async function setupProjectCredentials()

in src/cli/commands/login/login.ts [51:106]

• 44 lines of code
• 9 McCabe index (conditional complexity)

async function setupProjectCredentials(options: SWACLIConfig, credentialChain: TokenCredential) {
  let { subscriptionId, tenantId, clientId, clientSecret } = options;

  // If the user has not specified a tenantId, we will prompt them to choose one
  if (!tenantId) {
    const tenants = await listTenants(credentialChain);
    if (tenants.length === 0) {
      throw new Error(
        `No Azure tenants found in your account.\n  Please read https://docs.microsoft.com/azure/cost-management-billing/manage/troubleshoot-sign-in-issue`,
      );
    } else if (tenants.length === 1) {
      logger.silly(`Found 1 tenant: ${tenants[0].tenantId}`);
      tenantId = tenants[0].tenantId;
    } else {
      const tenant = await chooseTenant(tenants, options.tenantId);
      tenantId = tenant?.tenantId;
      // login again with the new tenant
      // TODO: can we silently authenticate the user with the new tenant?
      credentialChain = await authenticateWithAzureIdentity({ tenantId, clientId, clientSecret }, options.useKeychain, true);

      if (await credentialChain.getToken(defaultScope)) {
        logger.log(chalk.green(`✔ Successfully logged into Azure tenant: ${tenantId}`));
      }
    }
  }

  logger.silly(`Selected tenant: ${tenantId}`);

  // If the user has not specified a subscriptionId, we will prompt them to choose one
  if (!subscriptionId) {
    const subscriptions = await listSubscriptions(credentialChain);
    if (subscriptions.length === 0) {
      throw new Error(
        `No valid subscription found for tenant ${tenantId}.\n  Please read https://docs.microsoft.com/azure/cost-management-billing/manage/no-subscriptions-found`,
      );
    } else if (subscriptions.length === 1) {
      logger.silly(`Found 1 subscription: ${subscriptions[0].subscriptionId}`);
      subscriptionId = subscriptions[0].subscriptionId;
    } else {
      const subscription = await chooseSubscription(subscriptions, subscriptionId);
      subscriptionId = subscription?.subscriptionId;
    }
  }

  logger.silly(`Selected subscription: ${subscriptionId}`);

  logger.silly(`Project credentials:`);
  logger.silly({ subscriptionId, tenantId, clientId, clientSecret });

  await storeProjectCredentialsInEnvFile(subscriptionId, tenantId, clientId, clientSecret);

  return {
    credentialChain,
    subscriptionId: subscriptionId as string,
  };
}