'use strict';

const fetch = require('fetch-everywhere');

const {
  errorHandler,
  responseHandler
} = require('./helpers/fetch');
/**
 * Create a subscription for a user.
 *
 * @param {string} accessToken - The user's access-token
 * @param {number} planId - The numerical plan id to setup for the user
 * @param {object} subscription - the subscription information
 * @param {boolean} subscription.autoRenewal
 * @param {string} [subscription.locale]
 * @param {number} [subscription.units]
 * @param {boolean} [subscription.trial]
 * @param {Array} [subscription.billingInfo]
 * @param {object} [subscription.billingInfo.billingAddress]
 * @param {string} [subscription.billingInfo.billingAddress.country]
 * @returns {Promise<object>}
 */


function createSubscriptionForUser(accessToken, planId = 25, subscription = {}) {
  if (typeof accessToken !== 'string') {
    throw new TypeError(`accessToken param must be a string, got ${typeof accessToken}`);
  }

  const url = `${process.env.SVC_BILLING_BASE_URL}/subscriptions/plans/${planId}/subscribe`;
  const headers = {
    'Content-Type': 'application/json',
    Authorization: `Bearer ${accessToken}`,
    Accept: 'application/json'
  };
  const subscriptionDefaults = {
    trial: true,
    autoRenewal: true,
    units: 1,
    locale: 'en-US',
    billingInfo: [{
      billingAddress: {
        country: 'CH'
      }
    }]
  };
  return fetch(url, {
    method: 'POST',
    headers,
    body: JSON.stringify({ ...subscriptionDefaults,
      ...subscription
    })
  }).then(responseHandler).catch(errorHandler);
}

module.exports = createSubscriptionForUser;
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