEntry);

      // If platform logger exists, add the platform info string to the header.
      const platformLogger = platformLoggerProvider.getImmediate({
        optional: true
      });
      Eif (platformLogger) {
        headers.append('x-firebase-client', platformLogger.getPlatformInfoString());
      }

      const body = {
        installation: {
          sdkVersion: PACKAGE_VERSION
        }
      };

      const request: RequestInit = {
        method: 'POST',
        headers,
        body: JSON.stringify(body)
      };

      const response = await retryIfServerError(() => fetch(endpoint, request));
      if (response.ok) {
        const responseValue: GenerateAuthTokenResponse = await response.json();
        const completedAuthToken: CompletedAuthToken = extractAuthTokenInfoFromResponse(
          responseValue
        );
        return completedAuthToken;
      } else {
        throw await getErrorFromResponse('Generate Auth Token', response);
      }
    }

    function getGenerateAuthTokenEndpoint(
      appConfig: AppConfig,
      { fid }: RegisteredInstallationEntry
    ): string {
      return `${getInstallationsEndpoint(appConfig)}/${fid}/authTokens:generate`;
    }