feat(log): write logs to file when polling for job status

src/auth/tokens.ts

@@ -0,0 +1,122 @@
+import {
+  AuthConfig,
+  isAccessTokenExpiring,
+  isRefreshTokenExpiring,
+  SasAuthResponse
+} from '@sasjs/utils'
+import * as NodeFormData from 'form-data'
+import { RequestClient } from '../request/RequestClient'
+
+/**
+ * Exchanges the auth code for an access token for the given client.
+ * @param requestClient - the pre-configured HTTP request client
+ * @param clientId - the client ID to authenticate with.
+ * @param clientSecret - the client secret to authenticate with.
+ * @param authCode - the auth code received from the server.
+ */
+export async function getAccessToken(
+  requestClient: RequestClient,
+  clientId: string,
+  clientSecret: string,
+  authCode: string
+): Promise<SasAuthResponse> {
+  const url = '/SASLogon/oauth/token'
+  let token
+  if (typeof Buffer === 'undefined') {
+    token = btoa(clientId + ':' + clientSecret)
+  } else {
+    token = Buffer.from(clientId + ':' + clientSecret).toString('base64')
+  }
+  const headers = {
+    Authorization: 'Basic ' + token
+  }
+
+  let formData
+  if (typeof FormData === 'undefined') {
+    formData = new NodeFormData()
+  } else {
+    formData = new FormData()
+  }
+  formData.append('grant_type', 'authorization_code')
+  formData.append('code', authCode)
+
+  const authResponse = await requestClient
+    .post(
+      url,
+      formData,
+      undefined,
+      'multipart/form-data; boundary=' + (formData as any)._boundary,
+      headers
+    )
+    .then((res) => res.result as SasAuthResponse)
+
+  return authResponse
+}
+
+/**
+ * Returns the auth configuration, refreshing the tokens if necessary.
+ * @param requestClient - the pre-configured HTTP request client
+ * @param authConfig - an object containing a client ID, secret, access token and refresh token
+ */
+export async function getTokens(
+  requestClient: RequestClient,
+  authConfig: AuthConfig
+): Promise<AuthConfig> {
+  const logger = process.logger || console
+  let { access_token, refresh_token, client, secret } = authConfig
+  if (
+    isAccessTokenExpiring(access_token) ||
+    isRefreshTokenExpiring(refresh_token)
+  ) {
+    logger.info('Refreshing access and refresh tokens.')
+    ;({ access_token, refresh_token } = await refreshTokens(
+      requestClient,
+      client,
+      secret,
+      refresh_token
+    ))
+  }
+  return { access_token, refresh_token, client, secret }
+}
+
+/**
+ * Exchanges the refresh token for an access token for the given client.
+ * @param requestClient - the pre-configured HTTP request client
+ * @param clientId - the client ID to authenticate with.
+ * @param clientSecret - the client secret to authenticate with.
+ * @param authCode - the refresh token received from the server.
+ */
+export async function refreshTokens(
+  requestClient: RequestClient,
+  clientId: string,
+  clientSecret: string,
+  refreshToken: string
+) {
+  const url = '/SASLogon/oauth/token'
+  let token
+  if (typeof Buffer === 'undefined') {
+    token = btoa(clientId + ':' + clientSecret)
+  } else {
+    token = Buffer.from(clientId + ':' + clientSecret).toString('base64')
+  }
+  const headers = {
+    Authorization: 'Basic ' + token
+  }
+
+  const formData =
+    typeof FormData === 'undefined' ? new NodeFormData() : new FormData()
+  formData.append('grant_type', 'refresh_token')
+  formData.append('refresh_token', refreshToken)
+
+  const authResponse = await requestClient
+    .post<SasAuthResponse>(
+      url,
+      formData,
+      undefined,
+      'multipart/form-data; boundary=' + (formData as any)._boundary,
+      headers
+    )
+    .then((res) => res.result)
+
+  return authResponse
+}