Refactoring Bitcoin RPC client implementation

backend/src/api/bitcoin/bitcoin-api.ts

@@ -1,5 +1,3 @@
-import config from '../../config';
-import * as bitcoin from '@mempool/bitcoin';
 import * as bitcoinjs from 'bitcoinjs-lib';
 import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory';
 import { IBitcoinApi } from './bitcoin-api.interface';
@@ -10,16 +8,10 @@ import { TransactionExtended } from '../../mempool.interfaces';
 
 class BitcoinApi implements AbstractBitcoinApi {
   private rawMempoolCache: IBitcoinApi.RawMempool | null = null;
-  private bitcoindClient: any;
+  protected bitcoindClient: any;
 
-  constructor() {
-    this.bitcoindClient = new bitcoin.Client({
-      host: config.CORE_RPC.HOST,
-      port: config.CORE_RPC.PORT,
-      user: config.CORE_RPC.USERNAME,
-      pass: config.CORE_RPC.PASSWORD,
-      timeout: 60000,
-    });
+  constructor(bitcoinClient: any) {
+    this.bitcoindClient = bitcoinClient;
   }
 
   $getRawTransaction(txId: string, skipConversion = false, addPrevout = false): Promise<IEsploraApi.Transaction> {