fix(core): update

ts/paypal.classes.account.ts

@@ -0,0 +1,62 @@
+import * as plugins from './paypal.plugins';
+import { PayPalTransaction } from './paypal.classes.transaction';
+
+export interface IPayPalOptions {
+  clientId: string;
+  clientSecret: string;
+}
+
+export class PayPalAccount {
+  public apiBaseUrl: string = 'https://api.paypal.com'
+  public options: IPayPalOptions;
+
+  private apiToken: string;
+  private apiTokenExpirationTime: number;
+
+  constructor(optionsArg: IPayPalOptions) {
+    this.options = optionsArg;
+  }
+
+  public async getTransactionsFromTo (fromTimeMillisArg: number, toTimeMillisArg: number) {
+    let returnTransactions: PayPalTransaction[] = [];
+    do {
+      const transactions = await PayPalTransaction.getTransactionFor30days(this, fromTimeMillisArg);
+      returnTransactions = returnTransactions.concat(transactions);
+      fromTimeMillisArg = fromTimeMillisArg + plugins.smarttime.getMilliSecondsFromUnits({days: 30});
+    } while (fromTimeMillisArg < toTimeMillisArg);
+    return returnTransactions;
+  }
+
+  public async request(methodArg: 'GET' | 'POST', routeArg: string, payloadArg: any) {
+    if (!this.apiToken || this.apiTokenExpirationTime < Date.now()) {
+      const authHeader = `Basic ${plugins.smartstring.base64.encode(
+        `${this.options.clientId}:${this.options.clientSecret}`
+      )}`;
+      const response = await plugins.smartrequest.request(
+        `${this.apiBaseUrl}/v1/oauth2/token?grant_type=client_credentials`,
+        {
+          method: 'POST',
+          headers: {
+            Accept: 'application/json',
+            'Accept-Language': 'en_US',
+            Authorization: authHeader,
+          },
+          keepAlive: false,
+        }
+      );
+      this.apiToken = response.body.access_token;
+      this.apiTokenExpirationTime = Date.now() + response.body.expires_in * 1000 - 600000;
+    }
+
+    // we have a token
+    const response = await plugins.smartrequest.request(`${this.apiBaseUrl}${routeArg}`, {
+      method: 'GET',
+      headers: {
+        Accept: 'application/json',
+        'Accept-Language': 'en_US',
+        Authorization: `Bearer ${this.apiToken}`,
+      },
+    });
+    return response.body;
+  }
+}